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Q&A about ac motors and induction motors

What is single phase AC ?
Single phase induction engine is an AC engine were electricity is converted to mechanical energy to perform some physical task. This induction engine requires only 1 power phase for their proper operation. They are commonly found in low power applications, in household and industrial use.

How really does an AC motor work single phase?
The stator of a single phase induction motor is wound with single phase winding. When the stator is single phase ac motor china usually fed with a single phase supply, it produces alternating flux (which alternates along one space axis only). Alternating flux acting on a squirrel cage rotor cannot produce rotation, only revolving flux can.

Can a single phase motor run without a capacitor?
Single-phase induction motors are not self-starting without an auxiliary stator winding driven by an out of stage current of near 90°. Once started the auxiliary winding can be optional. The auxiliary winding of a long lasting split capacitor motor has a capacitor in series with it during starting and running.

How can you reverse a single phase motor?
Once started, a single phase induction motor will certainly happily run in possibly direction. To reverse it, we need to change the direction of the rotating magnetic field produced by the primary and starter windings. Which is achieved by reversing the polarity of the starter winding.


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