Abstract: MCR-WPT( Magnetic Coupling Resonant Wireless Power Transfer) is a very important branch of wireless transmission technology. In recent years, its excellent power transmission efficiency in medium distance has attracted great attention at home and abroad, and has made a lot of research results in system characteristics and transmission efficiency. The principle of magnetic resonance radio power transmission is derived and analyzed in detail, and an improved PSO( Particle Swarm Optimization) algorithm is used to optimize the impedance matching of the system, and the superiority of this algorithm is verified by experiments.

Key words: wireless power transfer; , magnetic resonant; , S-Scompensation model; , transmission efficiency;  impedance matching