Power electronics is a new technology of power transmission and control. Compared with the traditional power transmission, non-contact power transmission has the advantages of low wear rate, safety, reliability, convenience and flexibility. In this way, it avoids the problems of friction, wear, aging and so on in the traditional power supply mode, saves a lot of wires, makes up for the shortcomings of the traditional power transmission mode, and has a wider application range. Therefore, it is of great practical significance to study the key technology of power electronic information transmission for promoting the intelligent development of power transmission in China.