DYNAMIC MESHING CHARACTERISTIC RESEARCH OF PLANETARY GEAR SYSTEM OF WIND TURBINE CONSIDERING FLEXIBILITY OF RING GEAR

Wang Yefeng; Zhou Jianxing; Xu Huachao; Wang Chenglong; Xie Gaomin; Yao Jun

doi:10.19912/j.0254-0096.tynxb.2021-0991

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (1) : 325-334. DOI: 10.19912/j.0254-0096.tynxb.2021-0991

DYNAMIC MESHING CHARACTERISTIC RESEARCH OF PLANETARY GEAR SYSTEM OF WIND TURBINE CONSIDERING FLEXIBILITY OF RING GEAR

Wang Yefeng, Zhou Jianxing, Xu Huachao, Wang Chenglong, Xie Gaomin, Yao Jun

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Abstract

Aiming at the problem that the lumped parameter method is difficult to consider the flexibility of gear ring and the finite element method has a large amount of calculation, an analytical method to reveal the extended tooth contact phenomenon of internal gear pair was proposed based on the lumped parameter/finite element method for the planetary gear system of wind turbine. Firstly, the dynamic model of the wind turbine planetary gear system was established by the method of lumped parameter, and the dynamic meshing force was obtained by solving the solution. Then, the finite element model of the internal gear pair of the planetary gear system was established by using finite element method, and the static contact analysis was carried out to obtain the deformation threshold of the internal gear pair when multiple teeth meshed at each meshing position. Finally, the dynamic meshing force obtained from the lumped parameter model exerted on the ring gear finite element model to calculate the dynamic response of the ring gear, and combined with multiple teeth meshing deformation threshold, which revealed under different load and support number the area distribution of multiple teeth meshing of ring gear, obtained the contact stress and tooth root stress, analyses the influence of stress of meshing teeth number change. The results show that, considering the flexibility of the gear, the contact between internal gear pair will occur to other teeth pairs except the theoretical contact teeth. With the increase of load torque, three teeth meshing on the ring gear first occurs on both sides of the support, and then the area of three teeth meshing increases continuously. When the meshing between the planet gear and the ring gear changes from the theoretical two-tooth meshing to the three-tooth meshing due to deformation, the contact stress and the tooth root stress will be less than the stress value when only the two teeth meshing are included in the same time.

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wind turbines / planetary gear system / finite element method / dynamic meshing characteristic / contact stress

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Wang Yefeng, Zhou Jianxing, Xu Huachao, Wang Chenglong, Xie Gaomin, Yao Jun. DYNAMIC MESHING CHARACTERISTIC RESEARCH OF PLANETARY GEAR SYSTEM OF WIND TURBINE CONSIDERING FLEXIBILITY OF RING GEAR[J]. Acta Energiae Solaris Sinica. 2023, 44(1): 325-334 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0991

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