Induction Motor Action
感应电机作用
Induction motors use shorted wire loops on a rotating armature and obtain their torque from currents induced in these loops by the changing magnetic field produced in the stator (stationary) coils.
感应电机使用在旋转转子上的短路线圈，其扭矩来自定子（静止）线圈中变化的磁场在这些线圈中感应产生的电流。
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At the moment illustrated, the current in the stator coil is in the direction shown and increasing. The induced voltage in the coil shown drives current and results in a clockwise torque. 此时，定子线圈中的电流方向如图所示，并且正在增加。所示线圈中的感应电压驱动电流，产生顺时针方向的力矩。
Note that this simplified motor will turn once it is started in motion, but has no starting torque. Various techniques are used to produce some asymmetry in the fields to give the motor a starting torque. 需要注意的是，这种简化电机一旦开始运动就会转动一次，但没有启动转矩。为给电机提供启动转矩，会采用各种方法产生磁场的不对称性。
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| Simple induction motor
简单的感应电机 |
Magnetic force concepts
索引 磁力概念
| HyperPhysics***** Electricity and Magnetism
HyperPhysics ***** 电学和磁学 | R Nave |
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