MIURA SHUN
Organization
Faculty of Information Science and Electrical Engineering Department of Electrical Engineering Assistant Professor
Research Institute of Superconductor Science and Systems （Concurrent）
School of Engineering Department of Electrical Engineering and Computer Science（Concurrent）
Graduate School of Information Science and Electrical Engineering Department of Electrical and Electronic Engineering（Concurrent）
Research Institute of Superconductor Science and Systems （Concurrent）
School of Engineering Department of Electrical Engineering and Computer Science（Concurrent）
Graduate School of Information Science and Electrical Engineering Department of Electrical and Electronic Engineering（Concurrent）
Title
Assistant Professor
Profile
銅酸化物高温超伝導線材の電磁特性の評価・解明、および機器応用の研究開発に取り組んでいる。これまでの研究で、ナノ構造制御技術を駆使したREBa2Cu3Oy超伝導線材の高性能化を行い、特に独自の成膜手法により世界最高の臨界電流・磁束ピンニング特性を達成した。現在、主に超伝導機器応用へ向けた導体・巻線の構成法の開発および、その交流損失を含む電磁特性の解明、さらに超伝導回転機を中心とした超伝導機器の開発を行っている。超伝導技術の高電流密度・強磁場の特長を活かし、軽量・コンパクトで高出力密度の超伝導回転機を開発し、電気推進飛行体への適用を目指している。
Homepage
-
http://www.sc.kyushu-u.ac.jp/
超伝導システム科学研究センター
-
https://e-air.kyushu-u.ac.jp/
先進電気推進飛行体研究センター
External link
Research Areas
Research Areas
-
Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Power engineering
Degree
Degree
-
Dr.
Research History
Research History
-
Kyushu University Faculty of Information Science and Electrical Engineering Department of Electrical Engineering Assistant Professor
2017.4 - Present
Education
Education
-
Nagoya University 工学研究科
- 2017.3
More details
Country：Japan
Research Interests・Research Keywords
Research Interests・Research Keywords
-
Research theme： Development of superconducting motors
Keyword： superconductivity, rotational machine, AC loss, refrigerator system
Research period： 2017.4
-
Research theme： Study of electromagnetic properties of superconducting wires
Keyword： superconductivity, AC loss, REBCO
Research period： 2017.4
-
Research theme： Study on flux pinning of rare-earth-based high temperature superconducting tapes with controlled nanostructures for strong magnetic field applications
Keyword： HTS, flux pinning, crystal growth, thin film, SmBa2Cu3Oy, nano-rod, artificial pinning center, self-organization
Research period： 2012.4 - 2017.3
Awards
Awards
-
2024.5 低温工学・超電導学会
三浦 峻
More details
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
-
電気学会 基礎・材料・共通部門 部門大会 優秀論文発表賞
2016.9 電気学会 高密度BaHfO3ナノロッドを導入したREBa2Cu3Oy超伝導薄膜の磁場中超伝導特性
-
名古屋大学学術奨励賞
2015.6 名古屋大学 ナノ構造制御による高温超伝導薄膜線材の超伝導特性向上及び磁束ピンニング機構解明に関する研究
-
低温工学・超電導学会 優良発表賞
2015.5 低温工学・超電導学会 LTG法により作製したBaHfO3添加SmBa2Cu3Oy薄膜の低温磁場中Jc特性
-
優秀賞、平成25年度エネルギー理工学専攻修士論文研究発表会
2014.3 名古屋大学 エネルギー理工学専攻 高密度BaHfO3ナノロッドを導入したLTG-SmBa2Cu3Oy超伝導薄膜の結晶成長及び磁束ピンニング特性に関する研究
-
ISETS'13 Outstanding Presentation Award
2013.12 ISETS Surface morphologies and microstructures of SmBa2Cu3Oy superconducting films including BaHfO3 nanorods grown at low substrate temperatures
-
優秀賞（プレポスター賞）、平成25年度エネルギー理工学専攻中間発表会
2013.9 名古屋大学 エネルギー理工学専攻 成膜基板温度によりナノ構造制御したBaHfO3添加SmBa2Cu3Oy薄膜の超伝導特性及び微細構造観察
Papers
Papers
-
Development and assessment of simplified analytical method for current distribution among REBa2Cu3Oy parallel conductors in armature windings for fully superconducting rotating machines Reviewed International journal
S. Miura, A. Kobun, Y. Masuda, H. Miyazaki, A. Kawagoe, H. Sasa, K. Yoshida, S. Sato, M. Iwakuma
Superconductor Science and Technology 36 065007 2023.5
More details
-
Strongly enhanced irreversibility field and flux pinning force density in SmBa2Cu3Oy-coated conductors with well-aligned BaHfO3 nanorods Reviewed International journal
Shun MIURA, Yutaka Yoshida, Yuji Tsuchiya, Yusuke Ichino, Satoshi Awaji, Ataru Ichinose, Kaname Matsumoto, Akira Ibi, Teruo Izumi, Masataka Iwakuma
Applied Physics Express 10 103101 2017.9
More details
Language：English Publishing type：Research paper (scientific journal)
-
Strong flux pinning at 4.2 K in SmBa2Cu3Oy coated conductors with BaHfO3 nanorods controlled by low growth temperature Reviewed International journal
Shun MIURA, Yuji Tsuchiya, Yutaka Yoshida, Yusuke Ichino, Satoshi Awaji, Kaname Matsumoto, Akira Ibi, Teruo Izumi
Supercond. Sci. Technol. 30 084009 - 1 - 084009 - 9 2017.7
More details
Language：English Publishing type：Research paper (scientific journal)
-
Improvement in Jc performance below liquid nitrogen temperature for SmBa2Cu3Oy superconducting films with BaHfO3 nano-rods controlled by low-temperature growth Reviewed International journal
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Qianyu Xu, Kaname Matsumoto, Ataru Ichinose, Satoshi Awaji
APL Materials 4 016102 2016.1
More details
Language：English Publishing type：Research paper (scientific journal)
-
Experimental Evaluation of Transposed Three-Parallel Conductors to Achieve Uniform Current in Armature Coils of Superconducting Motors Reviewed International journal
Goki Kawasaki , Kazuki Nakamura, Yudai Kimura, Tomohiro Inoue, Yohei Masuda, Shun Miura , Hiroshi Miyazaki , Akifumi Kawagoe , Masataka Iwakuma
IEEE Transactions on Applied Superconductivity 35 ( 5 ) 5201205 2025.8
More details
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)
-
Performance Testing of 400 kW-Rated REBCO Superconducting Synchronous Machine in Low-Temperature and Low-Pressure Environments Reviewed International journal
H. Miyazaki , M. Iwakuma , Y. Emori , R. Konishi, K. Yoshida, S. Sato, H. Sasa , S. Miura , I. Sagara,Y. Suzuki, M. Konno, H. Hirai, A. Kawagoe , and T. Izumi
IEEE Transactions on Applied Superconductivity 35 ( 5 ) 5201305 2025.8
More details
-
Current Sharing in Parallel Conductors Using Bi-2223 Tapes in Perpendicular Magnetic Fields Reviewed International journal
A. Kawagoe , Member, IEEE, M. Yoshida, S. Ando, S. Miura , H. Miyazaki , and M. Iwakuma
IEEE Transactions on Applied Superconductivity 35 ( 5 ) 6400205 2025.8
More details
-
Current Sharing in Parallel Conductors Using Bi-2223 Tapes in Perpendicular Magnetic Fields Reviewed International journal
T. Kuniyasu , M. Asada, T. Kawasaki, T. Eguchi, K. Yoshida , H. Miyazaki , S. Miura , H. Sasa , M. Iwakuma
IEEE Transactions on Applied Superconductivity 35 ( 5 ) 5000206 2025.8
More details
-
AC Loss Property of Horizontal Array of Isolated REBCO Superconducting Tapes and Pancake Coils Reviewed International journal
Hiromasa Sasa , Ryoma Oishi , Yuji Nishida, Yuuki Himeno, Takaemi Suenaga, Shun Miura , Hiroshi Miyazaki , and Masataka Iwakuma
IEEE Transactions on Applied Superconductivity 35 ( 5 ) 5900706 2025.8
More details
-
Measurement System for Induced Currents in Superconducting Air-Core Rotors for Induction Motors Reviewed International journal
Akifumi Kawagoe, Ryunosuke Torii, Shinpei Nakagawa, Shun Miura, Hiroshi Miyazaki, Masataka Iwakuma
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 34 ( 5 ) 5203205 2024.8
More details
Language：English Publishing type：Research paper (scientific journal)
-
Current Sharing Among Three-Strand Parallel Conductors Composed of REBCO Tapes in Three-Phase Armature Coil Conditions Reviewed International journal
Shun Miura, Kazuki Nakamura, Yohei Masuda, Goki Kawasaki, Hiroshi Miyazaki, Akifumi Kawagoe, Hiromasa Sasa, Koichi Yoshida, Seiki Sato, Masataka Iwakuma
IEEE Transactions on Applied Superconductivity 34 5200905 2024.8
More details
Language：English Publishing type：Research paper (scientific journal)
-
Electromagnetic Design of a REBCO Four-Pole Full-Pitched Armature Coil Composed of Trapezoidal Windings for Fully Superconducting Synchronous Motors Reviewed International journal
Yuki Emori, Hiroshi Miyazaki, Shun Miura, Hiromasa Sasa, Masataka Iwakuma
IEEE Transactions on Applied Superconductivity 34 5201305 2024.8
More details
Language：English Publishing type：Research paper (scientific journal)
-
Evaluation of the AC Loss Characteristics of Multifilamentary REBCO Tapes by the Mechanical Scratching of MgO Areas Reviewed International journal
Ryoma Oishi, Kodai Jingami, Hiroshi Miyazaki, Masataka Iwakuma, Shun Miura, Hiromasa Sasa, Koichi Yoshida, Masanori Daibo, Shinji Fujita
IEEE Transactions on Applied Superconductivity 34 5901906 2024.8
More details
Language：English Publishing type：Research paper (scientific journal)
-
Current Distributions in Armature Coils Comprising Two Sizes of Racetrack Double-Pancakes with REBCO Striated Tapes Reviewed International journal
Atsushi Takashima, Hiroshi Miyazaki, Shun Miura, Koichi Yoshida, Seiki Sato, Hiromasa Sasa, Masataka Iwakuma
IEEE Transactions on Applied Superconductivity 34 5201605 2024.8
More details
Language：English Publishing type：Research paper (scientific journal)
-
Effectiveness of REBCO Trapezoidal Armature Coils Used in Superconducting Induction Motors Reviewed International journal
Masahiko Tsumori, Ryoto Yamasaki, Yuta Okade, Hiroshi Miyazaki, Shun Miura, Hiromasa Sasa, Koichi Yoshida, Masataka Iwakuma
IEEE Transactions on Applied Superconductivity 34 5200206 2024.8
More details
Language：English Publishing type：Research paper (scientific journal)
-
Fabrication and Test of a 400 kW-class Fully Superconducting Synchronous Motor Using REBCO Tape for an Electric Propulsion System Reviewed International journal
Hiroshi Miyazaki, Masataka Iwakuma, Yuki Emori, Hiromasa Sasa, Koichi Yoshida, Seiki Sato, Shun Miura, Isamu Sagara, Yoshiaki Suzuki, Masayuki Konno, Hirokazu Hirai, Teruo Izumi
IEEE Transactions on Applied Superconductivity 34 5200506 2024.8
More details
Language：English Publishing type：Research paper (scientific journal)
-
Current Distribution Among Transposed Eight- and 16-Parallel REBa2Cu3Oy Wires in Single-Phase Armature Coils Reviewed International journal
Shun Miura, Asato Kobun, Yohei Masuda, Goki Kawasaki, Hiroshi Miyazaki, Akifumi Kawagoe, Hiromasa Sasa, Koichi Yoshida, Seiki Sato, Masataka Iwakuma
IEEE Transactions on Applied Superconductivity 34 ( 3 ) 5201906 2024.5
More details
-
Sasa H., Jingami K., Oishi R., Miura S., Miyazaki H., Iwakuma M.
Journal of Physics: Conference Series 2776 ( 1 ) 2024 （ ISSN:17426588 ）
More details
Publisher：Journal of Physics: Conference Series
The estimation of AC loss in REBa2Cu3Oy (REBCO; RE = rare earth, such as Y, Eu, and Gd) superconducting tapes within superconducting synchronous motors and generators for electric aircraft is imperative during the design stage phase to optimize efficiency and cooling considerations. Our previous studies clarified the AC loss characteristics, focusing on estimating the AC loss in armature windings. While the magnetic field applied to the armature windings is exclusively as an AC field, the field windings are subject to a composite field comprising both AC and DC components. Notably, the amplitude of the AC component is markedly smaller than the magnitude of DC component. This study experimentally investigated to consider the AC loss properties in field windings. The experimental results were as follows: When subjected to operational conditions of field windings within synchronous motor and generator, the AC loss increased with the DC field strength. This property is attributed to a reduction in the critical current induced by the external field. Hence, we modified the method for estimating AC loss. Subsequently, we validated the effectiveness of the modified method.
-
Kawasaki G., Miura S., Miyazaki H., Iwakuma M.
Journal of Physics: Conference Series 2776 ( 1 ) 2024 （ ISSN:17426588 ）
More details
Publisher：Journal of Physics: Conference Series
The armature coil of the superconducting synchronous motor for electric aircraft requires a current of 1,000 A or more. However, a single superconducting tape at liquid nitrogen temperatures is insufficient for this operating current. Therefore, the armature coil should be composed of multi-strand parallel conductors. If the coil is constructed from parallel conductors, the inductance balance between the parallel conductors will be collapsed, so the current distributions will be non-uniform. As a solution for this issue, the uniform current distribution can be achieved by the transposition technique that changes the order in which tapes are stacked. Our previous research has developed the transposition method for the 2n-strand parallel conductors (n = 1, 2, 3, and so on). However, some of the superconducting synchronous motors are actually designed using a number of parallel conductors other than 2n. This study focused on the three- and the six-strand parallel conductors. We analytically clarified the unique transposition configuration for the three-strand parallel conductors that achieves uniform current distribution, and the transposition configuration for the six-strand parallel conductors by combining the transposition configuration for the three- and two-strand parallel conductors. As a result, the current distribution ratio became less than ±5% when the number of turns of the double pancake coil was a multiple of six by applying the transposition.
-
Uriu K., Iwakuma M., Miyazaki H., Miura S., Sasa H.
Journal of Physics: Conference Series 2776 ( 1 ) 2024 （ ISSN:17426588 ）
More details
Publisher：Journal of Physics: Conference Series
The global demand for aircraft is currently increasing, paralleled by a growing emphasis on decarbonization through the replacement of fossil fuel engines with electric propulsion. In response to this trend, we have developed a superconducting motor distinguished by its high efficiency, output, and low weight. Our focus centers on two critical aspects. Firstly, we addressed the issue of the field coil's shape. The widely used REBCO wire in high-temperature superconductivity is tape-shaped, making a racetrack coil the most straightforward method for winding the wire. However, this configuration necessitates dividing the motor shaft as it comes in contact with the field coil, raising concerns about the mechanical durability of motors. To overcome this challenge, we introduce a saddle-type coil and design a coil shape that achieves a single continuous through-axis. Utilizing the Frenet-Serre formula, we created a 3D model of the coil's end without applying load to the wire. This method, previously employed in accelerators, enhances durability, potentially leading to increased output due to higher rotation speeds and reduces weight through part savings. Secondly, introducing a saddle coil presents challenges in forming an ideal magnetic field distribution. In a rotating-field-type motor using an iron core, the winding can be directly wound around it, resulting in multiple coils forming similar magnetic fields that can be superimposed to create one large magnetic pole. However, with a saddle coil, coils are arranged along the circumference, and the magnetic field distribution and an anticipated decrease in output. To address this, we aimed to optimize the magnetic field distribution and increase output through a parameter survey. Specifically, we conducted an analysis under fixed armature conditions (current, number of turns, and shape) in three cases. In Case1, with a fixed total number of turns for the field coil, we compared magnetic field distributions and output by varying the number and arrangement of coils. In Case2, building on the findings of Case1, we aimed to enhance output by fixing the coil arrangement and increasing the number of turns. Finally, in Case 3, we examined the change in motor size with fixed coil parameters while altering the coil arrangement and pitch.
