公开(公告)号：US12098699B2

公开(公告)日：2024-09-24

申请号：US18152860

申请日：2023-01-11

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Shafiqur Rehman ,  Luai M. Alhems ,  Md. Mahbub Alam ,  Longjun Wang

IPC: F03D1/06 ,  F03D17/00

CPC classification number: F03D1/0675 ,  F03D17/00 ,  F05B2240/303 ,  F05B2240/304 ,  F05B2240/306 ,  F05B2250/18 ,  F05B2260/70 ,  F05B2260/83

Abstract: A turbine blade for a wind turbine, the turbine blade has a blowing and suction provision in form of a plurality of arrays of blowing and suction holes defined on a curved suction surface of the turbine blade. An apparatus for turbine blade testing includes the turbine blade. The apparatus also includes a wind tunnel, a blowing source, and a suction source. The wind tunnel includes a wind channel having first and second end plates for mounting the turbine blade. A method of testing air flow in a turbine blade involves changing holes used for blowing and suction and determining a momentum coefficient for those various holes; and varying angle of attack with measurement of lift/drag ratio.

公开(公告)号：US20240247641A1

公开(公告)日：2024-07-25

申请号：US18597542

申请日：2024-03-06

Applicant: Nordex Energy SE & Co. KG

Inventor： Christof Rautmann

IPC: F03D13/30 ,  G01M1/12 ,  G01M7/02

CPC classification number: F03D13/30 ,  G01M1/122 ,  G01M7/025 ,  F05B2230/80 ,  F05B2260/83

Abstract: A method is for controlling the quality of a wind turbine rotor blade. The method includes: manufacturing of a wind turbine rotor blade at a manufacturing site, placing the wind turbine rotor blade on a support at the manufacturing site, applying a dynamic load to the wind turbine rotor blade while the wind turbine rotor blade is placed on the support in order to excite a vibration of the wind turbine rotor blade, detecting the vibration of the wind turbine rotor blade, determining an eigenfrequency of the wind turbine rotor blade based on the detected vibration, comparing the determined eigenfrequency with an expected eigenfrequency of the wind turbine rotor blade and evaluating the quality of the wind turbine rotor blade based on the results of the comparison.

公开(公告)号：US11885301B2

公开(公告)日：2024-01-30

申请号：US18186054

申请日：2023-03-17

Applicant: Wobben Properties GmbH

Inventor： Johannes Frommann ,  Enno von Aswege ,  Stephan Vollack

IPC: F03D17/00 ,  F03D1/06

CPC classification number: F03D17/00 ,  F03D1/06 ,  F05B2260/83 ,  F05B2270/328

Abstract: Provided is a method for identifying a blade malposition of a rotor blade of a wind power installation having one rotor and at least three rotor blades which in terms of the blade angles thereof are individually adjustable. For each rotor blade an actual angle is detected as the actual value of the blade angle; and the blade malposition is identified as a function of a blade angle deviation of the rotor blade and a rotational progress of the rotor. The blade angle deviation describes a deviation of the actual angle from a reference angle, and the rotational progress is representative of an angle about which the rotor has rotated onward after a start criterion. Blade malpositions in rotor blades which in terms of the blade angles thereof are individually adjustable are identified rapidly and reliably.

公开(公告)号：US20230296076A1

公开(公告)日：2023-09-21

申请号：US18016621

申请日：2021-06-30

Applicant: Siemens Gamesa Renewable Energy Innovation & Technology S.L.

Inventor： Alejandro Saez Moreno

IPC: F03D1/06 ,  F03D17/00 ,  F03D80/30

CPC classification number: F03D1/0675 ,  F03D17/00 ,  F03D80/30 ,  F05B2260/83

Abstract: A blade includes inwardly a continuous cable arrangement intended to measure conductivity for blade lightning protection, wherein the cable arrangement includes an upper portion and a lower portion extending therebetween the blade root and the blade tip, the lower portion electrically in contact with the upper portion closing an electrical loop, and wherein the blade further includes an electrical connector element located at the blade root and electrically in contact with the upper portion and the lower portion, the electrical connector element protruding exteriorly on the blade root so that conductivity of the blade is measured.

公开(公告)号：US11732696B2

公开(公告)日：2023-08-22

申请号：US17539432

申请日：2021-12-01

Applicant: General Electric Renovables Espana, S.L.

Inventor： Efren Albisu Iso ,  Pedro Arroyo Beltri

IPC: F03D17/00

CPC classification number: F03D17/00 ,  F05B2260/80 ,  F05B2260/83 ,  F05B2270/331 ,  F05B2270/808

Abstract: The present disclosure relates to a method for determining reliability of one or more load sensors in a wind turbine. The method comprises measuring loads with the load sensors during operation of the wind turbine; determining in-plane moments based on the measured loads; selecting the in-plane moments with 1 p frequency; and comparing the selected in-plane moments with theoretical in-plane moments due to a mass of the blade. The method then comprises determining that the load sensors have reduced reliability if the selected in-plane moments deviate from the theoretical in-plane moments by more than a first threshold value. The present disclosure also relates to wind turbine systems incorporating load sensors and methods for on-line determination of correct functioning of load sensors mounted on a wind turbine blade.

公开(公告)号：US20230228252A1

公开(公告)日：2023-07-20

申请号：US18010051

申请日：2021-05-10

Applicant: Siemens Gamesa Renewable Energy Innovation & Technology S.L.

