PUMP CONTROL INCLUDING THE CLEANING OR STOPPING PROCEDURE DEPENDING ON LOAD ON ENGINE Russian patent published in 2017 - IPC F04D15/02 F04D13/06 F04D7/04 

FIELD: engines and pumps.

SUBSTANCE: invention relates to a method of pump means control comprising a pump (2) with an electric motor (7), a motor (7) control unit (6) and means for monitoring at least one operating parameter from which an electric motor (7) load factor, which corresponds to the operating conditions of the pump means. When the pump (2) is in the active state, the electric motor (7) is driven in the first direction. The method comprises the steps of determining a real value of at least one operating parameter, determining whether the externally applied force exerts an influence on the motor (7) to such an extent that a critical operating state for the pump means is initiated, performing a state switching from the active state to the inactive state of the pump (2) if a critical operating state for the pump means is initiated. The state switching is performed by abruptly interrupting by the control unit (6) immediately after determining that the critical operating state of the motor drive (7) has been initiated in the noted first direction by setting the motor (7) nominal rotational speed equal to zero in the control unit (6).

EFFECT: method of pump means control improvement by analyzing the load factor of the motor and changing the operation depending on the instant operating conditions and preventing emergency shutdowns performed by the maintenance personnel.

15 cl, 7 dwg