-
Basic Concept for Uniform Current Distribution in Parallel Conductors by Introducing a Small Number of Transpositions in REBCO Armature Coils Invited Reviewed International journal
Asato Kobun, Yohei Masuda, Shun Miura, Hiroshi Miyazaki, Koichi Yoshida, Seiki Sato, Hiromasa Sasa, Masataka Iwakuma
IEEE Transactions on Applied Superconductivity 33 ( 5 ) 5200406 2023.8
More details
-
Current Distribution of Armature Coils Combining Two Different Sizes of REBCO Racetrack Double Pancakes Reviewed International journal
Atsushi Takashima, Yuki Onamyuda, Asato Kobun, Hiroshi Miyazaki, Akifumi Kawagoe, Shun Miura, Koichi Yoshida, Seiki Sato, Hiromasa Sasa, Masataka Iwakuma
IEEE Transactions on Applied Superconductivity 33 ( 5 ) 4600905 2023.8
More details
-
Current Sharing Among Transposed Three-Parallel REBa2Cu3Oy Tapes in Single-Phase Armature Coils Reviewed International journal
Shun Miura, Asato Kobun, Yohei Masuda, Kazuki Nakamura, Hiroshi Miyazaki, Akifumi Kawagoe, Hiromasa Sasa, Koichi Yoshida, Seiki Sato, Masataka Iwakuma
IEEE Transactions on Applied Superconductivity 33 ( 5 ) 5200306 2023.8
More details
-
Numerical simulation of a high-power density 10 MW REBCO superconducting synchronous generator cooled by sub-cooled LN2 for low AC loss Reviewed International journal
Kaito Noda, Hiromasa Sasa, Hiroshi Miyazaki, Shun Miura, Takashi Yoshida, Teruyoshi Sasayama, Masataka Iwakuma, Akifumi Kawagoe, Teruo Izumi, Masayuki Konno, Yuichiro Sasamori, Hirokazu Honda, Yoshiji Hase and Masao Shutoh
Journal of Physics: Conference Series 2323 012037 2022.9
More details
Language：English Publishing type：Research paper (international conference proceedings)
-
REBCO Trapezoidal Armature Windings for Superconducting Induction Motor Reviewed International journal
Yuta Okade, Hiroshi Miyazaki, Hiromasa Sasa, Koichi Yoshida, Shun Miura, Teruyoshi Sasayama, Takashi Yoshida, Akifumi Kawagoe, and Masataka Iwakuma
IEEE Transactions on Applied Superconductivity 32 ( 6 ) 5201706 2022.9
More details
-
Thermal-Electromagnetic Coupled Analysis Considering AC Losses in REBCO Windings at 65 K of 10 MW Fully-Superconducting Synchronous Generators for Electric Aircraft Reviewed International journal
Hiromasa Sasa, Shun Miura, Hiroshi Miyazaki, Teruyoshi Sasayama, Takashi Yoshida, Kaoru Yamamoto, Masataka Iwakuma, Yoshiji Hase, Yuichiro Sasamori, Hirokazu Honda, Masayuki Konno, and Teruo Izumi
IEEE Transactions on Applied Superconductivity 32 ( 6 ) 5201806 2022.9
More details
-
Experimental Evaluation of Current Distribution in Three-Strand Transposed Parallel Conductors Composed of REBCO Superconducting Tapes Reviewed International journal
Yuki Omanyuda , Hiromasa Sasa , Hiroshi Miyazaki , Shun Miura , and Masataka Iwakuma
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 32 ( 6 ) 6601105 2022.9
More details
Language：English Publishing type：Research paper (scientific journal)
-
Additional AC Loss Properties of Three-Strand Transposed Parallel Conductors Composed of REBa2Cu3Oy Tapes Invited International journal
Omanyuda, Yuki; Miura, Shun; Iwakuma, Masataka
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 31 ( 5 ) 2021.8
More details
-
Experimental Evaluation of 1 kW-class Prototype REBCO Fully Superconducting Synchronous Motor Cooled by Subcooled Liquid Nitrogen for E-Aircraft Reviewed International journal
Sasa, Hiromasa; Iwakuma, Masataka; Yoshida, Koichi; Sato, Seiki; Sasayama, Teruyoshi; Yoshida, Takashi; Yamamoto, Kaoru; Miura, Shun; Kawagoe, Akifumi; Izumi, Teruo; Tomioka, Akira; Konno, Masayuki; Sasamori, Yuichiro; Honda, Hirokazu; Hase, Yoshiji; Syutoh, Masao; Lee, Sergey; Hasuo, Shinya; Nakamura, Miyuki; Hasegawa, Takayo; Aoki, Yuhji; Umeno, Takahiro
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 31 ( 5 ) 2021.8
More details
-
Estimation Method for AC Loss of Perpendicularly Stacked REBa(2)Cu(3)Oy Superconducting Tapes under Magnetic Field Reviewed International journal
Sasa, Hiromasa; Miura, Shun; Iwakuma, Masataka; Izumi, Teruo; Machi, Takato; Ibi, Akira
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 580 2021.1
More details
Language：English Publishing type：Research paper (scientific journal)
-
Ryota Sugouchi, Hirokazu Honda, Yoshiji Hase, Masao Shuto, Masayuki Konno, Teruo Izumi, Masataka Komiya, Shun Miura, Masataka Iwakuma, Koichi Yoshida, Teruyoshi Sasayama, Takashi Yoshida, Kaoru Yamamoto, Yuichiro Sasamori
IEEE Transactions on Applied Superconductivity 30 ( 4 ) 2020.6
More details
Language：English Publishing type：Research paper (scientific journal)
With air traffic predicted to increase in the future, CO2 emission must be decreased to prevent global warming. Our research group previously proposed electric propulsion systems based on superconducting technology, which is promising for reducing emissions. In this study, propulsive 2 MW fully superconducting motors were conceptually designed. At operating temperatures of 20 and 64 K, we observed the influence of the superconducting magnetic shield on the electromagnetic properties, especially the output power density, AC loss, and efficiency. The superconducting magnetic shield can reduce leakage magnetic field to the outside of the motor by inducing a current, and the shield is reproduced with a conductor of extremely high conductivity for simplicity in electromagnetic analysis. As a result, at an operating temperature of 20 K, the superconducting motors with the superconducting magnetic shields showed a high power density greater than 40 kW/kg and high efficiency of 99.7%. Even at an operating temperature of 64 K, the motors with the superconducting shield showed a power density and efficiency of 20 kW/kg and 99.4%, respectively.
-
Koichiro Ozaki, Yuma Doi, Koichi Yoshida, Shun Miura, Teruyoshi Sasayama, Takashi Yoshida, Kaoru Yamamoto, Masataka Iwakuma, Akifumi Kawagoe, Akira Tomioka, Masayuki Konno, Teruo Izumi
IEEE Transactions on Applied Superconductivity 30 ( 4 ) 2020.6
More details
Language：English Publishing type：Research paper (scientific journal)
High power density motors are required for electric propulsion aircrafts. The highest power density of the conventional motor is reported as 5.2 kW/kg up to now. Superconducting rotating machines have a potential to realize higher power density due to its high current density and a large magnetic field property. In this study, the induction motor with air-cored superconducting armature windings was conceptually designed. The output power range was 3 to 6 MW and the output power density aimed to be over 20 kW/kg. The armature voltage should be below kV-class and joule loss below 122 kW. The target efficiency was over 95%. The electromagnetic design and analysis were carried out by JMAG Designer. The number of magnetic poles and operating temperatures were set as two poles and liquid hydrogen temperature of 20 K, respectively. The parameter was power frequency in the range of 100-250 Hz. As a result, all the requirements were satisfied when the power frequency was 130 Hz. The feasibility of the MW-class superconducting induction motor was investigated, and in conclusion, the superconducting induction motor can be applied to the aircraft propulsion system.
-
Shun Miura, Masataka Iwakuma, Teruo Izumi
IEEE Transactions on Applied Superconductivity 30 ( 4 ) 2020.6
More details
Language：English Publishing type：Research paper (scientific journal)
15 MW-class Direct-drive fully-superconducting generators for offshore floating wind turbine generators were conceptually designed. High-performance EuBa2Cu3Oy (EuBCO) superconducting wires with a large in-field critical current were employed, which can reduce the wire length of the generators. The design study showed good electromagnetic properties: high efficiency of 96.5%, and a low synchronous reactance of 0.4 p.u. The total weight of the superconducting generators including support structures was assumed as ∼98 tons, which is much lighter than partially-superconducting generators and conventional generators. Furthermore, our superconducting generator satisfied the cost requirement due to employing high-performance EuBCO wires and reducing field winding length by a unique casing structure. In conclusion, the fully-superconducting generators have a great advantage, especially for a tens-MW wind turbine system.
-
Conceptual Design and Numerical Analysis of 10 MW Fully Superconducting Synchronous Generators Installed with a Novel Casing Structure Reviewed International journal
Masataka Komiya, Ryota Sugouchi, Hiromasa Sasa, Shun Miura, Masataka Iwakuma, Takashi Yoshida, Teruyoshi Sasayama, Kaoru Yamamoto, Akira Tomioka, Masayuki Konno, Teruo Izumi
IEEE Transactions on Applied Superconductivity 30 ( 4 ) 5206607 2020.6
More details
Language：English Publishing type：Research paper (scientific journal)
-
Shun Miura, Soichiro Oki, Takuma Furukawa, Masataka Iwakuma
IEEE Transactions on Applied Superconductivity 29 ( 5 ) 2019.8
More details
Language：English Publishing type：Research paper (scientific journal)
By a pick-up-coil method, the additional ac loss due to the formation of two-strand parallel conductors consisting of REBa
2
Cu
3
O
y
(REBCO, RE = rare earth) superconducting tapes was experimentally investigated. We recently improved the theoretical expression of the additional ac loss assuming that the voltage-current characteristics are expressed by the n-value model. The objective of this study is to prove the validity of the improved theoretical expression by experiment. The two insulated REBCO strands were cowound into a one-layer solenoidal coil. A uniform external magnetic field was applied in the axial direction of the sample coil. The additional ac losses were measured by the pick-up-coil method in sinusoidal ac magnetic fields whose maximum amplitude and frequency are 0.1 T and 10 Hz, respectively. The observed additional ac losses corresponded with the theoretical prediction. Therefore, it was concluded that the improved theoretical expression is more accurate than the previous one. At high-frequency regions, the observed additional ac losses slightly deviated from the theoretical predictions. -
Shintaro Sagawa, Shun Miura, Masataka Iwakuma, Yusuke Fukumoto, Koichi Yoshida, Seiki Sato, Teruo Izumi
IEEE Transactions on Applied Superconductivity 29 ( 5 ) 2019.8
More details
Language：English Publishing type：Research paper (scientific journal)
For nuclear magnetic resonance superconducting magnets wound with REBa
2
Cu
3
O
y
(REBCO, where RE = rare earth elements such as Y, Gd, Eu, and so on) superconducting tapes, the current capacity of the tapes needs to be enhanced from the viewpoint of magnet protection. Thus, the introduction of the configuration of parallel conductors was proposed. The constituent tapes should be insulated and transposed for low ac loss and uniform current sharing among the tapes. However, when the tapes have different values of critical current, I
c
, and their n-values, the tapes will not have uniform transport currents. In this paper, the current-sharing properties of three-strand parallel conductors composed of REBCO tapes, which were wound into coils, were theoretically investigated by accounting for the spatial distribution of the magnetic field, i.e., magnetic field and field angular dependences of I
c
. Here, it was assumed that the I-V characteristics are expressed by the n-value model. Equivalent circuit equations were derived and numerically solved. As a result, it was revealed that at a frequency higher than 0.01 Hz, the current flow is almost uniform even if there is a variation of 10% in I
c
and the n-value among the tapes. On the other hand, in the case of dc, the current sharing depends on the dispersion of I
c
and the n-value. In this paper, a simple solution for the control of the contact resistance at the terminals among the strands was proposed. -
Yuji Tsuchiya, Junya Akita, Yusuke Ichino, Shun Miura, Yutaka Yoshida
IEEE Transactions on Applied Superconductivity 29 ( 5 ) 2019.8
More details
Language：English Publishing type：Research paper (scientific journal)
Higherature superconducting REBCO tapes are attractive for their high critical current density. J
c
in the REBCO film is suppressed under magnetic fields and by grain boundaries. Our group has reported that artificial pinning centers (APC) enhance the J
c
at the grain boundaries in the REBCO films at the liquid nitrogen temperature of 77 K. In this study, we have extended our previous work to a lower temperature since the usage of the REBCO tapes at a lower temperature and a high magnetic field is a recent development trend. Transport characteristics at grain boundaries in the REBCO films with and without APC are investigated at temperatures down to 4.2 K and at magnetic fields up to 9 T. The results show that the introduction of the APCs is effective to enhance the J
c
at the grain boundaries at low temperatures and at the magnetic fields, especially around the matching field where the density of the APC is equal to that of vortices. -
Design study of 10 mw rebco fully superconducting synchronous generator for electric aircraft Reviewed
Masataka Komiya, Takuya Aikawa, Hiromasa Sasa, Shun Miura, Masataka Iwakuma, Takashi Yoshida, Teruyoshi Sasayama, Akira Tomioka, Masayuki Konno, Teruo Izumi
IEEE Transactions on Applied Superconductivity 29 ( 5 ) 2019.8
More details
Language：English Publishing type：Research paper (scientific journal)
Future aircraft are expected to have low noise pollution, low emission, and low fuel consumption. A fully turbo-electric propulsion system was proposed by NASA with these aims. The advantages of fully superconducting rotating machines are their weight and efficiency, owing to a high current density resulting in no iron core and no joule heat. In this paper, 10-MW fully superconducting generators with REBa2Cu3Oy (RE: Rare Earth, Y, Gd, Eu, and others, REBCO) superconducting tapes were studied in relation to their output power density and efficiency. The target output power density is over 20 kW/kg. Fully superconducting generators of 10 MW were designed, then a numerical simulation of the rated operation was conducted. The ac loss of the superconducting windings, iron loss of the yoke, total efficiency, dry weight, and output power density were evaluated, and their dependence on the operating temperature and the synchronous rotating speed were investigated. Here laser-scribing of the wires into a multifilamentary structure and transposed parallel conductors were introduced for ac loss reduction and current capacity enhancement. Consequently, the efficiency reached 99.2% in the case where the REBCO superconducting tapes were scribed into a 10-filament structure. The best model achieved a power density of 26.7 kW/kg. The iron yoke accounts for approximately half the total weight of all the models. The result suggests that the development of superconducting shields brings significant improvement to the output power density.
