Abstract：Taking the planar rotation mechanism as an example，a magnetic coupling wireless power

transmission system was designed and studied from two perspectives：the spatial structure of the coils and the

resonant compensation circuit. This system aimed to reduce the voltage fluctuations caused by significant changes

in mutual inductance between the coils during rotation and ensure system stability. Regarding the spatial structure

of the coils，four coils were fixed on a stationary plane at the transmitter end，while two coils were used at the

receiver end and fixed on the plane of the rotation mechanism to ensure that they could induce a certain amount of

current during rotation. For resonant circuit compensation，an LCC/S-type compensation network was adopted. The

current at the transmitter end is only influenced by the compensating inductance and input voltage，further

enhancing the coils' resistance to offset. This approach provides significant advantages in terms of power

transmission and efficiency improvement. Finally，a simulation and experimental platform was established to

validate the design. The experimental results demonstrated that using two receiver coils and the LCC/S topology

resulted in improved output voltage，power，and efficiency while maintaining stability to a certain degree.

      Key words：flat；rotating mechanism；coil spatial structure；LCC/S topology；magnetic-coupled