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6SE6440-2UD34-5FB1
6SE6440-2UD34-5FB1
串激电机工作原理同直流电机,左手定则和右手定则就能完全解释它的原理。
串激电动机是一种基于电磁感应原理工作的电动机,其工作原理可以简单地概括为电磁转动原理。
串激电动机由电枢和励磁绕组两部分组成,其中电枢绕组接入外部电源,励磁绕组则接入电枢绕组上。当外部电源加电时,电枢绕组内会产生磁场,这个磁场会与励磁绕组内的磁场相互作用,从而产生一个电磁转矩。这个电磁转矩可以使电机开始转动。
在电机运行的过程中,由于电枢绕组的旋转运动,其内部磁场也会随之旋转,而励磁绕组的磁场是恒定的,所以这两个磁场之间会产生相对运动,进而产生感应电动势。这个感应电动势的方向与电枢绕组中电流的方向相反,从而降低了电枢绕组的总电动势,这种现象被称为“反电动势”。
由于反电动势与电机的转速有关,因此随着电机的转速增加,反电动势也会相应增加,终与外部电源的电动势相等。在这种情况下,电枢绕组的总电动势为零,电机就处于稳态运行状态。
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