How Does an AC Motor Work

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The AC Motor is used in the conversion of electrical energy into mechanical energy


The standard definition for an AC Motor is an electric motor that is driven by alternating current. The AC Motor is used in the conversion of electrical energy into mechanical energy. This mechanical energy is made from utilizing the force that is exerted by the rotating magnetic fields produced by the alternating current that flows through its coils. The AC Motor is made up of two major components: the stationary stator that is on the outside and has coils supplied with AC current, and the inside rotor that is attached to the output shaft.

How Does an AC Motor Work?

The fundamental operation of an AC Motor relies on the principles of magnetism. The simple AC Motor contains a coil of wire and two fixed magnets surrounding a shaft. When an electric (AC) charge is applied to the coil of wire, it becomes an electromagnet, generating a magnetic field. Simply described, when the magnets interact, the shaft and the coil of wires begin to rotate, operating the motor.

Basic types of an AC Motor

The AC Motor comes in three different types known as Induction, Synchronous, and Industrial. These AC Motor types are determined by the rotor design used in the construction. Anaheim Automation carries all three types in its product line.

Induction AC Motors are referred to as asynchronous motors or rotating transformers. This type of AC Motor uses electromagnetic induction to power the rotating device which is usually the shaft. The rotor in Induction AC Motor products typically turns slower than the frequency that is supplied to it. Induced current is what causes the magnetic field that envelops the rotor of these motors. This Induction AC Motor is designed in one or three phases.

Synchronous AC Motor

The Synchronous Motor is typically an AC Motor that has its rotor spinning at the same rate as the alternating current that is being supplied to it. The rotor can also turn at a sub multiple of the current it is supplied. Slip rings or a permanent magnet supplied with current is what generates the magnetic field around the rotor.

AC Industrial Motors are designed for applications requiring a three-phase, high-power induction motor. The power ratings of an industrial motor exceed those of a standard single-phase AC induction motor. Anaheim Automation offers Industrial AC Motors from 220W to 2200W, in 3-Phase operation at 220VAC or 380VAC.

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