대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2001년도 하계학술대회 논문집 B
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- Pages.953-955
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- 2001
영전류 스위칭 계통 연계형 태양광 발전 인버터
Grid-Connected Photovoltaic Inverter with Zero-Current-Switching
- Choi, Hang-Seok (School of Electrical Engineering, Seoul National University) ;
- Kim, J.D. (School of Electrical Engineering, Seoul National University) ;
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Cho, B.H.
(School of Electrical Engineering, Seoul National University)
- 발행 : 2001.07.18
초록
This paper presents a new zero current switching (ZCS) inverter for grid-connected photovoltaic single phase inverter system. The auxiliaey circuit for the soft-switching consists of two resonant inductors and two resonant capacitors as well as two auxiliary switches rated at lower power. The proposed circuit provides zero current switching condition for all the switches, which reduces switching losses significantly. It is controlled to extract maximum power from the solar array and to provide sinusoidal current into the mains. The validity of the proposed system is verified by experimental results from the 1.2kW prototype inverter operating at 40kHz.
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