This paper proposes a full integration method for wireless power transfer of electric vehicles using LCCL-S compensation. The magnetic coupling structure utilizes unipolar coils for the transmitter and receiver coils, with an extended DD coil integrated into the transmitter coil as a compensation inductor. This design enhances the ability of the system to charge efficiently when not perfectly aligned. In a misaligned state, the system establishes two magnetic flux paths: one between the transmitter and receiver coils, and another between the compensation inductor coil and receiver coil, thereby increasing the total power of the system misaligned state. And using finite element simulation tools to design the most suitable parameters for the extended DD coil. An experimental prototype with a 3.3 kW power output and a 100 mm air gap was constructed and compared to the traditional integration method. The results show that the proposed magnetic coupling structure maintains at least 63.6% well-aligned value at a door-to-door 150-mm misaligned state and provides 1.05 kW higher power output than the traditional integration method without extra control algorithms.
