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三相电压不平衡,对异步电动机有何影响?

问答题
2022-02-24 05:21
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正确答案

假如电源的三相电压不平衡,会使电动机电磁转矩减小,出力不够,同时会使电机定、转子绕组电流增加,因而引起额外发热。
另一方面,电动机的电磁噪音也会增加。
因此,在三相电源电压严重不平衡的情况下。是不允许电动机投入运行的。


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