Simulation and analysis of constant voltage output control of MCWPT system based on SN topology

In the MC-WPT system, the change of spatial position between the transmitting and receiving coils will cause the mutual inductance to fluctuate, and the load of the system also fluctuates within a certain range, resulting in the non-constant output voltage of the system. The article establishes a simulation model of the Magnetic Coupling Wireless Power Transfer (MC-WPT) system based on Series-None (SN) topology by Simulink and COMSOL simulation software, introduces a single-ended primary inductor converter (SEPIC) at the input of the primary-side inverter and uses a PI regulator to realize the constant voltage output of the system, analyzed the coil mutual inductance and the voltage output when the load fluctuates in a certain range. And verifies the validity of the theoretical analysis.