Study on electromagnetic performance and noise of transformer using two core materials

Abstract

This paper proposes a single-phase three-leg transformer using two core materials. The proposed model is made by using silicon steel for the upper core and amorphous alloy for the lower core. Based on the conventional model using only silicon steel in the core, the proposed model is made by using silicon steel for the upper core and amorphous alloy for the lower core. To highlight the merits of the proposed model, the three-dimensional finite element method (FEM) is used to analyze and compare the performance of the both models, including magnetic flux density distribution, magnetic leakage, displacement and noise. By comparing the results of electromagnetic characteristics, it is found that the proposed model has lower flux density and magnetic leakage. And the vibration noise of the proposed model is further reduced.