1) When the bike motor kit access three-phase three-phase AC power (the difference of 120 electrical degrees), the three-phase rotor winding generate current flow through the three-phase symmetrical three-phase magnet force (the rotor rotating magnetic momentum) and produce rotating magnetic field to synchronize the rotor and rotor speed no along the inner circle space for clockwise rotation.
(2) The conductor of the rotating magnetic field and the rotor has a relatively cutting exercise, according to the principle of electromagnetic induction, the rotor conductors (rotor winding is closed channels) induced electromotive force and induced current (induced electromotive force in the direction with the right-hand rule to determine).
(3) According to the electromagnetic force law, the role of the EMF, the rotor conductors and the induced electromotive force will produce basically the same as the direction of the induced current. Current-carrying conductors of the rotor magnetic field generated in the rotor magnetic field by the electromagnetic force (with the left hand direction of the force is determined), electromagnetic force on the rotor shaft to form the electromagnetic torque, the rotor drive motor rotating magnetic field along the direction of rotation when the motor shaft with a mechanical load, then out the output mechanical energy. As part of the flux ring is not short-circuit short-circuit ring than the leading part of the flux, the direction of motor rotation direction with the same rotating magnetic field.
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