An electric motor is an electrical device that functions on the common physics fundamental of converting electrical energy into mechanical energy. The functioning of these motors runs on the law of electromagnetism which focuses on the attraction and repulsion forces between the two particles. Therefore, the functioning of a motor depends on how strong the magnetic fields are in them. The stronger the magnetic fields are, the stronger will be the motor’s functionality.
Motors are Categorised in Different Forms
Electric motors are segmented according to their shapes and sizes. These can be as big as used for the propulsion of huge ships to as small as the ones found in watches and power tools. There are medium-sized motors as well that are used for industrial purposes. An electric motor is made up of parts like an armature, a rotor and axle. It also includes a DC power supply, commutator, field magnet, rotor and field magnet. These parts make up an electric motor device. Whether small or large, an electric motor functions on the prime principle of A/C and D/C power supply.
Types of Electric Motors
There has been an improvement in the mechanical aspect of electric motors ever since the market for electrical appliances has flourished. The market offers its customers usually two types of electric motors, direct current electric motors, and alternate current electric motors respectively. But, Americans Emily and Thomas Davenport were the ones who created the first direct electric motor. Such motors were used for commercial purposes but were unsuccessful due to high-cost factors. Other examples of direct current motor devices are brushless DC motors and stepping motors.
However, there are other types of electric motors that run without a winding field. These motors are permanent magnet motors that function on the basis of permanent magnets.
How does an Electric Motor function?
An electric motor functions on the basic principle of electromagnetism. Therefore, it runs using attractive and repulsive forces of a magnet that further gives rise to a torque on the shaft of the motor. The components of a motor like a rotor and a stator form a magnetic field between them making the motor run smoothly.