Design and Simulation of Radio Energy Transmission System Based on Magnetic Coupling Resonance

At present, most of the sensors in switchgear and monitoring systems are powered by battery. Because the battery is limited, it will affect the continuous operation of the sensor, and often unplugging the battery will also bring security risks. Therefore, it is necessary to study the wireless power supply technology according to the power supply mode of the sensor. Based on Multisim circuit system simulation platform and ANSYS Maxwell electromagnetic field simulation software, a radio energy transmission system based on magnetically coupled resonance technology is designed in this paper. In the scheme, the circuit system and the transmitting electromagnetic coil are designed respectively, the parameter configuration method of the designed system is described, and the series compensation structure is adopted. The simulation results show that the system can realize the infinite energy transmission of 150mm distance, and the output voltage is stable between 3.5V-5V, which meets the power supply needs of sensors in the switchgear. This provides a useful reference for the power supply mode of the sensor and the configuration method of the radio energy transmission system.