One of the main problems of dynamic wireless charging (DWC) systems for electric vehicles (EVs) proposed in recent years is the variation of mutual inductance caused by the motion of EVs, which leads to the fluctuatio...
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ISBN:
(纸本)9798350321050
One of the main problems of dynamic wireless charging (DWC) systems for electric vehicles (EVs) proposed in recent years is the variation of mutual inductance caused by the motion of EVs, which leads to the fluctuation of system output voltage. In this paper, the output voltage control problem of EV long guide DWC system is studied. Firstly, the compensation circuit suitable for the system is determined. Secondly, the linear variable parameter model of DWC system is established by considering mutual inductance time varying and combining circuit theory and control theory. Finally, the sliding mode control is applied to the output voltage control of DWC system and the sliding mode controller is designed, so that the output voltage can quickly track the expected reference voltage and improve the anti-position migration ability of the charging system. The simulation results show that the receiver output voltage can track the reference signal well even if the receiver coil has transverse and longitudinal displacement.
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