Title :
A zero-voltage-switching bidirectional converter for PV systems
Author :
Shiji, Hajime ; Harada, Kazurou ; Ishihara, Yoshiyuki ; Todaka, Toshiyuki ; Alzamora, Guillermo
Author_Institution :
Fac. of Eng., Doshisha Univ., Kyoto, Japan
Abstract :
This paper presents a novel ZVS bidirectional 1 kW class DC-DC converter used for a photovoltaic (PV) system. The proposed circuit is based on a boost&buckboost converter, which consists of a boost converter and a buckboost converter. Bidirectional soft switching is realized by using of coupled inductors and auxiliary switches in the circuit. From the analysis of the circuit operation, ZVS conditions of the switches are derived. In the experiment, the maximum efficiency of the proposed converter during forward power flow was 97.1% on output power of 320 W.
Keywords :
DC-DC power convertors; photovoltaic power systems; switching convertors; 1 kW; 320 W; 97.1 percent; Bidirectional soft switching; DC-DC converter; PV systems; ZVS bidirectional; auxiliary switches; boost&buckboost converter; coupled inductors; power flow; zero-voltage-switching bidirectional converter; Circuit analysis; Coupling circuits; DC-DC power converters; Inductors; Load flow; Photovoltaic systems; Solar power generation; Switches; Switching circuits; Zero voltage switching;
Conference_Titel :
Telecommunications Energy Conference, 2003. INTELEC '03. The 25th International
Conference_Location :
Yokohama, Japan
Print_ISBN :
4-88552-196-3
