发明名称 |
Wind turbine generator, active damping method thereof, and windmill tower |
摘要 |
A wind turbine generator, an active damping method thereof, and a windmill tower in which vibrations of the wind turbine generator itself or the windmill tower can be reduced at low cost are provided. The acceleration due to vibrations of a nacelle is detected with an accelerometer attached to the nacelle. In an active damping unit, a pitch angle of windmill blades for generating a thrust on the windmill blades so as to cancel out the vibrations of the nacelle is calculated on the basis of the acceleration, and the pitch angle is output as a blade-pitch-angle commandδθ* for damping. On the other hand, in a pitch-angle control unit, a pitch angle of the windmill blades for controlling the output to be a predetermined value is calculated, and the pitch angle is output as a blade-pitch-angle commandθ* for output control. The blade-pitch-angle commandδθ* for damping is combined with the blade-pitch-angle commandθ* for output control using a subtracter. The pitch angle of the windmill blades is controlled on the basis of the resulting blade-pitch-angle command after combining.
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申请公布号 |
US8299643(B2) |
申请公布日期 |
2012.10.30 |
申请号 |
US201113220121 |
申请日期 |
2011.08.29 |
申请人 |
WAKASA TSUYOSHI;IDE KAZUNARI;HAYASHI YOSHIYUKI;SHIBATA MASAAKI;MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
WAKASA TSUYOSHI;IDE KAZUNARI;HAYASHI YOSHIYUKI;SHIBATA MASAAKI |
分类号 |
F03D9/00;F03D7/04;H02P9/04 |
主分类号 |
F03D9/00 |
代理机构 |
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