[특허]Energy saving system and method for devices with rotating or reciprocating masses

[미국특허] Energy saving system and method for devices with rotating or reciprocating masses 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02P-003/18 H02P-023/00 H02P-025/00 H02P-027/00
출원번호	US-0451041 (2012-04-19)
등록번호	US-8698447 (2014-04-15)
발명자 / 주소	Lumsden, John L. Kelley, Paul H. Venkataraman, Vasan
출원인 / 주소	The Powerwise Group, Inc.
대리인 / 주소	Novak Druce Connolly Bove + Quigg LLP
인용정보	피인용 횟수 : 2 인용 특허 : 248

초록 ▼

A system and method are provided for reducing the energy consumed by a pump jack electric motor by reducing the supply voltage to the motor when the motor would be generating energy in open loop mode. By substantially eliminating the energy generation mode, the braking action of the utility grid in limiting the acceleration of the motor and system that would otherwise occur is substantially removed. The motor and system will speed up, allowing the natural kinetic energy of the cyclic motion to perform part of the pumping action.

대표청구항 ▼

1. A method of saving energy for a pump jack with a counterweight disposed with a well, comprising the steps of: supplying a line voltage and current to an electric motor connected with the pump jack during a first time segment;rotating the pump jack counterweight with the electric motor during the first time segment;observing the phase angle between the line voltage and current supplied to the electric motor during the first time segment;comparing the observed phase angle with a target phase angle during the first time segment;switching off the line voltage and current to the electric motor when the observed phase angle is greater than the target phase angle;monitoring a generated motor voltage of the electric motor during a second time segment initiated by the switching off of the line voltage and current to the electric motor;determining a period of the generated motor voltage of the electric motor during the second time segment;determining a period of the line voltage during the second time segment;comparing the period of the generated motor voltage during the second time segment with the period of the line voltage during the second time segment; andswitching on the line voltage and current to the electric motor when the period of the generated motor voltage becomes substantially equal to the period of the line voltage. 2. The method of claim 1, further comprising the step of: moving a tubular string connected with the pump jack in a substantially vertical direction in the well, wherein the step of switching off causes said tubular string to move faster than said tubular string would move if there were no step of switching off. 3. The method of claim 1, wherein the step of switching off causes the pump jack counterweight to rotate faster than the counterweight would rotate if there were no step of switching off. 4. The method of claim 1, wherein the step of switching off causes said electric motor to rotate faster than said electric motor would rotate if there were no step of switching off. 5. The method of claim 1, wherein said target phase angle is 90 degrees. 6. The method of claim 1, wherein said step of monitoring is performed with a microprocessor. 7. The method of claim 1, wherein said step of switching on occurs at a volts zero crossing point. 8. A method of saving energy for a pump jack with a counterweight disposed with a well, comprising the steps of: supplying an electric utility grid voltage and current to an electric motor connected with the pump jack during a first time segment;rotating the pump jack counterweight with said electric motor during said first time segment;observing the phase angle between the electric utility grid voltage and current supplied to said electric motor during said first time segment;comparing the observed phase angle with a target phase angle during said first time segment;switching off said electric utility grid voltage and current to said electric motor when the observed motor phase angle is greater than the target phase angle;monitoring an electric motor voltage across said motor during a second time segment after the step of switching off;rotating the pump jack counterweight during said second time segment and causing a cyclic period of said electric motor voltage across said electric motor to be shorter than a cyclic period of said electric utility grid voltage;comparing said cyclic period of said electric motor voltage across said motor with said cyclic period of said electric utility grid voltage during said second time segment; andswitching on said electric utility grid voltage and current to said electric motor when said cyclic period of said electric motor voltage returns to substantially equal to said cyclic period of said electric utility grid voltage. 9. The method of claim 8, further comprising the step of: moving a tubular string connected with the pump jack in a substantially vertical direction in the well, wherein the step of switching off causes said tubular string to move faster than said tubular string would move if there were no step of switching off. 10. The method of claim 8, wherein the step of switching off causes the pump jack counterweight to rotate faster than the counterweight would rotate if there were no step of switching off. 11. The method of claim 8, wherein the step of switching off causes said electric motor to rotate faster than said electric motor would rotate if there were no step of switching off. 12. The method of claim 8, wherein said target phase angle is 90 degrees. 13. The method of claim 8, wherein said step of monitoring is performed with a microprocessor. 14. The method of claim 8, wherein said step of switching on occurs at a volts zero crossing point. 15. A method of saving energy for a pump jack with a counterweight disposed with a well, comprising the steps of: supplying an electric utility grid voltage and current to an electric motor connected with the pump jack during a first time segment;rotating the pump jack counterweight with said electric motor during said first time segment;observing the phase angle between the electric utility grid voltage and current supplied to said electric motor during said first time segment;comparing the observed phase angle with a target phase angle during said first time segment;switching off said electric utility grid voltage and current to said electric motor when the observed motor phase angle is greater than the target phase angle;monitoring an electric motor voltage across said electric motor during a second time segment after the step of switching off;rotating the pump jack counterweight during said second time segment and causing a cyclic period of said electric motor voltage across said electric motor to be shorter than a cyclic period of said electric utility grid voltage;comparing said cyclic period of said electric motor voltage across said electric motor with said cyclic period of said electric utility grid voltage during said second time segment; andswitching on said electric utility grid voltage and current to said electric motor at a zero crossing point when said cyclic period of said electric motor voltage returns to substantially equal to said cyclic period of said electric utility grid voltage and a transition from positive to negative of said electric motor voltage occurs at substantially the same time as a transition from positive to negative of said utility grid voltage. 16. The method of claim 15, further comprising the step of: moving a tubular string connected with the pump jack in a substantially vertical direction in the well, wherein the step of switching off causes said tubular string to move faster than said tubular string would move if there were no step of switching off. 17. The method of claim 15, wherein the step of switching off causes said motor to rotate faster than said motor would rotate if there were no step of switching off. 18. The method of claim 17, wherein said target phase angle is 90 degrees. 19. The method of claim 18, wherein said step of monitoring is performed with a microprocessor. 20. The method of claim 19, wherein said step of switching on occurs at a volts zero crossing point.

