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笼型感应电动机断条故障前后转子电磁力计算及结构静力学分析

, PP. 164-171

Keywords: 感应电动机,断条故障,有限元法,电磁力,结构静力学,故障形变

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Abstract:

以Y802-2型笼型感应电动机为例,对转子断条故障时的转子电磁应力及结构静力学进行研究。以二维瞬态磁场结果为基础,结合麦克斯韦张量法及洛伦兹力原理,计算得到转子所受磁应力,并给出故障前后转子磁应力随时间的变化规律,此外通过将计算所得转矩均值与实验均值相比较,验证了该电磁力计算结果的准确性。以所得电磁力为载荷,进行电动机稳态情况时转子结构静力学的研究,得到转子故障形变分布。根据故障前后转子电磁力及形变位移的变化可推测出断条故障的进一步演化趋势。

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