A brushless hub motor has no brushes, it mainly uses electronic commutation to turn the magnetic poles. Since no parts inside the brushless hub are in contact with each other, the parts other than the bearings will not wear out, greatly enhancing its durability. Hall sensors are placed between the coils of the numerous hubs, and the coils and Hall sensors track the rotor position and send signals to the controller. The controller is a precision instrument that makes the brushless hub run. This controller can control the energization sequence of the stator windings according to the position sensing signal and can also provide power to the coil windings according to their position in motion. When the current passes through one winding, the controller passes it to the other winding, which creates a rotating magnetic field that turns the rotor.
Brushless hub motors typically consist of six or more individual coils and electronic circuitry instead of commutators and brushes. The circuit turns power on and off in the coils, creating a force in each coil that turns the motor.
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