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C. Yamazaki,E. Ikawa,I. Tominaga,T. Saito,I. Uchiki,Y. Takami,S. Yamada 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
A 3 ㎿-class high-precision IGBT chopper type power supply was developed for the bending electromagnets of the Heavy-Ion Facility at Gunma University. The current ripple was smaller than ±1×10??, and the current tracking error was smaller than ±1×10?⁴. Heavy ion beams were successfully accelerated with this power supply, and medical treatment commenced on 16th March 2010.
R. Inzunza,H. Yamaguchi,E. Ikawa,T. Sumiya,Y Fujii,A. Satoh 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper introduces the development of a switch-clamped utility-interactive photovoltaic inverter intended for very large scale photovoltaic (PV) power generation. The switch-clamped inverter proposed is superior to the diode-clamped inverter in terms of converter losses and harmonic distortion, thus a high efficiency of 98.5% was achieved by applying a switch-clamped three-level inverter and latest 6<SUP>th</SUP> generation IGBTs. The adoption of a three level configuration, supported by CAD design tools made possible to achieve a considerable reduction in size. Factory test results are presented to confirm the inverter performance and suitability for large-scaled photovoltaic applications.