Method and system for improving pump efficiency and productivity under power disturbance conditions
US7437215B2 · kind B2 · utility
54Cited by
4References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2005 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Jun 21, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P80/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.