-
1.发明授权公开(公告)号：US10378512B2
公开(公告)日：2019-08-13
申请号：US14908879
申请日：2014-07-04
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Ib Svend Olesen
Abstract: Improvements Relating to Wind Turbines A wind turbine apparatus and a method of operating said wind turbine to maintain the load on the rotor blade below a predetermined threshold level is provided. The method comprises: measuring load at a root end of the rotor blade; measuring an acceleration at a location on the rotor blade outboard from the root end, the acceleration being caused by transient loads acting on the rotor blade; and controlling the wind turbine based upon the measured load and the measured acceleration to maintain the load on the rotor blade below a predetermined threshold level.
-
公开(公告)号：US20130278918A1
公开(公告)日：2013-10-24
申请号：US13988493
申请日：2011-11-23
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Lars Glavind , Thomas Hjort , Ib Svend Olesen
IPC: G01J1/04
CPC classification number: G01J1/0425 , F03D9/25 , F03D17/00 , F03D80/00 , G01D5/35303 , G01D5/35316 , G01D5/35345 , G01M5/0016 , G01M5/0033 , G01M5/0091 , G01M11/083 , H02K9/24 , H02K11/25 , Y02E10/725
Abstract: A sensor system for measuring an operating parameter of a wind turbine component is described. The fibre optic sensor system comprises a light source for outputting light in a predetermined range of wavelengths, and an optical fibre comprising a long Fibre Bragg Grating, extending continuously over a length of the optical fibre to provide a continuous measurement region in the optical fibre. The optical fibre is coupled to the wind turbine component such that the continuous measurement region is located at a region of the wind turbine component to be sensed, and such that the grating period at each location in the continuous measurement period is dependent upon the value of the operating parameter at that location. A light detector receives light from the optical fibre, and provides an output signal to the controller indicating the intensity of the received light; based on the detected light, a value for the operating parameter is determined.
Abstract translation: 描述了用于测量风力涡轮机部件的操作参数的传感器系统。 光纤传感器系统包括用于输出预定波长范围的光的光源，以及包括在光纤长度上连续延伸的长光纤布拉格光栅的光纤，以在光纤中提供连续的测量区域。 光纤耦合到风力涡轮机部件，使得连续测量区域位于要感测的风力涡轮机部件的区域，并且使得连续测量周期中每个位置处的光栅周期取决于 该位置的操作参数。 光检测器从光纤接收光，并向控制器提供指示接收光的强度的输出信号; 基于检测到的光，确定操作参数的值。
-
公开(公告)号：US11248583B2
公开(公告)日：2022-02-15
申请号：US16076648
申请日：2017-02-10
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Lars Glavind , Ib Svend Olesen , Morten Thøgersen , Kristian Kiib , Johnny Nielsen
IPC: F03D7/02
Abstract: A yaw sensor for a wind turbine comprises a plurality of rotary switches, each configured to be coupled to a yaw drive gearbox of a wind turbine nacelle, the rotary switches each being operable to activate and deactivate respective associated electrical contacts in dependence on an amount of yaw rotation of the nacelle relative to a start position.
Each electrical contact is active at a plurality of first yaw rotation ranges with respect to the start position, and inactive at a plurality of second yaw rotation ranges with respect to the start position, the first and second yaw rotation ranges being interleaved.-
公开(公告)号：US10436673B2
公开(公告)日：2019-10-08
申请号：US15580397
申请日：2016-06-17
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Ib Svend Olesen , Dan Hilton , Johnny Nielsen , Kristian Kiib
IPC: G01M13/00 , G01M13/02 , F03D7/00 , F16H59/14 , G01B21/32 , G01L5/26 , G01L1/04 , G01L3/10 , F03D17/00 , F03D7/02 , F16H59/46
Abstract: A method of determining torsional deformation in a drivetrain e.g. of a wind turbine. To provide a reliable and simple deformation assessment, the method comprises the step of generating a first signal representing first rotational speed of a low speed shaft, generating a second signal representing the second rotational speed of a high speed shaft, and determining torsional deformation based on changes in the ratio between the first and second signals.
-
公开(公告)号：US20150122007A1
公开(公告)日：2015-05-07
申请号：US14362994
申请日：2012-12-07
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Ib Svend Olesen
CPC classification number: G01P13/02 , F03D17/00 , F05B2270/321 , F05B2270/804 , G01N21/53 , G01P5/20 , G01S17/50 , G01S17/95 , Y02A90/19
Abstract: The invention relates to an optical detector for determining the relative wind direction (attack angle) relative to a rotating or stationary wind turbine rotor. The optical detector comprises an output part which transmits distinguishable light beams out from a rotor blade in different predetermined directions. The beams may be distinguishable by light color, by the time the individual beams are emitted and/or by different amplitude modulation frequencies or other modulations of the individual beams. By determining pulse times of scattered light from wind borne particles moving in or through the different distinguishable beams, or determining the number of pulses within a period, it is possible to determine the relative wind direction or angle of attach as the predetermined direction of a beam which has the longest pulse times or the fewest number of pulses within a given period of time.
