Non-isolated high step-up DC-DC converters based on geometric structure model

抄録

A geometric structure model method has been proposed to provide more non-isolated step-up DC-DC converters and improve the existing topology derivation methods. Based on the three existing DC-DC converters, a geometric structure model is constructed. According to different connection relationships and components represented in the model, ten new high step-up converter topologies are derived. A group of topologies consisting of four DC-DC converters is taken as an example, and a superior converter, namely the high-boost switching inductor converter, denoted as HB-SL converter, is obtained through characteristic comparison. Furthermore, the voltage gain, voltage stress and component parameter design criteria of HB-SL converter are given, and the effectiveness of HB-SL converter is verified by experiments.