Kyushu University Academic Staff Educational and Research Activities Database
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Masahito Shoyama Last modified date:2017.06.26



Graduate School
Undergraduate School
Other Organization


E-Mail
Homepage
http://eesmain.ees.kyushu-u.ac.jp/~shoyama/
Phone
092-802-3713
Fax
092-802-3703
Academic Degree
Effects of Magnetizing Curent of the Transformer in the Push-Pull DC-DC Converter
Field of Specialization
Electronic circuit, Power electronics, Switching Power Supplies, EMC engineering
Outline Activities
Switching power converters are widely used in almost all electronic equipment, but they may cause serious problems by generating switching noise. In this laboratory, many good ideas have been proposed and analyzed to reduce the switching noise.

Research topics:
- Noise reduction of switching power supplies
- EMC (Electromagnetic Compatibility) in switching power supplies
- Weight and size reduction and high performance of switching power supplies
- Converter module with low voltage and high current
- Application of piezoelectric transformer to ultra flat switching converters
- Power factor correction converters for line harmonics reduction
- Application of EDLC (Eelectric double layer capacitor)
- Application of Solar cell battery
- Simulation technologies of electronic circuit simulator
Research
Research Interests
  • Digital Control of the Current Mode DC-DC Converter
    keyword : Fast responce, Figh-frequency DC-DC Converter
    2015.10~2017.04.
  • Giant Pulse Generator for Laser Ignition
    keyword : Laser Ignition, Current Mode Converter Type Driver
    2015.10~2017.03.
  • High Performance Switching Power Supplies by Digital Control
    keyword : Digital Control, Switching Power Supplies
    2014.04~2017.03.
  • Application of Wireless Electromagnetic Resonance Technology to Rotary Transformer Used in Ultrasonic Spindle
    keyword : Wireless electromagnetic resonance, Rotary transformer
    2014.04~2017.03.
  • Dynamic Characteristics and Controller Design of LLC Current Resonant Converters
    keyword : Noise reduction, Soft switching, High efficiency
    2014.04~2017.03.
  • Noise Recuction Techniques in Inverters for Motor Drives
    keyword : Inverter, Noise reduction
    2014.04~2017.03.
  • Noise Recuction Techniques in Bridge-less PFC Converters
    keyword : Bridge-less PFC Converter, Noise reduction
    2012.04~2017.03.
  • Bidirectional DC-DC Converters and Power Supply Systems Using Them
    keyword : Bidirectional DC-DC Converter
    2012.04~2017.03.
  • Research on Low-Noise Topologies in Power Electronics Circuits
    keyword : Low-Noise, Topology, Switching Power Supply, Power Electronics Circuits
    2011.04~2015.03.
  • Research on Circuit Topology of Boost Converter for Hybrid Vehicles
    keyword : Bidirectional converter, Boost converter, Hybrid Vehicle
    2009.09~2011.03.
  • Research on Low-Noise and Hih-Efficiency Power Factor Correction Converters
    keyword : PFC Coverter, Bridgeless PFC, Low-noise, High-efficiency
    2010.04~2014.03.
  • Research on contactless power feeding technology and its applications
    keyword : contactless power feeding, wireless power feeding, electromagnetic resonance, electromagnetic induction
    2010.04~2015.03.
  • Switching Power Supply with Transient Current Circuit
    keyword : switching power supply, soft switching, high-efficiency
    2009.04~2014.03.
  • Cutting Edge Technologies of Soft-Switching
    keyword : switching power supply, soft switching, high-efficiency
    2010.04~2013.03.
  • Power Supply System for MPU in the Next and Next Generation
    keyword : switching power supply, small-size, low-profile, high-efficiency
    2009.10~2010.09.
  • LLC current resonant converters for flat panel displays with small-size, low-profie, high-efficiency and good dynamic characteristics
    keyword : switching power supply, flat panel display, LLC current resonant converter, small-size, low-profile, high-efficiency
    2008.04~2014.03.
  • One-chip power supplies operating at ultra high frequency
    keyword : one-chip power supply, switching power supply
    2008.04~2010.03.
  • Power routing and noise reduction of DC power feeding system
    keyword : DC power feeding system, switching power supply, power routing, noise reduction
    2008.04~2013.03.
  • Software design tools for low-noise switching power supplies
    keyword : switching power supply, noise design, software tool
    2008.04~2011.03.
  • Resonant switched capacitor converter
    keyword : switched capacitor converter, resonant inductor, high efficiency
    2003.04~2007.03Switched capacitor converters, which are based on charge and discharge operation of capacitors, have been used to realize small size and light weight DC-DC converters in various kinds of electronic devices mainly with a light load. However, conventional switched capacitor converters have an inherent drawback that their efficiency is much decreased as the output current is increased. Because this inherent drawback is due to a periodical forced charging and discharging operation in the internal switched capacitors accompanied by a large capacitor current, their efficiency can not be increased by decreasing its internal resistance, e.g. conduction resistance of the switches. So, they are limited to use in a very small output current. We have presented a novel switched capacitor converter topology that uses a resonant operation instead of the forced charging and discharging operation. Its advantage over a conventional switched capacitor converter is a high efficiency even in a high output current region. Its operation analysis and steady-state characteristics habe been shown and confirmed by experiments. As a result, it has been obtained that the resonant switched capacitor converter maintains a high efficiency even in a high output current region..
  • Common mode noise reduction using balanced switching supplies
    keyword : balanced switching supply, common mode conducted noise, current cancellation
    2001.04~2007.03Because conventional switching converters are usually using unbalanced circuit topologies, parastic capacitance between the drain of an MOS-FET and the frame ground through its heat sink may generate the common-mode conducted noise. We have proposed a concept of balanced switching converter circuit, which is an effective way to reduce the comonn-mode cunducted noise of a switching converter by current cancellation. The path of the noise current in a balanced converter circuit has been investigated usung a current probe. By measuring current waveforms and frequency spectra of the parastic capacitances and the frame ground line, the mechanism of the common-mode noise reduction by current cancellation has been clarified..
  • Common mode noise reduction in common source type active clamped DC-DC converters
    keyword : DC-DC converter, active clamped circuit, common mode noise, near field radiated noise
    2001.04~2004.03We have pointed out that the common-source type active-clamp converter has a good feature of common-mode noise reduction and have shown its low noise characteristics. We have analyzed the noise reduction mechanism in the common-source type active-clamp converter in detail. By measuring the near-field magnetic radiated noise, we have examined the noise current path on the converter circuit board at some frequencies in problem. From this analysis we have derived a high-frequency equivalent circuit for conducted noise current..
Academic Activities
Books
1. Emad M. Ahmed, Masahito Shoyama, Maximum Power Point Tracking (MPPT) in photovoltaic (PV) Systems: Converter Topology, Tracking algorithms, Simulation and Experimental Results, (財)北九州国際技術協力会(KITA)主催 国際協力機構(JICA)研修, 「太陽光エネルギー発電技術コース」, 2012.03.
Papers
1. Mahmoud A. Gaafar, Gamal M. Dousoky, Emad M. Ahmed, M. Shoyama, Systematic Design of Grid-Current-Based Active Damping for Grid-Connected LCL Filters, IEEE APEC 2017, pp.2652-2657, 2017.03.
