Mitigation of Electromagnetic Interference from DC-DC Converters for Electric Vehicle Application

Electromagnetic interference (EMI) produced by power electronic components like DC-DC converters and associated switching components is a major problem in electric vehicles. Most techniques for mitigation of EMI are to use a single filter. This study focuses on combining filter circuits to mitigate EMI. Two filter combinations are considered in this paper. Module 1 is a combination of snubber circuit and line impedance stabilization network (LISN), and Module 2 is a PI filter with snubber circuit and LISN. Simulation studies are done for a buck converter with the filter modules and the filter performances are compared.