Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Regenerative Current Control Method of Bidirectional DC/DC Converter for EV/HEV Application

  • Lee, Jung-Hyo (Dept. of Electrical Engineering, Sungkyunkwan University) ;
  • Jung, Doo-Yong (Dept. of Electrical Engineering, Sungkyunkwan University) ;
  • Lee, Taek-Kie (Dept. of Electrical Engineering, Hankyoung National University) ;
  • Kim, Young-Ryul (Dept. of Electrical Engineering, Anyang University) ;
  • Won, Chung-Yuen (Dept. of Electrical Engineering, Sungkyunkwan University)
  • Received : 2012.02.07
  • Accepted : 2012.06.13
  • Published : 2013.01.02
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Abstract

The control method of the bidirectional DC/DC converter for instantaneous regenerative current control is described in this paper. The general method to control the DC/DC converter is the output voltage control. However, the regenerative current cannot be controlled to be constant with this control method. To improve the performance of the conventional control method, the DC-link voltage of the inverter is controlled within the tolerance range by the instantaneous boost and buck operations of the bidirectional DC/DC converter. By the proposed control method, the battery current can be controlled to be constant regardless of the motor speed variation. The improved performance of the DC/DC converter controlled by the proposed control method is verified by the experiment and simulation of the system with the inverter and IPMSM(Interior Permanent Magnet Synchronous Motor) which is operated by the reduced practical speed profile.

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References

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