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

The Korean Institute of Power Electronics (전력전자학회)
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LLC Resonant Converter Operating over a Wide Output Voltage Range by Varying the Input Voltage and Changing Operating Modes

입력전압 가변 및 동작 모드 변화를 통해 넓은 출력전압 범위에서 동작하는 LLC 공진컨버터

  • Received : 2017.09.29
  • Accepted : 2017.11.17
  • Published : 2017.12.20
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Abstract

In this paper, we propose an LLC resonant converter that operates over a wide controllable output voltage ($50V_{DC}$ to $800V_{DC}$) and shows high efficiency characteristics under all load conditions and output voltages. Two 3.3kW prototypes are designed for an experimental comparison between the variable frequency control (control scheme 1) and the variable input voltage($V_{IN}$) control (control scheme 2) mechanisms. The experimental results show that the variable input control mechanism demonstrates high efficiency under all loads and output voltages.

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References

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