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

The Korean Institute of Power Electronics (전력전자학회)
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Design and Implementation of 1.8kW bi-directional LDC with Parallel Control Strategy for Mild Hybrid Electric Vehicles

병렬제어기법이 적용된 1.8kW급 마일드 하이브리드 양방향 LDC 설계 및 구현

  • Kim, Hyun-Bin (Dept. of Electrical Engineering, Daejin University) ;
  • Jeong, Jea-Woong (Dept. of Electrical Engineering, Daejin University) ;
  • Bae, Sungwoo (Dept. of Electrical Engineering, Yeungnam University) ;
  • Kim, Jong-Soo (Dept. of Electrical Engineering., Korea Daejin University)
  • Received : 2016.10.06
  • Accepted : 2016.12.12
  • Published : 2017.02.20
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Abstract

This paper presents a design and parallel control strategy of 1.8 kW low-voltage DC-DC converter (LDC) for mild hybrid electric vehicles to improve their power density, system efficiency, and operation stability. Topology and control scheme are important on the LDC for mild hybrid electric vehicles to achieve high system efficiency and power density because of their very low voltage and large current in input and output terminals. Therefore, the optimal topological structure and control algorithm are examined, and a detailed design methodology for the power and control stages is presented. A working sample of 1.8 kW LDC is designed and implemented by applying the adopted topology and control strategy. Experimental results indicate 92.45% of the maximum efficiency and 560 W/l of power density.

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References

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