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

The Korean Institute of Power Electronics (전력전자학회)
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A 3-Bridge LLC Resonant Converter with Wide Input/Output Voltage Gain Characteristics

넓은 입·출력 전압이득 특성을 갖는 3 브리지 LLC 공진컨버터

  • Received : 2020.01.13
  • Accepted : 2020.03.11
  • Published : 2020.04.20
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Abstract

This paper presents a DC/DC LLC resonant converter with wide input/output voltage gain characteristics and its control method for efficiency improvement. For a wide input/output voltage gain characteristics without designing small transformer magnetization inductance, the proposed converter changes the topology into three modes of operation according to the main switch switching pattern. In each operating mode, variable LINK voltage modulation and frequency modulation were performed to control output voltage and improve operating efficiency. A prototype of a 5-kW DC/DC LLC resonant converter was built and tested to verify the validity and applicability of the proposed converter.

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References

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