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Method and arrangement for detecting a blade pitch angle unbalance of a rotor blade system of a wind turbine
Method and arrangement for detecting a blade pitch angle unbalance of a rotor blade system of a wind turbine
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机译:用于检测风力涡轮机的转子叶片系统的叶片桨距角不平衡的方法和装置
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#$%^&*AU2011253963A120120927.pdf#####METHOD AND ARRANGEMENT FOR DETECTING A BLADE PITCH ANGLE UNBALANCE OF A ROTOR BLADE SYSTEM OF A WIND TURBINE Abstract 5 It is described a method and an arrangement for detecting a blade pitch angle unbalance of a rotor blade system of a wind turbine, the rotor blade system rotating around a rotor rotation axis, the method comprising: yawing the rotor rotation axis about a yawing axis transverse, in particular perpendicular, to the rotor rotation axis; obtaining a load signal (y) indicative of a load due to the yawing; analyzing the load signal regarding 1o a frequency component (fl) of the load signal; and detecting the blade pitch angle unbalance based on the analysed load signal. (Figure 1)1/5 LCD ---.------------- --------- --- - --- -----LO) - I-- -- - - - - - -- -- ------ ----------- -- - -cny CCD IJ -------A ------- d p I -- --- --
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