Method of identifying a fault in a system of gears in a wind turbine

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United States of America Patent

PATENT NO 11047364
APP PUB NO 20190154007A1
SERIAL NO

16098547

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method of identifying a fault in a system of gears in a wind turbine is provided. The method determines a first centre harmonic frequency amplitude according to vibrations of the system of gears and determines a plurality of sideband amplitudes of the first centre harmonic frequency amplitude. Further, the method calculates an average sideband amplitude from the plurality of sideband amplitudes and determines a value indicative of damage incurred by the system of gears based upon the first centre harmonic frequency amplitude and the average sideband amplitude. The centre harmonic frequencies may be harmonic tooth mesh frequencies and the value indicative of damage may be a ratio of the centre harmonic frequency amplitude and a difference between the centre harmonic frequency amplitude and the associated average sideband amplitude or vice versa. The method may analyse the value of any ratio obtained and use the ratio values to identify, and monitor the progress of, a fault.

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Patent Owner(s)

  • VESTAS WIND SYSTEMS A/S

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Narayanpur, Mallikarjun Karnataka, IN 2 3
Ramakrishnan, Pattabiraman Trichy Chennai, IN 2 3

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