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Wind turbine diagnostic device for generator components

  • US 9,874,107 B2
  • Filed: 04/23/2015
  • Issued: 01/23/2018
  • Est. Priority Date: 04/23/2014
  • Status: Active Grant
First Claim
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1. A wind turbine diagnostic device for diagnosing mechanical damage to one or more generator components of at least one wind turbine, comprising:

  • at least one speed sensor for determining a rotational speed of a generator of the at least one wind turbine, the speed sensor having at least one speed signal output for outputting the determined rotational speed;

    a frequency analysis module with at least one speed signal input connected to the speed signal output by a speed signal line, and a frequency spectrum signal output for outputting a frequency spectrum, the frequency analysis module being configured to determine a frequency spectrum of the rotational speed; and

    a comparator having a frequency spectrum signal input connected to the frequency spectrum signal output by a frequency spectrum signal line, the comparator being configured to compare the frequency spectrum of the rotational speed with a prescribed standard frequency spectrum and to diagnose mechanical damage to the one or more generator components based on the comparison.

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