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    • 9. 发明申请
    • WIND TURBINE BLADE VIBRATION DETECTION AND RADAR CALIBRATION
    • 风力涡轮机叶片振动检测和雷达校准
    • US20160215763A1
    • 2016-07-28
    • US14704744
    • 2015-05-05
    • VESTAS WIND SYSTEMS A/S
    • Knut VANGENEric MEUMJan PLEYM
    • F03D17/00G01S7/40G01S13/58F03D1/06
    • F03D17/00F03D1/0675F03D7/0296F03D7/04F05B2240/912F05B2270/17F05B2270/33F05B2270/334F05B2270/805G01S7/4004G01S13/505G01S13/582G01S13/583G01S13/584G01S13/589G01S13/64G01S13/87G01S13/88Y02B10/30Y02E10/721Y02E10/723Y02E10/728Y02P70/523
    • A wind turbine is provided, having a wind turbine tower and at least one rotatable blade, and further comprising a system for measuring rotor blade vibration of said wind turbine. The system comprises at least one Doppler radar unit operatively configured to emit and receive radar signals, the radar unit being mounted on the wind turbine tower at a position above the lowest position of the at least one blade, the radar unit being positioned so as to measure reflections of an emitted radar signal from the turbine blade. A processing unit is configured to receive measurement data from the radar unit and to determine, by analysis of Doppler shift in received radar signals relative to transmitted signals due to movement of the blade towards or away from the turbine tower, the velocity of the blade in the direction towards or away from the turbine tower. Using a radar unit to measure blade velocity allows a determination to be made of the vibrations occurring in the blade without needing an internal sensor in the blade. This reduces manufacturing and maintenance costs of the blades since sensors in the blades will not need to be replaced, and sensors positioned on the tower are easier to replace in the field.
    • 提供了具有风力涡轮机塔架和至少一个可旋转叶片的风力涡轮机,还包括用于测量所述风力涡轮机的转子叶片振动的系统。 所述系统包括至少一个多普勒雷达单元,其被可操作地配置为发射和接收雷达信号,所述雷达单元在所述至少一个叶片的最低位置上方的位置处安装在所述风力涡轮机塔架上,所述雷达单元被定位成 测量来自涡轮叶片的发射的雷达信号的反射。 处理单元被配置为从雷达单元接收测量数据,并且通过分析由于叶片朝向或远离涡轮塔的移动而相对于传输的信号的接收的雷达信号中的多普勒频移,确定叶片的速度 朝向或远离涡轮塔的方向。 使用雷达单元来测量叶片速度允许确定在叶片中发生的振动,而不需要叶片中的内部传感器。 这样可以降低叶片的制造和维护成本,因为叶片中的传感器不需要更换,位于塔架上的传感器在现场更容易替代。