Research on the Electromagnetic Characteristics of an Integrated Multi-Winding Inductive Filtering Converter Transformer and Its Filter System

In this paper, the electromagnetic characteristics of a novel integrated multi-winding inductive filtering converter transformer, including two parallel-connected delta filter windings with zero impedance, are studied. First, based on Ansoft, 3D FEM model transformer is built according to its structural parameters and material characteristics. Next, external circuit connection established realized so corresponding field-circuit coupling can be under three different working conditions. On basis, electric field characteristics, magnetic winding force core loss conditions analyzed. The results show that because harmonic current effectively suppressed, flux chain passing through closer sinusoidal wave potential suppressed; received by each high-frequency vibration component significantly reduced; also reduced. research internal reveals mechanism reducing noise.