2. Gamal M. Dousoky, M. Shoyama, New Parameter for Current-Sensorless MPPT in Grid-Connected Photovoltaic VSIs, Solar Energy Journal (Elsevier), Vol.143, pp.113-119, 2017.02.
3. Mokhtar Aly, Emad M. Ahmed, M. Shoyama, Thermal Stresses Relief Carrier-Based PWM Strategy for Single Phase Multilevel Inverters, IEEE Transactions on Power Electronics, Vol.PP, No.99, pp.1-1, 2017.01.
4. Gamal M. Dousoky, M. Shoyama, An AC MPPT with Active/Reactive Power Control Feature for Single-Stage Three-Phase Grid-Connected Photovoltaic VSIs, Electric Power Components & Systems Journal (Taylor & Francis), Vol.45, No.4, pp.442-450, 2017.01.
5. Mokhtar Aly, Gamal M. Dousoky, M. Shoyama, An Overheating-Tolerant Space Vector Modulation Algorithm for Multilevel Inverters, IEEJ Transactions on Electrical and Electronic Engineering, Vol.11, No. 2, pp. 75-S83, 2016.12.
6. Mokhtar Aly, Emad M. Ahmed, M. Shoyama, Thermal and Reliability Assessment for Wind Energy Systems with DSTATCOM Functionality in Resilient Microgrids, IEEE Transactions on Sustainable Energy, Vol.PP, No.99, pp.1-1, 2016.12.
7. T. Ota, Jun Imaoka, M. Shoyama, H. Onishi, S. Nagaoka, S. Morishita, Analysis and Design Method of ZCS DC-DC Converter in Consideration of the Parasitic Capacitance of Switch and Its Effect on Loss Reduction, IEEE 2nd Southern Power Electronics Conference (SPEC), No.297, 2016.12.
8. Jun Imaoka, K. Okamoto, D. Ebisumoto, S. Kimura, M. Yamamoto, M. Shoyama, A Novel Design Method of Integrated Magnetic Components Used in Two-phase Interleaved Converter with Phase Drive Control, The 3rd Symposium on Semiconductor Power Conversion (S2PC), pp.52-53, 2016.10.
9. Donny Radianto,M. Shoyama, Improved Incremental Conductance Based Maximum Power Point Tracking of Photovoltaic System, International Journal on Energy Conversion (I.R.E.CON.), Vol.4, No.5, pp.139-143, 2016.09.
10. Mokhtar Aly, Gamal M. Dousoky, Emad M. Ahmed, M. Shoyama, A Unified SVM Algorithm for Lifetime Prolongation of Thermally-Overheated Power Devices in Multi-Level Inverters, IEEE ECCE 2016 (Energy Conversion Congress and Exposition), S24-1, pp.1-6, 2016.09.
11. Mahmoud A. Gaafar, M. Shoyama, Design and Analysis of Observer-Based Active Damping for LCL Filter Resonance, システム情報科学府紀要, Vol.21, No.2, pp.39-44, 2016.07.
12. Mahmoud A. Gaafar, Emad M. Ahmed, M. Shoyama, A Two State Feedback Active Damping Strategy for the LCL Filter Resonance in Grid-Connected Converters, Journal of Power Electronics (JPE), Vol.16, No.4, pp.1587-1597, 2016.07.
13. Baihua Zhang, Qiang Lin, Y. Shimada, Jun Imaoka, M. Shoyama, S. Tomioka, Analysis and Reduction Method of Conducted Noise in GaN HEMTs based Totem-pole Bridgeless PFC Converter, IEEE 8th IPEMC 2016-ECCE Asia, Mb1-07, 2016.05.
14. Mitsuru Sato, Reo Takiguchi, Jun Imaoka, M. Shoyama, A Novel Secondary PWM-Controlled interleaved LLC Resonant Converter for Load Current Sharing, IEEE 8th IPEMC 2016-ECCE Asia, P207, 2016.05.
15. Mahmoud A. Gaafar,Gamal M. Dousoky,M. Shoyama, New Active Damping Method for LCL Filter Resonance Based on Two Feedback System, IEEE APEC 2016, pp.2735-2741, 2016.03.
16. Donny Radianto,Gamal M. Dousoky,M. Shoyama, Design and Implementation of Fast PWM Boost Converter Based on Low Cost Microcontroller for Photovoltaic Systems, IEEE IECON 2015 (The 41st Annual Conference of the IEEE Industrial Electronics Society), pp.2325-2328, 2015.11.
17. Mokhtar Aly,Gamal M. Dousoky,M. Shoyama, Lifetime-Oriented SVPWM for Thermally-Overloaded Power Devices in Three-Level lnverters, IEEE IECON 2015 (The 42st Annual Conference of the IEEE Industrial Electronics Society), pp.3614-3619, 2015.11.
18. Mahmoud A. Gaafar,Gamal M. Dousoky,M. Shoyama, Dual Feedback Active Damping Method for Grid-Connected LCL Filter Resonance, IEEE IECON 2015 (The 43st Annual Conference of the IEEE Industrial Electronics Society), pp.3821-3826, 2015.11.
19. Mokhtar Aly,Gamal M. Dousoky,M. Shoyama, Reliability Enhancement of Multilevel Inverters through SVPWM-Based Thermal Management Methodology, IEEE IFEEC 2015 (2nd International Future Energy Electronics Conference), DC1, No.290469, 2015.11.
20. S. Ida,Gamal M. Dousoky,M. Shoyama,T. Yamashita, Performance Evaluation of Surge Energy Regenerative Two-Switch Power Supply with TEC values, IEEE IFEEC 2015 (2nd International Future Energy Electronics Conference), PE6, No.290182, 2015.11.
21. Donny Radianto,M. Shoyama, ANFIS Based Maximum Power Point Tracking Method for Photovoltaic System Using a Two-Phase Interleaved Boost Converter, International Review of Automatic Control (IREACO), Vol.8, No.6, pp.418-424, 2015.11.
22. Donny Radianto,Gamal M. Dousoky,M. Shoyama, MPPT Based on Incremental Conductance-Fuzzy Logic Algorithm for PhotovoItaic System under Variable Climate Conditions, IEEE INTELEC 2015 (37th International Telecommunications Energy Conference), TS31-1, pp.728-732, 2015.10.
23. Mokhtar Aly,Gamal M. Dousoky,M. Shoyama, Design and Validation of SVPWM Algorithm for Thermal Protection of T-Type Three-Level Inverters, IEEE INTELEC 2015 (37th International Telecommunications Energy Conference), PS08-39, pp.1074-1079, 2015.10.
24. Mahmoud A. Gaafar,Gamal M. Dousoky,M. Shoyama, Robustness Analysis for Observer Based Active Damping of LCL Filter at Different Resonant Frequencies, IEEE INTELEC 2015 (37th International Telecommunications Energy Conference), TS07-2, pp.173-178, 2015.10.
25. M. Sato,Gamal M. Dousoky,M. Shoyama, Improved Digital Control Scheme of Synchronous Rectification for Resonant Converter at Light Load Conditions, IEEE INTELEC 2015 (37th International Telecommunications Energy Conference), TS19-5, pp.457-461, 2015.10.
