定子槽式永磁电机消磁问题的分析与对策

The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020) Pub Date : 1900-01-01 DOI:10.1049/icp.2021.1015

H. Qu, Z.Q. Zhu, S. Cai, L. Huang

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引用次数: 0

摘要

定子槽式永磁(PM)电机在发电机不受控制的运行下，由于定子槽式永磁磁通在定子内短路，因此具有固有的容错性。然而，由于pm放置在槽开口中，并且与高磁导率铁芯相邻，切向磁通分量可能导致磁体部分退磁，特别是在重载条件下。本文研究了转子和定子齿宽、永磁形状、转子齿形和齿尖对永磁消磁的影响。结果表明，通过对永磁转子进行整形或将永磁转子移离气隙而不使用齿尖，可以在不降低转矩的情况下解决永磁转子的消磁问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Analysis and Mitigation of Demagnetization Issue in Stator Slot PM Machines

The Stator slot permanent magnet (PM) machine with PMs placed circumferentially in the slot openings is inherently fault-tolerant under the uncontrolled generator operation since the PM flux is short-circuited within the stator. However, as the PMs are placed in the slot openings and adjacent to the high-permeability iron core, the tangential flux component may cause partial demagnetization of magnets, especially under heavy load condition. In this paper, the influence of the rotor and stator tooth widths, the PM shape, the rotor tooth shape, and the tooth tips on the PM demagnetization is investigated. The results show that by shaping the PMs or moving the PMs away from the airgap without using tooth tip, the demagnetization problem can be solved without reduction in torque.

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The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)

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