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

The Korean Institute of Power Electronics (전력전자학회)
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Clamp-mode Three-level High Voltage Gain Boost Converter using Coupled Inductor

결합인덕터를 이용한 전압 클램프 3-레벨 고승압 컨버터

  • Kim, Su-Han (School of Energy Eng., Kyungpook National University) ;
  • Cha, Hon-Nyong (School of Energy Eng., Kyungpook National University) ;
  • Kim, Heung-Geun (Dept. of Electrical Eng., Kyungpook National University) ;
  • Choi, Byung-Cho (School of Electronics Eng., Kyungpook National University)
  • Received : 2012.07.20
  • Accepted : 2012.10.16
  • Published : 2012.12.20
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Abstract

In this paper, a non-isolated high step-up and high efficiency boost converter is proposed. By using the 3-level boost converter structure, the proposed converter can obtain higher voltage gain than conventional high step-up converters. The voltage spike of the switching device is well clamped by using the clamp circuit composed of a clamp diode and a capacitor and the energy of the leakage inductor of coupled inductor is effectively transferred to output. Due to the 3-level structure, the equivalent switching frequency of the coupled inductor is doubled, which results in reduced inductor size. A 500 W prototype converter is built and tested to verify performance of the proposed converter.

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References

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