Inventor： Jorge Cortaire Apesteguia

IPC: F03D80/60 ,  F03D13/30 ,  F03D13/40

CPC classification number: F03D80/60 ,  F03D13/30 ,  F03D13/40 ,  F05B2240/57 ,  F05B2260/02 ,  F05B2260/20 ,  F05B2260/83 ,  F05B2240/14

Abstract: A wind turbine cooling system, a wind turbine with the cooling system, and a method for testing the cooling system are provided. The cooling system includes a radiator assembly and a nacelle. The nacelle includes a housing rotatably connected with the radiator assembly. The cooling system is configured to thermally couple the radiator assembly to a heat source inside the nacelle. The radiator assembly is moveable between a first position and a second position. When in the first position, the radiator assembly extends away from an upper roof of the housing of the nacelle. When in the second position, the radiator assembly is contained inside the housing of the nacelle.

公开(公告)号：US20180335019A1

公开(公告)日：2018-11-22

申请号：US15776115

申请日：2016-11-09

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Sven Jesper KNUDSEN ,  Carsten Krogh NIELSEN

IPC: F03D7/04 ,  F03D17/00 ,  G06N99/00 ,  G06F17/50 ,  G01R21/133

CPC classification number: F03D7/046 ,  F03D7/048 ,  F03D17/00 ,  F05B2260/821 ,  F05B2260/83 ,  F05B2260/845 ,  F05B2270/32 ,  F05B2270/335 ,  F05B2270/70 ,  G01R21/1331 ,  G06F17/5009 ,  G06F2217/16 ,  G06N99/005 ,  Y02E10/723

Abstract: Monitoring and assessing power performance changes of one or more wind turbines of a wind farm. For each wind turbine to be monitored, a group of reference wind turbines is defined. During a training period a transfer function is generated for each monitored wind turbine. The transfer function establishes a relationship between locally measured wind speeds at each of the reference wind turbines and the power performance data for the monitored wind turbine obtained during the training period. During one or more subsequent test periods, measured power performance data for the monitored wind turbines is compared to predicted power performance data. The predicted power performance data is obtained by means of the locally measured wind speeds at the corresponding reference wind turbines during the test period(s) and the previously generated transfer function for the monitored wind turbine. This allows even small and/or gradual power performance degradation to be detected.

公开(公告)号：US20180328339A1

公开(公告)日：2018-11-15

申请号：US15775727

申请日：2016-11-17

Applicant: Wobben Properties GmbH

Inventor： Andree ALTMIKUS ,  Wolfgang DE BOER ,  Ralf MESSING

IPC: F03D7/02 ,  F03D1/06 ,  F03D17/00

CPC classification number: F03D7/0224 ,  F03D1/06 ,  F03D7/024 ,  F03D7/026 ,  F03D17/00 ,  F05B2220/30 ,  F05B2240/221 ,  F05B2260/74 ,  F05B2260/83 ,  F05B2270/1033 ,  F05B2270/20 ,  F05B2270/309 ,  F05B2270/32 ,  F05B2270/322 ,  F05B2270/327 ,  F05B2270/331 ,  F05B2270/335 ,  Y02E10/721 ,  Y02E10/723

Abstract: A method for controlling a wind turbine having rotor blades with an adjustable blade angle, comprising the steps operating the wind turbine in a partial load mode for wind velocities up to a nominal wind velocity, wherein in the partial load mode, a fixed partial load angle is provided for the blade angle, operating the wind turbine in a full load mode for wind velocities above the nominal wind velocity, wherein in the full load mode the blade angle is enlarged with increasing wind velocity and has values above the partial load angle, and wherein in the partial load mode, starting from a predetermined operating state, the blade angle is reduced as compared with the partial load angle.

公开(公告)号：US20180172775A1

公开(公告)日：2018-06-21

申请号：US15578650

申请日：2016-06-27

Applicant: DEIF A/S

Inventor： Jesper THOMSEN

IPC: G01R31/36 ,  F03D17/00 ,  F03D7/02 ,  F03D80/80 ,  F03B3/14

CPC classification number: G01R31/367 ,  F03B3/145 ,  F03D7/0224 ,  F03D17/00 ,  F03D80/82 ,  F05B2260/76 ,  F05B2260/80 ,  F05B2260/83 ,  F05B2270/107 ,  G01M15/14 ,  G01R31/389 ,  Y02E10/723

Abstract: Pitch system (1) comprising at least one pitch motor drive (3) connected an electrical network (5). Each pitch motor drive (3) is connected to a power bank, and the pitch system comprises a test module adapted to be activated in a test position. The test module comprises a brake module (8) each connected to a pitch motor drive (3), and each brake module (8) is adapted to load a pitch motor drive (3) with a certain load Rb. Hereby a voltage drop takes place over the power bank (6). The power bank (6) is separated into a number of power blocks (9) and the voltage drop ΔV of each power block (9) is adapted to be registered by the test module when the brake

公开(公告)号：US09945386B2

公开(公告)日：2018-04-17

申请号：US15041347

申请日：2016-02-11

Applicant: SOLAR TURBINES INCORPORATED

Inventor： David Tai Wai Lee ,  Kwok-Kwong Ben Tse ,  Kenneth Gregory Thomas ,  Ching Kai Chan ,  Jorge Hernandez-Maldonado

IPC: F04D27/00 ,  G01M15/14 ,  F04D29/32

CPC classification number: F04D27/001 ,  F01D21/04 ,  F04D29/321 ,  F05B2220/302 ,  F05B2260/83 ,  F05D2260/80 ,  G01M15/14

Abstract: A system and method for detecting the rotation breakaway of a spacer from a compressor rotor disk are disclosed herein. The method includes detecting a disk sensed feature and a spacer sensed feature on the compressor rotor disk and the spacer respectively. The method also includes comparing the timing between the two to a predetermined threshold to determine whether the relative position of the spacer to the compressor rotor disk exceeds a predetermined amount. The predetermined amount may be selected to determine whether an imbalance, rubbing, or binding can occur in the gas turbine engine or to determine whether anti-rotation features have been broken.