26. T. Takahashi,M. Miyamoto,Gamal M. Dousoky,M. Shoyama, Droop Control for Bi-Directional DC-DC Converters Used in Multi-Level Virtual Conductors, IEEE INTELEC 2015 (37th International Telecommunications Energy Conference), TS25-2, pp.600-605, 2015.10.
27. B. Zhang,K. Shi,Q. Lin,Gamal M. Dousoky,M. Shoyama,S. Tomioka, Conducted Noise Reduction of Totem-pole Bridgeless PFC Converter Using GaN HEMTs, IEEE INTELEC 2015 (37th International Telecommunications Energy Conference), TS13-2, pp.320-324, 2015.10.
28. Yuki Inoue, Yafei Gao, Masahito Shoyama, Hideaki Fujita, Application of Wireless Electromagnetic Resonance Technology to Rotary Transformer Used in Ultrasonic Spindle, 9th International Conference on Power Electronics (ICPE) - ECCE Asia, ThE2-1, 2015.06.
29. Hegazy Rezk Ahmed Hussien, Masahito Shoyama, Techno-economic Optimum Sizing of Stand-alone Photovoltaic/Fuel Cell Renewable System for Irrigation Water Pumping Applications, IEEE PECON 2014 (International Conference on Power & Energy), 3A-4, 2014.12.
30. Mokhtar Aly, Masahito Shoyama, An Efficient Neutral Point Voltage Control Algorithm with Reduced Switching Losses for Three Level Inverters, IEEE PECON 2014 (International Conference on Power & Energy), 4C-3, 2014.12.
31. Kewei Shi, Masahito Shoyama, Satoshi Tomioka, Common Mode Noise Reduction in Totem-pole Bridgeless PFC Converter, IEEE PEAC 2014 (International Power Electronics and Application Conference and Exposition ), pp.705-709, 2014.11.
32. Donny Radianto, Masahito Shoyama, Neural Network Based a Two Phase Interleaved Boost Converter for Photovoltaic System, ICRERA 2014 (3rd International Conference on Renewable Energy Research and Applications), No.148, 2014.10.
33. Mahmoud A. Gaafar, Masahito Shoyama, Active Damping for Grid-Connected LCL Filter based on Optimum Controller Design using Injected Grid Current Feedback Only, IEEE ECCE 2014 (Energy Conversion Congress and Exposition), pp.3628-3633, 2014.09.
34. Husam A. Ramadan, Masahito Shoyama, A Unified Model for the Multi-level Virtual Conductor, IEEE INTELEC 2014 (36th International Telecommunications Energy Conference), PO-27, 2014.09.
35. Mahmoud A. Gaafar, Masahito Shoyama, Active Damping for Grid-Connected LCL Filter Based on Optimum P+R Controller Design Using Injected Grid Current Feedback Only, IEEE INTELEC 2014 (36th International Telecommunications Energy Conference), PO-34, 2014.09.
36. Husam A. Ramadan, Yasutaka Imamura, Sihun Yang, Masahito Shoyama, Stability Considerations for DC Power Systems with Multi-level Virtual Conductors, システム情報科学府紀要, Vol.19, No.2, pp.41-46, 2014.09.
37. Husam A. Ramadan, Yasutaka Imamura, Sihun Yang, Masahito Shoyama, Performance of a Virtual Conductor in Dc Power Systems Using a Controlled Bidirectional DC-DC Converter, International Journal of Innovative Research in Electrical, Electronics, Instrumentation and Control Engineering, Vol. 2, Issue 9, pp.2002-2008, 2014.09.
38. Husam A. Ramadan, Yasutaka Imamura, Sihun Yang, Masahito Shoyama, A Unified Dynamic Model for Bi-directional DC-DC Converter, International Journal of Enhanced Research in Science Technology & Engineering, Vol.3, Issue 9, pp.228-238, 2014.09.
39. Donny Radianto, Masahito Shoyama, Anfis Based A Two-Phase Interleaved Boost Converter For Photovoltaic System, IEEE INTECH 2014 (4th International Conference on the Innovative Computing Technology), pp.19-24, 2014.08.
40. Husam A. Ramadan, Yasutaka Imamura, Sihun Yang, Masahito Shoyama, A New Stability Assessment Criterion for DC Power Systems Using Multi-level Virtual Conductors, IEEE COMPEL 2014 (15th IEEE Workshop on Control and Modeling for Power Electronics), pp.1-5, 2014.06.
41. Xiaochen Zhang, Masahito Shoyama, Common-Mode Noise Reduction with Two Symmetrical Three-Phase Inverters, IEICE 2014 International Symposium on Electromagnetic Compatibility, EMC’14/Tokyo, 13A1-A4, pp.61-64, 2014.05.
42. Kewei Shi, Masahito Shoyama, Satoshi Tomioka, A Study of Common Mode Noise Current of Bridgeless PFC Circuit Considering Voltage Change in Y-Capacitors, IEICE 2014 International Symposium on Electromagnetic Compatibility, EMC’14/Tokyo, 13A2-A3, pp.73-76, 2014.05.
43. Husam A. Ramadan, Yasutaka Imamura, Konosuke Kawachi, Sihun Yang, Masahito Shoyama, A Multi-Level Virtual Conductor as a Backbone of a DC Power Routing System, 2014 International Power Electronics Conference, IPEC-Hiroshima 2014 -ECCE Asia-, pp.863-867, 2014.05.
44. Haruomi Takashita, Masahito Shoyama, Yu Yonezawa, Yoshiyasu Nakashima, Efficiency Improvement of Power Supply with Transient Current Circuit Using Digital Control, 2014 International Power Electronics Conference, IPEC-Hiroshima 2014 -ECCE Asia-, pp.3386-3391, 2014.05.
45. Gamal M. Dousoky, Masahito Shoyama, Haitham Abu‐Rub, Dual-Mode Controller for MPPT in Single-Stage Grid-Connected Photovoltaic Inverters, IEEE IECON 2013 (The 39th Annual Conference of the IEEE Industrial Electronics Society), pp.663-668, 2013.11.
46. Gamal M. Dousoky, Masahito Shoyama, DSP-Based Simple and Efficient Synchronizer for Three-Phase Grid-Connected Renewable Energy Systems, IEEE IFEEC 2013 (1st International Future Energy Electronics Conference), pp.411-415, 2013.11.
47. Husam A. Ramadan, Yasutaka Imamura, Konosuke Kawachi, Sihun Yang, Masahito Shoyama, Multi-level Virtual Conductor Using Bidirectional DC-DC Converters, IEEE INTELEC 2013 (35th International Telecommunications Energy Conference), pp.2757-2763, 2013.10.
48. Gamal M. Dousoky, Masahito Shoyama, Current-Sensorless Power-Angle-Based MPPT for Single-Stage Grid-Connected Photovoltaic, IEEE ECCE 2013 (Energy Conversion Congress and Exposition), pp.105-109, 2013.09.
49. Emad M. Ahmed, Mohamed Orabi, Shoyama Masahito, High Efficient Variable step Size Incremental Resistance Maximum Power Point Tracker for PV, IEEE ECCE 2013 (Energy Conversion Congress and Exposition), pp.2435-2439, 2013.09.
50. Yasutaka Imamura, Husam A. Ramadan, Sihun Yang, Gamal M. Dousoky, Masahito Shoyama, Seamless Dynamic Model for DC-DC Converters Applicable to Bi-directional Power Transfer, EPE 2013 ECCE Europe (the 15th European Conference on Power Electronics and Applications), pp.1-10, 2013.09.
