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    • 3. 发明申请
    • METHOD OF CORRECTING ROTOR IMBALANCE AND WIND TURBINE THEREOF
    • 校正转子不平衡和风力涡轮机的方法
    • WO2016169964A1
    • 2016-10-27
    • PCT/EP2016/058725
    • 2016-04-20
    • ENVISION ENERGY (DENMARK) APS
    • PEDERSEN, Keld Stefan
    • F03D7/02F03D1/00
    • F03D13/35F03D7/0224F03D7/024F03D7/0296Y02E10/723
    • The present invention relates to a method of correcting rotor imbalance and a wind turbine thereof. The correction method comprises measuring the vibrations within at least one time window and determining an imbalance factor and an imbalance phase. The values of the parameters in the equation for calculating the correction action are then updated based on the imbalance factor and an imbalance phase. A correction angle for each of the wind turbine blades is calculated using these adjusted parameters. The correction angle is used to aerodynamically balance the rotor, and a model may be used to determine the initial values of the parameters. Another imbalance factor and imbalance phase is determined based on another set of measurements. This imbalance factor is then used to calculate a mass moment for correcting the mass imbalance in the wind turbine blades. The weight and location of a balancing mass is finally calculated based on this mass moment and installed in the respective wind turbine blades.
    • 本发明涉及一种校正转子不平衡的方法及其风力涡轮机。 校正方法包括测量至少一个时间窗内的振动并确定不平衡因子和不平衡相位。 然后基于不平衡因子和不平衡相位来更新用于计算校正动作的等式中的参数的值。 使用这些调整的参数来计算每个风力涡轮机叶片的校正角度。 校正角用于空气动力学平衡转子,并且可以使用模型来确定参数的初始值。 另一个不平衡因子和不平衡相位是基于另一组测量来确定的。 然后使用该不平衡因子来计算用于校正风力涡轮机叶片中的质量不平衡的质量力矩。 平衡块的重量和位置最终基于该质量矩计算并安装在相应的风力涡轮机叶片中。
    • 8. 发明申请
    • MITIGATING WIND TURBINE BLADE NOISE GENERATION IN RESPONSE TO AN ATMOSPHERIC VARIATION
    • 降低风力涡轮机叶片噪声产生对大气变化的响应
    • WO2014078773A1
    • 2014-05-22
    • PCT/US2013/070525
    • 2013-11-18
    • ELWHA LLC
    • DUNCAN, William DavidHYDE, Roderick A.TUCKERMAN, David B.WOOD, Lowell L., Jr.
    • F03D11/00F03D1/06G10K11/16
    • F03D7/0296Y02E10/721Y02E10/723
    • Described embodiments include a wind turbine system. In this embodiment, the system includes a rotor blade attached to a rotor hub drivingly coupled to an electric generator. The system includes a controllable feature configured to decrease a noise generated by the rotor blade if activated. The system includes a sensor configured to detect an atmospheric variation approaching the rotor blade. The system includes a noise manager circuit configured to authorize a noise mitigation measure responsive to the detected atmospheric variation. The system includes a control circuit configured to activate the controllable feature in response to the authorized noise mitigation measure. In an embodiment, the system includes a support structure positioning the rotor hub a sufficient distance above the ground to allow rotation of the rotor blade about the rotor hub without contacting the ground.
    • 所描述的实施例包括风力涡轮机系统。 在该实施例中,该系统包括附接到驱动地连接到发电机的转子毂的转子叶片。 该系统包括被配置为如果被激活则减小由转子叶片产生的噪声的可控特征。 该系统包括被配置为检测接近转子叶片的大气变化的传感器。 该系统包括噪声管理器电路,其被配置为响应于检测到的大气变化来授权噪声缓解措施。 该系统包括控制电路,其被配置为响应于授权的噪声缓解措施来激活可控特征。 在一个实施例中,系统包括将转子毂定位在地面上方足够距离的支撑结构,以允许转子叶片围绕转子轮毂旋转而不接触地面。