STUDY ON SPATIAL DECOUPLING OF NON-TORQUE 5-DOF LOADS IN WIND TURBINE TEST RIG USING CONJUGATE LOADING METHOD

Zhang Bo; Li Lin'an; Zeng Yantao; Li Chuanwei; Zhou Chuandi; Li Yongxue

doi:10.19912/j.0254-0096.tynxb.2024-2399

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (5) : 298-306. DOI: 10.19912/j.0254-0096.tynxb.2024-2399

STUDY ON SPATIAL DECOUPLING OF NON-TORQUE 5-DOF LOADS IN WIND TURBINE TEST RIG USING CONJUGATE LOADING METHOD

Zhang Bo¹, Li Lin'an¹, Zeng Yantao¹, Li Chuanwei¹, Zhou Chuandi², Li Yongxue³

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Abstract

Using a test rig to conduct mechanical testing on the wind turbine drive-train can effectively simulate the loading conditions the turbine experiences in complex environments. The conjugate loading method with multi-point and multi-position loading, commonly employed in the test rig for applying non-torque 5-DOF loads, exhibits strong coupling characteristics. This paper studies the spatial decoupling of loads to address the precise loading force calculation and scientific loading position problem of the conjugate loading method. A parametric model of the conjugate loading method system is established, and structural force analysis is conducted. Based on the static equilibrium relationship of the loading axis, two conversion matrix relationships between the loading force and non-torque loads are derived under full coupling and no additional moment component conditions. The spatial decoupling formula for non-torque loads is obtained, and calculations and comparative studies reveal that symmetrical placement of axial loading forces is optimal when no additional bending moment component exists. Accordingly, the conversion matrix is condensed into a square conversion matrix. Furthermore, parameter stability analysis is performed based on the condition number criterion, and parameter selection standards for engineering applications are proposed. Finally, spatial decoupling calculations and verification are conducted through static and dynamic loading case studies.

Key words

wind turbines / mechanical testing / stability / conjugate loading method / spatial decoupling / conversion matrix

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Zhang Bo, Li Lin'an, Zeng Yantao, Li Chuanwei, Zhou Chuandi, Li Yongxue. STUDY ON SPATIAL DECOUPLING OF NON-TORQUE 5-DOF LOADS IN WIND TURBINE TEST RIG USING CONJUGATE LOADING METHOD[J]. Acta Energiae Solaris Sinica. 2026, 47(5): 298-306 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2399

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