Thomas L. Beck - Union Grove WI, US Robb G. Anderson - Racine WI, US Steven J. Olson - Racine WI, US
Assignee:
Unico, Inc. - Franksville WI
International Classification:
G06F 11/30 G06F 15/00 G21C 17/00
US Classification:
702182
Abstract:
A control system for the operation of a centrifugal pump which may be used for production of gas and/or oil from a well. The control system includes vector feedback model to derive values of torque and speed from signals indicative of instantaneous current and voltage drawn by the pump motor, a pump model which derives values of the fluid flow rate and the head pressure for the pump from torque and speed inputs, a pumping system model that derives from the estimated values of the pump operating parameters an estimated value of a pumping system parameter and controllers responsive to the estimated values of the pumping system parameters to control the pump to maintain fluid level at the pump input near an optimum level.
Method And System For Improving Pump Efficiency And Productivity Under Power Disturbance Conditions
Robb G. Anderson - Racine WI, US Mark E. Garlow - Kenosha WI, US Harry W. Schulz - Racine WI, US
Assignee:
Unico, Inc. - Franksville WI
International Classification:
G05D 7/00 F04B 49/06
US Classification:
700282, 417 4411
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.
Thomas L. Beck - Union Grove WI, US Robb G. Anderson - Racine WI, US Steven J. Olson - Racine WI, US
Assignee:
Unico, Inc. - Franksville WI
International Classification:
G06F 11/30 G21C 17/00
US Classification:
702182
Abstract:
A control system for the operation of a centrifugal pump which may be used for production of gas and/or oil from a well. The control system includes vector feedback model to derive values of torque and speed from signals indicative of instantaneous current and voltage drawn by the pump motor, a pump model which derives values of the fluid flow rate and the head pressure for the pump from torque and speed inputs, a pumping system model that derives from the estimated values of the pump operating parameters an estimated value of a pumping system parameter and controllers responsive to the estimated values of the pumping system parameters to control the pump to maintain fluid level at the pump input near an optimum level.
Determination And Control Of Wellbore Fluid Level, Output Flow, And Desired Pump Operating Speed, Using A Control System For A Centrifugal Pump Disposed Within The Wellbore
Robb G. Anderson - Eden Prairie MN, US Thomas L. Beck - Union Grove WI, US
Assignee:
Unico, Inc. - Franksville WI
International Classification:
G06F 11/30 G05D 9/00 G01F 15/00
US Classification:
702182, 700281, 73290 R
Abstract:
A method and apparatus for determining a fluid level and/or output flow during operation of a centrifugal pump, are provided, which may be used for production of gas and/or oil from a well, and include a vector feedback model to derive values of torque and speed from signals indicative of instantaneous current and voltage drawn by the pump motor, a pump model which derives values of the fluid flow rate and the head pressure for the pump from torque and speed inputs, a pumping system model that derives, from the estimated values of the pump operating parameters, an estimated value of fluid level and other pumping system parameters. Controllers responsive to the estimated values of the pumping system parameters control the pump to maintain fluid level at the pump input, near an optimum level, or within a safe operating range and/or output flow from the pump.
Pneumatic Biasing Of A Linear Actuator And Implementations Thereof
Robb G. Anderson - Racine WI, US James P. McCrickard - Racine WI, US Thomas L. Beck - Union Grove WI, US
Assignee:
Unico, Inc. - Franksville WI
International Classification:
F01B 13/00 F01B 9/00
US Classification:
91 61, 91451, 74 8936, 72 301, 72454, 92136
Abstract:
An improved method and apparatus are provided for constructing and operating a linear actuator, and equipment incorporating a linear actuator, by operatively connecting a pressure biasing pneumatic arrangement between the driving member and the driven member of a mechanical linear actuator for applying a unidirectional biasing force between the driving and driven members, along an axis of motion, regardless of the location or movement of the driving and driven elements with respect to one another along the axis of motion. The pneumatic biasing arrangement is also configured, connected and operated to reduce the force which must be exerted by the driving and driven members in extending and retracting the linear actuator. The pneumatic biasing arrangement may further be configured for preferentially aiding extension or retraction of the actuator.
