System and method for controlling pump cavitation and blockage
AssigneeReliance Electric Technologies, LLC
InventorsFrederick M. Discenzo, Dukki Chung, Joseph K. Zevchek
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Abstract
A pump control system and a controller therefor are disclosed which operate a motorized pump in a controlled fashion. The controller provides a control signal to a motor drive according to a setpoint or according to a cavitation signal from a cavitation detection component in the controller. If the cavitation detection component determines that pump cavitation is likely or suspected, the controller may operate the pump motor according to the cavitation signal, in order to reduce or eliminate the cavitation condition, before resuming normal control according to the setpoint.
Claims39
A pump control system for operating a pump driven by a motor in a controlled fashion, comprising:
- a motor drive providing electric power to operate the motor in a controlled fashion according to a motor control signal;
- and
- a controller comprising a cavitation detection component operatively connected to the pump to detect cavitation in the pump;
- wherein the controller provides the control signal to the motor drive according to one of a setpoint and a cavitation signal from the cavitation detection component according to detected cavitation in the pump.
A controller for providing a control signal to a motor drive to operate a motorized pump in a controlled fashion, comprising:
- a cavitation detection component operatively connected to the pump to detect cavitation in the pump;
- wherein the controller provides the control signal to the motor drive according to one of a setpoint and a cavitation signal from the cavitation detection component according to detected cavitation in the pump.
A method of controlling a motorized pump, comprising:
- detecting cavitation in the pump;
- controlling the pump according to a process setpoint if no cavitation is detected in the pump;
- and
- controlling the pump according to a cavitation signal if cavitation is detected in the pump.
A system for controlling a motorized pump, comprising:
- means for detecting cavitation in the pump;
- and
- means for controlling the pump according to a process setpoint if no cavitation is detected in the pump, and controlling the pump according to a cavitation signal if cavitation is detected in the pump.
Dependencies are inferred from the claim text.