-
Numerical analysis of current-limiting cooperation of a 20 mva superconducting transformer and cable Reviewed
Fumiya Nakamura, Masataka Iwakuma, Shun Miura, Kohichi Yoshida, Akira Tomioka, Msayuki Konno
IEEE Transactions on Applied Superconductivity 29 ( 5 ) 2019.8
More details
Language：English Publishing type：Research paper (scientific journal)
In a previous study, we developed a 66/6.9 kV-2 MVA REBa2Cu3Oy (REBCO) superconducting transformer with a current-limiting function that was cooled with subcooled liquid nitrogen at 65 K. By considering the flux-flow state, it is possible to quantitatively explain the behavior of REBCO superconducting transformers and cables subjected to a sudden short circuit. Our goal was to demonstrate that limiting an excess fault current to triple the rated current after 0.2 s (while maintaining a superconducting state) was possible with the cooperation of superconducting transformers and cables. For that purpose, a numerical analysis was performed by coupling thermal equations and circuit equations. Consequently, the numerical analysis demonstrated that limiting the excess fault current to triple the rated current after 0.2 s can be achieved by adjusting the thickness of the stabilizing copper layer of REBCO superconducting tapes and the length and critical current, Ic, of the superconducting cable. Through these simulations, the balance of Ic and thickness of copper layers was shown to be important in limiting overcurrent and normal transition rates of the superconducting winding of the transformer and cable.
-
Dependences of AC Loss in Stacked REBa2Cu3Oy Superconducting Tapes on the Interval among Tapes under Perpendicular Magnetic Field Invited Reviewed International journal
H Sasa, G Kawasaki, M Iwakuma, S Miura, T Izumi, T Machi, A Ibi
Journal of Physics: Conf. Series 1293 012037 2019.6
More details
Language：English Publishing type：Research paper (international conference proceedings)
-
Numerical analysis on the influence of armature winding configuration on AC loss of 10 MW fully superconducting generators of electric aircrafts Reviewed International journal
M Komiya, T Aikawa, K Yoshida, S Miura, M Iwakuma, T Yoshida, T Sasayama, A Tomioka, M Konno, T Izumi
Journal of Physics: Conf. Series 1293 012074 2019.6
More details
Language：English Publishing type：Research paper (international conference proceedings)
-
H. Sasa, T. Ito, Masataka Iwakuma, Shun Miura, T. Izumi, T. MacHi, A. Ibi
30th International Symposium on Superconductivity, ISS 2017 Journal of Physics: Conference Series 1054 ( 1 ) 2018.7
More details
Language：English Publishing type：Research paper (scientific journal)
For AC applications of high-temperature superconductors, such as REBa2Cu3O y (REBCO, RE = rare earth) superconducting tapes, an AC loss is a great part of total heat load of cooling systems. In the case of conduction cooling, it may cause a serious temperature rise of the superconducting systems. Therefore, it is very important to reduce the AC loss in superconducting windings and grasp its properties under various conditions. For AC loss reduction, REBCO tapes should be scribed into a multifilamentary structure by the laser-scribing technique. In this study, AC loss properties in the non-scribed and scribed tapes were investigated, especially for B m < B p, where B p is the breaking point of the AC loss curve and corresponds to the penetration field where the magnetic flux penetrates to the center of the tape or filaments. Further, the dependences of B p on the number of stacking tapes and filaments were investigated from the viewpoint of demagnetization effect. It was cleared that the AC loss for B m < B p decrease and B p increase with increasing number of stacked tapes.
-
Design Study of 2 MW Fully Superconducting Synchronous Motors Reviewed International journal
S. Fukuda, K. Yun, M. Iwakuma, S. Miura, S. Sato, K. Yoshida, A. Tomioka, M. Konno, T. Izumi
IEEE Transactions on Applied Superconductivity 28 ( 4 ) 5207806 2018.6
More details
Language：English Publishing type：Research paper (scientific journal)
-
Improved Flux Pinning for High Field Applications in BaHfO3-doped SmBa2Cu3Oy Coated Conductors with High Density of Random Pinning Centers Induced by BaHfO3 Nanorods Reviewed International journal
S. Miura, Y. Tsuchiya, Y. Yoshida, Y. Ichino, S. Awaji, A. Ichinose, K. Matsumoto, A. Ibi, T. Izumi, M. Iwakuma
IEEE Transactions on Applied Superconductivity 28 ( 4 ) 8000606 2018.6
More details
Language：English Publishing type：Research paper (scientific journal)
-
Surface diffusion constants and supersaturations in SmBCO films prepared by pulsed laser deposition method Reviewed International journal
Y. Ichino, N. Shimazaki, S. Miura, Y. Tsuchiya, Y. Yoshida
IEEE Transactions on Applied Superconductivity 28 ( 4 ) 7500304 2018.6
More details
Language：English Publishing type：Research paper (scientific journal)
-
Difference of AC Losses between non-striated and striated Tape and Applicability of Temperature Scaling Law to stacked striated Tape Reviewed International journal
T. Ito, M. Iwakuma, S. Miura, T. Izumi, K. Adachi, T. Machi, A. Ibi
IEEE Transactions on Applied Superconductivity 28 ( 3 ) 8200505 2018.4
More details
Language：English Publishing type：Research paper (scientific journal)
-
Theoretical Analysis of Additional AC Loss Properties of Two-Strand Transposed Parallel Conductors Composed of REBCO Superconducting Tapes Reviewed International journal
S. Oki, S. Miura, M. Iwakuma
IEEE Transactions on Applied Superconductivity 28 ( 3 ) 8201005 2018.4
More details
Language：English Publishing type：Research paper (scientific journal)
-
Satoshi Awaji, Yuji Tsuchiya, Shun Miura, Yusuke Ichino, Yutaka Yoshida, Kaname Matsumoto
Superconductor Science and Technology 30 ( 11 ) 2017.10
More details
Language：English Publishing type：Research paper (scientific journal)
Nanorods, which are nano-scaled columnar-shape precipitates, have recently been used to improve critical current density J c in magnetic fields for REBa2Cu3Oy (RE123, RE: rare earth element) high temperature superconducting tapes/films. However, the flux pinning mechanism of the nanorod is not clear yet. We investigated the J c and resistivity ρ properties in detail and discussed the flux pinning properties on the basis of the flux pinning state diagram for high-quality Sm123 films with well-aligned 5.6 vol% BaHfO3 nanorods. Plateaus were observed in the field dependence of J c and ρ at high temperatures above the delocalization temperature. This suggests that nanorod pinning becomes effective in the vortex liquid phase and it grows up when the temperature decreases toward the delocalization temperature. In the 'many-nanorod' state in the high temperature region above the delocalization temperature, double peaks in the F p curves appear due to the coexistence of nanorod pinning and random pinning. At low temperatures below 70 K, however, the well-scaled F p curves at low fields and temperature dependent (non-scaled) normalized F p curves are observed. From detailed analysis using the cooperation model of the random and the correlated pinning centers, we found that nanorod pinning is dominant below the matching field and the cooperation between nanorod pinning and random pinning determines the high field J c properties above the matching field.
-
Flux pinning landscape up to 25T in SmBa2Cu3Oy films with BaHfO3 nanorods fabricated by low-temperature growth technique Reviewed International journal
Yuji Tsuchiya, Shun MIURA, Satoshi Awaji, Yusuke Ichino, Kaname Matsumoto, Teruo Izumi, Kazuo Watanabe, Yutaka Yoshida
Supercond. Sci. Technol. 30 104004 2017.9
More details
Language：English Publishing type：Research paper (scientific journal)
-
Approaches in controllable generation of artificial pinning center in REBa2Cu3Oy-coated conductor for high-flux pinning Invited Reviewed International journal
Yutaka Yoshida, Shun MIURA, Yuji Tsuchiya, Yusuke Ichino, Satoshi Awaji, Kaname Matsumoto, Ataru Ichinose
Supercond. Sci. Technol. 30 104002 2017.8
More details
Language：English Publishing type：Research paper (scientific journal)
-
Vortex Pinning Properties at Grain Boundary in SmBa2Cu3Oy Superconducting Films with BaHfO3 Nano-rods Controlled via Low-Temperature Growth Reviewed International journal
Shun MIURA, Yusuke Ichino, Yutaka Yoshida, Ataru Ichinose, Akihiro Tsuruta
IEEE Transactions on Applied Superconductivity 27 8001505 2017.6
More details
Language：English Publishing type：Research paper (scientific journal)
-
Three-dimensional Monte Carlo simulation of nano-rods self-organization in REBa2Cu3Oy thin films grown by vapor phase epitaxy Reviewed International journal
Yusuke Ichino, Yutaka Yoshida, Shun MIURA
Japanese Journal of Applied Physic 56 015601 2017.1
More details
Language：English Publishing type：Research paper (scientific journal)
-
Delocalization of vortex in SmBa2Cu3O7-δ superconducting films with BaHfO3 nano-rods Reviewed International journal
Yuji Tsuchiya, Satoshi Awaji, Kazuo Watanabe, Shun MIURA, Yusuke Ichino, Yutaka Yoshida, Kaname Matsumoto
Journal of Applied Physics 120 103902 2016.9
More details
Language：English Publishing type：Research paper (scientific journal)
-
Flux pinning properties in BaHfO3-doped SmBa2Cu3Oy films on metallic substrates fabricated with low temperature growth Reviewed International journal
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Yuya Doki, Akira Ibi, Teruo Izumi, Takeharu Kato
IEEE Transactions on Applied Superconductivity 26 8000105 2016.6
More details
Language：English Publishing type：Research paper (scientific journal)
-
微細組織制御による超伝導膜の臨界電流特性制御 Invited Reviewed
一瀬 中, 三浦 峻, 杉原 和樹, 鶴田 彰宏, 一野 祐亮, 吉田 隆, 淡路 智, 松本 要
日本金属学会誌 80 420 - 427 2016.5
More details
Language：Japanese Publishing type：Research paper (scientific journal)
-
Vortex pinning at low temperature under high magnetic field in SmBa2Cu3Oy superconducting films with high number density and small size of BaHfO3 nano-rods Reviewed International journal
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Akihiro Tsuruta, Kaname Matsumoto, Ataru Ichinose, Satoshi Awaji
Superconductor Science and Technology 28 114006 2015.10
More details
Language：English Publishing type：Research paper (scientific journal)
-
Superconducting properties in SmBa2Cu3Oy films with high density of BaHfO3 nano-rods fabricated with a seed layer Reviewed International journal
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Akihiro Tsuruta, Kaname Matsumoto, Ataru Ichinose, Satoshi Awaji
IEEE Transactions on Applied Superconductivity 25 6604904 2015.6
More details
Language：English Publishing type：Research paper (scientific journal)
-
Determinant for self-organization of BaMO3 nanorods included in vapor-phase-grown REBa2Cu3Oy films Invited Reviewed International journal
Yusuke Ichino, Akihiro Tsuruta, Shun MIURA, Yutaka Yoshida, Masateru Yoshizumi, Teruo Izumi
IEEE Transactions on Applied Superconductivity 25 6604506 2015.6
More details
Language：English Publishing type：Research paper (scientific journal)
-
Magnetic field of BG-VG transition depending on the nanorods shape in BaHfO3-doped SmBa2Cu3Oy films Reviewed International journal
Akihiro Tsuruta, Yutaka Yoshida, Yusuke Ichino, Shun MIURA, Ataru Ichinose, Kaname Matsumoto, Satoshi Awaji
IEEE Transactions on Applied Superconductivity 25 6602904 2015.6
More details
Language：English Publishing type：Research paper (scientific journal)
-
Characteristics of high-performance BaHfO3-doped SmBa2Cu3Oy superconducting films fabricated with a seed layer and low-temperature growth Reviewed International journal
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Kaname Matsumoto, Ataru Ichinose, Satoshi Awaji
Superconductor Science and Technology 28 065013 2015.4
More details
Language：English Publishing type：Research paper (scientific journal)
-
Flux pinning properties of a SmBa2Cu3Oy films including high number density of BaHfO3 nano-rods on LaAlO3 substrate Reviewed International journal
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Kaname Matsumoto, Ataru Ichinose, Satoshi Awaji
Journal of Superconductivity and Novel Magnetism 28 367 - 369 2014.9
More details
Language：English Publishing type：Research paper (international conference proceedings)
-
Flux pinning properties and microstructures of a SmBa2Cu3Oy films with high number density of BaHfO3 nano-rods deposited by using low-temperature growth technique Reviewed International journal
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Akihiro Tsuruta, Kaname Matsumoto, Ataru Ichinose, Satoshi Awaji
Japanese Journal of Applied Physics 53 090304 2014.8
More details
Language：English Publishing type：Research paper (scientific journal)
-
Improvement of critical current densities in SmBa2Cu3Oy films with BaHfO3 nano-rods using low temperature growth technique Reviewed International journal
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Ataru Ichinose, Kaname Matsumoto, Satoshi Awaji
Journal of Physics 507 022021 2014.6
More details
Language：English Publishing type：Research paper (international conference proceedings)
-
LTG法を用いて作製したBaHfO3添加SmBa2Cu3Oy薄膜の超伝導特性及び微細構造観察 Reviewed
三浦 峻, 吉田 隆, 一野祐亮, 一瀬中, 松本要, 淡路智
低温工学 49 123 - 130 2014.5
More details
Language：Japanese Publishing type：Research paper (scientific journal)
-
高濃度BaHfO3添加SmBa2Cu3Oy薄膜における磁束ピンニング特性と不可逆磁場曲線 Reviewed
鶴田彰宏, 吉田隆, 一野祐亮, 三浦 峻, 一瀬中, 松本要, 淡路智
低温工学 2014.5
More details
Language：Japanese Publishing type：Research paper (scientific journal)
-
ナノロッド形態制御による臨界電流特性の向上 -成長条件の制御による高密度ナノロッドの形成- Reviewed
一瀬中, 鶴田彰宏, 三浦 峻, 一野祐亮, 吉田 隆
低温工学 48 485 - 492 2013.12
More details
Language：Japanese Publishing type：Research paper (scientific journal)
Presentations
Presentations
-
Strategies of superconducting motors aimed at future cryo-electric aircraft Invited International conference
Shun Miura
The Applied Superconductivity Conference 2024 (The Early Career Plenary session) 2024.9
More details
Event date： 2024.9
Language：English Presentation type：Oral presentation (keynote)
Country：United States
-
Fundamental technologies including coil-level transpositions for fully superconducting motors aimed at cryo-electric aircraft
Shun MIURA, Hiroshi MIYAZAKI, Masataka Iwakuma
The 5th Joint Workshop between Victoria University of Wellington and Kyoto University 2024.11
More details
Event date： 2024.11
Language：English Presentation type：Oral presentation (general)
Venue：Wellington Country：New Zealand
-
Development and Trial Test of a Fully Superconducting Motor with REBCO Tapes at Liquid Nitrogen Temperatures for Aircraft Propulsion
Shun Miura
3rd International Conference On Emissions Free Air Transport Through Superconductivity 2023.10
