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    • 3. 发明申请
    • IMPROVEMENTS RELATING TO WIND TURBINES
    • 关于风力涡轮机的改进
    • WO2015188835A1
    • 2015-12-17
    • PCT/DK2015/050159
    • 2015-06-11
    • VESTAS WIND SYSTEMS A/S
    • OLESEN, Ib Svend
    • F03D11/00G01M5/00
    • G01M5/0091F03D17/00F05B2270/804G01M5/0016G01M5/0058
    • The present invention relates to a method and a system for determining a parameter indicative of blade deflection and/or blade loading. An effective source of electro- magnetic (EM) radiation is arranged to transmit an EM radiation signal and a receiver is arranged to receive the EM radiation signal. The receiver being spaced apart from the effective source in a spanwise direction of the blade. The effective source and receiver being arranged such that deflection of the blade results in a straight-line distance between the effective source and the receiver varying and determining a parameter indicative of blade deflection and/or blade loading on the basis of the irradiance of the EM radiation signal received by the receiver.
    • 本发明涉及用于确定指示叶片偏转和/或叶片负载的参数的方法和系统。 布置有效的电磁辐射源(EM)来传输EM辐射信号,接收器布置成接收EM辐射信号。 接收器在叶片的翼展方向上与有效源间隔开。 有效源和接收器布置成使得叶片的偏转导致有效源和接收器之间的直线距离变化,并且基于EM的辐照度确定指示叶片偏转和/或叶片负载的参数 由接收机接收的辐射信号。
    • 9. 发明申请
    • ICE DETECTION METHOD AND SYSTEM FOR WIND TURBINE BLADES
    • 风力机叶片的冰检测方法和系统
    • WO2012007004A3
    • 2012-05-10
    • PCT/DK2011050274
    • 2011-07-12
    • VESTAS WIND SYS ASOLESEN IB SVEND
    • OLESEN IB SVEND
    • F03D11/00G01L1/22G01L25/00
    • F03D17/00F03D80/40F05B2260/845F05B2270/331F05B2270/802F05B2270/808G01L1/246G01M5/0016Y02E10/72Y02E10/722
    • The invention provides a method and system of detecting ice or other foreign matter on a wind turbine blade or damage to a wind turbine blade. The method in one aspect comprises: measuring twisting torque on the blade about its longitudinal axis to provide a detected torque signal;comparing a value based on the detected torque signal with a comparison value, the comparison value derived from one or more measured parameters having a predetermined relationship with the twisting torque about the longitudinal axis of the blade when the blade is operating under normal operating conditions; and determining that ice or other foreign matter is on the blade or that the blade is damaged if the value based on the detected torque signal differs from the comparison value by more than a predetermined amount. Wind turbine blades are designed such that any change in the shape of the blade reduces twisting torque on the blades significantly. Torque about the longitudinal axis of the blade can therefore be used as a sensitive indicator of ice on the blade and of damage to the blade.
    • 本发明提供了检测风力涡轮机叶片上的冰或其他异物或风力涡轮机叶片的损坏的方法和系统。 该方法在一个方面包括:测量叶片绕其纵向轴线的扭转扭矩以提供检测到的扭矩信号;将基于检测到的扭矩信号的值与比较值进行比较,比较值从一个或多个测量参数导出, 当叶片在正常操作条件下操作时,与围绕叶片的纵向轴线的扭转扭矩的预定关系; 并且如果基于检测到的扭矩信号的值与比较值相差超过预定量,则确定冰或其他异物在叶片上或叶片损坏。 风力涡轮机叶片被设计成使得叶片形状的任何变化都显着降低叶片上的扭转力矩。 因此,围绕叶片纵轴的转矩可以用作叶片上的冰的敏感指示以及叶片的损坏。