DYNAMICS OF WIND TURBINE GEAR WEAR FAULT BASED ON TOOTH PROFILE MODIFICATION AND FRICTION COUPLING

Tian De; Tao Lizhuang; Hu Yue; Li Bei

doi:10.19912/j.0254-0096.tynxb.2021-1280

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (5) : 260-269. DOI: 10.19912/j.0254-0096.tynxb.2021-1280

DYNAMICS OF WIND TURBINE GEAR WEAR FAULT BASED ON TOOTH PROFILE MODIFICATION AND FRICTION COUPLING

Tian De, Tao Lizhuang, Hu Yue, Li Bei

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Abstract

In order to quantitatively study the vibration characteristics of tooth surface wear （TSW）, a wear fault modeling method based on tooth profile modification and friction coupling is proposed, and the maximum wear depth is introduced to characterize the degree of tooth surface wear. The high-speed output shaft spur gear of the large-scale wind turbine gearbox is taken as the research object, the time-varying meshing stiffness of the gear corresponding to different degrees of wear is obtained, and it is substituted into the dynamic differential equation of the gearbox with 8 degrees of freedom. The vibration time-frequency characteristics under different wear severity and torque conditions are obtained after gearbox dynamic simulation. The results show that the simulation results are in good agreement with the relevant experimental data, which verifies the effectiveness of the method. The gearbox and the pinion vibrate more severely with the increase of tooth surface wear degree and torque. The vibration and impact load of the gearbox caused by tooth surface wear are the most obvious near 40% rated torque, which provides theoretical guidance for gear wear fault diagnosis.

Key words

wind turbines / gear box / dynamics / friction / time varying meshing stiffness / wear / tooth profile modification

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Tian De, Tao Lizhuang, Hu Yue, Li Bei. DYNAMICS OF WIND TURBINE GEAR WEAR FAULT BASED ON TOOTH PROFILE MODIFICATION AND FRICTION COUPLING[J]. Acta Energiae Solaris Sinica. 2022, 43(5): 260-269 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1280

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