51. Yusuke Kawamura, Masahito Shoyama, Wireless Power Transmission Using LC Cancellation, 2013 IEEE ECCE ASIA DownUnder, June 2013, No. 10-3-2, pp. 1041-1045, 2013.06.
52. Seiya Abe, Toshiyuki Zaitsu, Junichi Yamamoto, Shinji Ueda, Sihun Yang, Masahito Shoyama, Tamotsu Ninomiya, Consideration of Current Resonant Converter Topology for Bi-Directional Applications, The 10th IEEE International Conference on Power Electronics and Drive Systems (PEDS 2013), A2L-A.2, pp.153-158, 2013.04.
53. Kiyoshi Masumoto, Kewei Shi, Masahito Shoyama, Satoshi Tomioka, Comparative Study on Efficiency and Switching Noise of Bridgeless PFC Circuits, The 10th IEEE International Conference on Power Electronics and Drive Systems (PEDS 2013), B3P-L.8, pp.613-618, 2013.04.
54. Yasutaka Imamura, Husam A. Ramadan, Sihun Yang, Gamal M. Dousoky, Masahito Shoyama, Seamless Dynamic Model for Bi-Directional DC-DC Converter, The 10th IEEE International Conference on Power Electronics and Drive Systems (PEDS 2013), B4L-F.3, pp.1109-1113, 2013.04.
55. Seiya Abe, Sihun Yang, Masahito Shoyama, Yoichi Ishizuka, Tamotsu Ninomiya, Masato Kaga, Prototype Evaluation of Over 10W/cm^3 High Power Density Converter for 400VDC Power Distribution System in Data Center, The 10th IEEE International Conference on Power Electronics and Drive Systems (PEDS 2013), C2L-A.3, pp.1280-1284, 2013.04.
56. Seiya Abe, Toshiyuki Zaitsu, Junichi Yamamoto, Shinji Ueda, Sihun Yang, Masahito Shoyama, Tamotsu Ninomiya, Adaptive Driving of Synchronous Rectifier for LLC Converter Without Signal Sensing, IEEE APEC 2013, pp.1370-1375, 2013.03.
57. Gamal M. Dousoky, Masahito Shoyama, Development of Eco-friendly Photovoltaic Energy Systems Through "Energy Efficiency" Technology - A Roadmap and an Application in Egypt and Japan, ICEST2013, pp.79-90, 2013.02.
58. Gamal M. Dousoky, Emad M. Ahmed, Masahito Shoyama, MPPT Schemes for Single-Stage Three-Phase Grid-Connected Photovoltaic Voltage-Source Inverters, ICIT 2012, pp.600-605, 2013.02.
59. Sihun Yang, Seiya Abe, Toshiyuki Zaitsu, Junichi Yamamoto, Masahito Shoyama, Tamotsu Ninomiya, Consideration of Operating Characteristics for Bi-directional LLC Resonant Converter, International Journal of Renewable Energy Research, Vol.2, No.4, pp.790-796, 2013.01.
60. Kiyoshi Masumoto, Masahito Shoyama, Comparative Study about Efficiency and Switching Noise of Bridgeless PFC Circuits, ICRERA 2012, 2012.11.
61. Sihun Yang, Seiya Abe, Toshiyuki Zaitsu, Junichi Yamamoto, Masahito Shoyama, Tamotsu Ninomiya, Detail Operating Characteristics of Bi-directional LLC Resonant Converter, ICRERA 2012, 2012.11.
62. Seiya Abe, Toshiyuki Zaitsu, Junichi Yamamoto, Sihun Yang, Masahito Shoyama, Tamotsu Ninomiya, AC Analysis of Symmetry and Asymmetry Bi-directional Current Resonant Converter, ICRERA 2012, 2012.11.
63. Sihun Yang, Kenta Goto, Yasutaka Imamura, Masahito Shoyama, Dynamic Characteristics Model of Bi-Directional DC-DC Converter Using State-Space Averaging Method, IEEE INTELEC 2012, Program #19.2, 2012.10.
64. Seiya Abe, Toshiyuki Zaitsu, Junichi Yamamoto, Shinji Ueda, Sihun Yang, Masahito Shoyama, Tamotsu Ninomiya, Operating Characteristics of Push-Pull Type Series Resonant DC-DC Converter with Synchronous Rectifier, IEEE INTELEC 2012, Program #1.4, 2012.10.
65. Seiya Abe, Toshiyuki Zaitsu, Junichi Yamamoto, Shinji Ueda, Sihun Yang, Masahito Shoyama, Tamotsu Ninomiya, Sensing-Less Drive of Synchronous Rectifier for LLC Resonant Converter, IEEE INTELEC 2012, Program #22.2, 2012.10.
66. Sihun Yang, Seiya Abe, Masahito Shoyama, Design consideration of Low-Profile LLC Resonant Converter for Reducing Temperature of The Transformer, システム情報科学府紀要, Vol.17, No.2, pp.49-54, 2012.09.
67. Gamal M. Dousoky, Emad M. Ahmed, Masahito Shoyama, Current-Sensorless MPPT with DC-DC Boost Converter for Photovoltaic Battery Chargers, IEEE ECCE 2012, pp.1607-1614, 2012.09.
68. Gamal M. Dousoky, Abou-Hashema M. El-Sayed, Masahito Shoyama, Increasing Energy-Efficiency in Solar Radiation Trackers for Photovoltaic Arrays, IEEE ECCE 2012, pp.4113-4120, 2012.09.
69. Seiya ABE, Sihun YANG, Masahito Shoyama, Tamotsu NINOMIYA, Akira MATSUMOTO, Akiyoshi FUKUI, Malfuntion Issue of SiC-SIT Based DC Circuit Breaker in 400V DC Power Distribution Systems for Data Centers, IEICE Trans. on Commun., Vol.E95-B, No.6, pp.1990-1996, 2012.06.
70. Gamal M. Dousoky, Emad M. Ahmed, Masahito Shoyama, An Adaptive Frequency Hopping Technique for Conducted-Noise Reduction in DC-DC Converters, IEEE 7th IPEMC 2012-ECCE Asia, pp.1761-1765, 2012.06.
71. Emad M. Ahmed, Gamal M. Dousoky, Masahito Shoyama, On the Behaviour of Marine and Tidal Current Converters with DC-DC Boost Converter, IEEE 7th IPEMC 2012-ECCE Asia, pp.2250-2254, 2012.06.
72. Emad M. Ahmed, Masahito Shoyama, Enhancing the Performance of the Marine and Tidal Current Converters Using DC-DC Boost Converter, Journal of Energy and Power Engineering, Vol. 6, No. 3, pp. 478-484, Mar. 2012, 2012.03.
73. Seiya Abe, Sihun Yang, Masahito Shoyama, Tamotsu Ninomiya, Akira Matsumoto, Akiyoshi Fukui, Operating Mechanism of SiC-SIT DC Circuit Breaker in 400V-DC Power Supply System for Data Center --In Case of Grounding Fault--, IEEE APEC 2012, pp.2189-2194, Feb. 2011, 2012.02.
