Damping of oscillations in wind turbines

F - Mech Eng,Light,Heat,Weapons – 03 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

F03D 1/06 (2006.01) F03D 7/04 (2006.01) F03D 11/00 (2006.01)

Patent

CA 2374803

Damping of oscillations of the first bending mode of a wind turbine is performed means of one or more containers partly filled with a liquid for damping oscillations of the first natural bending frequency of the wind turbine. The damping means comprises a plurality of box shaped containers having a square cross section and being partly filled with liquid so as to provide a unidirectional damping with a logarithmic decrement of oscillations of the first natural bending frequency of the wind turbine of at least 4-8%. For off-shore wind turbines, the combined excitation of the wind and sea waves requires more damping, the damping is preferably equivalent to a logarithmic decrement of 10-15%. Furthermore, the invention relates to damping of oscillation of the second bending mode of a wind turbine and to the combined damping of oscillations of the first as well as the second bending mode of the wind turbine.

Cette invention concerne l'amortissement des vibrations en battement qui s'obtient au moyen d'un ou de plusieurs récipients partiellement remplis d'un liquide destiné à amortir les vibrations du premier mode de flexion en battement d'une éolienne. Le dispositif d'amortissement comprend une pluralité de récipients de section carrée partiellement remplis d'un liquide conçus pour assurer un amortissement unidirectionnel avec un décrément logarithmique d'au moins 4-8 % des oscillations du premier mode de flexion en battement de l'éolienne. Pour les éoliennes situées au large, l'excitation combinée du vent et des vagues exige un amortissement plus important, de préférence équivalant à un décrément logarithmique de 10-14 %. Cette invention concerne également l'amortissement d'oscillations du second mode de flexion en battement et l'amortissement combiné des oscillations tant du premier que du second modes de flexion en battement d'une éolienne.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Damping of oscillations in wind turbines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Damping of oscillations in wind turbines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Damping of oscillations in wind turbines will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1600632

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.