Motor (Motors) is a kind of equipment for electrical energy into mechanical energy. It is the use of the electric coil (that is, the stator winding) to produce a rotating magnetic field and act on the rotor (such as the squirrel cage closed aluminum frame) form a magnetoelectric dynamic torque. Motor according to the using power divided into DC motor and AC motor, motor power system are most of AC motor, can be synchronous or asynchronous motor (motor rotation speed of motor stator magnetic field and rotor speed does not keep synchronous speed). Mainly by the motor stator and rotor, direction and current direction and magnetic power wire in a magnetic field force motion sensing line (the direction of the magnetic field direction). The working principle of the motor by the force of magnetic field on the current role of the motor rotation
