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        Research on Synchronous Phase Shift Control Strategy of Bilateral Converter in Bidirectional Inductive Power Transfer System

        Wang Songcen,Jiang Cheng,Lu Qiang,Xia Chenyang,Wei Nan 대한전기학회 2021 Journal of Electrical Engineering & Technology Vol.16 No.5

        It is the key to realize the precise control of power transfer direction and energy to ensure the synchronous phase shift of the bilateral converters in bidirectional inductive power transfer (BD-IPT) system. In order to solve the problem that wireless communication is adopted in bidirectional inductive power transfer system, and the delay caused by the power oscillation aff ects power transfer. A method for synchronizing the control signals of the bilateral converters that track the extreme value of the output DC current is proposed in this paper, and dual phase-shift control is adopted to make the system effi cient when it operates in a wide output power range. First, the power and effi ciency characteristics of the BDIPT system are analyzed in the paper. Next, a method to track the extreme value of the output DC current is designed for synchronization. Then, in order to ensure that the system maintains high-effi ciency operation in a wide power range, a bilateral phase shift control is proposed. Finally, the validity of the scheme is verifi ed through simulation and experiment.

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