No matter the application, when it comes to motor technology there are several options. Within DC technology one of the first—and biggest—decisions is whether to choose a brushed or brushless DC motor.
More and more designers are choosing brushless DC (BLDC) motors for a variety of reasons, as this option has become more economically feasible of late. There are a number of benefits to BLDC motors; let’s examine why.
Brushless vs. Brushed DC Motors
Before noting the advantages of a BLDC motor, it’s important to note the distinctions. A BLDC motor is an electric motor which is must be commutated by a drive (control) – power is applied sequentially by the drive to three phases of motor windings whose resulting magnetic field opposes permanent magnets mounted on the rotor. Alternatively, brushed motors use brushes and a commutator to mechanically control the rotation; the windings are on the rotor and the permanent magnets are fixed.