More details
Event date： 2023.10
Language：English Presentation type：Oral presentation (general)
Venue：Bristol Country：United Kingdom
-
台形コイルを用いた超伝導誘導機の電磁解析
山崎 亮斗, 岡出 祐汰, 宮崎 寛史, 吉田 幸市, 佐々 滉太, 三浦 峻, 岩熊 成卓
第104回 低温工学・超電導学会研究発表会 2022.12
More details
Event date： 2023.4
Language：Japanese
Country：Japan
-
Current Distributions of Multi-strand Parallel Conductors Composed of REBa2Cu3Oy Superconducting Tapes in Armature Windings for Fully-superconducting Rotating Machines International conference
Shun Miura, Asato Kobun, Atsushi Takashima, Hiromasa Sasa, Hiroshi Miyazaki, Akifumi Kawagoe, Masataka Iwakuma
ASC2022 2022.10
More details
Event date： 2023.4
Language：English
Venue：Hawaii Country：United States
-
Electromagnetic Design of a 400 kW REBCO Fully Superconducting Synchronous Motor for Airplane by Finite Element Method Analysis International conference
Hiromasa Sasa, Hiroshi Miyazaki, Shun Miura, Koichi Yoshida, Seiki Sato, Yuuta Okade, Isamu Sagara, Masataka Iwakuma, Masayuki Konno, Yoshiji Hase, Yuichiro Sasamori, Hirokazu Hirai, Shinya Hasuo, Teruo Izumi
ASC2022 2022.10
More details
Event date： 2023.4
Language：English
Country：Japan
-
AC loss characteristics of stacked REBCO double pancake coils cooled by liquid nitrogen International conference
Koudai Jingami, Wataru Akaike, Koichi Yoshida, Hiromasa Sasa, Shun Miura, Hiroshi Miyazaki, Masataka Iwakuma
ASC2022 2022.10
More details
Event date： 2023.4
Language：English
Country：Japan
-
Experimental Evaluation of Current Distribution in Armature Coils Composed of REBCO Double Pancakes With Varying Number of Parallel Conductors International conference
Asato Kobun, Atsushi Takashima, Koichi Yoshida, Hiromasa Sasa, Shun Miura, Hiroshi Miyazaki, Masataka Iwakuma
ASC2022 2022.10
More details
Event date： 2023.4
Language：English
Country：Japan
-
An armature coil crossed with two different sizes of REBCO racetrack double pancakes International conference
Atsushi Takashima, Asato Kobun, Hiromasa Sasa, Koichi Yoshida, Shun Miura, Hiroshi Miyazaki, Akifumi Kawagoe, Masataka Iwakuma
ASC2022 2022.10
More details
Event date： 2023.4
Language：Japanese
Country：Japan
-
電気推進システム用限流機能付き10 MVA-6.9/1.0 kV 超伝導変圧器の軽量化検討
尾形桐弥, 岩熊成卓, 宮崎寛史, 三浦峻, 佐々滉太, 中野基貴
第75回電気・情報関係学会九州支部連合大会 2022.9
More details
Event date： 2023.4
Language：Japanese
Country：Japan
-
REBCO超伝導線材を用いた2層パンケーキコイルの液体窒素冷却による交流損失評価
赤池航, 岩熊成卓, 宮崎寛史, 三浦峻, 佐々滉太, 陣上広大, 大石遼真, 藤田真司, 大保雅載
第75回電気・情報関係学会九州支部連合大会 2022.9
More details
Event date： 2023.4
Language：Japanese
Country：Japan
-
航空機用超伝導動機モータのロータ径と出力密度の関係
淺田基寛, 宮崎寛史, 岩熊成卓, 佐々滉大, 三浦峻, 國安天斗
第75回電気・情報関係学会九州支部連合大会 2022.9
More details
Event date： 2023.4
Language：Japanese
Country：Japan
-
転位並列導体で構成した全超伝導回転機の電機子コイルの大電流容量化に関する研究
公文 麻人, 増田 陽平, 三浦 峻, 宮﨑 寛史, 吉田 幸市, 佐藤 誠樹, 佐々 滉太, 岩熊 成卓
低温工学・超電導学会 九州・西日本支部 2022年度若手セミナー 2022.11
More details
Event date： 2023.4
Language：Japanese
Country：Japan
-
転位並列導体で構成した全超伝導回転機の電機⼦コイル向けREBCOレーストラック型ダブルパンケーキコイルにおける均流化コンセプトの実験的評価
公文 麻人, 増田 陽平, 山﨑 亮斗、岡出 祐汰、三浦 峻, 宮﨑 寛史, 吉田 幸市, 佐藤 誠樹, 佐々 滉太, 岩熊 成卓
第104回 低温工学・超電導学会研究発表会 2022.12
More details
Event date： 2023.4
Language：Japanese
Country：Japan
-
High efficiency and high power electric propulsion system for airplane by superconductivity: Development of a REBCO fully superconducting motor and cooling system Invited International conference
Masataka Iwakuma, Hiroshi Miyazaki, Shun Miura, Hiromasa Sasa, Koichi Yoshida, Seiki Sato, Isamu Sagara, Yoshiji Hase, Masayuki Konno, Yuichiro Sasamori, Hirokazu Honda, Toshihiko Okabe, Hirokazu Hirai, Sergey Lee, Shinya Hasuo, Miyuki Nakamura, Nobuhiro Mido, Kazuhisa Adachi, Kei Shiohara, Teruo Izumi, Akifumi Kawagoe, Manato Deki, Hiroshi Amano, Yasuhiko Kawaguchi, Tatsuya Yamasaki
ASC2022 2022.10
More details
Event date： 2022.10
Language：English Presentation type：Oral presentation (general)
Venue：Hawaii Country：United States
-
Thermal-Electromagnetic Coupled Analysis Considering AC Losses in REBCO Windings at 65 K of 10 MW Fully-Superconducting Synchronous Generators for Electric Aircraft International conference
H. Sasa, S. Miura, H. Miyazaki, T. Sasayama, T. Yoshida, K. Yamamoto, M. Iwakuma, Y. Hase, Y. Sasamori, H. Honda, M. Konno, T. Izumi
International Conference on Magnet Technology 27 2021.11
More details
Event date： 2022.6
Language：English
Country：Japan
-
Design Study of 3f-10 MVA-6.9/1.0 kV REBCO Superconducting Transformers with Lightweight and Current-Limiting Function for an E-Aircraft Propulsion System International conference
M. Sumida, H. Sasa, S. Miura, H. Miyazaki, M. Iwakuma, M. Konno, T. Izumi
International Conference on Magnet Technology 27 2021.11
More details
Event date： 2022.6
Language：English
Country：Japan
-
Numerical Analysis of 2 MW Fully Superconducting Synchronous Motor for Electric Aircraft Considering AC Loss in Field Winding International conference
K. Matsumoto, H. Sasa, S. Miura, K. Matsumoto, H. Miyazaki, T. Yoshida, T. Sasayama, K. Yamamoto, M. Iwakuma, A. Kawagoe, T. IZUMI, Y. Sasamori, H. Honda, M. Konno, Y. Hase
International Conference on Magnet Technology 27 2021.11
More details
Event date： 2021.11
Language：English
Venue：Fukuoka Convention Center Country：Japan
-
Estimation of Ac loss for a high-power density 10 MW REBCO superconducting synchronous generator cooled by sub-cooled liquid nitrogen International conference
K. Noda, H. Sasa, H. Miyazaki, S. Miura, T. Yoshida, T. Sasayama, M. Iwakuma, A. Kawagoe, T. Izumi, M. Konno, Y. Sasamori, H. Honda, Y. Hase, M. Shutoh
International Symposium on Superconductivity 2021 2021.11
More details
Event date： 2021.11
Language：English
Venue：Online Country：Japan
-
Experimental Evaluation of Current Distribution in Three-Strand Transposed Parallel Conductors Composed of REBCO Superconducting Tapes International conference
Y. Omanyuda, H. Sasa, H. Miyazaki, S. Miura, M. Iwakuma
International Conference on Magnet Technology 27 2021.11
More details
Event date： 2021.11
Language：English
Venue：Fukuoka Convention Center Country：Japan
-
REBCO高温超伝導線材の交流損失と機器応用 Invited
三浦峻
九州・西日本支部 2020年度若手セミナー・支部研究成果発表会 2020.10
More details
Event date： 2020.10
Language：Japanese Presentation type：Oral presentation (general)
Venue：オンライン Zoom Country：Japan
-
REBCO 超電導線材を用いた 1 kW 級全超電導同期モータの冷却特性試験および運転試験 Invited
佐々滉太、三浦峻、笹山瑛由、吉田敬、山本薫、岩熊成卓、川越明史、和泉輝郎、富岡章、今野雅之、笹森雄一郎、本田博一、長谷吉二、首藤雅夫、梅野高裕
2020年度 若手セミナー・支部研究成果発表会 2020.10
More details
Event date： 2020.10
Language：Japanese
Venue：ZOOMミーティングルーム Country：Japan
-
REBCO線材を用いた移動体用10MVA超伝導変圧器の軽量設計と限流機能の数値解析
住田雅志，佐々滉太，三浦 峻，岩熊成卓，今野雅行，和泉輝郎
令和２年電気学会全国大会 2020.3
More details
Event date： 2020.3
Language：Japanese
Country：Japan
-
電動航空機へ向けた全超電導同期発電機における3次元有限要素法を用いた界磁巻線形状の比較検討
野田開仁，須河内良多，佐々滉太，三浦 峻，吉田 敬，笹山瑛由，岩熊成卓，笹森雄一郎，本田博一，長谷吉二
令和２年電気学会全国大会 2020.3
More details
Event date： 2020.3
Language：Japanese
Country：Japan
-
回転機応用 Invited
三浦峻
2019年度第2回 中温度域超伝導材料の実用性能に関する調査研究会 2020.1
More details
Event date： 2020.1
Language：Japanese Presentation type：Oral presentation (general)
Venue：沖縄コンベンションセンター Country：Japan
-
MT26, EUCAS2019: 回転機 Invited
三浦峻
2019年第4回冷凍部会-国際会議報告会- 2019.10
More details
Event date： 2019.10
Language：Japanese Presentation type：Oral presentation (general)
Venue：KKR沼津はまゆう Country：Japan
-
REBa2Cu3Oy超伝導線材を用いた1kW級全超伝導同期モータの冷却特性
相川 拓也、佐々 滉太、三浦峻、小宮匡貴、須河内良多、笹山瑛由、吉田敬、山本薫、岩熊成卓、和泉輝郎、富岡章、今野雅之、梅野高裕
2019年度低温工学・超電導学会 九州・西日本支部 支部研究成果発表会 2019.10
More details
Event date： 2019.10
Language：Japanese
Venue：湯布院 Country：Japan
-
REBCO3本並列導体の付加的交流損失の評価
古川琢馬、三浦峻、岩熊成卓
2019年度低温工学・超電導学会 九州・西日本支部 支部研究成果発表会 2019.10
More details
Event date： 2019.10 - 2018.10
Language：Japanese
Venue：湯布院 Country：Japan
-
Conceptual Design of Superconducting Induction Motors using REBa2Cu3Oy Superconducting tapes for Electric Aircraft International conference
K. Ozaki, Y. Doi, K. Yoshida, S. Miura, T. Sasayama, T. Yoshida, K. Yamamoto, M. Iwakuma, A. Tomioka, M. Konno, T. Izumi
International Conference on Magnet Technology 26 2019.9
More details
Event date： 2019.9 - 2020.9
Language：English
Venue：vancouber Country：Canada
-
REBCO線材を用いた超伝導誘導電動機の概念設計と電磁解析
土居祐麻, 尾崎高一郎, 吉田幸市, 三浦 峻, 笹山瑛由, 山本 薫,吉田敬, 岩熊成卓, 富岡昭, 今野雅行, 和泉輝郎
2019年度電気・情報関係学会九州支部連合大会 2019.9
More details
Event date： 2019.9
Language：Japanese
Venue：九州工業大学 Country：Japan
-
Additional AC Loss of Three-strand Parallel Conductors Composed of REBCO Tapes International conference
S. Miura, T. Furukawa, M. Iwakuma
14th European Conference on Applied Superconductivity 2019.9
More details
Event date： 2019.9
Language：English
Venue：Glasgow Country：United Kingdom
-
Development of 1 kW Fully-superconducting Synchronous Motor with REBCO Wires International conference
H. Sasa, M. Iwakuma, S. Miura, M. Komiya, T. Aikawa, T. Sasayama, T. Yoshida, K. Yamamoto, T. Izumi, A. Tomioka, M. Konno, T. Umeno
14th European Conference on Applied Superconductivity 2019.9
More details
Event date： 2019.9
Language：English
Venue：Glasgow Country：United Kingdom
-
Lightweight Design of 6.9/1.0 kV-10 MVA REBCO Superconducting Transformer
G. Kawasaki, M. Iwakuma, S. Miura, A. Tomioka, M. Konno, T. Izumi
14th European Conference on Applied Superconductivity 2019.9
More details
Event date： 2019.9
Language：English
Venue：Glasgow Country：United Kingdom
-
Electromagnetic design of induction motors with HTS tapes International conference
Y. Doi, K. Ozaki, K. Yoshida, S. Miura, T. Sasayama, T. Yoshida, K. Yamamoto, M. Iwakuma, A. Tomioka, M. Konno, T. Izumi
14th European Conference on Applied Superconductivity 2019.9
More details
Event date： 2019.9
Language：English
Venue：Glosgow Country：United Kingdom
-
Electromagnetic Design of 2 MW Fully-Superconducting Synchronous Motors International conference
R. Sugouchi, T. Aikawa, M. Komiya, S. Miura, M. Iwakuma, K. Yoshida, T. Sasayama, K. Yamamoto, A. Tomioka, M. Konno, T. Izumi
14th European Conference on Applied Superconductivity 2019.9
More details
Event date： 2019.9
Language：English
Venue：Glasgow Country：United Kingdom
-
Theoretical and Experimental Investigations on Additional AC Loss Properties of Three-Strand Parallel Conductors Composed of REBCO Tapes International conference
T. Furukawa, S. Miura, M. Iwakuma
International Conference on Magnet Technology 26 2019.9
More details
Event date： 2019.9
Language：English
Venue：Vancouber Country：Canada
-
Lightweight Design and Fault Current Limiting Analysis of 6.9/1.0 kV-10 MVA REBCO Superconducting Transformers for Electric Aircraft International conference
G. Kawasaki, M. Iwakuma, S. Miura, A. Tomioka, M. Konno, T. Izumi
International Conference on Magnet Technology 26 2019.9
More details
Event date： 2019.9
Language：English
Venue：Vancouber Country：Canada
-
Conceptual Design and Electromagnetic Analysis of 2 MW Fully-Superconducting Synchronous Motors with Superconducting Magnetic Shields for Turboelectric Propulsion System International conference
R. Sugouchi, M. Komiya, S. Miura, M. Iwakuma, K. Yoshida, T. Sasayama, T. Yoshida, K. Yamamoto, A. Tomioka, M. Konno, T. Izumi
International Conference on Magnet Technology 26 2019.9
More details
Event date： 2019.9
Language：English
Venue：Vancouber Country：Canada
-
Design and Numerical Analysis of 10 MW-class Fully-Superconducting Synchronous Generators Installing the New Casing Structure for Turboelectric Propulsion System International conference
M. Komiya, R. Sugouchi, H. Sasa, S. Miura, M. Iwakuma, T. Yoshida, T. Sasayama, K. Yamamoto, A. Tomioka, M. Konno, T. Izumi
International Conference on Magnet Technology 26 2019.9
More details
Event date： 2019.9
Language：English
Venue：Vancouber Country：Canada
-
Electromagnetic design of tens MW-class fully-superconducting wind power generators with high-performance REBa2Cu3Oy wires International conference
S. Miura, M. Iwakuma, T. Izumi
International Conference on Magnet Technology 26 2019.9
More details
Event date： 2019.9
Language：English
Venue：Vancouber Country：Canada
-
REBa2Cu3Oy超伝導線材を用いた1kW級全超伝導同期モータの冷却特性
佐々滉太、三浦峻、小宮匡貴、須河内良多、笹山瑛由、吉田敬、山本薫、岩熊成卓、和泉輝郎、富岡章、今野雅之、梅野高裕
2019年度電気・情報関係学会九州支部連合大会 2019.9
More details
Event date： 2019.9
Language：Japanese
Venue：九州工業大学 Country：Japan
-
Scaling Law of AC Loss in Stacked REBa2Cu3Oy Superconducting Tapes International conference
H. Sasa, G. Kawasaki, S. Miura, M. Iwakuma, T. Izumi, T. Machi, A. Ibi , Scaling Law of AC Loss in Stacked REBa2Cu3Oy Superconducting Tapes
Applied Superconductivity Conference(ASC2018) 2018.10
More details
Event date： 2019.6
Language：English
Country：Japan
-
Investigation of Current-sharing properties of parallel conductors composed of REBa2Cu3Oy superconducting tapes for NMR International conference
S. Sagawa, S. Miura, Y. Fukumoto, K. Yoshida, S. Sato, T. Izumi, M. Iwakuma
Applied Superconductivity Conference(ASC2018) 2018.10
More details
Event date： 2019.6
Language：English
Country：Japan
-
航空機用電動推進システムへ向けた2 MW級REBCO全超伝導同期電動機の概念設計と数値解析
須河内良多、相川拓也、小宮匡貴、三浦峻、吉田敬、笹山瑛由、岩熊成卓、吉田幸市、富岡章、今野雅行、和泉輝郎
平成31年電気学会全国大会 2019.3
More details
Event date： 2019.3
Language：Japanese
Country：Japan
-
MRI用3本高温超伝導並列導体の電流分流の解析
土居祐麻、佐川慎太郎、三浦 峻、岩熊成卓、福本祐介、吉田幸市、佐藤誠樹、和泉輝郎
平成31年電気学会全国大会 2019.3
More details
Event date： 2019.3
Language：Japanese
Country：Japan
-
風力発電へ向けた大容量の全超伝導同期発電機の基礎的検討
三浦 峻
九州大学エネルギーウィーク２０１９ 2019.1
More details
Event date： 2019.1 - 2019.2
Language：Japanese
Country：Japan
-
H. Sasa, G. Kawasaki, S. Miura, I. Iwakuma, T. Izumi, T. MacHi, A. Ibi
31st International Symposium on Superconductivity, ISS 2018 2019.10
More details
Event date： 2018.12
Language：English
Venue：Tsukuba, Ibaraki Country：Japan
In this study, we focused on the dependence of the AC loss in REBa2Cu3Oy (REBCO, RE = rare earth, Y, Eu, Gd) superconducting tapes stacked perpendicular to the tape face on the interval between the superconducting layers. The AC loss of the 2-layer stacked tapes with various interval in perpendicular field was investigated by pickup-coil method. The AC loss for external applied magnetic field, B m, below the penetration field, B p, increases with increasing the interval. In the case that the ratio of the distance between the neighboring superconducting layer, D, to the width of the tape, w, (D/w) is smaller than 0.1, the AC loss of 2-layer tapes decreased to 1/2 of that of 1-layer tape. On the other hand, in the case of D/w being larger than 0.1, the AC loss of 2-layer tapes was larger than 1/2 and it approached the AC loss of 1-layer tape with increasing D/w. From the result obtained in this study, it is predicted that, for B m below B p, the AC loss of stacked REBCO tapes with large D/w, such as multifilamentary tapes, is larger than the AC loss of stacked non-scribed REBCO tapes. However, for B m above B p: a large AC loss region, it is known that the AC loss of the multifilamentary tapes decreases compared with that of non-scribed tapes. Next step, AC loss of the multifilamentary tapes for B m below B p will be investigated experimentally and theoretically.
