Balancing of wind turbine parts
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 6, 2016
Grant Date -
Jun 2, 2016
app pub date -
Jul 31, 2015
filing date -
Feb 8, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A wind of the type having a tower and a nacelle with a rotor rotatably connected to the nacelle for rotating about a rotor axis and having a plurality of equally spaced blades has the rotor balanced by firstly taking a measurement of torsional vibration and then by using photographic techniques to analyze dynamic imbalance caused by differences in the angle of attack of the blades. The torsional vibration is detected using two sensors at positions mirrored exactly in distance to the left and right of the rotor axis and detecting vibration in the axial direction. The angle of attack is measured by analyzing images of the tip of the blade where, during the analysis, distortion in angles at different locations in the image are corrected, in dependence upon a prior analysis of an image taken by the camera relative to a known image.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2015 Application Filing Year
- F03D Class
- 708 Applications Filed
- 547 Patents Issued To-Date
- 77.26 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- F03D Class
- 7.25 % this patent is cited more than
- 9 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 6, 2028 |
