The Comparison of the Several Front-end Converters Using in Photovoltaic Inverters

Yongqiang Zhao, Chunfang Wang

College of Automation and Electrical Engineering, Qingdao University, Qingdao, 266071, China

Abstract: This paper introduces the fly-back circuit, active-clamp circuit, single-switch resonant circuit, single-switch resonant circuit with clamping, which are suitable for the pre-stage of low power photovoltaic inverter. simulated by Saber simulation software, their excitation methods, voltage across the switch and soft-switching conditions are compared, the general application are proposed.

Keywords: photovoltaic;  simulation;  comparison