-
M. Komiya, T. Aikawa, K. Yoshida, S. Miura, M. Iwakuma, T. Yoshida, T. Sasayama, A. Tomioka, M. Konno, T. Izumi
31st International Symposium on Superconductivity, ISS 2018 2019.10
More details
Event date： 2018.12
Language：English
Venue：Tsukuba, Ibaraki Country：Japan
10 MW fully superconducting generators, comprising REBCO superconducting tapes with various armature winding configurations, were designed. The influences of these configurations, such as a distributed-winding and a concentrated-winding configuration, on AC loss, output power density, and output voltage waveform were evaluated. As a result, the short-pitch distributed-winding model exhibited the best properties among all the models. In particular, the AC loss of the armature winding was approximately half that of the concentrated winding. Furthermore, the distortion factor was lower than 10%.
-
Dependence of AC Loss in Stacked REBa2Cu3Oy Superconducting Tapes on the Interval among Tapes under Perpendicular Magnetic Field
H. Sasa, G. Kawasaki, S. Miura, M. Iwakuma, T. Izumi, T. Machi, A. Ibi
International Symposium on Superconductivity(ISS2018) 2018.12
More details
Event date： 2018.12
Language：English
Country：Japan
-
Numerical Analysis of AC loss and Power Density of 10 MW Fully Superconducting Generators for Electric Aircrafts from the viewpoint of Armature Winding Configuration International conference
M. Komiya, T. Aikawa, K. Yoshida, S. Miura, M. Iwakuma, T. Yoshida, T. Sasayama, A. Tomioka, M. Konno, T. Izumi
International Symposium on Superconductivity(ISS2018) 2018.12
More details
Event date： 2018.12
Language：English
Country：Japan
-
異なる端部接触抵抗のY系超伝導並列導体の付加的交流損失
古川琢馬, 三浦峻, 岩熊成卓
第97回 低温工学・超電導学会研究発表会 2018.11
More details
Event date： 2018.11
Language：Japanese
Country：Japan
-
積層した REBa2Cu3Oy超伝導テープ線材における中心到達磁界を 使った交流損失の予測手法
川﨑剛輝, 佐々滉太, 三浦峻, 岩熊成卓, 和泉輝郎, 町敬人, 衣斐顕
第97回 低温工学・超電導学会研究発表会 2018.11
More details
Event date： 2018.11
Language：Japanese
Country：Japan
-
Experimental Study Using Pick-Up Coil Method on Additional AC Loss of Two-Strand Parallel Conductors Composed of REBa2Cu3Oy Superconducting Tapes International conference
Shun Miura, Soichiro Oki, Takuma Furukawa, and Masataka Iwakuma
Applied Superconductivity Conference 2018.10
More details
Event date： 2018.10 - 2018.11
Language：English Presentation type：Oral presentation (general)
Venue：Washington State Convention Center Country：United States
-
Study on the Current Limiting Cooperation of Superconducting Transformers and Cables International conference
F. Nakamura, M. Iwakuma, S. Miura, K. Yoshida, A. Tomioka, M. Konno
Applied Superconductivity Conference(ASC2018) 2018.10
More details
Event date： 2018.10
Language：English
Country：Japan
-
Design Study of 10 MW REBa2Cu3Oy Fully Superconducting Synchronous Generator for Electric Aircraft
K. Komiya, M. Iwakuma, S. Miura, S. Fukuda, T. Aikawa, S. Sato, K. Yoshida, Y. Hase, A. Tomioka, M. Konno, T. Izumi
Applied Superconductivity Conference(ASC2018) 2018.10
More details
Event date： 2018.10
Language：English
Country：Japan
-
Design Study of 5 MW REBa2Cu3Oy Fully Superconducting Synchronous Motor for Electric Aircraft International conference
T. Aikawa, M. Iwakuma, S. Miura, S. Fukuda, M. Komiya, K. Yoshida, T. Sasayama, A. Tomioka, M. Konno, T. Izumi
Applied Superconductivity Conference(ASC2018) 2018.10
More details
Event date： 2018.10
Language：English
Country：Japan
-
ピックアップコイル法による2本REBa2Cu3Oy並列導体の交流損失評価
三浦 峻，沖 総一郎, 古川 琢馬, 岩熊 成卓
第96回2018年度春季低温工学・超電導学会 2018.5
More details
Event date： 2018.5
Language：Japanese Presentation type：Oral presentation (general)
Venue：タワーホール船堀 Country：Japan
-
希土類系高温超伝導線材の高性能化とその応用 Invited
三浦 峻
第５回応用物理学セミナー 2018.5
More details
Event date： 2018.5
Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech
Venue：岐阜大学 Country：Japan
-
鞍型ピックアップコイル法によるマルチフィラメントREBCO超伝導テープ線材の交流損失の外部磁場印加角度依存性の評価
佐々滉太、岩熊成卓、伊藤哲也、三浦峻、和泉輝郎、町敬人、衣斐顕
第95回 低温工学・超電導学会 2017.11
More details
Event date： 2017.11
Language：Japanese
Venue：高知市文化プラザかるぽーと Country：Japan
-
Y系超伝導転位並列導体で構成したコイルの付加的交流損失特性（4）
沖総一郎、三浦峻、岩熊成卓
第95回 低温工学・超電導学会 2017.11
More details
Event date： 2017.11
Language：Japanese
Country：Japan
-
超伝導変圧器と超伝導ケーブルの限流協調に関する検討(4)
中村文弥,徳地貴行,吉田幸市,三浦峻,岩熊成卓,富岡章,今野雅之,足立和久
第95回 低温工学・超電導学会 2017.11
More details
Event date： 2017.11
Language：Japanese
Venue：高知市文化プラザかるぽーと Country：Japan
-
Enhancement of flux pinning by random pinning centers at 4.2 K in BaHfO3-doped SmBa2Cu3Oy coated conductors International conference
S. Miura, Y. Yoshida, Y. Tsuchiya, Y. Ichino, S. Awaji, K. Matsumoto, A. Ichinose, A. Ibi, T. Izumi, M. Iwakuma
13th European Coference on Aplied Superconductivity 2017.9
More details
Event date： 2017.9
Language：English
Country：Switzerland
-
BaHfO3添加SmBa2Cu3Oy超伝導線材の各運用領域における主要な磁束ピンニングセンターの同定
三浦 峻, 一野 祐亮, 土屋 雄司, 吉田 隆, 一瀬 中, 淡路 智, 松本 要, 衣斐 顕, 和泉 輝郎, 岩熊 成卓
第78回応用物理学会秋季学術講演会 2017.9
More details
Event date： 2017.9
Language：Japanese
Country：Japan
-
ダブルパンケーキコイル状に巻いた酸化物超伝導転位並列導体の自己磁場を考慮した電流分流特性の解析(1)
佐川慎太郎,三浦峻,岩熊成卓,福本祐介,吉田幸市,佐藤誠樹,和泉輝郎,富岡章,今野雅行
平成29年度電気・情報関係学会九州支部連合大会 2017.9
More details
Event date： 2017.9
Language：Japanese
Venue：琉球大学 Country：Japan
-
Y系超伝導テープを用いた転位並列導体の付加的交流損失（1）
沖総一郎、三浦峻、岩熊成卓
平成29年度電気・情報関係学会九州支部連合大会 2017.9
More details
Event date： 2017.9
Language：Japanese
Venue：琉球大学 Country：Japan
-
Design Study of 2MW Fully Superconducting Synchronous Motor International conference
S. Fukuda, M. Iwakuma, S. Miura, S. Sato, K. Yoshida, Y. Hase, A. Tomioka, M. Konno and T. Izumi
13th European Conference on Applied Superconductivity 2017.9
More details
Event date： 2017.9
Language：English
Venue：ジュネーブ Country：Switzerland
-
AC Loss Properties of Stacked Multifilamentary REBCO Superconducting Tapes International conference
T .Ito, M. Iwakuma, S. Miura, T. Izumi, K. Adachi, T. Machi, and A. Ibi
International Conference on Magnet Technology 25 2017.8
More details
Event date： 2017.8
Language：English
Country：Netherlands
-
Current sharing properties of REBCO superconducting parallel conductors wound into a coil International conference
S. Sagawa, S. Honda, S. Miura, M. Iwakuma, Y. Fukumoto, K. Yoshida, S. Sato, T. Izumi, A. Tomioka and M. Konno
International Conference on Magnet Technology 25 2017.8
More details
Event date： 2017.8
Language：English
Venue：アムステルダム Country：Netherlands
-
Additional ac loss properties of REBCO superconducting two-strand parallel conductors
S. Oki, S. Miura, M. Iwakuma
International Conference on Magnet Technology 25 2017.8
More details
Event date： 2017.8
Language：English
Venue：アムステルダム Country：Netherlands
-
鞍型ピックアップコイル法によるマルチフィラメントREBCO超伝導テープ線材の磁化・交流損失特性の評価
佐々滉太、伊藤哲也、三浦峻、岩熊成卓、和泉輝郎、町敬人、衣斐顕
2017年度低温工学・超電導学会九州・西日本支部若手セミナー 2017.7
More details
Event date： 2017.7
Language：Japanese
Venue：奄美大島（奄美市AiAiひろば） Country：Japan
-
ソレノイドコイルに巻いた2本超伝導転位並列導体の付加的交流損失特性(1)
沖総一郎,三浦峻,岩熊成卓
第94回 低温工学・超電導学会 2017.5
More details
Event date： 2017.5
Language：Japanese
Venue：タワーホール船堀 Country：Japan
-
RE系超伝導薄膜における微細組織制御技術と磁束ピンニング特性 Invited
三浦 峻
第4回材料研究会/九州・西日本支部合同研究会 2017.1
More details
Event date： 2017.1
Language：Japanese Presentation type：Oral presentation (general)
Venue：九州工業大学飯塚キャンパス Country：Japan
-
低温成膜により制御したBaHfO3ナノロッドを有するSmBa2Cu3Oy超伝導薄膜のJc特性
三浦 峻, 一野祐亮, 徐千語, 吉田隆, 一瀬 中, 淡路 智, 松本要
2016年第41回応用物理学会秋季学術講演会 2016.9
More details
Event date： 2016.9
Language：Japanese Presentation type：Oral presentation (general)
Venue：朱鷺メッセ Country：Japan
-
Jc anisotropy at low measurement temperatures in SmBa2Cu3Oy superconducting tapes with BaHfO3 controlled via low-temperature growth International conference
Shun MIURA, Yutaka Yoshida, Yuji Tsuchiya, Qianyu Xu, Yuya Doki, Yusuke Ichino, Satoshi Awaji, Kaname Matsumoto, Ataru Ichinose
Applied Superconductivity Conference 2016 2016.9
More details
Event date： 2016.9
Language：English Presentation type：Oral presentation (general)
Venue：Denver Country：United States
-
低温成膜手法により作製したBaHfO3添加SmBa2Cu3Oy薄膜線材の低測定温度域における臨界電流特性
三浦 峻, 吉田隆, 一野祐亮, 土屋雄司, 徐千語, 道木裕也, 淡路智, 一瀬中, 松本要, 衣斐顕, 和泉輝郎
2016年度第93回春季低温工学・超電導学会 2016.5
More details
Event date： 2016.5 - 2016.6
Language：Japanese Presentation type：Oral presentation (general)
Venue：タワーホール船堀 Country：Japan
-
Improvement of critical current density on REBa2Cu3Oy superconducting films with BaMO3 inclusions via nano-technologies International conference
Shun MIURA, Yusuke Ichino, Xu Qianyu, Ataru Ichinose, Satoshi Awaji, Yutaka Yoshida
International Symposium on EcoTopia Science 2015 2015.11
More details
Event date： 2015.11
Language：English Presentation type：Oral presentation (general)
Venue：Nagoya Country：Japan
-
Transport properties at the grain boundary in BaHfO3-doped SmBa2Cu3Oy films fabricated with low-temperature growth International conference
Shun MIURA, Yusuke Ichino, Ataru Ichinose, Yutaka Yoshida
The International Union of Materials Research Societies-International Conference on Advanced Materials 2015 2015.10
More details
Event date： 2015.10
Language：English Presentation type：Oral presentation (general)
Venue：Jeju Country：Korea, Republic of
-
Strongly enhanced critical current density below liquid nitrogen temperature on BaHfO3-doped SmBa2Cu3Oy superconducting films fabricated at very low growth temperature International conference
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Kaname Matsumoto, Ataru Ichinose, Satoshi Awaji
International Conference on Magnet Technology 24 2015.10
More details
Event date： 2015.10
Language：English Presentation type：Oral presentation (general)
Venue：Seoul Country：Korea, Republic of
-
低温成膜法により制御した高密度ナノロッドを有する SmBa2Cu3Oy薄膜の低温強磁場Jcの向上
三浦 峻, 吉田隆, 一野祐亮, 徐千語, 松本 要, 一瀬 中, 淡路 智
2015年度 九州・西日本支部研究会／第３回材料研究会 2015.10
More details
Event date： 2015.10
Language：Japanese Presentation type：Oral presentation (general)
Venue：KKR山口あさくら Country：Japan
-
高密度BaHfO3ナノロッドを導入したREBa2Cu3Oy¬超伝導薄膜の磁場中超伝導特性
三浦 峻, 一野祐亮, 一瀬中, 淡路智, 吉田隆
平成27年度 電気学会 基礎・材料・共通部門 部門大会 2015.9
More details
Event date： 2015.9
Language：Japanese Presentation type：Oral presentation (general)
Venue：金沢大学 Country：Japan
-
BaHfO3ナノロッドの形状の違いがバイクリスタル基板上SmBa2Cu3Oy超伝導薄膜の粒界特性に与える影響
三浦 峻, 一野祐亮, 一瀬中, 吉田隆
2015年第76回応用物理学会秋季学術講演会 2015.9
More details
Event date： 2015.9
Language：Japanese Presentation type：Oral presentation (general)
Venue：名古屋国際会議場 Country：Japan
-
Microstructures at low-angle grain boundary in SmBa2Cu3Oy superconducting films with BaHfO3 nano-rods International conference
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Akihiro Tsuruta, Kaname Matsumoto, Ataru Ichinose, Satoshi Awaji
Material Research Society 2015 2015.4
More details
Event date： 2015.4
Language：English Presentation type：Oral presentation (general)
Venue：City and County of San Francisco Country：Other
-
Flux pinning properties on SmBCO superconducting films with high number density of BaHfO3 nano-rods at lower measurement temperatures International conference
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Akihiro Tsuruta, Kaname Matsumoto, Ataru Ichinose, Satoshi Awaji
International Workshop on Coated Conductors for Applications 2014 2014.11
