Electrical motors construction

Electric motors are used in many applications and industries. They are used in electric cars, elevators, fans, pumps, and many other devices. The construction of an electric motor can be done using the rotor, bearings, stator, air gap, windings, commutator, etc. The rotor is the moving part of the motor and its main function is to rotate the shaft for generating mechanical power. The stator is the fixed part of the motor and it consists of laminations of silicon steel. The stator has two electrical components: magnets set and an armature. One of them is attached to the stator and the other to the rotor, together making a magnetic circuit.

Electric motors rely on principles of magnetism. A coil of wire carrying a current in a magnetic field experiences a force that tends to make it rotate. This effect can be used to make an electric motor. Most often, copper windings are powered by an electric current, generating a magnetic field. This interacts with a separate magnetic field – often created by an array of permanent magnets. The interaction between the two fields causes the rotor to turn.