Abstract translation: 本发明涉及一种用于确定相对于旋转或固定风力涡轮机转子的相对风向（攻角）的光学检测器。 光学检测器包括输出部件，其以不同的预定方向将可分辨的光束从转子叶片传出。 光束可以通过光颜色，各个光束发射的时间和/或通过不同的幅度调制频率或各个光束的其它调制来区分。 通过确定在不同可分辨光束中移动或穿过不同可分辨光束的风载粒子的散射光的脉冲时间，或者确定一段时间内的脉冲数，可以确定作为光束的预定方向的相对风向或附着角度 在给定的时间内具有最长的脉冲时间或最少的脉冲数。
-
Patent Agency Ranking
公开(公告)号：US10934998B2
公开(公告)日：2021-03-02
申请号：US16068030
申请日：2017-01-10
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Lars Glavind , Kristian Kiib , Ib Svend Olesen , Johnny Nielsen
Abstract: A yaw sensor for a wind turbine is described. The yaw sensor comprises a rotary switch, configured to be coupled to a yaw drive gearbox of a wind turbine nacelle, the rotary switch being operable to activate and deactivate an electrical contact in dependence on an amount of yaw rotation of the nacelle relative to a start position. The electrical contact is active at a plurality of first yaw rotation ranges with respect to the start position, and inactive at a plurality of second yaw rotation ranges with respect to the start position, the first and second yaw rotation ranges being interleaved, at least some of the first yaw rotation ranges having different lengths from each other and/or at least some of the second yaw rotation ranges having different lengths from each other. The electrical contact generates an electrical signal when active.
-
公开(公告)号：US10161261B2
公开(公告)日：2018-12-25
申请号：US14763648
申请日：2013-02-14
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Saed Ehsani , Erik Carl Lehnskov Miranda , Ib Svend Olesen , Martin Møller Sørensen
Abstract: To identify abnormal behavior in a turbine blade, a failure detection system generates a “fingerprint” for each blade on a turbine. The fingerprint may be a grouping a dynamic, physical characteristics of the blade such as its mass, strain ratio, damping ratio, and the like. While the turbine is operating, the failure detection system receives updated sensor information that is used to determine the current characteristics of the blade. If the current characteristics deviate from the characteristics in the blade's fingerprint, the failure detection system may compare the characteristics of the blade that deviates from the fingerprint to characteristics of another blade on the turbine. If the current characteristics of the blade are different from the characteristics of the other blade, the failure detection system may change the operational mode of the turbine such as disconnecting the turbine from the utility grid or stopping the rotor.
-
公开(公告)号：US10094359B2
公开(公告)日：2018-10-09
申请号：US14893145
申请日：2014-05-21
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Ib Svend Olesen
Abstract: The present invention relates to a method and to a wind turbine for determining the tip angle of a blade of a wind turbine rotor during rotation of the rotor. The method comprising: (a) transmitting a light signal from a first blade of the wind turbine rotor towards a second blade of the rotor; (b) receiving the light signal at the second blade of the rotor; and (c) calculating the tip angle of the first or second blade based upon characteristics of the received light signal.
-
公开(公告)号：US10077761B2
公开(公告)日：2018-09-18
申请号：US14783904
申请日：2014-04-10
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Ib Svend Olesen
Abstract: Improvements Relating to Wind Turbine Sensors A sensor apparatus for a wind turbine is described. The apparatus comprises a sensor and a heating system. The heating system comprises an optical fibre arranged to transmit electromagnetic radiation from a light source to the sensor. The sensor is irradiated by the electromagnetic radiation thereby heating the sensor and preventing or reducing ice accretion.
-
公开(公告)号：US09683551B2
公开(公告)日：2017-06-20
申请号：US14369524
申请日：2012-12-13
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Asger Svenning Andersen , Jesper Sandberg Thomsen , Jacob Krogh Kristoffersen , Ib Svend Olesen , Jonas Romblad
CPC classification number: F03D7/0256 , F03D7/0224 , F03D7/042 , F03D7/046 , F03D17/00 , Y02E10/723
Abstract: The rotor blades of a wind turbine each have a plurality of fiber-optic pressure variation sensors which can detect the onset of a stall condition. The output of the stall condition sensors is input to a stall count circuit which increases a stall count signal each time a stall indication is received. The stall count signal is decayed exponentially over time and the current signal is summed with the decayed signal from a previous sampling period to form a value from which a stall margin is determined. An λ:θ curve of tip speed to wind speed ratio λ against pitch angle reference θ is then determined from the stall margin.
-
-
-
-
-
-
-
-
-
Search Results
11
records
(took 0.035 seconds)
