Elecronic motor torque control for positive displacement pumps

Details Elecronic motor torque control for positive displacement pumps Elecronic motor torque control for positive displacement pumps

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 49/06 (2006.01) F04B 11/00 (2006.01) F04B 49/20 (2006.01)

Patent

CA 2441361

Disclosure is made of a method for electronic polar attenuation of torque profile for positive displacement pumps by a processor where the attenuated torque profile is compared with the shaft displacement angle of the pump input shaft. The processor then signals a motor to power a pump with the result of pumping at a constant pressure at the full range of the designed system flow volume. In addition to the attenuated torque profile, the processor can also account for the response time of the pump drive, the motor inductive reactance, system inertia, application characteristics of the pump, and regenerative energy during deceleration of the pump.

L'invention porte sur un procédé d'atténuation polaire électronique d'un profil de couple pour pompes volumétriques. Dans ce procédé, un processeur compare le profil du couple atténué avec l'angle de décalage de l'arbre d'entrée de la pompe. Le processeur envoie alors au moteur le signal d'actionner la pompe, le pompage s'effectuant à pression constante pour la totalité du volume d'écoulement du système défini. Outre le profil du couple atténué, le processeur peut également déterminer le temps de réponse de la commande de la pompe, la réactance inductive du moteur, l'inertie du système, les caractéristiques d'application de la pompe et l'énergie de récupération lors de la décélération de la pompe.

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