Method and system for improving pump efficiency and...

Details Method and system for improving pump efficiency and... Method and system for improving pump efficiency and...

2005-06-17

2008-10-14

DeCady, Albert (Department: 2121)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Mechanical control system

C417S044110

Reexamination Certificate

active

07437215

ABSTRACT:
A system for controlling operation of a progressing cavity pump to maintain the motor operating under power disturbance conditions. For a blackout condition, a backspin controller uses regenerative power to provide controlled deceleration of the pump, counteracting backspin and preventing backspinning freely. For a brownout condition, a power dip controller weakens the motor field to maximize pump production consistent with reduced input power availability. For a phase loss or voltage imbalance condition, a phase loss controller reduces motor power output to keep drive system output power at or below single phase capacity.

REFERENCES:
patent: 3593103 (1971-07-01), Chandler et al.
patent: 6313600 (2001-11-01), Hammond et al.
patent: 6686718 (2004-02-01), Jadric et al.
patent: 7330779 (2008-02-01), Schulz

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