More details
Event date： 2014.11 - 2014.12
Language：English Presentation type：Oral presentation (general)
Venue：Jeju Country：Korea, Republic of
-
Superconducting Properties and Microstructures in SmBa2Cu3Oy Films with High Number Density of BaHfO3 Nano-rods International conference
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Kaname Matsumoto, Ataru Ichinose, Satoshi Awaji
27th International Symposium on Superconductivity 2014.11
More details
Event date： 2014.11
Language：English Presentation type：Oral presentation (general)
Venue：Tokyo Country：Japan
-
低温成膜法により作製したBaHfO¬3添加REBCO超伝導薄膜の磁束ピンニング特性及び微細構造観察
三浦 峻, 吉田隆, 一野祐亮, 一瀬中
応用物理学会SC東海地区学術講演会 2014 2014.11
More details
Event date： 2014.11
Language：Japanese Presentation type：Oral presentation (general)
Venue：名古屋大学 Country：Japan
-
成膜基板温度及び添加量を変化させたBaHfO3添加LTG-SmBa2Cu3Oy薄膜の微細構造観察
三浦 峻, 吉田隆, 一野祐亮, 松本要, 一瀬中, 淡路智
2014年第75回応用物理学会秋季学術講演会 2014.9
More details
Event date： 2014.9
Language：Japanese Presentation type：Oral presentation (general)
Venue：北海道大学 Country：Japan
-
Flux pinning performance at low temperature in SmBa2Cu3Oy films with high number density of BaHfO3 nano-rods fabricated by LTG technique International conference
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Akihiro Tsuruta, Kaname Matsumoto, Ataru Ichinose, Satoshi Awaji
Applied Superconductivity Conference 2014 2014.8
More details
Event date： 2014.8
Language：English
Venue：Charlotte Country：United States
-
LTG法により作製したBaHfO3添加SmBa2Cu3Oy薄膜の低温磁場中Jc特性
三浦 峻, 一野祐亮, 鶴田彰宏, 松本要, 一瀬中, 淡路智
2014年度第89回春季低温工学・超電導学会 2014.5
More details
Event date： 2014.5
Language：Japanese Presentation type：Oral presentation (general)
Venue：タワーホール船堀 Country：Japan
-
Flux pinning properties of SmBa2Cu3Oy films including high number density of BaHfO3 nano-rods on LaAlO3 substrate International conference
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Ataru Ichinose, Kaname Matsumoto, Satoshi Awaji
4th International Conference on Superconductivity and Magnetism 2014.4
More details
Event date： 2014.4 - 2014.5
Language：English
Venue：Antalya Country：Turkey
-
Surface morphologies and microstructures of SmBa2Cu3Oy superconducting films including BaHfO3 nanorods grown at low substrate temperatures International conference
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Akihiro Tsuruta, Kaname Mastumoto, Ataru Ichinose, Satoshi Awaji
International Symposium on EcoTopia Science 2013 2013.12
More details
Event date： 2013.12
Language：English Presentation type：Symposium, workshop panel (public)
Venue：Nagoya Country：Japan
-
低温成膜法を用いて作製したSmBa2Cu3Oy薄膜中高密度BaMO3ナノロ ッドの磁束ピンニング特性
三浦 峻, 吉田隆, 一野祐亮, 松本要, 一瀬中, 淡路智
2013年度第88回秋季低温工学・超電導学会 2013.12
More details
Event date： 2013.12
Language：Japanese Presentation type：Oral presentation (general)
Venue：ウインク愛知 Country：Japan
-
Superconducting properties and microstructures of SmBCO films with BHO nanorods deposited by low temperature growth technique at various substrate temperatures International conference
Shun MIURA, Yutaka Yoshida, Yusuke Ichino, Kaname Mastumoto, Ataru Ichinose, Satoshi Awaji
26th International Symposium on Superconductivity 2013 2013.11
More details
Event date： 2013.11
Language：English
Venue：Tokyo Country：Japan
-
Growth mechanisms and surface morphologies of SmBa2Cu3Oy films with BaHfO3 deposited by pulsed laser deposition method using low temperature growth technique International conference
Shun MIURA, Yusuke Ichino, Ataru Ichinose, Yutaka Yoshida
The 7th East Asia Symposium on Superconductive Electronics 2013.10
More details
Event date： 2013.10
Language：English
Venue：Taipei Country：Taiwan, Province of China
-
異なる成膜温度で作製したBHO添加SmBCO薄膜の微細構造観察及び超伝導特性
三浦 峻, 一野祐亮, 吉田隆, 松本要, 一瀬中, 淡路智
2013年第74回応用物理学会秋季学術講演会 2013.9
More details
Event date： 2013.9
Language：Japanese Presentation type：Oral presentation (general)
Venue：同志社大学 Country：Japan
-
低温成膜法を用いて異なる成膜温度で作製したBaHfO3添加SmBa2Cu3Oy薄膜の磁束ピンニング特性
三浦 峻, 吉田 隆, 一野 祐亮, 松本 要, 一瀬 中, 淡路 智
2013年度第87回春季低温工学・超電導学会 2013.5
More details
Event date： 2013.5
Language：Japanese Presentation type：Oral presentation (general)
Venue：タワーホール船堀 Country：Japan
-
ターゲット交換法により作製したBaHfO3添加LTG-SmBa2Cu3Oyの超伝導特性及び微細構造観察
三浦 峻, 吉田 隆, 一野 祐亮, 松本 要, 一瀬 中, 淡路 智
2013年春季第60回応用物理学会春季学術講演会 2013.3
More details
Event date： 2013.3
Language：Japanese Presentation type：Oral presentation (general)
Venue：神奈川工科大学 Country：Japan
-
Surface morphologies of BaHfO3 doped high crystallinity SmBa2Cu3Oy films International conference
Shun MIURA, Akihiro Tsuruta, Yusuke Ichino, Yutaka Yoshida
International Workshop on Coated Conductor for Applications 2012 2012.11
More details
Event date： 2012.11
Language：English
Venue：Heidelberg Country：Germany
-
大小2種類のREBCOダブルパンケーキコイルを組み合わせた電機子コイルの電流分流特性
高島 敦史, 宮崎 寛史, 川越 明史, 三浦 峻, 吉田 幸市, 佐藤 誠樹, 佐々 滉太, 岩熊 成卓
第105回 低温工学・超電導学会研究発表会 2023.6
More details
Language：Japanese
Venue：タワーホール船堀 Country：Japan
-
Study of REBCO Trapezoidal Armature Windings for Superconducting Induction Motor International conference
Yuta Okade, Hiroshi Miyazaki, Hiromasa Sasa, Koichi Yoshida, Shun Miura, Teruyoshi Sasayama, Takashi Yoshida, Akifumi Kawagoe, Masataka Iwakuma
27th International Conference on Magnet Technology 2021.11
More details
Language：English
Venue：Fukuoka Convention Center Country：Japan
-
交流損失予測に基づく電磁界・熱連成解析による電動航空機用REBCO全超伝導同期機の設計
佐々 滉太, 三浦 峻, 宮﨑 寛史, 岩熊 成卓
第106回 低温工学・超電導学会研究発表会 2023.12
More details
Language：Japanese
Venue：海峡メッセ下関 Country：Japan
-
Electromagnetic design for high power density of fully superconducting synchronous motor with through-shaft type field coil for electric aircraft International conference
Kaiji Uriu, Masataka Iwakuma, Hiroshi Miyazaki, Shun Miura, Hiromasa Sasa
International Symposium on Superconductivity 2023 2023.11
More details
Language：English
Venue：Wellington
-
Influence of magnetic shields on current distributions among REBCO parallel conductors in single-phase armature windings International conference
Shun Miura, Yohei Masuda, Kazuki Nakamura, Goki Kawasaki, Hiroshi Miyazaki, Akifumi Kawagoe, Hiromasa Sasa, Koichi Yoshida, Seiki Sato, Masataka Iwakuma
International Symposium on Superconductivity 2023 2023.11
More details
Language：English
Venue：Wellington
-
Estimation Method of AC Loss of REBCO Superconducting Tapes in AC+DC Field for Field Windings in Fully Superconducting Synchronous Machine for Electric Aircraft International conference
Hiromasa Sasa, Koudai Jingami, Ryoma Oishi, Shun Miura, Hiroshi Miyazaki, Masataka Iwakuma
International Symposium on Superconductivity 2023 2023.11
More details
Language：English
Venue：Wellington
-
Development of Fully Superconducting Propulsion System for Aircraft with REBCO Tapes Invited International conference
Masataka Iwakuma, Hiroshi Miyazaki, Shun Miura, Hiromasa Sasa, Seiki Sato, Koichi Yoshida, Yoshiaki Suzuki, Isamu Sagara, Yoshiji Hase, Masayuki Konno, Mitsuo Ohaku, Chinatsu Ikeda, Hirokazu Honda, Yuichiro Sasamori, Teruo Izumi, Takato Machi, Hishiro Hirose, Sergey Lee, Shinya Hasuo, Miyuki Nakamura, Hirokazu Hirai, Nobuhiro Midoh, Kazuhisa Adachi, Yuji Aoki, Kei Shiohara, Hidetoshi Kasahara
International Symposium on Superconductivity 2023 2023.11
More details
Language：English
Venue：Wellington
-
Effectiveness of REBCO Trapezoidal Armature Coils Used in Superconducting Induction Motors International conference
M. Tsumori, R. Yamasaki, Y. Okade, H. Miyazaki, S. Miura, H. Sasa, K. Yoshida, M. Iwakuma
International Conference on Magnet Technology 28 2023.9
More details
Language：English
Venue：Aix-en-Provence Country：France
-
Electromagnetic design of a REBCO four-pole full-pitched armature coil composed of trapezoidal windings for fully superconducting synchronous motors International conference
Y. Emori, H. Miyazaki, S. Miura, H. Sasa, M. Iwakuma
International Conference on Magnet Technology 28 2023.9
More details
Language：English
Venue：Aix-en-Provence Country：France
-
Evaluation of the AC loss characteristics of multifilamentary REBCO tapes by the mechanical scratching of MgO2 areas International conference
R. Oishi, K. Jingami, H. Miyazaki, M. Iwakuma, K. Yoshida, S. Miura, H. Sasa, M. Daibo, S. Fujita
International Conference on Magnet Technology 28 2023.9
More details
Language：English
Venue：Aix-en-Provence Country：France
-
Current Distribution in Armature Coils Comprising Two Sizes of Racetrack Double-Pancakes with REBCO Striated Tapes International conference
A. Takashima, H. Miyazaki, S. Miura, K. Yoshida, S. Sato, H. Sasa, M. Iwakuma
International Conference on Magnet Technology 28 2023.9
More details
Language：English
Venue：Aix-en-Provence Country：France
-
Current Distribution among Three-Parallel REBa2Cu3Oy wires in Three-phase Armature Coils International conference
Shun Miura, Asato Kobun, Yohei Masuda, Kazuki Nakamura, Hiroshi Miyazaki, Akifumi Kawagoe, Hiromasa Sasa, Koichi Yoshida, Seiki Sato, Masataka Iwakuma
International Conference on Magnet Technology 28 2023.9
More details
Language：English
Venue：Aix-en-Provence Country：France
-
Current Distribution among Transposed Eight-bundle REBCO Wires in Armature Coils International conference
Shun Miura, Asato Kobun, Yohei Masuda, Kazuki Nakamura, Hiroshi Miyazaki, Akifumi Kawagoe, Hiromasa Sasa, Koichi Yoshida, Seiki Sato, Masataka Iwakuma
16th European Conference on Applied Superconductivity 2023.9
More details
Language：English
Venue：Bologna Country：Italy
-
電機子コイルにおけるREBa2Cu3Oy並列導体の素線間電流分流の簡易解析手法
三浦 峻, 公文 麻人, 増田 陽平, 中村 一稀, 宮﨑 寛史, 川越 明史,吉田 幸市, 佐藤 誠樹, 佐々 滉太, 岩熊 成卓
第105回 低温工学・超電導学会研究発表会 2023.6
More details
Language：Japanese
Venue：タワーホール船堀 Country：Japan
-
AC Loss Property of Horizontal Array of Isolated REBCO Superconducting Tapes International conference
Hiromasa Sasa, Ryoma Oishi, Yuuki Himeno, Yuji Nishida, Koudai Jingami, Shun Miura, Hiroshi Miyazaki, Masataka Iwakuma
Applied Superconductivity Conference 2024 2024.9
More details
Venue：Salt Lake City Country：United States
-
Testing of 400 kW-class REBCO superconducting synchronous machine under low temperature and pressure environments International conference
Hiroshi Miyazaki, Masataka Iwakuma, Koichi Yoshida, Hiromasa Sasa, Shun Miura, Seiki Sato, Isamu Sagara, Yoshiaki Suzuki, Masayuki Konno, Hirokazu Hirai, Teruo Izumi
Applied Superconductivity Conference 2024 2024.9
More details
Venue：Salt Lake City Country：United States
-
Measurement of the current distributions in parallel conductors composed of several high-temperature superconducting tapes exposed of perpendicular magnetic fields to their tape faces International conference
Akifumi Kawagoe, Masataka Yoshida, Soichiro Ando, Shun Miura, Hiroshi Miyazaki, Masataka Iwakuma
Applied Superconductivity Conference 2024 2024.9
More details
Venue：Salt Lake City Country：United States
-
Coil-level transposition technique for three-phase armature coils with REBa2Cu3Oy parallel tapes in superconducting rotating machines International conference