Determination And Control Of Wellbore Fluid Level, Output Flow, And Desired Pump Operating Speed, Using A Control System For A Centrifugal Pump Disposed Within The Wellbore
Robb G. Anderson - Eden Prairie MN, US Thmas L. Beck - Union Grove WI, US
Assignee:
Unico, Inc. - Franksville WI
International Classification:
G06F 11/30 F04B 49/06 F01B 25/00
US Classification:
702182, 417 442, 415 17
Abstract:
A method and apparatus for determining a fluid level and/or output flow during operation of a centrifugal pump, are provided, which may be used for production of gas and/or oil from a well, and include a vector feedback model to derive values of torque and speed from signals indicative of instantaneous current and voltage drawn by the pump motor, a pump model which derives values of the fluid flow rate and the head pressure for the pump from torque and speed inputs, a pumping system model that derives, from the estimated values of the pump operating parameters, an estimated value of fluid level and other pumping system parameters. Controllers responsive to the estimated values of the pumping system parameters control the pump to maintain fluid level at the pump input, near an optimum level, or within a safe operating range and/or output flow from the pump.
Pneumatic Biasing Of A Linear Actuator And Implementations Thereof
An improved method and apparatus are provided for constructing and operating a linear actuator, and equipment incorporating a linear actuator, by operatively connecting a pressure biasing pneumatic arrangement between the driving member and the driven member of a mechanical linear actuator for applying a unidirectional biasing force between the driving and driven members, along an axis of motion, regardless of the location or movement of the driving and driven elements with respect to one another along the axis of motion. The pneumatic biasing arrangement is also configured, connected and operated to reduce the force which must be exerted by the driving and driven members in extending and retracting the linear actuator. The pneumatic biasing arrangement may further be configured for preferentially aiding extension or retraction of the actuator.
Thomas L. Beck - Union Grove WI, US Robb G. Anderson - Eden Prairie MN, US Ronald G. Peterson - Racine WI, US Michael A. MacDonald - Racine WI, US
Assignee:
Unico, Inc. - Franksville WI
International Classification:
F04B 17/00
US Classification:
417415
Abstract:
An apparatus and method for pumping fluids, such as water and/or hydrocarbons, from a subterranean formation or reservoir, include a linear rod pump having a mechanical rack and pinion drive arrangement, adapted for attachment to a pumping mechanism, such as the polished rod at the top of a rod string in a hydrocarbon well. The rack gear, of the rack and pinion drive arrangement, is adapted for connection to, and movement with, the polished rod. The pinion gear does not translate with the rack gear, and is driven by a reversible motor for affecting up and down reciprocating motion of the rack gear and pumping mechanism. Some forms of the invention include a compressible gas counter-balance arrangement. Some forms of the invention include an electronic drive configured for dealing with electric power generated by the motor during a portion of the pumping cycle.
MTS Systems since Feb 2013
Sr. Software Engineer
Eaton Hydraulics Jan 2010 - Feb 2013
Lead Software Engineer
Sauer-Danfoss Nov 2006 - Dec 2009
Senior Engineer (Systems)
Unico, Inc. Sep 2000 - Oct 2006
R&D Systems Development Engineer
McClean Anderson Sep 1994 - Sep 2000
Sr. Mechanical & Control Engineer
Education:
University of Wisconsin-Madison 1992 - 1994
MSME, Mechanical Engineering
University of Minnesota-Twin Cities 1989 - 1992
BME, Mechanical Engineering
St. Cloud State University 1987 - 1989
Skills:
R&D Simulink Matlab Embedded Software C C++ Systems Engineering Testing Labview Software Development Software Engineering FMEA Visual Studio Agile Embedded Systems Engineering Windows Automation Product Development Simulation System Design Electronics Programming Automotive Requirements Analysis Electrical Engineering
MTS Systems since Feb 2013
Sr. Software Engineer
Eaton Hydraulics Jan 2010 - Feb 2013
Lead Software Engineer
Sauer-Danfoss Nov 2006 - Dec 2009
Senior Engineer (Systems)
Unico, Inc. Sep 2000 - Oct 2006
R&D Systems Development Engineer
McClean Anderson Sep 1994 - Sep 2000
Sr. Mechanical & Control Engineer
Education:
University of Wisconsin-Madison 1992 - 1994
MSME, Mechanical Engineering
University of Minnesota-Twin Cities 1989 - 1992
BME, Mechanical Engineering
St. Cloud State University 1987 - 1989
Skills:
Embedded Software Embedded Systems Systems Engineering Product Development Electronics Engineering Control Systems Design Simulink Automation Testing Matlab C Electrical Engineering Software Development Simulations Programming Requirements Analysis Fmea R&D Software Engineering C++ Labview Visual Studio Agile Windows Simulation System Design Automotive C# Project Management Motor Control
Interests:
Social Services Children Environment Education Poverty Alleviation Science and Technology Disaster and Humanitarian Relief Health