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

The Korean Institute of Power Electronics (전력전자학회)
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A Switching Method for Minimizing the Over Current in Transient Response of 3-phase Interleaved Bidirectional DC-DC Converter with Frequency Modulation

주파수 변조 방식 3상 인터리브드 양방향 DC-DC 컨버터의 과도상태 과전류를 최소화하기 위한 스위칭 기법

  • Bae, Jongwoo (Dept. of Electrical Eng., Pukyong National University) ;
  • Jeong, Hyesoo (Dept. of Electrical Eng., Pukyong National University) ;
  • Jung, Jae-Hun (Dept. of Electrical Eng., Pukyong National University) ;
  • Nho, Eui-Cheol (Dept. of Electrical Eng., Pukyong National University)
  • Received : 2016.10.23
  • Accepted : 2016.11.07
  • Published : 2016.12.20
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Abstract

This work deals with a switching method for minimizing overcurrent in a three-phase interleaved bidirectional DC-DC converter with frequency modulation. Generally, a three-phase interleaved DC-DC converter is used to reduce a current ripple component. The combined operation of three-phase and two-phase converters can significantly reduce the ripple component. However, the conventional PWM method cannot solve severe overcurrent during phase transfer or frequency variation for power control. To overcome this problem, this work proposes a new PWM switching method. A 3 kW DC-DC power converter is designed and implemented, and the converter is operated in discontinuous current mode with varying switching frequencies for power control. Simulation and experimental results show the validity of the proposed switching method. The proposed switching method can be widely used in the field of current ripple reduction for three-phase interleaved bidirectional DC-DC converters.

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References

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