Shun Miura, Yohei Masuda, Yudai Kimura, Goki Kawasaki, Hiroshi Miyazaki, Akifumi Kawagoe, Hiromasa Sasa, Masataka Iwakuma
Applied Superconductivity Conference 2024 2024.9
More details
Venue：Salt Lake City Country：United States
-
AC Loss characteristics of double pancake coils wound with horizontally parallel REBCO tape International conference
Ryoma Oishi, Koudai Jingami, Yuji Nishida, Yuuki Himeno, Ryota Kashiwagi, Hiromasa Sasa, Koichi Yoshida, Hiroshi Miyazaki, Masataka Iwakuma, Hishiro Hirose, Takato Machi, Teruo Izumi, Miyuki Nakamura
Applied Superconductivity Conference 2024 2024.9
More details
Venue：Salt Lake City Country：United States
-
A Persistent Current Switch Using REBCO Tapes without Copper Plating for a Superconducting Synchronous Motor International conference
Takato Kuniyasu, Motohiro Asada, Kazuki Tomita, Koichi Yoshida, Hiroshi Miyazaki, Shun Miura, Hiromasa Sasa, Masataka Iwakuma
Applied Superconductivity Conference 2024 2024.9
More details
Venue：Salt Lake City Country：United States
-
交流損失予測に基づく電磁界・熱連成解析による電動航空機用REBCO全超伝導同期機の設計
佐々 滉太, 三浦 峻, 宮﨑 寛史, 岩熊 成卓
第106回 低温工学・超電導学会研究発表会 2023.12
-
Electromagnetic design for high power density of fully superconducting synchronous motor with through-shaft type field coil for electric aircraft International conference
Kaiji Uriu, Masataka Iwakuma, Hiroshi Miyazaki, Shun Miura, Hiromasa Sasa
International Symposium on Superconductivity 2023 2023.11
More details
Venue：Wellington Country：New Zealand
-
Influence of magnetic shields on current distributions among REBCO parallel conductors in single-phase armature windings International conference
Shun Miura, Yohei Masuda, Kazuki Nakamura, Goki Kawasaki, Hiroshi Miyazaki, Akifumi Kawagoe, Hiromasa Sasa, Koichi Yoshida, Seiki Sato, Masataka Iwakuma
International Symposium on Superconductivity 2023 2023.11
More details
Venue：Wellington Country：New Zealand
-
Estimation Method of AC Loss of REBCO Superconducting Tapes in AC+DC Field for Field Windings in Fully Superconducting Synchronous Machine for Electric Aircraft International conference
Hiromasa Sasa, Koudai Jingami, Ryoma Oishi, Shun Miura, Hiroshi Miyazaki, Masataka Iwakuma
International Symposium on Superconductivity 2023 2023.11
More details
Venue：Wellington Country：New Zealand
-
Development of Fully Superconducting Propulsion System for Aircraft with REBCO Tapes Invited International conference
Masataka Iwakuma, Hiroshi Miyazaki, Shun Miura, Hiromasa Sasa, Seiki Sato, Koichi Yoshida, Yoshiaki Suzuki, Isamu Sagara, Yoshiji Hase, Masayuki Konno, Mitsuo Ohaku, Chinatsu Ikeda, Hirokazu Honda, Yuichiro Sasamori
International Symposium on Superconductivity 2023 2023.11
More details
Venue：Wellington Country：New Zealand
-
Evaluation of the induced current in the REBCO rotor with air core in the induction motor International conference
Akifumi Kawagoe, Ryunosuke Torii, Shinpei Nakagawa, Shun Miura, Hiroshi Miyazaki, Masataka Iwakuma
28th International Conference on Magnet Technology 2023.9
More details
Venue：Aix-en-Provence Country：France
-
The effect of external magnetic fields oriented to perpendicular to the flat face of REBCO tapes composing the parallel conductor on current distributions between each tape International conference
Akifumi Kawagoe, Masaki Oshikawa, Ryunosuke Torii, Masataka Yoshida, Shun Miura, Hiroshi Miyazaki, Masataka Iwakuma
16th European Conference on Applied Superconductivity 2023.9
More details
Venue：Bologna Country：Italy
-
Fabrication and Test of a 400kW-class Fully Superconducting Synchronous Motor Using REBCO Tape for Electric Propulsion System Invited International conference
H. Miyazaki, M. Iwakuma, Y. Emori, H. Sasa, K. Yoshida, S. Sato, S. Miura, I. Sagara, Y. Suzuki, M. Konno, H. Hirai, T. Izumi
28th International Conference on Magnet Technology 2023.9
More details
Venue：Aix-en-Provence Country：France
-
Current Distribution among Three-Parallel REBa2Cu3Oy wires in Three-phase Armature Coils International conference
Shun Miura, Asato Kobun, Yohei Masuda, Kazuki Nakamura, Hiroshi Miyazaki, Akifumi Kawagoe, Hiromasa Sasa, Koichi Yoshida, Seiki Sato, Masataka Iwakuma
28th International Conference on Magnet Technology 2023.9
More details
Venue：Aix-en-Provence Country：France
-
Progress in the development of high-efficiency electric propulsion systems Invited International conference
Masataka Iwakuma, Hiroshi Miyazaki, Shun Miura, Hiromasa Sasa, Seiki Sato, Koichi Yoshida, Yoshiaki Suzuki, Isam Sagara, Yoshiji Hase, Masayuki Konno, Mitsuo Ohaku, Chinatsu Ikeda, Hirokazu Honda, Yuichiro Sasamori, Teruo Izumi, Takato Machi, Hishiro Hirose, Sergey Lee, Shinya Hasuo, Miyuki Nakamura, Hirokazu Hirai, Nobuhiro Midoh, Kazuhisa Adachi, Yuji Aoki, Kei Shiohara, Hidetoshi Kasahara
16th European Conference on Applied Superconductivity 2023.9
More details
Venue：Bologna Country：Italy
-
Current Distribution among Transposed Eight-bundle REBCO Wires in Armature Coils International conference
Shun Miura, Asato Kobun, Yohei Masuda, Kazuki Nakamura, Hiroshi Miyazaki, Akifumi Kawagoe, Hiromasa Sasa, Koichi Yoshida, Seiki Sato, Masataka Iwakuma
16th European Conference on Applied Superconductivity 2023.9
More details
Venue：Bologna Country：Italy
-
Effectiveness of REBCO Trapezoidal Armature Coils Used in Superconducting Induction Motors International conference
M. Tsumori, R. Yamasaki, Y. Okade, H. Miyazaki, S. Miura, H. Sasa, K. Yoshida, M. Iwakuma
28th International Conference on Magnet Technology 2023.9
More details
Venue：Aix-en-Provence Country：France
-
Current Distribution in Armature Coils Comprising Two Sizes of Racetrack Double-Pancakes with REBCO Striated Tapes International conference
A. Takashima, H. Miyazaki, S. Miura, K. Yoshida, S. Sato, H. Sasa, M. Iwakuma
28th International Conference on Magnet Technology 2023.9
More details
Venue：Aix-en-Provence Country：France
-
Evaluation of the AC loss characteristics of multifilamentary REBCO tapes by the mechanical scratching of MgO2 areas International conference
R. Oishi, K. Jingami, H. Miyazaki, M. Iwakuma, K. Yoshida, S. Miura, H. Sasa, M. Daibo, S. Fujita
28th International Conference on Magnet Technology 2023.9
More details
Venue：Aix-en-Provence Country：France
-
Electromagnetic design of a REBCO four-pole full-pitched armature coil composed of trapezoidal windings for fully superconducting synchronous motors International conference
Y. Emori, H. Miyazaki, S. Miura, H. Sasa, M. Iwakuma
28th International Conference on Magnet Technology 2023.9
More details
Venue：Aix-en-Provence Country：France
-
並列導体を用いた 2 種類のレーストラックコイルで構成された電機子コイルの電流分流特性
片岡小春，高島敦史，宮崎寛史，川越明史，三浦 峻，吉田幸市，佐藤誠樹，佐々滉太，岩熊成卓
2023年度(第76回)電気・情報関係学会九州支部連合大会 2023.6
More details
Venue：崇城大学
-
10MVA-6.9/1.0kV 電動航空機用超伝導変圧器における三相短絡時の限流機能の解析
中野基貴，岩熊成卓，宮﨑寛史，三浦 峻，佐々滉太，尾形桐弥
2023年度(第76回)電気・情報関係学会九州支部連合大会 2023.6
More details
Venue：崇城大学
-
4 本並列導体を用いた REBCO 電機子コイルにおける三相通電時の電流分流率の実験的評価
増田陽平，中村一稀，三浦 峻，宮崎寛史，川越明史，吉田幸市，佐藤誠樹，佐々滉太，岩熊成卓
2023年度(第76回)電気・情報関係学会九州支部連合大会 2023.6
More details
Venue：崇城大学
MISC
MISC
-
超伝導応用機器・電磁現象の研究
三浦 峻、佐々 滉太、宮﨑 寛史、岩熊 成卓
低温工学 九州・西日本支部レポート 2024.5
More details
Language：Japanese Publishing type：Internal/External technical report, pre-print, etc.
-
超伝導応用機器・電磁現象の研究開発
三浦峻、宮﨑寛史、岩熊成卓
2023.5
More details
Language：Japanese Publishing type：Internal/External technical report, pre-print, etc.
-
軽量・コンパクトの超伝導回転機の開発
三浦峻，岩熊成卓
低温工学・超電導学会 九州支部レポート 2020.4
More details
Language：Japanese Publishing type：Internal/External technical report, pre-print, etc.
-
超伝導機器応用へ向けて Reviewed
三浦峻，岩熊成卓
低温工学・超電導学会 九州支部レポート 2019.4
More details
Language：Japanese Publishing type：Internal/External technical report, pre-print, etc.
-
2本並列導体におけるREBa2Cu3Oy超伝導テープ線材の付加的交流損失
三浦 峻、岩熊 成卓、沖 総一郎、古川 琢馬
超伝導システム科学研究センター報告書 2017.4
More details
Language：Japanese Publishing type：Internal/External technical report, pre-print, etc.
Professional Memberships
Professional Memberships
-
低温工学・超電導学会
-
電気学会
Academic Activities
Academic Activities
-
Session Chair (3LOr1D: Transformers and Fault Current Limiters II), The Applied Superconductivity Conference 2024
Role(s)： Panel moderator, session chair, etc.
2024.9
More details
Type：Academic society, research group, etc.
-
Session Chair (3LOr2C: Flux pumps II), The Applied Superconductivity Conference 2024
Role(s)： Panel moderator, session chair, etc.
2024.9
More details
Type：Academic society, research group, etc.
-
Session Chair (3LPo1A: Measurement Techniques), The Applied Superconductivity Conference 2024
Role(s)： Panel moderator, session chair, etc.
2024.9
More details
Type：Academic society, research group, etc.
-
Session Chair International contribution
36th International Symposium on Superconductivity （ Wellington NewZealand ） 2023.11
More details
Type：Competition, symposium, etc.
-
Session Chair International contribution
28th Magnet Technology Conference （ Aix en Provence France ） 2023.9
More details
Type：Competition, symposium, etc.
-
Screening of academic papers
Role(s)： Peer review
2023
More details
Type：Peer review
Number of peer-reviewed articles in foreign language journals：7
-
座長
2022年秋季 低温工学・超電導学会研究発表会 （ Japan ） 2022.12
More details
Type：Competition, symposium, etc.
-
Screening of academic papers
Role(s)： Peer review
2022
More details
Type：Peer review
Number of peer-reviewed articles in foreign language journals：5
-
座長
2021年春季低温工学・超電導学会 （ Japan ） 2021.5
More details
Type：Competition, symposium, etc.
-
Screening of academic papers
Role(s)： Peer review
2020
More details
Type：Peer review
Number of peer-reviewed articles in foreign language journals：2
-
Screening of academic papers
Role(s)： Peer review
2019
More details
Type：Peer review
Number of peer-reviewed articles in foreign language journals：3
-
座長
第96回2018年度春季低温工学・超電導学会 （ Japan ） 2018.5
More details
Type：Competition, symposium, etc.
-
実行委員
平成30年電気学会全国大会 （ Japan ） 2018.3
More details
Type：Competition, symposium, etc.
-
Screening of academic papers
Role(s)： Peer review
2018
More details
Type：Peer review
Number of peer-reviewed articles in foreign language journals：1
-
座長
平成29年度（第70回）電気 ・情報関係学会九州支部連合大会 （ Japan ） 2017.9
More details
Type：Competition, symposium, etc.
-
Screening of academic papers
Role(s)： Peer review
2017
More details
Type：Peer review
Number of peer-reviewed articles in foreign language journals：3
Number of peer-reviewed articles in Japanese journals：0
Proceedings of International Conference Number of peer-reviewed papers：0
Proceedings of domestic conference Number of peer-reviewed papers：0
Research Projects
Research Projects
-
超伝導回転機の大電流容量化を実現する転位巻き線技術
Grant number：24K07433 2024 - 2026
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
More details
Authorship：Principal investigator Grant type：Scientific research funding
-
Kyushu University World-leading Researchers Training Program (QUEST))
2024
高等研究院 令和5年度国際的研究リーダー研修プログラム
More details
Authorship：Principal investigator Grant type：On-campus funds, funds, etc.
