Abstract
Power fluctuation caused by the movement of the receiver has always been a difficult problem for the development of dynamic wireless charging of electric vehicles (EVs). A segmented dynamic wireless charging system (DWCS) based on double transmitting coils and T-type compensation network is presented in this paper to restrain the power fluctuation. Cross-coupling effects are removed by adding switches in series with the transmitting coils. A genetic algorithm based multiobject optimization for the power fluctuation factor (PFF) and the reactive component is used to design the parameters of the T-type network. Simulations show that the optimization of the T-type network is not limited to a certain structure of the transmitter and receiver coils but can minimize the PFF for different values of the gap between the transmitting coils. Experiments for separated and overlapped transmitting coils show that the proposed double-transmitting-coil power supply scheme T-type network can maintain the power fluctuation less than 6% of the average output power with the dc–dc efficiency above 85%.
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