ANALYSIS OF COUPLING EFFECT OF MAINDRIVE CHAIN SYSTEM OF WIND TURBINE ON SYSTEM CHARACTERISTICS

Fei Xiang; Jiang Hong; Zhou Jianxing; Zhang Xiangfeng; Shang Jun

doi:10.19912/j.0254-0096.tynxb.2023-1996

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (4) : 387-397. DOI: 10.19912/j.0254-0096.tynxb.2023-1996

ANALYSIS OF COUPLING EFFECT OF MAINDRIVE CHAIN SYSTEM OF WIND TURBINE ON SYSTEM CHARACTERISTICS

Fei Xiang, Jiang Hong, Zhou Jianxing, Zhang Xiangfeng, Shang Jun

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Abstract

Aiming at the coupling response of each subsystem in wind turbine transmission chain during operation, taking the main transmission system of a 2 MW wind turbine as the research object, considering the time-varying meshing stiffness of gears and the effect of error excitation, a dynamic model of planet-fixed axis coupling system considering the flexibility of axes was established. By Solving the natural frequency based on the eigenvalue problem was solved to describe the influence of coupling effect on the inherent characteristics of the sub-system and the mode characteristics of the system. The Newmark time-domain integral method was used to solve the system dynamics equations before and after coupling, and the changing law of system dynamic characteristics before and after connecting the subsystems were investigated. The results show that the unique vibration modes of the planetary transmission system and the fixed shaft transmission system are still retained in the modal shapes of the wind power main transmission system, and most vibration modes show the coupling between the single vibration modes of multiple subsystems or several vibration modes of the parallel transmission system. The coupling effect causes the fluctuation of each subsystem to increase, and the engage frequency of epicyclic transmission and its frequency doubling component appear in large numbers in the low frequency band of parallel transmission.

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wind turbines / dynamic modding / vibration response / model analysis / coupling effect

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Fei Xiang, Jiang Hong, Zhou Jianxing, Zhang Xiangfeng, Shang Jun. ANALYSIS OF COUPLING EFFECT OF MAINDRIVE CHAIN SYSTEM OF WIND TURBINE ON SYSTEM CHARACTERISTICS[J]. Acta Energiae Solaris Sinica. 2025, 46(4): 387-397 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1996

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