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Angular Offset Analysis in Wireless Vehicle to Vehicle (V2V) Charging System

Vehicle to vehicle (V2V) charging system had been present which can work together with plug-in EVs charging or operate independently. V2V charging technology can effectively solve the problem of a limited number of plug-in stations and the exhaustion of EVs during the journey. Wireless power transfer (WPT) technology has become a priority technology for V2V charging due to its convenience. This paper proposes an angular offset analysis in wireless V2V system and compares the effects of three transmitter coil structures on system efficiency. The CST simulation results show that the H-field of the two-coil (angle) transmitter structure is higher than the other two benchmark structures. Meanwhile, the hardware implementation results show that when the resonant coils have an angular offset, two-coil (angle) transmitter structure can effectively improve the system efficiency compared to the other two benchmark structures.