[특허]Stall controller and triggering condition control features for a wind turbine

[미국특허] Stall controller and triggering condition control features for a wind turbine 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F03D-009/00
출원번호	US-0497096 (2009-07-02)
등록번호	US-8247914 (2012-08-21)
발명자 / 주소	Calley, David Gregory
출원인 / 주소	Southwest Windpower, Inc.
인용정보	피인용 횟수 : 3 인용 특허 : 25

초록 ▼

Control features for a wind turbine that control the turbine over a range of wind speeds and under triggering conditions with reduced noise, cost, and reliability issues associated with other such controls. Control is accomplished via control electronics, which adjust the torque produced by the electrical output generation device (e.g., alternator) within the wind turbine. During normal operation, torque is adjusted for optimum aerodynamic performance and maximum output of power. In winds above rated power, the control circuit regulates torque to lower aerodynamic performance, as necessary to maintain desired power level output. In triggering conditions, such as during simultaneous control circuit failure and loss of some portion of the electrical output generation device in extreme winds, wind turbine control is accomplished by increasing torque (e.g., via a separate controller) from the electrical output generation device via shorting of windings, so as to cause retardation of blade rotation.

대표청구항 ▼

1. A wind turbine control and backup system, the system comprising: a control circuit connectable to a plurality of windings of an electrical output generating device for a wind turbine, wherein said control circuit is configured to control the wind turbine during normal operation conditions, wherein the control circuit operates the electrical output generating device at variable speed for controlling output from the wind turbine via aerodynamic stall; anda backup circuit coupled to the electrical output generating device, wherein said backup circuit is configured for controlling operation of the wind turbine in an emergency condition via increasing current based torque opposing operation of the wind turbine, and wherein said controlling operation of the wind turbine in an emergency condition is effected without using any mechanical techniques. 2. The wind turbine of claim 1, wherein increasing current based torque opposing operation of the wind turbine includes: applying pulse width modulation to at least one of the plurality of windings of the electrical output generating device. 3. The wind turbine of claim 1, wherein increasing current based torque opposing operation of the wind turbine includes: shorting at least one of the plurality of windings of the electrical output generating device. 4. The wind turbine of claim 1, wherein the electrical output generating device is an alternator. 5. The wind turbine of claim 1, wherein the electrical power output device is the generator of a wind turbine, and wherein said wind turbine produces single phase power. 6. A wind turbine control and backup system, the system comprising: a control circuit for controlling the rate of rotation of a wind turbine during a normal operation mode, wherein said control circuit is connected to a plurality of windings of an electrical output generating device for the wind turbine, wherein the control circuit operates the electrical output generating device at variable speed for controlling output from the wind turbine; anda backup circuit for electronically braking the wind turbine during an emergency mode of operation, wherein said emergency mode of operation is triggered when the wind turbine exceeds a predetermined rate of rotation, wherein said backup circuit is configured to control operation of the wind turbine by increasing current based torque to one or more of the windings of the wind turbine in order to oppose operation of the wind turbine, and wherein no mechanical techniques are employed to protect the wind turbine during said emergency mode of operation. 7. The wind turbine control and backup system of claim 6, wherein increasing current based torque opposing operation of the wind turbine includes: applying pulse width modulation to at least one of the plurality of windings of the electrical output generating device. 8. The wind turbine control and backup system of claim 6, wherein increasing current based torque opposing operation of the wind turbine includes: shorting at least one of the plurality of windings of the electrical output generating device.

이 특허에 인용된 특허 (25) 인용/피인용 타임라인 분석

Coleman Clint (Warren VT) Juengst Theresa M. (Warren VT) Zuteck Michael D. (Kemah TX), Advanced wind turbine with lift cancelling aileron for shutdown.
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Coleman Clint (Warren VT) Juengst Theresa M. (Warren VT) Zuteck Michael D. (Kemah TX), Advanced wind turbine with lift-destroying aileron for shutdown.
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Lynch, Jonathan A.; Petter, Jeffrey K., Control system for a power converter and method of controlling operation of a power converter.
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Bywaters,Garrett Lee; Danforth,William; Bevington,Christopher; Stowell,Jesse; Costin,Daniel, Direct drive wind turbine.
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Bywaters,Garrett; Danforth,William; Bevington,Christopher; Jesse,Stowell; Costin,Daniel, Direct drive wind turbine.
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Bywaters,Garrett; Danforth,William; Bevington,Christopher; Jesse,Stowell; Costin,Daniel, Direct drive wind turbine.
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Bywaters,Garrett; Danforth,William; Bevington,Christopher; Stowell,Jesse; Costin,Daniel, Direct drive wind turbine.
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Calley, David, Electrical machine.
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Calley, David Gregory, Electrical machine.
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Belinsky, Sidney Irving, Installation for harvesting ocean currents (IHOC).
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Janssen, Wilhelm; Luetze, Henning; Buecker, Andreas; Hoffmann, Till; Hagedorn, Ralf, Low voltage ride through for wind turbine generators.
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Tyagi, Abhishek; Rao, Shrikant P.; Ganguly, Somnath S G, Micro wind turbine topology for small scale power generation.
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Lynch,Jonathan A.; Petter,Jeffrey K, Parallel-connected inverters with separate controllers having impedance current regulators.
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Calley, David Gregory, Stall controller and triggering condition control features for a wind turbine.
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Calley,David Gregory, Stall controller and triggering condition control features for a wind turbine.
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Calsoyds, Kyril; Calley, David G., Truck after-body drag reduction device.
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Mikhail, Amir S.; Christenson, Craig L.; Cousineau, Kevin L.; Erdman, William L.; Holley, William E., Variable speed wind turbine generator.
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Erdman William L. (Brentwood CA), Variable speed wind turbine with reduced power fluctuation and a static VAR mode of operation.
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Calley David G. (Rte. 8 ; Box 51 ; LRB Flagstaff AZ 86004), Wind driven electric current producer.
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McCoin,Dan Keith, Wind energy conversion system.
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Calley, David Gregory; Knowler, Harrison Marden, Wind turbine controller.
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Moehlenkamp,Georg, Wind turbine for producing electrical power and a method of operating the same.
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Coleman Clint (Warren VT), Wind turbine pitch control hub.
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Coleman, Clint; Kurth, William T., Wind turbine rotor aileron.
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Coleman Clint (Warren VT) Kurth William T. (Warren VT) Jankowski Joseph (Stowe VT), Wind turbine rotor hub and teeter joint.
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이 특허를 인용한 특허 (3) 인용/피인용 타임라인 분석

Brath, Per, Changing a mode of operation of a wind turbine.
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Rozman, Gregory I.; Gieras, Jacek F.; Moss, Steven J., High voltage DC power generating system including selectively removable neutral node.
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Calley, David Gregory, Stall controller and triggering condition control features for a wind turbine.
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[미국특허] Stall controller and triggering condition control features for a wind turbine 원문보기