基于模型预测控制的磁耦合谐振式无线电能传输系统研究OA

The magnetically coupled resonant wireless power transfer(MCR-WPT)system based on LCC-S compensation has been widely used due to its advantages of constant current on the primary side,constant voltage on the secondary side,and high degree of topological freedom.However,its output voltage is highly susceptible to external disturbances and parameter variations,making stable voltage regulation difficult to achieve.To address this issue,this paper proposed a method of using model predictive control(MPC)algorithm to adjust the output voltage and power of the wireless energy transmission system.In the proposed method,the input voltage of the secondary-side constant-voltage converter,the inductor current,and the load output voltage were selected as the inputs to the voltage regulation controller,thereby adjusting the duty cycle of the control constant voltage circuit to obtain a stable output voltage.The simulation results of the MCR-WPT system show that compared with the traditional single loop PI control,the improved model predictive control algorithm can enable the wireless power transmission system to reach the expected value faster and more stably under changing external conditions,resulting in better dynamic response of the wireless charging system.