Study on electromagnetic interference restraining of electric vehicle charging system

A study on electromagnetic interference restraining of electrical vehicle charging system is presented. The reason why the charging system would generate electromagnetic interference, the propagation ways and the hazard of electromagnetic interference are presented in this paper, through analysis of the structure and control strategy of charging system. And it takes corresponding technology to restrain electromagnetic interference, such as the selection of power devices, system grounding, electromagnetic shielding technology, filter isolation technology, mechanism design, and cables reasonable distributing. The results of electromagnetic emission test of electrical vehicle charging system show that the charging system designed by electromagnetic compatibility (EMC) technology has good electromagnetic interference restraining performance.