Motor (Motor) is a device converts electrical energy into mechanical energy. (that is, it is the use of electricity coil stator winding) to produce a rotating magnetic field and used for rotor (such as closed cage aluminum frame) magnetoelectric power for rotary torque. Motor by using the power divided into dc motor and ac motor, electric power system in most of the motor is ac motor, can be synchronous motor or induction motor (motor stator magnetic speed and rotor rotating speed is not synchronized rate).