74. Emad M. Ahmed, Masahito Shoyama, Scaling Factor Design Based Variable Step Size Incremental Resistance Maximum Power Point Tracking for PV Systems, Journal of Power Electronics (JPE), Vol.12, No.1, pp.164-171, 2012.01.
75. Emad M. Ahmed, Masahito Shoyama, Scaling Factor Design Issues in Variable Step Size Incremental Resistance MPPT in PV systems, 9th International Conference on Power Electronics and Drive Systems (PEDS 2011), Dec. 2011, pp.889-894, 2011.12.
76. Seiya Abe, Sihun Yang, Masahito Shoyama, Tamotsu Ninomiya, Akira Matsumoto, Akiyoshi Fukui, Malfunction Analysis of SiC-SIT DC Circuit Breaker in 400V-DC Power Supply System, 9th International Conference on Power Electronics and Drive Systems (PEDS 2011), Dec. 2011, pp.109-114, 2011.12.
77. Emad M. Ahmed, Masahito Shoyama, Novel Stability Analysis of Variable Step Size Incremental Resistance INR MPPT for PV systems, IEEE International Conf. on Industrial Electronics, Control and Instrumentation (IECON 2011), Nov. 2011, pp. 3761-3766, 2011.11.
78. Gamal M. Dousoky, Abou-Hashema M. El-Sayed, Masahito Shoyama, Improved Orientation Strategy for Energy-Efficiency in Photovoltaic Panels, Journal of Power Electronics (JPE), Vol.11, No.3, pp. 335-341, May 2011, 2011.05.
79. Emad M. Ahmed, Masahito Shoyama, New Single Current Sensor Based Variable Step Size MPPT for Stand-alone Battery Storage PV Systems, PCIM 2010 (in Nurnberg, Germany), pp.381-387, May 2011, 2011.05.
80. Emad M. Ahmed, Masahito Shoyama, Stability Study of Variable Step Size Incremental Conductance/Impedance MPPT for PV systems, 8th International Conference on Power Electronics (ICPE 2011) - ECCE Asia, May-Jun. 2011, TuB2-3, 2011.05.
81. Sihun Yang, Seiya Abe, Masahito Shoyama, Design Consideration of Two Flat Transformers in a Low-Profile LLC Resonant Converter, 8th International Conference on Power Electronics (ICPE 2011) - ECCE Asia, May-Jun. 2011, WeA2-3, 2011.05.
82. Gamal M. Dousoky, Abou-Hashema M. El-Sayed, Masahito Shoyama, Maximizing Energy-Efficiency in Single-Axis Solar Trackers for Photovoltaic Panels, 8th International Conference on Power Electronics (ICPE 2011) - ECCE Asia, May-Jun. 2011, ThF1-1, 2011.05.
83. Emad M. Ahmed, Masahito Shoyama, Variable Step Size Maximum Power Point Tracker Using a Single Variable for Stand-alone Battery Storage PV Systems, IEEE ICIT-SSST 2011 (in Auburn,Alabama, USA; Electronic Presentation), Mar. 2011, 2011.03.
84. Emad M. Ahmed, Masahito Shoyama, Variable Step Size Maximum Power Point Tracker Using Single Variable for Stand-alone Battery Storage PV Systems, Journal of Power Electronics (JPE), Vol.11, No.2, pp. 218-227, Mar. 2011, 2011.03.
85. Seiya Abe, Sihun Yang, Mariko Ogawa, Masahito Shoyama, Tamotsu Ninomiya, Akira Matsumoto, Akiyoshi Fukui, Malfunction Issue of SiC-SIT DC Circuit Breaker in HVDC Power Supply System, IEEE APEC 2011, D10.16, Mar. 2011, 2011.03.
86. Gamal M. Dousoky, Masahito Shoyama, Tamotsu Ninomiya, FPGA-Based Spread-Spectrum Schemes for Conducted-Noise Mitigation in DC-DC Power Converters: Design, Implementation,, Experimental Investigation, IEEE Transactions on Industrial Electronics, pp.429 - 435, Feb. 2011, 2011.02.
87. Seiya Abe, Mariko Ogawa, Toshiyuki Zaitsu, Satoshi Obata, Masahito Shoyama, Tamotsu Ninomiya, Investigation of Parameter Tolerance on Digitally Controlled DC-DC Converter with Pole-Zero-Cancellation Technique, IEEE APCCAS 2010, pp.476-479, Dec. 2010, 2010.12.
88. Sihun Yang, Seiya Abe, Masahito Shoyama, Design of Low-Profile LLC Resonant Converter for Low Transformer Loss, IEEE TENCON 2010, No.T1-18.4, pp.1301-1306, Nov. 2010, 2010.11.
89. Seiya Abe, Sihun Yang, Mariko Ogawa, Masahito Shoyama, Tamotsu Ninomiya, Akira Matsumoto, Akiyoshi Fukui, Mikio Yamasaki, Malfunction Suppression of Semiconductor Circuit Breaker in High Voltage DC Power Supply System, IEEE TENCON 2010, No.T1-17.3, pp.1278-1283, Nov. 2010, 2010.11.
90. Emad M. Ahmed, Masahito Shoyama, Modified Adaptive Variable Step-Size MPPT Based-on Single Current Sensor, IEEE TENCON 2010, No.T1-8.2, pp.1235-1240, Nov. 2010, 2010.11.
91. Seiya Abe, Mariko Ogawa, Toshiyuki Zaitsu, Satoshi Obata, Masahito Shoyama, Tamotsu Ninomiya, Dynamic Characteristics of Digitally Controled Conveter with Pole-Zero-Cancellation Techique, IEEE TENCON 2010, No.T1-2.3, pp.25-30, Nov. 2010, 2010.11.
92. Emad M. Ahmed, Masahito Shoyama, Highly Efficient Variable-Step-Size Maximum Power Point Tracker for PV Systems, IEEE ISEEE 2010, pp.112-117, Sep. 2010, 2010.09.
93. Seiya Abe, Kentaro Fukushima, Sihun Yang, Mariko Ogawa, Kosuke Nomura, Masahito Shoyama, Tamotsu Ninomiya, Akira Matsumoto, Akiyoshi Fukui, Mikio Yamasaki, Malfunction Mechanism of Semiconductor Circuit Breaker in HVDC Power Supply System, IEEE ECCE 2010, pp.3733-3738, Sep. 2010, 2010.09.
94. Gamal M. Dousoky, Masahito Shoyama, Tamotsu Ninomiya, On Factors Affecting EMI-Performance of Noise-Mitigating Digital Controllers in DC-DC Converters -- An Experimental Investigation, IEEE ECCE 2010, pp.1239-1245, Sep. 2010, 2010.09.
95. Sihun Yang, Seiya Abe, Masahito Shoyama, Parametric Analysis of LLC Resonant Converter Using Flat Transformer for Loss Reduction, EPE-PEMC 2010, pp.T2-(204-209), Sep. 2010, 2010.09.
96. Seiya Abe, Kentaro Fukushima, Sihun Yang, Mariko Ogawa, Kosuke Nomura, Masahito Shoyama, Tamotsu Ninomiya, Akira Matsumoto, Akiyoshi Fukui, Mikio Yamasaki, Consideration for the Malfunction of Semiconductor Circuit Breaker in High Voltage DC Power Supply System, EPE-PEMC 2010, pp.T6-(171-175), Sep. 2010, 2010.09.
