Why A DC Motor Is Still The Best Option In Many Applications

by | Sep 16, 2019 | Electric Motor Store

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There is a constant debate between engineers and OEMs about the value in choosing an AC or a DC motor. Both of these motor options can be used in most applications, so is more likely to be a matter of choosing the motor that is best suited to the task and that offers the lowest cost, lowest maintenance, and the highest efficiency and life cycle.

The Best Applications for AC Motors

AC motors are seen as the best match for an application when there is a concern about a high power demand for the startup of the motor. The design of the AC motor creates only a low power demand, which makes them suitable for small to large types of applications.

In addition, the AC motor has lower maintenance requirements than the same size and power in a DC motor. This makes them a better choice when higher horsepower requirements are coupled with the ease of access to the motor in the application.

The Benefits of DC Motors

The most important factor in choosing a DC motor for many applications, it the advantage of a higher starting torque as compared to the AC motors. They are also designed to start up and stop quickly, and to be easier to control for variable speed types of applications.

The choice of a DC motor is also indicated when there is a variable voltage input on the system and access to main electrical supplies is difficult. These are the motors most often selected when lower horsepower, reversing the motor and even the option for truck-mounted or portable motors is a key consideration.

In general, DC is also the lowest cost option in industrial motors. They are durable and rugged, but they do have the additional consideration of regular maintenance requirements for optimal performance and efficiency.