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An Auxiliary Passive Circuit and Control Design for Wireless Power Transfer Systems in DC Microgrids with Zero Voltage Switching and Accurate Output Regulations

Author

Listed:
  • Hu Xiong

    (Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China)

  • Bin Xiang

    (Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China)

  • Yuan Mao

    (College of Information Engineering, The Zhejiang University of Technology, Hangzhou 310023, China)

Abstract

This paper presents an auxiliary passive circuit and control design for wireless power transfer (WPT) systems in DC microgrids to achieve optimal power transfer efficiency while maintain accurate output voltage regulation. An auxiliary inductance is added at the transmitter resonator to form a current sink to ensure zero voltage switching (ZVS) of the primary-side full-bridge inverter with even extremely light load conditions. Moreover, an adaptive proportional–integral (PI) controller is adopted to track the output voltage references by regulating the phase shift angle of the phase shift control for the full-bridge inverter. The coefficients of the adaptive PI controller are determined by the inductance of the auxiliary inductance. Both simulation and experimental results validated the effectiveness of the proposed circuit and control design in achieving optimal efficiency and output voltage regulation for WPT systems in DC microgrids with source and load variations.

Suggested Citation

  • Hu Xiong & Bin Xiang & Yuan Mao, 2023. "An Auxiliary Passive Circuit and Control Design for Wireless Power Transfer Systems in DC Microgrids with Zero Voltage Switching and Accurate Output Regulations," Energies, MDPI, vol. 16(2), pages 1-21, January.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:2:p:694-:d:1027768
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    References listed on IDEAS

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    1. Junli Deng & Yuan Mao & Yun Yang, 2020. "Distribution Power Loss Reduction of Standalone DC Microgrids Using Adaptive Differential Evolution-Based Control for Distributed Battery Systems," Energies, MDPI, vol. 13(9), pages 1-15, April.
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