Performance Mechanism of Active Clamp Resonant SEPIC Converter in Renewable Energy Systems

Abstract

A 48V active clamp resonant single-ended primary inductor (SEPIC) converter has advantages, which are switch voltage stress suppression and achieving zero-voltage switching (ZVS). Therefore, it is effective in renewable energy systems that can provide a 48V dc bus. This paper clarifies how the active clamp resonant SEPIC converter is affected by whether the active clamp circuit is connected to the input or output side and its performance mechanism is clarified.