Formulation and mixing conditions of magnetic composite materials used for magnetic wedges in an interior permanent magnet synchronous motor

IF 0.4 4区 工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Electrical Engineering in Japan Pub Date : 2023-06-30 DOI:10.1002/eej.23430
Manabu Horiuchi, Ryo Yoshida, Masami Nirei, Mitsuhide Sato, Tsutomu Mizuno
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Abstract

An interior permanent magnet synchronous motor (IPMSM) is characterized by its high efficiency. However, torque ripple and loss occur because of the spatial harmonics generated by air-gap permeance fluctuations. This study clarified that slot harmonic components can be suppressed by inserting magnetic wedges made of magnetic composite material in the slot opening of an IPMSM. First, the authors examined the torque and loss characteristics by varying relative permeability and saturation magnetic flux density of magnetic wedges using finite element analysis (FEA). Results indicated that the torque ripple and loss could be suppressed when the relative permeability of the magnetic wedge was μr = 10 to 22 and the saturation magnetic flux density was Bs = 0.5 to 0.75 T. Furthermore, the authors produced magnetic composite materials made of various soft magnetic material powders and examined their magnetic properties and viscosities. Results showed that a magnetic composite material with optimal magnetic properties and injectable viscosity could be manufactured using Fe-Si-Al with a low volume fraction.

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内装永磁同步电机磁楔用磁性复合材料的配方和混合条件
一种内装式永磁同步电动机(IPMSM)具有高效率的特点。然而,由于气隙磁导率波动产生的空间谐波,会产生转矩脉动和损失。这项研究表明,可以通过在IPMSM的缝隙中插入由磁性复合材料制成的磁性楔来抑制缝隙谐波分量。首先,作者使用有限元分析(FEA)通过改变磁楔的相对磁导率和饱和磁通密度来检查转矩和损耗特性。结果表明,当磁楔的相对磁导率为μr=10~22,饱和磁通密度为Bs=0.5~0.75T时,可以抑制转矩脉动和转矩损失。结果表明,使用低体积分数的Fe-Si-Al可以制备出具有最佳磁性和可注射粘度的磁性复合材料。
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来源期刊
Electrical Engineering in Japan
Electrical Engineering in Japan 工程技术-工程:电子与电气
CiteScore
0.80
自引率
0.00%
发文量
51
审稿时长
4-8 weeks
期刊介绍: Electrical Engineering in Japan (EEJ) is an official journal of the Institute of Electrical Engineers of Japan (IEEJ). This authoritative journal is a translation of the Transactions of the Institute of Electrical Engineers of Japan. It publishes 16 issues a year on original research findings in Electrical Engineering with special focus on the science, technology and applications of electric power, such as power generation, transmission and conversion, electric railways (including magnetic levitation devices), motors, switching, power economics.
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