High Efficiency Wireless Power Transfer System with Low Voltage Input

Based on the magnetic coupling resonant wireless power transmission technology, how to improve the efficiency of the system under the condition of low voltage and high current input is studied. In this paper, a wireless power transfer system based on Z-source inverter is proposed. In the environment of low voltage and high current input, the input voltage is low, and the increase of DC-DC link will increase the loss of the system. Therefore, this paper analyzes the circuit of the magnetically coupled resonant wireless power transmission system in the low-voltage input and high-current output environment, and applies the Z-source inverter to the low-voltage and high-current input environment to improve the performance of the system.