Design of wireless energy transfer system based on coupled magnetic resonances

摘要

In order to explore the transmission performance of wireless power transmission system based on magnetic coupling resonance, this paper analyzes the principle of wireless energy transmitting based on coupled magnetic resonances, introduces the design scheme of experiment prototype which is composed of driving circuit, transmitting circuit, intensifier and receiving circuit. Experiments have been done to discover the relationship between the transmit distance, resonant frequency and inductance in the circuit when parameters of transmitting coils and receiving coil are align. This paper also finds the relationship between the transmit distance and diameter of the receiving coils when parameters of transmitting coils and receiving coils are different. Then a novel scanning transmitting coil was proposed. The investigation offers a new possibility in the field of omnidirectional wireless power transmission, contributing to further research.