이 특허에 인용된 특허 (248) 인용/피인용 타임라인 분석

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Green Dan (Cranford NJ) Goldner Sandor (Brooklyn NY), Polyphase power factor controller.
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Oliveira Daniel,FRX ; Isner David,FRX ; Nishiyama Haruo,FRX ; Yamamoto Hiranaga,JPX, Power control unit.
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Wolze David A. (San Jose CA), Power controller for heater load.
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Okuma Yasuhiro,JPX ; Kuroki Kazuo,JPX ; Yamamoto Hiroshi,JPX, Power conversion apparatus.
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Lee Maw H. (Broadview Heights OH), Power factor control of a three-phase induction motor.
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Nola Frank J. (Huntsville AL), Power factor control system for AC induction motors.
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Nola Frank J. (Huntsville AL), Power factor control system for AC induction motors.
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Cross David A. (Sandy Beds GBX), Power factor corrected electrical power converter.
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Pippin,William; Pilleggi,Nicholas D., Power factor correction circuit.
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Pummer Alexander C. (4349 Krause St. Pleasanton CA 94588) Burchak Dwight D. (4236 Warbler Loop Fremont CA 94555) Powers John E. (43116 Mission Blvd. Fremont CA 94539), Power factor corrector for A.C. induction motors.
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Darshan, Yair, Power factor corrector with efficient ripple attenuator.
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Spann Robert J. (Euless TX), Power factor motor controller.
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Robert Pezzani FR, Power integrated circuit.
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Sagalovich Emil (Thornhill CAX) Bogdan Alexei (Bolton CAX), Power line control system.
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Cook ; Kenneth J. ; Murray ; Robert C., Power monitor.
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Robert L. Scoggins ; Anthony D. Sheaffer ; Michael A. Fulton ; James O. Crompton, Jr., Power regulation of electrical loads to provide reduction in power consumption.
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Scoggins, Robert L.; Sheaffer, Anythony D.; Fulton, Michael A.; Crompton, Jr., James O., Power regulation of electrical loads to provide reduction in power consumption.
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Tracewell Larry L. ; Tracewell Matthew S. ; Kociecki John, Power supply and power supply/backplane assembly and system.
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Lumsden, John L., Power supply for IGBT/FET drivers.
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Stich Frederick A. (Milwaukee WI), Power supply for electronic control system.
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Niemand,Robert; Koehler,Duane; Ray,Robert, Power supply having reduced-power mode.
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Kelley Paul H. (Boca Raton FL), Power switch arrangement.
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Luchaco, David, Power/energy management control system.
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Nola Frank J. (Huntsville AL), Pulsed thyristor trigger control circuit.
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Marshall William W. (Centerville OH) Springer Lamar D. (Spring Valley OH), Pump and electric motor protector.
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Westerman G. Wayne (Midland TX) Montgomery Richard C. (Midland TX) Pippin Gerald W. (Midland TX), Pump control responsive to voltage-current phase angle.
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Johnson, Steven A.; Larson, Kip M.; Walker, Dee R., Pump controller.
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Jones Gomer W. (Rose Hill KS), Pump jack.
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Stoker, Joe Kent, Pump-off control interrupter.
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Takada, Noriyuki; Yamakawa, Takayuki; Ryu, Hidetoshi; Kawano, Tetsuo; Kawamoto, Koji; Miyano, Toshio; Pratt, Richard L.; Mackinnon, Brian, Pump-off control method of pump jack.
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El-Sharkawi Mohamed A. (Renton WA) Venkata Subrahmanyam S. (Woodinville WA) Chen Mingliang (Kirkland WA) Andexler George (Everett WA) Huang Tony (Seattle WA), Reactive power compensator.
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Bender Emil A. (6625 Kane Way Bakersfield CA 93309), Reciprocating drive and reversing mechanism for long stroke, well pumping unit.
