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191问答库 > 三相异步电动机常用的制动方法有__________和__________两种。

三相异步电动机常用的制动方法有和两种。

2025-03-16 17:25:50

推荐回答（2个）

回答1：

三相异步电动机常用的制动方法有能耗制动和反接制动两种。
一、能耗制动的方法是将定子绕组从三相交流电源上断开，然后立即加上直流励磁，转子由于惯性继续旋转而切割磁力线并感生电流。感生电流再与磁场作用产生与旋转方向相反的力矩，起制动的作用。此种方法将转子的动能转化为电能并消耗在转子电阻上。故称能耗制动。
二、反接制动制动时将电动机的任意两相定子绕组电源对调，形成制动力矩，使转速下降。当转速接近于零时，快速切断制动回路的控制电源。以免变成反转。

回答2：

回馈制动，反接制动

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