Rotor structure to reduce rotor losses of permanent magnet electric machines

被引：0

作者：

Zhao X. ^{[1
,2
]}

Fan Y. ^{[1
]}

Xia J. ^{[2
]}

Zhang Y.-H. ^{[1
]}

机构：

[1] School of Electrical Engineering, Beijing Jiaotong University, Beijing

[2] Goldwind Science & Technology Co., Ltd., Beijing

来源：

Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2019年 / 23卷 / 02期

关键词：

Fault tolerant electric machine; Fractional-slot concentrated winding; Low-order harmonics; Modular; Permanent magnet electric machine;

D O I：

10.15938/j.emc.2019.02.008

中图分类号：

学科分类号：

摘要：

Due to excellent performance of physical, thermal and magnetic insulation capacity, single-layer fractional-slot concentrated windings are desirable to be used in surface-mounted permanent magnet fault-tolerant electric machines. However, the amplitude of low-order space harmonics produced by single-layer fractional-slot concentrated windings is high, which will cause very high eddy current losses in permanent magnets and iron losses of rotor iron core. This paper proposes a modular rotor structure to reduce rotor losses in surface-mounted permanent magnet electric machines with single-layer fractional-slot concentrated windings. The principle of the proposed structure was explained. Performance differences between the proposal and other techniques which can also reduce rotor losses were investigated by using numerical simulation. The conclusion shows that the proposed modular rotor structure can reduce rotor losses by 36% and increase the average torque 5%~10%. © 2019, Harbin University of Science and Technology Publication. All right reserved.

引用

页码：62 / 67

页数：5

共 8 条

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