Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Controller Design for a Quick Charger System Suitable for Electric Vehicles

  • Jeong, Hae-Gwang (Dept. of Electrical and Computer Engineering, Ajou University) ;
  • Lee, Kyo-Beum (Dept. of Electrical and Computer Engineering, Ajou University)
  • Received : 2012.05.18
  • Accepted : 2013.05.07
  • Published : 2013.09.01
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Abstract

This paper proposes a new design for quick battery charger systems for electric vehicles that consists of a three-phase inverter and a full-bridge converter which use the phase-shift method. The 3-phase inverter controls the input and DC-link voltage by use of a current controller and a voltage controller. The full-bridge converter transfers the DC-link voltage to a fixed output voltage. Designs for the output-side converter and controller for improved performance are proposed in this paper. Design schemes for the filter and controller of an input-side inverter are also presented. Furthermore, the paper proposes a compensation method for the offset current that is caused by switch failure and circuit problems. Simulations and experiments have been performed on a 50kW-battery charger system that is suitable for vehicles. The presented results verify the validity of the proposed method and the superiority of the system over conventional methods.

Keywords

References

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