Our last blog post was a look at brushed DC motors and we briefly mentioned in that post about the other kind; brushless motors. This blog takes a look at brushless DC motors so that you will know the differences between the two.
Brushless DC motors use a rotating permanent magnet or a soft magnetic core in the rotor combined with stationary electrical magnets. The next part is a motor controller which converts the direct current (DC) to an alternating current (AC). Compared with a brushed motor, a brushless DC motor is simpler in design because it doesn’t transfer power from outside the motor to the spinning rotor and therefore eliminates the complications of this transfer process.
The benefits of using a brushless motor are that they last a long time, are very efficient and only require a small amount of maintenance. The disadvantages are that there is an initial high cost and the controls for the motor speeds are more complicated. Another name used to refer to these kinds of motors is synchronous motors.
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