Method and device for judging fault of wind electricity doubly-fed generator rolling bearing
A technology of doubly-fed generators and rolling bearings, applied in the direction of mechanical bearing testing, etc., can solve the problems of failure of doubly-fed generator bearings and other components, unfavorable maintenance, and inability to determine the degree of bearing failure.
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[0062] Such as figure 1 As shown, the implementation steps of the method for determining the rolling bearing fault of the doubly-fed generator for wind power in this embodiment are as follows:
[0063] 1) Detect the acceleration signal at the drive end and the acceleration signal at the non-drive end of the doubly-fed generator when it is running.
[0064] In this embodiment, the acceleration sensors respectively installed at the drive end and the non-drive end of the doubly-fed generator are used to detect the acceleration signals of the drive end and the non-drive end of the doubly-fed generator when the doubly-fed generator is running. Such as figure 2 As shown, the frame 1 of the current common doubly-fed generator is supported and fixed on the base 7. A shaft 6 is inserted in the frame 1, and the left side (non-driving end) and the right side (driving end) of the shaft 6 pass through The bearing outer ring of a roller bearing 5 is connected and matched with the end cover 4 o...
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