A braking controller of three-phase permanent magnetic...

F - Mech Eng,Light,Heat,Weapons – 04 – B

Patent

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F04B 49/06 (2006.01)

Patent

CA 2671381

A braking controller of a three-phase permanent magnetic brushless DC motor for directly driving a screw pump includes a detection circuit for detecting power supply states of the three-phase permanent magnetic brushless DC motor and a braking circuit for controlling the braking startup according to the power supply states of the three-phase permanent magnetic brushless DC motor. When the motor is supplied with power, the braking circuit is cut off. When the motor is not supplied with power and the screw pump drives the motor to reverse, the braking circuit starts up.

L'invention concerne un module de commande de freinage d'un moteur à courant continu sans collecteur, à aimants permanents et à trois phases entraînant directement une pompe à vis. Le module de commande comporte un circuit de détection conçu pour détecter des états d'alimentation du moteur à courant continu sans collecteur, à aimants permanents et à trois phases, et un circuit de freinage conçu pour commander l'activation du freinage en fonction des états d'alimentation du moteur. Lorsque le moteur est alimenté, le circuit de freinage est coupé. Lorsque le moteur n'est pas alimenté et la pompe à vis entraîne le moteur en sens inverse, le circuit de freinage est activé.

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