The working principle of dc brushless dc motor encyclopedia | | brushless dc motor brushless dc motor in the south of anhui's official website

Working principle of the dc brushless dc motor hair hair dc brushless dc motor working principle is to make the armature coils of alternating emf induction, the commutator with brush commutation function, make it from the brush end into the principle of dc electromotive force. The direction of induction electromotive force according to the right-hand rule to determine (Magnetic induction line point to palm, thumb conductor movement direction, the other four refers to the point to is the direction of induction electromotive force in the conductor)。 The working principle of dc motor with the left hand rule to determine the conductor stress direction. This a pair of electromagnetic force applied to the armature formed a torque, the torque in the rotating brushless dc motor is called electromagnetic torque, torque direction is counterclockwise, trying to make the armature counterclockwise rotation. If the electromagnetic torque can overcome the armature resistance torque (For example, caused by friction resistance torque and other load torque)The armature can spin counterclockwise direction.