Scaling Effect on Inter-Turn Short-Circuit of PM Machines for Wind Power Application

2021 IEEE International Electric Machines & Drives Conference (IEMDC) Pub Date : 2021-05-17 DOI:10.1109/IEMDC47953.2021.9449606

Z. Mei, G. Li, Z. Zhu, R. Clark, A. Thomas, Z. Azar

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引用次数: 3

Abstract

This paper proposes a general analytical model of surface-mounted permanent magnet (SPM) machines with series-connected coils under inter-turn short circuit (ITSC) fault. One prominent feature of this model is that the air-gap and slot-leakage components of inductances under fault are calculated separately, which consider the influences of pole number and spatial distribution of coils. In the model, winding function approach (WFA) is used to calculate the air-gap inductance components by considering all space harmonics whilst slot-leakage inductance components are obtained by using slot permeance method. The proposed faulty machine model built in Matlab/Simulink is validated by time stepping FE simulations for a 3kW 96-slot 32-pole SPM machine. The model is suitable for the fast evaluation of fault performance of SPM machines and the development of faulty model considering core saturation if necessary. Other power ratings (0.5MW and 3MW) have also been investigated to study scaling effect on machine fault-tolerant capability.

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风力发电用永磁电机匝间短路的尺度效应

提出了一种具有串联线圈的表面贴装永磁电机匝间短路故障的通用解析模型。该模型的一个显著特点是分别计算故障时电感的气隙分量和漏缝分量，同时考虑了极数和线圈空间分布的影响。该模型采用考虑所有空间谐波的绕组函数法计算气隙电感分量，采用槽导率法计算槽漏电感分量。在Matlab/Simulink中建立了故障机床模型，并对3kW 96槽32极SPM机床进行了时间步进有限元仿真验证。该模型适用于SPM机床故障性能的快速评估，并在必要时建立考虑铁心饱和度的故障模型。还研究了其他额定功率(0.5MW和3MW)，以研究对机器容错能力的缩放效应。

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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来源期刊

2021 IEEE International Electric Machines & Drives Conference (IEMDC)

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