How to Drive a brushless E Scooter Motor

Papabravo

Joined Feb 24, 2006
22,058
Driving a brushless motor usually involves having a knowledge of the rotor position. When you know the rotor position you can energize the windings in the proper sequences so the applied torque will rotate the shaft in the correct direction. As the shaft begins to move you need to know when to turn off the windings you have energized so they do not retard the motion of the shaft and then you need to energize the next set to continue the application of torque in the correct direction. Without the precise knowledge of the rotor position you have zero chance of commutating the phases in the correct sequence at the correct time.

In short, a brushless motor is more complicated than you might imagine.
 
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