公开(公告)号：EP3362683A1

公开(公告)日：2018-08-22

申请号：EP16781672.7

申请日：2016-10-11

Applicant: Vestas Wind Systems A/S

Inventor： KJÆR, Martin Ansbjerg ,  HANSEN, Frank Møller ,  NIELSEN, Jakob Hviid ,  NEUBAUER, Jesper Lykkegaard ,  CHRISTENSEN, Poul Brandt ,  CAPONETTI, Fabio ,  SKALLEBÆK, Christian ,  GRØN-STEVENS, Robert ,  ØSTERGAARD, Kasper Zinck

IPC: F03D7/02

Abstract: There is provided a method for controlling a hydraulic pitch force system (220) so as to reduce or eliminate a decrease in hydraulic oil pressure (241) if a hydraulic system parameter value is outside a hydraulic system parameter range, the method comprising: Obtaining (690) the hydraulic system parameter value, and operating the hydraulic pitch force system (220) according to a reduced mode (692) if the hydraulic system parameter value is outside the hydraulic system parameter range, wherein in the reduced mode one or more pitch based activities are reduced (694) or suspended. An advantage thereof may be that it enables keeping the wind turbine in production in certain instances rather than shutting down the wind turbine. In aspects, there is furthermore presented a computer program product, a pitch control system (250) and a wind turbine (100).

公开(公告)号：EP3317531A1

公开(公告)日：2018-05-09

申请号：EP16731504.3

申请日：2016-06-17

Applicant: Vestas Wind Systems A/S

Inventor： CAPONETTI, Fabio ,  JAKOBSEN, Aleks Kvartborg ,  HILTON, Dan ,  ØSTERGAARD, Kasper Zinck

IPC: F03D17/00

CPC classification number: F03D17/00 ,  F05B2240/2211 ,  F05B2260/80 ,  F05B2270/326 ,  F05B2270/327 ,  F05B2270/329 ,  F05B2270/331 ,  F05B2270/807 ,  F05B2270/808 ,  G01L1/22 ,  G01L5/12 ,  G01M15/14 ,  Y02E10/726

Abstract: A sensor system for a wind turbine blade, the system comprising: a blade load sensor providing a load measurement; a processing unit interfaced with the blade load sensor and configured to provide a corrected load parameter as an output. The processing unit includes: an axial force estimation module that determines an estimated axial force on the wind turbine blade in a direction along the length of the blade; and a load calculation module that 10 determines the corrected load parameter based on the estimated axial force and the load measurement of the blade load sensor.