97. Gamal M. Dousoky, Masahito Shoyama, Tamotsu Ninomiya, A Comparative Investigation of Several Frequency Modulation Profiles for Programmed Switching Controllers Targeted Conducted-Noise Reduction in DC-DC Converters, IEICE Trans. on Commun., Vol.E93-B, No.9, pp.2265-2272, Sep. 2010, 2010.09.
98. E. Firmansyah, S. Tomioka, S. Abe, M. Shoyama, T. Ninomiya, Totem-Pole Power-Factor-Correction Converter under Critical-Conduction-Mode Interleaved Operation, IEICE Trans. on Commun., Vol.E93-B, No.9, pp.2250-2256, Sep. 2010, 2010.09.
99. Sihun Yang, Seiya Abe, Masahito Shoyama, Operating Temperature Reduction of Low-Profile Transformer in LLC Resonant Converter for PDP, IEEE ISIE 2010, Vol.10, No.4, pp.963-968, Jul. 2010, 2010.07.
100. Gamal M. Dousoky, Masahito Shoyama, Tamotsu Ninomiya, A Double-Hybrid Spread-Spectrum Technique for EMI Mitigation in DC-DC Switching Regulators, Journal of Power Electronics (JPE), Vol.10, No.4, pp.342-350, Jul. 2010, 2010.07.
101. Seiya Abe, Kosuke Nomura, Kentaro Fukushima, Masahito Shoyama, Tamotsu Ninomiya, Akira Matsumoto, Akiyoshi Fukui, Mikio Yamasaki, Study on Malfunction Mechanism of Semiconductor Circuit Breaker in 400V DC Power Supply System, IPEC-Sapporo 2010, pp.2644-2649, Jun. 2010, 2010.06.
102. Gamal M. Dousoky, Masahito Shoyama, Consideration for Digital Controllers Targeted at Conducted-Noise Spectrum-Spreading in DC-DC Converters, IPEC-Sapporo 2010, pp.920-926, Jun. 2010, 2010.06.
103. Sihun Yang, Seiya Abe, Masahito Shoyama, Design Consideration of Flat Transformer in LLC Resonant Converter for Low Core Loss, IPEC-Sapporo 2010, pp.343-348, Jun. 2010, 2010.06.
104. Sihun Yang, Seiya Abe, Masahito Shoyama, Design Consideration of Reduction Flat Transformer Temperature in LLC Resonant Converter for Plasma Display, SPEEDAM 2010, pp.1141-1145, Jun. 2010, 2010.06.
105. Seiya Abe, Mariko Ogawa, Toshiyuki Zaitsu, Satoshi Obata, Masahito Shoyama, Tamotsu Ninomiya, Power-Stage Frequency Response Cancellation of DC-DC Converter with Digital Control, SPEEDAM 2010, pp.44-49, Jun. 2010, 2010.06.
106. Gamal M. Dousoky, Masahito Shoyama, Tamotsu Ninomiya, Conducted-Noise Characteristics of a Digitally-Controlled Randomly-Switched DC-DC Converter with an FPGA-Based Implementation, Journal of Power Electronics (JPE), Vol.10, No.3, pp.228-234, May. 2010, 2010.05.
107. Gamal M. Dousoky, Masahito Shoyama, FPGA-Based Digital Implementation of a Hybrid Spread-Spectrum Technique for EMI Mitigation in DC-DC Converters, PCIM 2010, pp.779-784, May. 2010, 2010.05.
108. K. Fukushima, I. Norigoe, M. Shoyama, T. Ninomiya, Y. Harada, K. Tsukakoshi, Input current-ripple reduction on Pulse-link DC-AC converter for fuel cell applications operated by zero-current-slope mode, IEEE ICIT 2010, pp.1201-1205, Mar. 2010, 2010.03.
109. S. Abe, M. Ogawa, T. Zaitsu, S. Obata, M. Shoyama, T. Ninomiya, Dynamic characteristics improvement of digital controlled DC-DC converter by means of PZC control, IEEE ICIT 2010, pp.750-755, Mar. 2010, 2010.03.
110. Gamal M. Dousoky, Masahito Shoyama, Tamotsu Ninomiya, Triple-Hybrid Switching Strategy for Conducted-Noise Level Reduction in DC-DC Converters, Research Reports on ISEE of Kyushu University, Vol.15, No.1, pp.25-30, Mar. 2010, 2010.03.
111. E. Firmansyah, S. Tomioka, S. Abe, M. Shoyama, T. Ninomiya, An Interleaved Totem-Pole Power Factor Correction Converter, Research Reports on ISEE of Kyushu University, Vol.15, No.1, pp.19-24, Mar. 2010, 2010.03.
112. Kentaro Fukushima, Isami Norigoe, Masahito Shoyama, Tamotsu Ninomiya, Yosuke Harada, Kenta Tsukakoshi, Analysis of Pulse-link DC-AC Converter for Fuel Cells Applications Operated in Zero-Current-Slope Mode, IEEE APEC 2010, pp.289-294, Feb. 2010, 2010.02.
113. E. Firmansyah, S. Abe, M. Shoyama, S. Tomioka, An Active-Clamped Full-Wave Zero-Current-Switched Quasi-Resonant Boost Converter in Power Factor Correction Application, IEEE APEC 2010, pp.30-35, Feb. 2010, 2010.02.
114. Shinya HIROMITSU, Mariko OGAWA, Seiya ABE, Masahito SHOYAMA, Yu YONEZAWA, Naoyuki MISHIMA, Transient Current Circuit for Switching Loss Reduction in Buck Converters, INTELEC 2009, PC3-2, pp.1-5, Oct. 2009, 2009.10.
115. Seiya ABE, Mariko OGAWA, Toshiyuki ZAITSU, Satoshi OBATA, Masahito SHOYAMA, Tamotsu NINOMIYA, Frequency Response Improvement of DSP Controlled DC-DC Converter with Pole-Zero Cancellation Technique, INTELEC 2009, PC3-3, pp.1-6, Oct. 2009, 2009.10.
116. Seiya ABE, Kosuke NOMURA, Kentaro FUKUSHIMA, Masahito SHOYAMA, Tamotsu NINOMIYA, Akira MATSUMOTO, Akiyoshi FUKUI, Mikio YAMASAKI, Noise Current Characteristics of Semiconductor Circuit Breaker during Break-Off Condition in DC Power Supply System, INTELEC 2009, PA1-3, pp.1-5, Oct. 2009, 2009.10.
117. Kentaro FUKUSHIMA, Isami NORIGOE, Masahito SHOYAMA, Tamotsu. NINOMIYA, Yosuke HARADA, Kenta TSUKAKOSHI, The Effect of Series LC Circuit Parameters on Current-Ripple Reduction in Pulse-Link DC-AC Converter for Fuel Cell Applications, INTELEC 2009, RE4-1, pp.1-6, Oct. 2009, 2009.10.
118. EKA Firmansyah, Satoshi TOMIOKA, Seiya ABE, Masahito SHOYAMA, Tamotsu NINOMIYA, A Critical-Conduction-Mode Bridgeless Interleaved Boost Power Factor Correction, INTELEC 2009, PC16-2, pp.1-5, Oct. 2009, 2009.10.
