Modeling of Anomalous Eddy Current Losses Due to Movement of Domain Walls in Particles of a Soft Magnetic Composite
Modeling of Anomalous Eddy Current Losses Due to Movement of Domain Walls in Particles of a Soft Magnetic Composite
复制标题
软磁复合材料颗粒中磁畴壁运动引起的反常涡流损耗的建模
DOI：
10.1109/tmag.2019.2956977
复制
发表时间：
2020
影响因子：
2.1
通讯作者：
Chen Baichao
中科院分区：
文献类型：
--
作者：
Gao Yanhui;Araki Yusuke;Dozono Hiroshi;Muramatsu Kazuhiro;Guan Weimin;Yuan Jiaxin;Tian Cuihua;Chen Baichao
软磁复合材料（SMC）是由电绝缘体包围的铁磁颗粒组成。为了建立一个电机的磁场分析与SMC芯的均匀化技术，我们已经提出了一种方法来评估的有效磁导率和铁损的SMC芯使用一个粒子的细胞模型考虑到非线性磁特性和涡流。然而，测量的涡流损耗不能通过使用所提出的方法来表示。本文在Pry和Bean磁畴模型的基础上，发展了一种三维涡流分析方法，在胞元模型中模拟磁畴壁运动引起的异常涡流损耗。研究了磁畴结构的非均匀性对反常涡流损耗的影响。结果表明，在经典涡流损耗的基础上加入反常涡流损耗，几乎可以代表实测涡流损耗。
Soft magnetic composites (SMCs) are composed of ferromagnetic particles surrounded by electrical insulation. To establish a homogenization technique for the magnetic field analysis of an electrical machine with an SMC core, we have already proposed a method to evaluate the effective permeability and iron loss of the SMC core using a cell model of one particle taking into account the nonlinear magnetic characteristics and eddy currents. However, the measured eddy current loss cannot be represented by using the proposed method. In this article, a 3-D eddy current analysis method modeling the anomalous eddy current loss due to the movement of domain walls in the cell model is developed based on the Pry and Bean magnetic domain model. The effect of the non-uniformity of the domain structure on the anomalous eddy current loss is investigated. It is shown that the measured eddy current loss can be almost represented by adding the anomalous eddy current loss to the classical one.