-
空飛ぶクルマ用高出力密度超伝導誘導モータの研究開発
2023.4 - 2027.3
More details
Authorship：Collaborating Investigator(s) (not designated on Grant-in-Aid)
-
電気推進飛行体向け超伝導バルク磁石型全超伝導同期モーターの磁化減衰抑制技術
Grant number：21K14144 2021 - 2022
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Early-Career Scientists
More details
Authorship：Principal investigator Grant type：Scientific research funding
-
洋上風力発電へ向けた全超伝導同期発電機の設計検討
2020 - 2021
2020年度 永守財団 研究助成
More details
Authorship：Principal investigator Grant type：Contract research
-
NEDO「航空機用先進システム実用化プロジェクト/次世代電動推進システム研究開発/高効率かつ高出力電動推進システム」
2019.9
-
大容量の液体水素移送ポンプ向け全超伝導電動機の開発 ～小型試作機による動作実証～
Grant number：19K14964 2019 - 2020
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Early-Career Scientists
More details
Authorship：Principal investigator Grant type：Scientific research funding
-
風力発電へ向けた小型軽量かつ大容量の全超伝導同期発電機の電磁設計
2019 - 2020
永守財団 研究助成2019
More details
Authorship：Principal investigator Grant type：Contract research
-
NEDO 先導研究プログラム／エネルギー・環境新技術先導プログラム／革新的航空機用電気推進システムの研究開発
2018.6 - 2019.5
NEDO
More details
空機分野におけるCO2のみならずNOxやPMなども含めた低エミッション、更には低騒音を実現するために、航空機の電気推進化を目指す。本研究では、今後導入数が最も見込まれる１通路100～200人乗り航空機の電気推進システムを開発対象とする。発電機、ケーブル、モータ等の連係推進システム全体に超電導技術を導入することにより、現行のジェットエンジンシステムと比較して高出力密度の推進システムの実現を目指す。これまで電力応用や医療機器応用を対象に開発してきた超電導関連技術（超電導線材、ケーブル、回転機、及び冷凍技術等）を基礎に、各コンポーネントを航空機仕様とするための革新的な概念を取り入れた設計を行い、期待できるメリット(出力密度等)を定量的に試算する。また、同概念を具現化するために必要な要素技術を選択し、部分要素モデルの試作と評価を行う。これにより世界に先駆けて、航空機に対応した小型・軽量・高効率の大出力電気推進システムの実現可能性を検証する。
-
基盤研究(A), 航空機用電気推進システムの開発
2018.4 - 2022.3
-
風力発電へ向けた小型軽量かつ大容量の全超伝導同期発電機の電磁設計
2018 - 2019
公益財団法人永守財団 研究助成2018
More details
Authorship：Principal investigator Grant type：Contract research
-
高温超伝導線材の高性能化とその応用機器の開発
2018
中村治四郎育英会 中村奨励金
More details
Authorship：Principal investigator Grant type：Contract research
-
液体水素移送ポンプ向け超伝導電動機の概念設計と電磁解析
2018
エネルギー研究教育機構 若手研究者・博士課程学生支援プログラム
More details
Authorship：Principal investigator Grant type：On-campus funds, funds, etc.
-
超伝導回転機へ向けた高温超伝導線材の交流損失の推定手法および低減技術の確立
Grant number：17H06931 2017 - 2018
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Research Activity start-up
More details
Authorship：Principal investigator Grant type：Scientific research funding
-
希土類系高温超伝導テープ線材における交流損失推定手法の構築
2017
ＱＲプログラム (Qdai-jump Research Program)
More details
Authorship：Principal investigator Grant type：On-campus funds, funds, etc.
-
超伝導電磁現象および超伝導応用に関する研究
2017
ｼｽﾃﾑ情報科学研究院・ｽﾀｰﾄｱｯﾌﾟ支援
More details
Authorship：Principal investigator Grant type：On-campus funds, funds, etc.
-
ナノ構造制御による高温超伝導薄膜線材の超伝導特性向上及び磁束ピンニング機構解明に関する研究
Grant number：16J02416 2016
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows
More details
Authorship：Principal investigator Grant type：Scientific research funding
-
Strongly enhanced critical current density below liquid nitrogen temperature on BaHfO3-doped SmBa2Cu3Oy superconducting films fabricated at very low growth temperature
2015
公益財団法人 村田学術振興財団 研究者海外派遣援助
More details
Authorship：Principal investigator Grant type：Contract research
-
JST ALCA 「REBCO超伝導線材を用いた全超伝導回転機の開発」
2014.10 - 2021.9
-
Flux pinning performance at low temperature in SmBa2Cu3Oy films with high number density of BaHfO3 nano-rods fabricated by LTG technique
2014
公益財団法人 立松財団 海外調査研究助成
More details
Authorship：Principal investigator Grant type：Contract research
-
Flux pinning properties of SmBa2Cu3Oy films including high number density of BaHfO3 nano-rods on LaAlO3 substrate
2014
公益財団法人 中部電気利用基礎研究振興財団 国際交流援助
More details
Authorship：Principal investigator Grant type：Contract research
-
量子化磁束のダイナミックスと物質科学への展開 , 基盤研究(S)
2011.6 - 2016.3
-
原子レベル制御による120 K級超伝導線材の開発 , 先端的低炭素化技術開発事業（ALCA） , JST
2011.3 - 2016.3
Educational Activities
Educational Activities
-
学部4年生、修士および博士課程の学生に対し、実験、解析、卒業論文、修士・博士論文および英語論文の研究指導を行っている。それ以外に学部3年生向けの実験演習のレポートおよび実験指導を行っている．
まず指導する学生に対して研究の面白さを示し、強く興味を持ってもらうことが研究指導において最も重要だと考えている。さらに数学、物理、及び電気電子工学に対する幅広い基礎知識、そして創造的な課題探索と問題解決能力を身につけることが必要と考えている。そのために、まず学生の「なぜ」という疑問を大切にしている。
助教として学生にとって良きメンターとなり、学生を自立した研究者・技術者に育てることを目標に教育を行っていきたい。すべての学生に対して一貫した指導教育ではなく、個々に合った指導を行うよう心掛けている。特に昨今の学生は様々なタイプの学生がおり、時には精神的なケアも必要と感じている。
Class subject
Class subject
-
電気情報工学実験II（A, B)
2024.10 - 2025.3 Second semester
-
電気情報工学実験I（A, B)
2024.4 - 2024.9 First semester
-
電気情報工学実験II（A, B)
2023.10 - 2024.3 Second semester
-
電気情報工学基礎実験
2023.4 - 2023.9 First semester
-
電気情報工学実験I（A, B)
2023.4 - 2023.9 First semester
-
電気情報工学実験II（A, B)
2022.10 - 2023.3 Second semester
-
電気情報工学基礎実験
2022.4 - 2022.9 First semester
-
電気情報工学実験I（A, B)
2022.4 - 2022.9 First semester
-
電気情報工学実験II（A, B)
2021.10 - 2022.3 Second semester
-
電気情報工学実験I（A, B)
2021.4 - 2021.9 First semester
-
電気情報工学実験II（A, B)
2020.10 - 2021.3 Second semester
-
電気情報工学実験I（A, B)
2020.4 - 2020.9 First semester
-
電気情報工学実験II（A, B)
2019.10 - 2020.3 Second semester
-
電気情報工学実験Ⅰ（A，B）
2019.4 - 2019.9 First semester
-
電気情報工学実験II（A,B)
2018.10 - 2019.3 Second semester
-
電気情報工学実験I（A, B)
2018.4 - 2018.9 First semester
FD Participation
FD Participation
-
2025.3 Role：Participation Title：第10回全学ＦＤ ＩＤＥ大学セミナー「被災地支援と大学教育」
Organizer：University-wide
-
2024.7 Role：Participation Title：【シス情FD】ソーシャルロボットにおけるELSI実証研究と標準化
Organizer：[Undergraduate school/graduate school/graduate faculty]
-
2023.4 Role：Speech Title：【シス情FD】若手教員による研究紹介⑧
Organizer：[Undergraduate school/graduate school/graduate faculty]
-
2022.11 Role：Participation Title：【工学・シス情】教職員向け知的財産セミナー（ＦＤ）
Organizer：[Undergraduate school/graduate school/graduate faculty]
-
2022.5 Role：Participation Title：【シス情FD】若手教員による研究紹介④「量子コンピュータ・システム・アーキテクチャの研究～道具になることを目指して～」
Organizer：[Undergraduate school/graduate school/graduate faculty]
-
2020.5 Role：Participation Title：オンサイト授業 vs. オンライン授業：分かったこと，変わったこと
-
2020.4 Role：Participation Title：Moodleを利用したe-Learning実例報告（九州大学電気情報において）
Organizer：[Undergraduate school/graduate school/graduate faculty]
-
2019.6 Role：Participation Title：8大学情報系研究科長会議の報告
Organizer：[Undergraduate school/graduate school/graduate faculty]
-
2018.9 Role：Participation Title：～教育の効率化について～
Organizer：[Undergraduate school/graduate school/graduate faculty]
Visiting, concurrent, or part-time lecturers at other universities, institutions, etc.
Visiting, concurrent, or part-time lecturers at other universities, institutions, etc.
-
2018 名古屋大学大学院工学研究科電気工学専攻吉田研究室 Domestic/International Classification:Japan
Semester, Day Time or Duration：2018年7月11日
-
2018 岐阜大学工学部、第５回応用物理学セミナー Domestic/International Classification:Japan
Semester, Day Time or Duration：https://www1.gifu-u.ac.jp/~collog/
Participation in international educational events, etc.
Participation in international educational events, etc.
-
2017.10
九州大学
Singapore Student Overseat Trip to Kyushu University that offer Undergraduate Programs in English、ゼミ形式で超伝導工学に関する講演を行い、また研究室見学会を行った。
More details
Venue：日本・九州大学
Outline of Social Contribution and International Cooperation activities
Outline of Social Contribution and International Cooperation activities
-
日時：2017年10月3日
場所: 九州大学
シンガポールのRepublic Polytechnic (School of Engineering)の学生28名に対し、超伝導に関する講義を行った。また超伝導システム科学研究センターの見学および体験実験を行った。
Social Activities
Social Activities
-
2019年度のオープンキャンパスに参加し，研究室紹介および体験実験をおこなった．また模擬授業「航空機の電気推進化」における実験の実演をおこなった．
九州大学 2019.8
More details
Audience：General, Scientific, Company, Civic organization, Governmental agency
Type：Lecture
-
2018年度のオープンキャンパスに参加し、超伝導および低温技術について実験・説明を行った。
九州大学 九州大学 2018.8
More details
Audience：General, Scientific, Company, Civic organization, Governmental agency
Type：Other
-
九州大学伊都キャンパスのオープンキャンパスにて、超伝導システム科学研究センターを公開
九州大学 九州大学伊都キャンパス 2017.8
More details
Audience：General, Scientific, Company, Civic organization, Governmental agency
Type：Other
Media Coverage
Media Coverage
-
【九州大、電動飛行機に超電導モーター 30年代に試験飛行】 https://www.nikkei.com/article/DGXZQOUC214CA0R20C23A9000000/ Newspaper, magazine
日本経済新聞 2023.10
More details
【九州大、電動飛行機に超電導モーター 30年代に試験飛行】 https://www.nikkei.com/article/DGXZQOUC214CA0R20C23A9000000/
-
【「超電導モーター」で世界に先駆ける…次世代航空機の競争力確保、経産省が開発支援】 https://newswitch.jp/p/39047
ニューススイッチ 日刊工業新聞 2023.10
More details
【「超電導モーター」で世界に先駆ける…次世代航空機の競争力確保、経産省が開発支援】 https://newswitch.jp/p/39047
-
【次世代航空機 競争力確保 超電導モーターで推進系 経産省】 Newspaper, magazine
日刊工業新聞 2023.10
More details
【次世代航空機 競争力確保 超電導モーターで推進系 経産省】
-
世界初！航空機向け超電導技術用いたモーター回転試験に成功】 https://www3.nhk.or.jp/fukuoka-news/20230725/5010021321.html
福岡NEWS WEB 2023.7
More details
世界初！航空機向け超電導技術用いたモーター回転試験に成功】 https://www3.nhk.or.jp/fukuoka-news/20230725/5010021321.html
-
【次世代電動航空機向け400kW級全超電導モータの回転試験に世界で初めて成功】https://www.kyushu-u.ac.jp/ja/notices/view/2475
九州大学ニュースリリース 2023.6
More details
【次世代電動航空機向け400kW級全超電導モータの回転試験に世界で初めて成功】https://www.kyushu-u.ac.jp/ja/notices/view/2475
-
【次世代電動航空機向け 400kW 級全超電導モータの回転試験に世界で初めて成功】
九州大学定例記者会見 2023.6
More details
【次世代電動航空機向け 400kW 級全超電導モータの回転試験に世界で初めて成功】
-
【九州大学など 次世代電動航空機向け全超電導モーター 回転試験に世界初成功】 Newspaper, magazine
電波新聞 2023.6
More details
【九州大学など 次世代電動航空機向け全超電導モーター 回転試験に世界初成功】
-
【空飛ぶクルマへの適用目指す 九大が次世代航空機向けモータの回転試験に世界初成功】https://www.zakzak.co.jp/article/20230611-S3CARWTCAVPFTI7GHA2QTOQT6E/ Newspaper, magazine
ZAKZAK（産業経済新聞） 2023.6
More details
【空飛ぶクルマへの適用目指す 九大が次世代航空機向けモータの回転試験に世界初成功】https://www.zakzak.co.jp/article/20230611-S3CARWTCAVPFTI7GHA2QTOQT6E/
-
【九州大学、次世代電動航空機向け400kW級全超電導モータの回転試験に世界初成功】https://www.drone.jp/news/2023060915420467765.html Newspaper, magazine
DRONE 2023.6
More details
【九州大学、次世代電動航空機向け400kW級全超電導モータの回転試験に世界初成功】https://www.drone.jp/news/2023060915420467765.html
-
https://www.nishinippon.co.jp/nnp/science/article/505800/ 九州大学が、先進電気推進飛行体研究センターを設置。 電気推進航空機、飛ぶ車の開発を開始。 Newspaper, magazine
西日本新聞 2019.4
More details
https://www.nishinippon.co.jp/nnp/science/article/505800/
九州大学が、先進電気推進飛行体研究センターを設置。
電気推進航空機、飛ぶ車の開発を開始。 -
九州大学が、先進電気推進飛行体研究センターを設置。 電気推進航空機、飛ぶ車の開発を開始。 TV or radio program
FNN Live News(TNC)、ロクいち（NHK） 、ニュース８４５（NHK） 2019.4
More details
九州大学が、先進電気推進飛行体研究センターを設置。
電気推進航空機、飛ぶ車の開発を開始。 -
2019年1月15日、経産省とBoeing社が電気推進航空機の研究開発の協定に調印。 電気推進航空機の電気推進システムは、九州大学、産総研のグループが開発する。 Newspaper, magazine
朝日新聞 2019.2
More details
2019年1月15日、経産省とBoeing社が電気推進航空機の研究開発の協定に調印。
電気推進航空機の電気推進システムは、九州大学、産総研のグループが開発する。 -
日本国政府経産省と、Boeing社が電気推進航空機の研究開発で協力することを協定し、調印した。電気推進システムの超伝導モータは九州大学が開発する。 Newspaper, magazine
日経電子版（国内、海外版） 2019.1
More details
日本国政府経産省と、Boeing社が電気推進航空機の研究開発で協力することを協定し、調印した。電気推進システムの超伝導モータは九州大学が開発する。
Activities contributing to policy formation, academic promotion, etc.
Activities contributing to policy formation, academic promotion, etc.
-
2021.4 - 2022.3 経済産業省 産業機械課 次世代空モビリティ政策室
経済産業省 産業機械課 次世代空モビリティ政策室にて係長および行政事務研修員として，空飛ぶクルマとドローンの技術開発に係る政策の立案，提言および運用の業務に従事
Travel Abroad
Travel Abroad
-
2024.5 - 2025.3
Staying countory name 1：New Zealand Staying institution name 1：Robinson Research Institute, Victoria University of Wellington