A Brushless DC (BLDC) motor is a Permanent Magnet Synchronous Motor with unique back EMF waveform that allows them to behave similarly to a brushed DC motor. Some confusion can arise from the name, as a brushless DC motor does not directly operate off a DC voltage source. However, the basic principle of operation is similar to a DC motor.
A Brushless DC Motor has:
● A rotor with permanent magnets and a stator with windings. ● A BLDC motor is essentially a DC motor turned inside out . ● Brushes and commutator have been eliminated and the windings are connected to the control electronics . ● Control electronics replace the function of the commutator and energize the proper winding . ● Windings are energized in a pattern which rotates around the stator . ● The energized stator winding leads the rotor magnet and switches just as the rotor aligns with the stator .
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