Analysis and Control of Dynamic Wireless Charging Output Power for Electric Vehicle

The static wireless charging of electric vehicle has many disadvantages, such as long charging time, short mileage, and bulky battery pack. In order to study the primary winding of the parallel electric vehicle dynamic wireless charging, a double primary, single receiving winding wireless power transmission system model, it is found that the mutual inductance of the system will have a significant influence on the transmission characteristics. To realize the stable regulation of the output power, a boost DC-DC converter based on the auxiliary side control is added to the traditional double primary winding parallel wireless power supply. The design of BP neural network controller, the duty cycle changes through the control of high frequency switch, to achieve stable output power control; compare with traditional PID control, the superiority of the designed controller is proved; through the simulation of out of sample data, BP neural network controller is proved to have better generalization ability.