Prediction Method of Magnetic Properties in Magnetic Core due to Machining Process by Using LLG Equation

Abstract

  An analytical method taking deterioration of magnetic core due to machining process into consideration and finding the optimum processing method are essential to development of high-efficiency electric machines. In a previous paper, simplified Landau-Lifshitz-Gilbert (LLG) equation, which expresses the behavior of magnetizations inside the magnetic core, was used for calculating magnetic properties of the electromagnetic steel sheet. It was demonstrated that the proposed method can express the dynamic behavior of the magnetic core including manor loops. This paper presents a novel prediction method of magnetic properties in the machined magnetic core by using the simplified LLG equation.