ORDER TRACKING AND FAULT DIAGNOSIS OF DOUBLY-FED WIND TURBINE GEARBOX BASED ON ROTOR WINDING CURRENT

Wang Chengyu; Wan Shuting; Wang Xuan; Zhang Bolin; Zhao Xiaoyan

doi:10.19912/j.0254-0096.tynxb.2023-1703

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (2) : 556-564. DOI: 10.19912/j.0254-0096.tynxb.2023-1703

ORDER TRACKING AND FAULT DIAGNOSIS OF DOUBLY-FED WIND TURBINE GEARBOX BASED ON ROTOR WINDING CURRENT

Wang Chengyu, Wan Shuting, Wang Xuan, Zhang Bolin, Zhao Xiaoyan

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Abstract

In response to the prevalent challenges of diagnosing gearbox faults in wind turbine systems under variable speed conditions using vibration signals, this paper proposes a novel method based on rotor winding current for order tracking and fault diagnosis in doubly-fed wind turbine gearboxes. Initially, the rotor winding current of the doubly-fed induction wind generator （DFIG） is processed using an optimized variational mode decomposition algorithm, obtaining the filtered current signal. Then, a synchronous extraction transformation method is applied for time-frequency analysis of the rotor winding current. Based on the time-frequency ridge line of the extracted current signal and the estimated rotation frequency principle of the rotor winding current, the instantaneous rotation frequency of the DFIG rotor is calculated. According to the transmission ratio between gearboxes, the rotation frequency of the output shaft bearing of the planetary gearbox is derived. Finally, the collected vibration signals from the planetary gearbox are resampled at equal angles, and through the obtained steady-state angular domain signals, envelope order spectrum analysis is performed to achieve fault diagnosis of gearboxes in doubly-fed wind turbine units.

Key words

wind turbines / gearbox / fault diagnosis / order tracking / rotor winding current

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Wang Chengyu, Wan Shuting, Wang Xuan, Zhang Bolin, Zhao Xiaoyan. ORDER TRACKING AND FAULT DIAGNOSIS OF DOUBLY-FED WIND TURBINE GEARBOX BASED ON ROTOR WINDING CURRENT[J]. Acta Energiae Solaris Sinica. 2025, 46(2): 556-564 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1703

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