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Primary-side control method in two-transmitter inductive wireless power transfer systems for dynamic wireless charging applications

This paper present a method to estimate the output current or voltage in the primary-side of a two-transmitter inductive wireless power transfer system, which has been introduced to achieve the continuity of power transfer, without any direct measurement on the receiver coil and load conditions. The proposal can ensure the continuity and stability of charging in dynamic wireless power transfer system while receiver moving or stopping on track within lateral offset tolerance. Both cross coupling analysis and Primary-side estimation of parameters for the serial and parallel compensated receiver are presented. Simulated results are presented to validate the viability of the proposed method.