Modeling of a Power Electronic Converter for EMC in the Conduction Emission Frequency Band

Abstract

With the advancement of high-frequency switching devices, the electro-magnetic interferences (EMI) have become problems in power electronic converter designs. It is necessary for an electro-magnetic compatibility (EMC) design to prospect and consider its possible EMI levels. This paper describes how to compute effects from a power converter to an object point to reduce conduction EMI noises effectively by an appro-priate design. First modeling techniques for converter elements are discussed for a model in the conduction emission frequency band by the parameter tuning method and for line constants by an analytical derivation. Then a derived model is simulated for harmonic distributions of loop currents and their magnetic fields.