The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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A Novel Non-Isolated Buck Boost Converter with High Voltage Gain and High Efficiency Characteristics

고변압비와 고효율 특성을 가진 새로운 비절연형 벅부스트 컨버터

  • Tran, Manh Tuan (Dept of Electrical Engineering, Soongsil University) ;
  • Amin, Saghir (Dept of Electrical Engineering, Soongsil University) ;
  • Choi, Woojin (Dept of Electrical Engineering, Soongsil University)
  • Received : 2019.03.11
  • Accepted : 2019.04.28
  • Published : 2019.10.20
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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.

Keywords

Acknowledgement

Supported by : Chungnam Center for Creative Economy and Innovation(CCCEI)

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