Electromagnetic interference prediction technology of new energy motor drive system

Abstract New energy vehicles in the running process inevitably produce common and differential modes such as electromagnetic interference (EMI), to forecast motor drive system. This paper analyses mechanism of EMI, find out EMI sources transmission ways, system for disturbance component modelling analysis is done, along with test. The results show that difference between peak value minimum conducted radiation increases increase current has no relation frequency. Both near-field are related With intensity, intensity migrates from low frequency high frequency, gap also increases.