| CPC F03D 17/033 (2023.08) [F03D 15/101 (2023.08); F03D 17/006 (2023.08); F03D 17/017 (2023.08); F03D 17/031 (2023.08); F05B 2270/1032 (2013.01)] | 9 Claims |
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1. A method for tracking a gear tooth meshing angle of a gearbox of a wind turbine, the method comprising the steps of:
setting a reference virtual gear tooth meshing angle of the gearbox,
monitoring an angular position of a high speed shaft and/or a low speed shaft of the gearbox,
estimating a virtual gear tooth meshing angle relative to the reference virtual gear tooth meshing angle, based on the monitored angular position of the high speed shaft and/or the low speed shaft and on information regarding topology of the gearbox,
calculating a number of full rotations of the high speed shaft and/or the low speed shaft which corresponds to an integer number of full periods of gear meshing of the gearbox, based on information regarding topology of the gearbox,
resetting the reference virtual gear tooth meshing angle each time the high speed shaft and/or the low speed shaft has performed the calculated number of full rotations, and continuing monitoring the angular position of the high speed shaft and/or the low speed shaft and continuing estimating the virtual gear tooth meshing angle relative to the reference virtual gear tooth meshing angle that has been reset, and
applying the estimated virtual gear tooth meshing angle to a periodic noise signal of the wind turbine.
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