ANALYSIS OF TEMPERATURE FIELD AND DYNAMIC CHARACTERISTICS FOR WIND TURBINE GEARBOX

Li Dianpeng; Zhou Jianxing; Cui Quanwei; Fei Xiang; Wang Yuchen; Chen Feng

doi:10.19912/j.0254-0096.tynxb.2025-0616

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (8) : 790-799. DOI: 10.19912/j.0254-0096.tynxb.2025-0616

ANALYSIS OF TEMPERATURE FIELD AND DYNAMIC CHARACTERISTICS FOR WIND TURBINE GEARBOX

Li Dianpeng¹, Zhou Jianxing¹, Cui Quanwei¹, Fei Xiang¹, Wang Yuchen¹, Chen Feng²

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Abstract

Aiming at the problem of lubricating oil failure caused by excessive tooth surface temperature in the planetary gear system, taking the 6 MW wind turbine as the research object, and comprehensively considering the influence of factors such as the time-varying stiffness of gears and bearings on the system, a translation-torsion multi-degree-of-freedom dynamic model is constructed. Based on heat transfer theory, the tooth surface of a single-tooth model is divided into several strip regions using a differential method, elucidating the impact of different strip quantities, rotational speeds, and loads on the temperature field. Simultaneously, integrating frictional heat generation and heat dissipation characteristics, a dynamic temperature field numerical analysis model is established. The validity of the model is verified through finite element method solutions and comparison with experimental results. The findings indicate that the number of strip divisions affects the accuracy of the temperature field, with the distribution stabilizing when the number of strips exceeds 50. High-temperature regions in the temperature field are concentrated in the inner ring of bearings and gear meshing surfaces, with the sun gear exhibiting significantly higher temperature rise than that of planetary gears and the internal gear ring. The impact of temperature rise in bearings and tooth surfaces increases with rotational speed, with the rate of temperature rise gradually decreasing, showing a logarithmic relationship between temperature rise and rotational speed.

Key words

wind turbines / gearbox / finite element method / heat flux density / thermal analysis / temperature field

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Li Dianpeng, Zhou Jianxing, Cui Quanwei, Fei Xiang, Wang Yuchen, Chen Feng. ANALYSIS OF TEMPERATURE FIELD AND DYNAMIC CHARACTERISTICS FOR WIND TURBINE GEARBOX[J]. Acta Energiae Solaris Sinica. 2026, 47(8): 790-799 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0616

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