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Ying, Jeffrey, Remotely controllable wireless energy control unit.
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London Robert K. (Bakersfield CA) Loucks David G. (Sugar Land TX), Rod pump beam position determination from motor power.
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Beck,Thomas L.; Peterson,Ronald G.; Garlow,Mark E.; Smigura,Theresa, Rod pump control system including parameter estimator.
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Chapel, Steve; Pachoud, William, Smart electrical outlets and associated networks.
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Rohde Monty D., Smart power system.
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Nola Frank J. (Huntsville AL), Solar powered actuator with continuously variable auxiliary power control.
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Skinner David R. (Odessa TX), Speed control.
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Kadah Andrew S., Speed control drive circuit for blower motor.
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Billig, Richard R.; Schanin, David J., Spread spectrum power converter with duty-cycle error compensation.
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Nguyen,Hap; Nguyen,Chilinh, Standby loss prevention module, transformer system including same, and methods relating thereto.
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Espelage Paul M. (Ballston Lake NY), Static controller for power factor correction and adaptive filtering.
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Howard David E. ; Nola Frank J., Stepper motor control that adjusts to motor loading.
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Shuey,Kenneth C., Switch to bypass optical diode for reducing power consumption of electrical meters.
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Jiang Yimin ; Mao Hengchun, Switching network and method of reducing input current total harmonic distortion associated with a boost converter and.
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Arnet, Beat J.; Deyst, John P., Switching system.
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MacKay,David Kyle, System and method for attenuating noise associated with a back electromotive force signal in a motor.
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Jacobsen, Ron; Craig, Jack; Lumsden, John, System and method for closing an existing valve in response to a detected leak.
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MacKay,David Kyle, System and method for commutating a motor.
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MacKay,David Kyle, System and method for evaluating back electromotive force in a motor.
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Reaume,Daniel J.; Urbance,Randall J.; Jackson,Craig A., System and method for managing utility consumption.
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Sullivan ; II C. Gardner (Phoenix AZ) Hedges Walter P. (Laveen AZ), System and method for optimizing shed/restore operations for electrical loads.
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Lumsden, John L., System and method for providing constant loading in AC power applications.
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Alvin J. Watson, System and method for variable drive pump control.
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Moscovici Poldi (Woodcliff Lake NJ), System for alleviating harmonic distortion.
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Gristina,Dario; Gristina,Davide; Giammo,Giuseppe, System for managing resource infrastructure and resource consumption in real time.
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May, Marcus W.; Dyches, David A., System on a chip with RTC power supply.
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Nola Frank J. (Huntsville AL), Tachometer.
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Lumsden John L. (Boca Raton FL), Technique to drive transformer coupled line amplifier.
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Hastings,Jerome K.; Gass,Dale L.; Pahl,Birger; Lee,Davin R.; Hansen,James E., Temperature compensating integrated anti-differential current sensing system.
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Nola Frank J. (Huntsville AL), Three phase power factor controller.
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Nola Frank J. (Huntsville AL), Three-phase power factor controller with induced emf sensing.
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Libert James T. (Waukesha WI), Thyristor driver turn-off circuit.
