Study of High-Pressure Environments Effect on Iron Loss in Motors With Amorphous Alloy Core

Abstract

To accurately analyze the iron loss in motors with amorphous alloy cores (AACs) under high pressure, this article proposes models for calculating the magnetic properties of AAC considering the pressure. In this article, the shape of AAC specimens is determined based on the analysis of the motor topology. The relative permeability and specific total loss of AAC under high pressure are measured by the high-pressure magnetic properties experimental platform, and the change law of magnetic properties is analyzed by the experimental results. The specific total loss of AAC under high pressure is analyzed based on the classical two-term model. This article proposes a two-term piecewise variable coefficients model of the specific total loss of AAC considering the pressure. The model introduces correction coefficients considering the pressure, which effectively solves the problem of accurately calculating the core loss of AAC under high pressure. Based on the model, the effect of high-pressure environments on the iron loss in motors with AAC is analyzed. The experimental results of a motor under high pressure verify the validity and accuracy of the proposed model. The iron loss in motors with AAC under high-pressure environments can be accurately predicted using this model.