Conducted electromagnetic interference analysis method for traction drive system in high speed trains

In this paper, a conducted electromagnetic interference (EMI) analysis method for traction drive system in high speed trains based on the equivalent circuit of EMI coupling paths is proposed. The conducted EMI of the traction drive system is analyzed, and equivalent circuit of EMI paths is established. Moreover, the influence rules of parasitic parameters on EMI spectrum distribution are analyzed. Finally, the simulation results are given to validate the correctness of the proposed EMI analysis method. The proposed conducted EMI analysis method can be used to predict the conducted EMI noise of traction drive system in high speed trains.