The motors base their operation on obtaining a rotating magnetic field. Within this rotating field there may be an electromagnet, which rotates at the same speed as the field. In this case we’ll have a synchronous motor. A second possibility is that an induction windings are present inside the field, which gives rise to an electrical current and therefore the force of Lorentz. The rotation will be slower than the rotary field, which is why the motor is called asynchronous or induction motor.

Regarding the supply current, we will have single-phase and three-phase motors. Similar to direct current motors, alternating current motors consist of a fixed part called a stator or inductor, equipped with magnetic field generating coils, and a rotor or inductor, also known as armature. Take a look at this text if you are interested or want to buy shaded pole motor.

(más…)