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Dynamic Characteristic Improvement of Integrated On-Board Charger Using a Model Predictive Control

Author

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  • Yeongsu Bak

    (Department of Electrical Energy Engineering, Keimyung University, Daegu 42601, Republic of Korea)

Abstract

This paper proposes a dynamic characteristic improvement of an integrated on-board charger (OBC) using a model predictive control (MPC) method. The integrated OBC performs both battery charging and starter generator (SG) driving for engine starting in plug-in hybrid electric vehicles (PHEVs). If it performs battery charging, battery-side voltage and battery-side current are control objects which are usually controlled by using a proportional-integral (PI) controller. However, it has the disadvantage of undesirable dynamic characteristics, and gain tuning of the PI controller is necessary to properly control the voltage and current. Therefore, this paper proposes the MPC method for the dynamic characteristic improvement of integrated OBC. It can achieve not only dynamic characteristic improvement, but also robustness from the abrupt change of load impedance. By using the proposed MPC method for integrated OBC, the settling time to control the output voltage is decreased by 50% in the transient state compared to that by using the PI controller. The effectiveness of the proposed MPC method is verified by simulation and experimental results.

Suggested Citation

  • Yeongsu Bak, 2022. "Dynamic Characteristic Improvement of Integrated On-Board Charger Using a Model Predictive Control," Energies, MDPI, vol. 15(22), pages 1-16, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:22:p:8745-:d:979219
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    References listed on IDEAS

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    1. Yeongsu Bak & Eunsil Lee & Kyo-Beum Lee, 2015. "Indirect Matrix Converter for Hybrid Electric Vehicle Application with Three-Phase and Single-Phase Outputs," Energies, MDPI, vol. 8(5), pages 1-18, April.
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