Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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Grid-Connected Photovoltaic Inverter with Zero-Current-Switching

  • Choi Hang-Seok (Department of Electrical Engineering Seoul National University) ;
  • Cho Y. J. (Department of Electrical Engineering Seoul National University) ;
  • Kim J. D. (Department of Electrical Engineering Seoul National University) ;
  • Cho B. H. (Department of Electrical Engineering Seoul National University)
  • Published : 2001.10.01
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Abstract

This paper presents a new zero current switching (ZCS) inverter for grid-connected photovoltaic system. 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. Analysis, small signal modeling and design procedure are presented. The validity of the proposed system is verified by experimental results from the 1.2kW prototype inverter operating at 40kHz.

Keywords