System and method for measuring shaft deflection in a wind turbine
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G06F-015/00
B63H-003/00
출원번호
US-0970078
(2010-12-16)
등록번호
US-8099255
(2012-01-17)
발명자
/ 주소
Madge, James Henry
출원인 / 주소
General Electric Company
대리인 / 주소
Dority & Manning, P.A.
인용정보
피인용 횟수 :
3인용 특허 :
4
초록▼
A measurement system and a method for measuring a net deflection of a shaft in a wind turbine are disclosed. The measurement system includes at least one first sensor positioned proximate a first shaft component, the at least one first sensor configured to measure at least one first deflection of th
A measurement system and a method for measuring a net deflection of a shaft in a wind turbine are disclosed. The measurement system includes at least one first sensor positioned proximate a first shaft component, the at least one first sensor configured to measure at least one first deflection of the first shaft component, and at least one second sensor configured to measure at least one reference deflection. The measurement system further includes a base, wherein the at least one first sensor and the at least one second sensor are coupled together and configured on the base, and a processor configured to calculate the net deflection of the shaft utilizing the at least one first deflection and the at least one reference deflection.
대표청구항▼
1. A measurement system for measuring a net deflection of a shaft in a wind turbine, the measurement system comprising: at least one first sensor positioned proximate a first shaft component, the at least one first sensor configured to measure at least one first deflection of the first shaft compone
1. A measurement system for measuring a net deflection of a shaft in a wind turbine, the measurement system comprising: at least one first sensor positioned proximate a first shaft component, the at least one first sensor configured to measure at least one first deflection of the first shaft component;at least one second sensor positioned proximate a second shaft component, the at least one second sensor configured to measure at least one second deflection of the second shaft component, the second shaft component spaced apart axially from the first shaft component along the shaft;a base, wherein the at least one first sensor and the at least one second sensor are coupled together and configured on the base; and,a processor configured to calculate the net deflection of the shaft utilizing the at least one first deflection and the at least one second deflection. 2. The measurement system of claim 1, wherein the first shaft component is a hub flange. 3. The measurement system of claim 1, wherein the second shaft component is a disc mounted to the shaft. 4. The measurement system of claim 1, wherein the at least one first sensor and the at least one second sensor are proximity sensors. 5. The measurement system of claim 1, wherein the base is a pillow block assembly. 6. The measurement system of claim 1, further comprising a plurality of first sensors and a plurality of second sensors, each of the plurality of first sensors configured to measure a first deflection and each of the plurality of second sensors configured to measure a second deflection. 7. The measurement system of claim 6, wherein the first shaft component defines a first plane, and wherein each of the plurality of first sensors is configured to measure the first deflection with respect to the first plane. 8. The measurement system of claim 1, wherein the at least one first sensor and the at least one second sensor are positioned substantially circumferentially identically with respect to the shaft. 9. The measurement system of claim 1, wherein the processor is further configured to adjust a pitch axis of at least one rotor blade of the wind turbine based on the net deflection of the shaft. 10. A measurement system for measuring a net deflection of a shaft in a wind turbine, the measurement system comprising: a plurality of first sensors positioned proximate a first shaft component and circumferentially spaced about the shaft, the first shaft component defining a first plane, the plurality of first sensors configured to measure a plurality of first deflections of the first shaft component with respect to the first plane;a plurality of second sensors positioned proximate a second shaft component and circumferentially spaced about the shaft, the second shaft component defining a second plane, the plurality of second sensors configured to measure a plurality of second deflections of the second shaft component with respect to the second plane, the second shaft component spaced apart axially from the first shaft component along the shaft;a base, wherein each of the plurality of second sensors is coupled to one of the plurality of first sensors to form a sensor couple, and wherein each sensor couple is configured on the base; and,a processor configured to calculate the net deflection of the shaft utilizing the plurality of first deflections and the plurality of second deflections. 11. A method for measuring a net deflection of a shaft in a wind turbine, the method comprising: measuring at least one first deflection of a first shaft component;measuring at least one second deflection of a second shaft component, the second shaft component spaced apart axially from the first shaft component along the shaft; and,calculating the net deflection of the shaft utilizing the at least one first deflection and the at least one second deflection,wherein the shaft is configured on a base, and wherein the at least one first deflection and the at least one second deflection are both measured relative to the base. 12. The method of claim 11, wherein at least one first sensor is positioned proximate the first shaft component to measure the at least one first deflection and at least one second sensor is positioned proximate the second shaft component to measure the at least one second deflection, and wherein the at least one first sensor and the at least one second sensor are coupled together and configured on the base. 13. The method of claim 12, wherein the at least one first sensor and the at least one second sensor are proximity sensors. 14. The method of claim 11, wherein the first shaft component is a hub flange and the second shaft component is a disc mounted to the shaft. 15. The method of claim 11, further comprising measuring a plurality of first deflections, measuring a plurality of second deflections, and calculating the net deflection of the shaft utilizing the plurality of first deflections and the plurality of second deflections. 16. The method of claim 11, further comprising adjusting a pitch axis of at least one rotor blade of the wind turbine based on the net deflection of the shaft. 17. The method of claim 11, wherein the base is a pillow block assembly. 18. The method of claim 11, wherein the at least one first deflection and the at least one second deflection are measured at substantially circumferentially identical positions with respect to the shaft.
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이 특허에 인용된 특허 (4)
Pierce,Kirk G.; LeMieux,David Lawrence, Method and apparatus for wind turbine rotor load control.
Pierce,Kirk G.; LeMieux,David Lawrence; Blakemore,Ralph W., Method and apparatus for wind turbine rotor load control based on shaft radial displacement.
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