The motor works by the periodic reversal of the current running through these windings .

电动机的工作原理是流经线圈的电流方向的周期性改变。

Modern ac induction motors usually have three ( or more ) sets of stator windings , which smooths things out and allows more torque to be generated .

现代交流感应发动机通常有三组（或更多）定子线圈，使各程序平稳，并允许生成更多扭转力。

Modern induction motors usually have three ( or more ) sets of stator windings , each using a different phase of the alternating current being applied .

现代的感应电动机通常具有三组（或者更多）的定子绕组，每组各自使用不同相位的交流电来驱动。

Over the past year , the price of neodymium has quadrupled , as electric motors and generators that use permanent magnets instead of electromagnetic windings in their rotors have proliferated .

在去年，随着发动机和发电机弃用电磁线圈改用永磁铁的数量激增，钕的价格翻了两番。

An alternating current applied to the stator 's windings creates a rotating magnetic field , while simultaneously inducing a current in the separate conductors attached to the rotor .

交流电通过定子线圈创造旋转磁场，导致镶在转子上的独立导体同时产生感应电流。