Significance And Types Of Brushless DC Motors

A brushless DC motor is an electrical motor which is powered by direct current. Unlike the brush DC motors, these equipments do not require the use of brushes to operate. It functions with the help of a controller through a six step electronic commutation system. These motors do not include any carbon brushes.

There are mainly two types of brushless dc motor which include the inrunner and the outrunner. The only difference between these two motors is that there are permanent motors located in the inner part of the stationary electromagnets of an inrunner motor whereas the permanent magnets are located on the outer surfaces of the outrunner motors.

Major Differences Between Types Of DC Motors:

The inrunner motors are mainly used when high speeds are essential. As it spins faster, it is considered to be more efficient than the outrunner motors. However, the parts of the inrunner motors are susceptible to failures due to the presence of the gearbox. The main features of the inrunner motors include low torque, high RPM, noise and gearbox requirement.

Brushless DC Motors

Brushless DC Motors

The outrunner motors produce more torque although it is quiet. It spins slowly and it is quite easy to use. Some of the most important features of these motors include high torque, low RPM and quietness.

The prices of brushless DC motors have fallen in the past several years due to the introduction of various innovative designs and materials. It has been coupled with various advantageous features. It is used in various applications due to its beneficial features. It is used in various medical applications, automotives, instrumentation, aerospace, factory automation equipment, military fields and so forth.

DC Motors

DC Motors

One of the greatest advantages of brushless DC motors is the absence of brushes. The brush DC motors include carbon brushes which need to be replaced frequently which can be quite expensive in the long run. Another benefit of using these motors is its lack of noise. It also produces fewer sparks compared to the other types of motors. These motors are smaller and lighter compared to the brush DC motors. These motors also require less maintenance and it is clean and powerful.


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