Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title A Novel Non-Isolated Buck Boost Converter with High Voltage Gain and High Efficiency Characteristics
Authors Tran Manh Tuan ; Saghir Amin ; Woojin Choi
DOI 10.6113/TKPE/2019.24.5.319
Page pp.319-326
ISSN 1229-2214
Keywords High voltage gain; High efficiency; NBB(Non-Isolated Buck-Boost) converter; Cascode structure
Abstract The use of high-voltage gain converters is essential for distributed power generation systems with renewable energy sources, such as fuel and solar cells, due to their low-voltage characteristics. In this study, a novel high-voltage gain non-isolated buck boost converter topology is proposed to cope with the need of a high-voltage conversion ratio without the transformer for the renewable energy sources. Given that the proposed topology utilizes the cascode structure, the voltage gain and the efficiency are higher than those of other conventional non-isolated converters. To demonstrate the feasibility of the proposed topology, the operation principle is presented, and the steady-state characteristics are analyzed in detail. The validity of the proposed converter is verified by experiments with a 400 W prototype converter.