Research on Primary Side Control of Magnetic Coupled Radio Energy Transmission Based on DSP

In order to solve the problem that the load power of the traditional magnetic coupling resonant radio energy transmission system changes too much after the transmission distance changes, and combined with the application scenario of implantable medical equipment, a closed-loop control program of magnetic coupling radio energy transmission system based on DSP is designed. In this paper, a series model is selected for research and analysis, and sufficient and necessary conditions for load power stability are analyzed from the perspective of equivalent circuit. According to the characteristics of implantable medical devices that are difficult to control the secondary side, a set of control program based on primary side feedback is designed, and PID regulation is introduced, and finally how to achieve fast iteration of the control program at 1MHZ is studied.