Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Dynamic characteristic improvement of battery chargers for personal mobility devices using sliding mode control

  • Junhyeok Choi (Department of Electrical Energy Engineering, Keimyung University) ;
  • Yeongsu Bak (Department of Electrical Energy Engineering, Keimyung University)
  • Received : 2023.09.23
  • Accepted : 2023.10.23
  • Published : 2024.01.20
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Abstract

This paper proposes a control method for improving the dynamic characteristic of battery chargers for personal mobility devices (PMDs) using sliding mode control (SMC). Various types of PMDs have batteries with distinct voltages. Therefore, research on battery chargers for PMDs that can be applied to various types of PMD with distinct voltages has been actively pursued. In battery chargers for PMDs, the output voltage can usually be controlled by a proportional-integral (PI) controller. However, increasing the PI controller gain is necessary to enhance the dynamic characteristic of the output voltage. It results in an overshoot that adversely affects the stability of the battery charger. Therefore, in this paper, a control method using sliding mode control (SMC) is presented for improving the dynamic characteristic without overshoot in the output voltage of battery chargers for PMDs. The validity of the proposed control method is verified by the simulation and experimental results.

Keywords

Acknowledgement

This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIT) (No. RS-2022-00165694).

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