Detecting faults in wind turbines

Qiao, Wei; Wang, Jun; Qu, Liyan

Detecting faults in wind turbines

Patent · 01 December 2020

OSTI ID:1771687

Qiao, Wei; Wang, Jun; Qu, Liyan

A wind turbine generator fault detection method is described. The method includes obtaining a first signal from a generator of a wind turbine and a second signal from a vibration sensor coupled to the wind turbine, the first signal representing an output current of the generator, and the second signal being a time-sampled signal representing vibrations of a bearing in the wind turbine. Determining a shaft rotation frequency signal from the first signal, the shaft rotation frequency signal representing a time-varying rotational speed of a shaft of the wind turbine. Resampling an envelope of the second signal based on the shaft rotation frequency signal to provide a third signal, the third signal being an angular sampled signal. Detecting, by the at least one processor, a fault in the bearing of the wind turbine by identifying a characteristic signature of a bearing fault in the third signal.

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Research Organization:: NUtech Ventures, Lincoln, NE (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: EE0006802

Assignee:: NUtech Ventures (Lincoln, NE)

Patent Number(s):: 10,852,214

Application Number:: 15/985,226

OSTI ID:: 1771687

Country of Publication:: United States

Language:: English

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