119. G. M. Dousoky, M. Shoyama, T. Ninomiya, Double-Hybrid Spread-Spectrum Technique for Conducted-EMI Reduction in DC-DC Switching Regulators with FPGA-Based Controller, INTELEC 2009, PEC-2, pp.1-6, Oct. 2009, 2009.10.
120. Sihun Yang, Seiya Abe, Masahito Shoyama, Design of LLC Resonant Converter Using Planar Magnetic Component, INTELEC 2009, PC14-4, pp.1-5, Oct. 2009, 2009.10.
121. Seiya ABE, Masahito SHOYAMA, Tamotsu NINOMIYA, Optimal Design of Output Filter Capacitor for Peak Current Mode Control Converter with First-Order Response, EPE 2009, D.S.3-2, pp. 1-8, Sep. 2009, 2009.09.
122. G. M. Dousoky, M. Shoyama, T. Ninomiya, Triple-Hybrid Spread-Spectrum Technique for Conducted-Noise Reduction in DC-DC Converters with an FPGA-Based Implementation, EPE 2009, D.S.1-9, pp. 1-8, Sep. 2009, 2009.09.
123. EKA Firmansyah, Satoshi TOMIOKA, Seiya ABE, Masahito SHOYAMA, Tamotsu NINOMIYA, A Zero-Current-Switch Quasi-Resonant Boost Converter with Transformer Compensated Clamp Circuit, EPE 2009, D.S.1-1, pp. 1-8, Sep. 2009, 2009.09.
124. Kentaro FUKUSHIMA, Isami NORIGOE, Masahito SHOYAMA, Tamotsu. NINOMIYA, Yosuke HARADA, Kenta TSUKAKOSHI, Influence of Small-Series LC circuit on the Input Current-Ripple for Pulse-Link DC-AC Converter for Fuel Cells Applications, EPE 2009, L.S.1f, pp. 1-8, Sep. 2009, 2009.09.
125. G. M. Dousoky, M. Shoyama, T. Ninomiya, Studying the Design and Performance of Conducted-Noise Spectrum Spreading in DC-DC Converters with an FPGA-Based Controller, 2009 International Symposium on Electromagnetic Compatibility, EMC’09/Kyoto, 2009.07.
126. S. Abe, M. Hirokawa, M. Shoyama, T. Ninomiya, Optimal Design Considerations of a Bus Converter for On-Board Distributed Power Systems, Journal of Power Electronics (JPE), Vol.9, No.3, pp.447-455, 2009.05.
127. E. Firmansyah, S. Tomioka, S. Abe, M. Shoyama, T. Ninomiya, Steady State Characteristics of Active-Clamped Full-Wave Zero-Current-Switched Quasi-Resonant Boost Converters, IEEE 6th IPEMC 2009-ECCE Asia, pp. 556-560, 2009.05.
128. G. M. Dousoky, M. Shoyama, T. Ninomiya, FPGA-Based Techniques for Conducted-Noise Mitigation in DC-DC Power Converters, 2009 Korea-Japan Joint Conference on AP/EMC/EMT, KJJC’09, 2009.05.
129. E. Firmansyah, S. Tomioka, S. Abe, M. Shoyama, T. Ninomiya, Zero Current Switch-Quasi Resonant Boost Converter Performance in Power Factor Correction Application, IEEE APEC 2009, pp. 1165-1169, 2009.02.
130. K. Fukushima, I. Norigoe, M. Shoyama, T. Ninomiya, Y. Harada, K. Tsukakoshi, Input Current-Ripple Consideration for the Pulse-Link DC-AC Converter for Fuel Cells by Small Series LC Circuit, IEEE APEC 2009, pp. 447-451, 2009.02.
131. G. M. Dousoky, M. Shoyama, T. Ninomiya, A Novel Implementation of an FPGA-Based Controller for Conducted-Noise Reduction in Randomly Switched DC-DC Converters, IEEE APEC 2009, pp. 65-69, 2009.02.
132. G. M. Dousoky, M. Shoyama, T. Ninomiya, FPGA-Based Design and Implementation of Spread-Spectrum Schemes for Conducted-Noise Reduction in DC-DC Converters, ICIT 2009, AF-011282, 2009.02.
133. Characteristics of a Pulse-Link DC-AC Converter for Fuel Cells.
134. K. Fukushima, T. Ninomiya, M. Shoyama, I. Norigoe, Y. Harada, K. Tsukakoshi, Input Current-Ripple Reduction of a Pulse-link DC-AC Converter for Fuel Cells, INTELEC 2008, No. 29-3, 2008.09.
135. K. Fukushima, T. Ninomiya, M. Shoyama, I. Norigoe, Y. Harada, K. Tsukakoshi, Consideration for Input Current-Ripple of Pulse-link DC-AC Converter for Fuel Cells, EPE-PEMC 2008, pp. 148-153, 2008.09.
136. S. Abe, M. Hirokawa, M. Shoyama, T. Ninomiya, Optimal Bus Capacitance Design for System Stability in On-Board Distributed Power Architecture, EPE-PEMC 2008, pp. 401-407, 2008.09.
137. K. Fukushima, T. Ninomiya, M. Shoyama, I. Norigoe, Y. Harada, K. Tsukakoshi, Consideration for Input Current-Ripple Reduction on a Novel Pulse-link DC-AC Converter for Fuel Cells, PESC 2008, pp. 1284-1289, 2008.06.
138. S. Abe, M. Hirokawa, M. Shoyama, T. Ninomiya, Optimal Intermediate Bus Capacitance for System Stability on Distributed Power, PESC 2008, pp. 611-616, 2008.06.
139. K. Fukushima, I. Norigoe, T. Ninomiya, M. Shoyama, Y. Harada, K. Tsukakoshi, Input Current-Ripple Reduction Method on a Novel Pulse-link DC-AC Converter for Fuel Cells Applications, SPEEDAM 2008, pp. 821-825, 2008.06.
140. S. Abe, M. Shoyama, T. Ninomiya, First-Order Transient Response of DC-DC Converter with Peak Current Mode Control for Low-Voltage Application, SPEEDAM 2008, pp. 32-36, 2008.06.
141. K. Fukushima, T. Ninomiya, M. Shoyama, I. Norigoe, Y. Harada, K. Tsukakoshi, Z. Dai, Consideration for the Pulse-link DC-AC Converter for Fuel Cells, IEEE APEC 2008, pp. 298-303, 2008.02.
142. M. Shoyama, and T. Ninomiya, Common-mode Noise Reduction in the Watkins-Johnson Converter, 7th International Conference on Power Electronics (ICPE’07), pp.1,083-1,086, 2007.10.
143. M. Shoyama, Y. Kurokawa, and T. Ninomiya, Common-mode Noise Reduction in the Watkins-Johnson Converter, IEEE 29th INTELEC’07, pp.577-580, 2007.09.
144. M. Shoyama, and T. Ninomiya, Output Voltage Control of Resonant Boost Switched Capacitor Converter, The Fourth Power Conversion Conference (PCC-NAGOYA 2007), No.LS3-4-4, pp.899-903, 2007.04.
145. M. Shoyama, and T. Ninomiya, Common-Mode Noise Reduction Techniques Using Current Cancellation in Switching Power Supplies, 2006 Korea-Japan Joint Conference on AP/EMCJ/EMT (KJCC 2006), pp.197-200, 2006.09.
