HIGH-PRECISION MODELLING AND UNCERTAINTY ANALYSIS OF COMPOUND PLANETARY GEARBOX FOR WIND TURBINE

Ouyang Heng; Zhao Longda; Zhao Ying; Hou Yanbing; Wang Yi; Yuan Guangming

doi:10.19912/j.0254-0096.tynxb.2024-0080

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (5) : 485-495. DOI: 10.19912/j.0254-0096.tynxb.2024-0080

HIGH-PRECISION MODELLING AND UNCERTAINTY ANALYSIS OF COMPOUND PLANETARY GEARBOX FOR WIND TURBINE

Ouyang Heng¹, Zhao Longda¹, Zhao Ying², Hou Yanbing³, Wang Yi¹, Yuan Guangming¹

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Abstract

The compound planetary gearbox of the wind turbine is subjected to uncertainties, such as the unevenness of materials, manufacturing errors, random loads, etc., lead to inaccurate or slow calculations in its system dynamics performance analysis. To accurately reveal the uncertainty propagation law from the internal and external parameters to the output responses of the gearbox under limited data, a high-precision modelling and uncertainty analysis method for the compound planetary gearbox is developed in this paper. A high-precision simulation model of the compound planetary gearbox is established with full consideration of constraints and actual load conditions, and its accuracy is verified by through component and system dynamic tests. The intervals and non-probabilistic correlation coefficients of the multidimensional responses are obtained by adopting the performance measure approach and the non-probabilistic correlation propagation equation to establish multidimensional ellipsoidal models of output responses. The results indicate that the proposed method can accurately obtain the uncertainty boundary of the maximum equivalent stress, the deformation, and the frequencies of the compound planetary gearbox by considering the uncertainties and correlations of the material parameters. The maximum relative errors output response intervalss obtained using the performance measure approach and the Monte Carlo simulation method are less than 1%. Additionally, the correlation coefficients among the responses by applying the non-probabilistic correlation propagation equation and the correlation approximation method are basically the same. By combining the intervals and non-probabilistic correlation coefficients, the multidimensional ellipsoidal models for the responses are accurately established.

Key words

wind turbines / uncertainty analysis / dynamic analysis / performance measure approach / non-probabilistic correlation propagation equation

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Ouyang Heng, Zhao Longda, Zhao Ying, Hou Yanbing, Wang Yi, Yuan Guangming. HIGH-PRECISION MODELLING AND UNCERTAINTY ANALYSIS OF COMPOUND PLANETARY GEARBOX FOR WIND TURBINE[J]. Acta Energiae Solaris Sinica. 2025, 46(5): 485-495 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0080

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