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Utility-interactive power conditioning system by using conventional forward converter with single high frequency switching device

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4 Author(s)
Isamu Yamamoto ; Chubu University/Dept. Electrical Eng. Kasugai Aichi, Japan ; Keiju Matsui ; Masaru Hasegawa ; Kenji Ando

Some papers of power converters that interface between photovoltaic arrays and a.c. utility system have been reported [1]-[3]. Some innovative utility-interactive power conditioning systems have been also studied [4],[5]. The characteristics of these systems lie in the fact that a full wave rectified current waveform is generated from the d.c. source and converted into a low distortion sinusoidal current which is fed in-phase with the a.c. sinusoidal voltage of the utility. This method has various advantages, but the circuit configurations and control systems are a little complicated. However, as the cost of such systems will rise, it is preferable the utility interactive system without on-site battery. This paper proposes a simple utility interactive photovoltaic power conditioning system with a forward converter. In addition, innovative lossless snubber circuits are presented and discussed.

Published in:

INTELEC 07 - 29th International Telecommunications Energy Conference

Date of Conference:

Sept. 30 2007-Oct. 4 2007