146. M. Shoyama, F. Deriha, and T. Ninomiya, Evaluation of Conducted Noise of Resonant Switched Capacitor Converter, IEEE International Telecommunications Energy Conference, No.14-3, pp.205-209, 2006.09.
147. M. Shoyama, and T. Ninomiya, Common-Mode Noise Reduction by Current Cancellation in Switching Power Supplies, The 7th International Joint Symposium between Chungnam National University and Kyushu University(第7回忠南大学・九州大学間国際合同シンポジウム), pp.67-70, 2005.09.
148. M. Shoyama, F. Deriha, and T. Ninomiya, Steady-State Characteristics of Resonant Switched Capacitor Converter, Journal of Power Electronics (JPE), Vol.5, No.3, pp.206-211, 2005.07.
149. M. Shoyama, F. Deriha, and T. Ninomiya, Operation Analysis and Control of Resonant Boost Switched Capacitor Converter with High Efficiency, IEEE 36th Power Electronics Specialists Conference (PESC '05) Record, pp.1966-1971, 2005.06.
150. M. Shoyama, T. Tsumura, and T. Ninomiya, Optimum Design Considerations of Balanced Boost Switching Converter to Reduce Common-Mode Conducted Noise, 2005 International Power Electronics Conference (IPEC '05), pp.1150-1154, 2005.04.
151. M. Shoyama, F. Deriha, and T. Ninomiya, Operation Analysis of Resonant Switched Capacitor Converter, 2005 International Power Electronics Conference (IPEC '05), pp.508-512, 2005.04.
152. M. Shoyama, F. Deriha, and T. Ninomiya, Resonant Boost Switched Capacitor Converter with High Efficiency, IEEE International Conf. on Industrial Electronics, Control and Instrumentation (IECON '04), No.WC7-2, 2004.11.
153. M. Shoyama, F. Deriha, and T. Ninomiya, Steady-State Characteristics of Resonant Switched Capacitor Converter, 6th International Conference on Power Electronics (ICPE '04), pp.II-137-141, 2004.10.
154. M. Shoyama, M. Ohba, and T. Ninomiya, Common-Mode Noise Reduction by Current Cancellation in Balanced Buck-Boost Switching Converter, 4th International Power Electronics and Motion Control Conference (IPEMC '04), pp.1505-1510, 2004.08.
155. M. Shoyama, T. Naka, and T. Ninomiya, Resonant Switched Capacitor Converter with High Efficiency, IEEE 35th Power Electronics Specialists Conference (PESC '04) Record, pp.3780-3786, 2004.06.
156. M. Shoyama, T. Tsumura, and T. Ninomiya, Mechanism of Common-Mode Noise Reduction in Balanced Boost Switching Converter, IEEE 35th Power Electronics Specialists Conference (PESC '04) Record, pp.1115-1120, 2004.06.
157. T. Ninomiya, M. Shoyama, N. Mutoh, and H. Hayakawa, Common-Mode Noise Reduction Techniques for Switched-Mode Power Converters, 2004 International Symposium on Electromagnetic Compatibility, pp.193-196, 2004.06.
158. M. Shoyama, T. Tsumura, G. Li, and T. Ninomiya, Analysis of Noise Current Cancellation Mechanism in Balanced Boost Switching Converter, 2004 International Symposium on Electromagnetic Compatibility, pp.725-728, 2004.06.
159. M. Shoyama, G. Li, and T. Ninomiya, Balanced Switching Converter to Reduce Common-Mode Conducted Noise, IEEE Transactions on Industrial Electronics, 50, 6, Vol.50, No.6, pp.1095-1099, 2003.12.
160. G. Li, M. Shoyama, and T. Ninomiya, Noise Reduction Mechanism in Common-Source Type Active-Clamped DC-DC Converters, IEEE International Telecommunications Energy Conference, 03CH37481, pp.505-509, 2003.10.
161. M. Shoyama, M. Ohba, and T. Ninomiya, Common-Mode Noise Reduction by Current Cancellation in Balanced Buck-Boost Switching Converter, IEEE International Telecommunications Energy Conference, 03CH37481, pp.499-504, 2003.10.
162. M. Shoyama, T. Tsumura, and T. Ninomiya, Common-Mode Noise Reduction by Current Cancellation in Balanced Boost Switching Converter, 2003 Korea-Japan Joint Symposium on Advanced Industry Applications, pp.18-22, 2003.10.
163. M. Shoyama, G. Li, and T. Ninomiya, Application of Common-Source Active-Clamp Circuit to Various DC-DC Converter Topologies, IEEE Power Electronics Specialists Conference Record, 03CH37427, pp.1321-1326, 2003.06.
164. M. Shoyama, M. Ohba, and T. Ninomiya, Balanced Buck-Boost Switching Converter to Reduce Common-Mode Conducted Noise, IEEE Power Electronics Specialists Conference Record, 02CH37289, pp.2056-2061, 2002.06.
165. M. Shoyama, M. Ohba, and T. Ninomiya, Balanced Buck-Boost Switching Converter to Reduce Common-Mode Conducted Noise, Journal of Power Electronics (JPE), Vol.2, No.2, pp.139-145, 2002.04.
166. M. Shoyama, M. Ohba, and T. Ninomiya, Balanced Buck-Boost Switching Converter to Reduce Common-Mode Conducted Noise, 2001 International Conf. on Power Electronics (ICPE), pp.212-216, 2001.10.
167. T. Ninomiya, M. Shoyama, C.F. Jin, and G. Li, EMI Issues in Switching Power Converters, 13th International Symposium on Power Semiconductor Devices & ICs (ISPSD), pp.81-85, 2001.06.
168. G. Li, M. Shoyama, T. Ninomiya, and T. Inoue, Common-Mode Noise Reduction in DC-DC Converters by Common-Source Type Active-Clamp Technique, IEEE Power Electronics Specialists Conference Record, 01CH37230, pp.1773-1778, 2001.06.
169. M. Shoyama, T. Okunaga, G. Li, and T. Ninomiya, Balanced Switching Converter to Reduce Common-Mode Conducted Noise, IEEE Power Electronics Specialists Conference Record, 01CH37230, pp.451-456, 2001.06.
Membership in Academic Society
  • The Institute of Electrical and Electronics Engineers, Inc.
  • The Institute of Electronics, Information and Communication Engineers
  • The Institute of Electrical Engineers of Japan
  • The Society of Instrument and Control Engineers
Awards
  • In gratitude and appreciation for your efforts to the success of the 37th International Telecommunications Energy Conference
  • Contribution to the progress of Electronics, Information and Communications Engineering, and Related science and technology as an IEICE Member
  • In gratitude and appreciation of your hard work, effort and enthusiasm given so generously to help make the IPEC-Hiroshima 2014 which was held during May 18-21, an outstanding success
  • "Variable Step Size Maximum Power Point Tracker Using Single Variable for Stand-alone Battery Storage PV Systems", published in Journal of Power Electronics (JPE), Vol.11, No.2, pp.218-227, March, 2011.
  • Noise Current Characteristics of Semiconductor Circuit Breaker during Break-Off Condition in DC Power Supply System
  • In recognition of professional standing the Officers and Board of Directors of the IEEE certify that Masahito Shoyama has been elected to the grade of Senior Member.