LLG方程式を取り入れた磁気回路モデルに関する考察

概要

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The development of highly-efficient machines has recently been urgently required from the viewpoint of conserving energy and protecting the environment. Therefore, a method of quantitative analysis that can be used to calculate core loss with a high degree of high accuracy is necessary. This paper presents a novel model for a magnetic circuit that incorporates the Landau-Lifshitz-Gilbert (LLG) equation. The model consists of two elements. The first is a dc hysteresis element given by the LLG equation, and the second is an inductance element that denotes eddy current loss in iron steel sheets. The proposed model can be used to estimate the dynamic behavior of voltage, current, and flux by coupling it with an external model of an electric circuit. The validity of the proposed method was proved by comparing it with cataloged values.