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AC Motor VS DC Motor

Apr 07, 2017

The main difference between AC motors and  DC motors can be found in the name itself for,  DC motors run on direct current as opposed to alternating current on which AC motors run. 

With direct current, energy is obtained from batteries or cells and generates a constant voltage.  This constant voltage then stimulates the steady flow of electrons in one direction.  It is this constant and precise flow of energy that makes direct current most suitable for applications that require precise and stable operation, such as speed and torque control applications.

With alternating current, energy is obtained through both AC generators and mains to generate a varying voltage.  It is because of this varying voltage that the electrons of an alternating current, unlike those of a direct current, continuously change direction, moving forward and backward.  Also in contrast to direct current, which is unable to produce voltage capable of traveling over long distances, the voltage of alternating current is safe to transfer over long distance and provide greater power, making alternating current ideal for both home and industrial applications. 

While, at first glance the difference between alternating current motors and direct current motors may appear trivial, upon further inspection, you are able to see how these seeming small differences have an enormous impact on the efficiency of your application.  When choosing between AC motor and  DC motors, you must thus consider where your power is generated from as well the level of precision needed for the application to operate effectively.  By discussing these factors with a skilled engineer,you can rest assured that you will receive the best motor for your application.