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Horst, Gale Richard; Zhang, Jiannong; Syvokozov, Andriy Dmytrovych, Total home energy management system.
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Verfuerth, Neal R.; Bartol, Anthony J.; Ernst, Ronald E.; Wetenkamp, Kenneth J., Transformer wiring method and apparatus for fluorescent lighting.
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Cross David A. (Wrestlingworth GBX), Transient over voltage protection circuit for electrical power converters.
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Nola Frank J. (Huntsville AL), Triac failure detector.
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Bosley Robert W. ; Edelman Edward C., Turbogenerator power control system.
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Robert W. Bosley ; Edward C. Edelman ; Steven W. Lampe ; Brian W. Peticolas, Turbogenerator power control system.
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Riggio, Christopher Allen; Buske, Jeffrey Michael; Thompson, David R.; Stahle, Lyle J.; Hunter, Nathan J.; Woodland, Garth Blair, Two-stage converter using low permeability magnetics.
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Stich Frederick A. (Wisconsin Rapids WI) Hubert Thomas G. (Necedah WI) Layden David L. (New Lisbon WI) Zahrte Donald K. (Necedah WI), Uninterruptible power system.
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Maggelet John (Sussex WI) Rammel Robert J. (Muskego WI), Universal circuit board housing with a hinged member.
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Fa, George, Universal electrical energy saver.
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Mahmoudi Mathew, Universal laser power controller in a gas ion laser system.
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Hunt,Hunter L.; Price,Daniel G.; Baker, Jr.,Hugh D.; White,David A., User-installable power consumption monitoring system.
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Roos Charles E. (2507 Ridgewood Dr. Nashville TN 37215), Utility meter providing an interface between a digital network and home electronics.
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Enberg, Denis, Variable base load energy management system and method.
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Lumsden John (Boca Raton FL) Flum Alan (Boca Raton FL), Variable gain differential amplifier circuit.
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Hester ; II Lawrence R. (Sachse TX), Variable speed pump control for maintaining fluid level below full barrel level.
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Hedman Theodore A. (Littleton CO) Moe Maynard L. (Denver CO), Variable-limit demand controller for metering electrical energy.
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Chang,Jie; Keller,Kirby; Wang,Anhua; Zhang,Jiajia, Variable-structure diagnostics approach achieving optimized low-frequency data sampling for EMA motoring subsystem.
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Chang,Jie; Keller,Kirby; Wang,Anhua; Zhang,Jiajia, Variable-structure diagnostics approach achieving optimized low-frequency data sampling for EMA motoring subsystem.
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Lumsden John L. (Boca Raton FL), Voice over circuitry with adjustable depth of fade.
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Lauw Hian K. (Corvallis OR) Zedwick Robert S. (Corvallis OR), Voltage clamped parallel resonant converter with controllable duty cycle.
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Tibbits John L. (Centerville OH) Springer Lamar D. (Spring Valley OH) Sellers ; Jr. John W. (Xenia OH), Water pump protector.
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Diederich Richard E. (South Pasadena CA), Well pump control system.
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Bohon William M. (Frisco TX), Well pumping systems.
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Jarrett, Jr., Harold M., Wireless control of power transfer switches for electrical load management.
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Klaphake, Andrew J.; Mjolhus, Eric J.; Nijaguna, Suresha S.; Lanie, Jesse L., Electronic pump motor control.
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Parker, Peter A.; Rhew, Ray D.; Johnson, Thomas H.; Landman, Drew, Method of calibrating a force balance.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Energy saving system and method for devices with rotating or reciprocating masses 원문보기

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[미국특허] Energy saving system and method for devices with rotating or reciprocating masses 원문보기

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