EP 1738073 A1 20070103 - A METHOD FOR REDUCTION OF AXIAL POWER VARIATIONS OF A WIND POWER PLANT
Title (en)
A METHOD FOR REDUCTION OF AXIAL POWER VARIATIONS OF A WIND POWER PLANT
Title (de)
VERFAHREN ZUR REDUZIERUNG VON AXIALKRAFTVARIATIONEN BEI EINEM WINDKRAFTWERK
Title (fr)
PROCEDE DE REDUCTION DES VARIATIONS DE PUISSANCE AXIALE D'UNE EOLIENNE
Publication
Application
Priority
- NO 2005000096 W 20050318
- NO 20041208 A 20040322
Abstract (en)
[origin: WO2005090781A1] A method which continuously reduces the variations of the rotor axial force and thus reduces fatigue loads on rotor blades and tower, whilst the resultant output to the generator is not significantly affected or is maintained within acceptable limits in relation to limitations of the drive gear, generator and power grid. A method of using the rotor axial force to actively counter the motions of a floating power plant. The method of using the rotor axial force to actively counter the motions of a floating power plant. The method also describes how rotational forces about the vertical axis (12) of the tower (4) are controlled and countered by cyclic variation of pitch angles and associated forces on the individual rotor blade. The method also describes how the aerodynamic force variation on each individual blade as a consequence of different wind velocities at different heights (vertical wind shear) and in the horizontal direction parallel to the rotor plane (horizontal wind shear) can be reduced.
IPC 8 full level
F03D 7/02 (2006.01); F03D 7/04 (2006.01); F03D 11/00 (2006.01)
IPC 8 main group level
F03D (2006.01)
CPC (source: EP KR NO US)
F03D 7/0204 (2013.01 - EP KR NO US); F03D 7/0224 (2013.01 - EP KR NO US); F03D 7/024 (2013.01 - EP KR NO US); F03D 7/0276 (2013.01 - EP KR US); F03D 7/0292 (2013.01 - EP KR US); F03D 7/042 (2013.01 - EP KR US); F05B 2240/93 (2013.01 - EP KR US); F05B 2240/95 (2013.01 - EP KR US); F05B 2260/821 (2013.01 - EP KR US); F05B 2270/1016 (2013.01 - EP KR US); F05B 2270/1095 (2013.01 - EP KR US); F05B 2270/321 (2013.01 - EP US); F05B 2270/327 (2013.01 - EP US); F05B 2270/331 (2013.01 - EP US); F05B 2270/404 (2013.01 - EP US); F05B 2270/808 (2013.01 - EP US); Y02E 10/72 (2013.01 - EP KR US); Y02E 10/727 (2013.01 - EP)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005090781 A1 20050929; AU 2005224580 A1 20050929; AU 2005224580 B2 20110224; CA 2564635 A1 20050929; CA 2564635 C 20121211; EP 1738073 A1 20070103; JP 2007530856 A 20071101; JP 5006186 B2 20120822; KR 101145255 B1 20120601; KR 20070002038 A 20070104; NO 20041208 D0 20040322; NO 20041208 L 20050923; NO 20064791 L 20061221; NO 342746 B1 20180806; US 2007212209 A1 20070913
DOCDB simple family (application)
NO 2005000096 W 20050318; AU 2005224580 A 20050318; CA 2564635 A 20050318; EP 05731806 A 20050318; JP 2007504903 A 20050318; KR 20067020476 A 20060929; NO 20041208 A 20040322; NO 20064791 A 20061023; US 59910905 A 20050318