STUDY ON ELECTROMECHANICAL COUPLING DYNAMIC CHARACTERISTICS OF LARGE WIND TURBINE GEAR TRANSMISSION SYSTEM

Wei Jing; Guo Jianpeng; Zhang Shijie; Xu Ziyang; Yan Junhui; Ji Kefeng

doi:10.19912/j.0254-0096.tynxb.2020-1339

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (8) : 300-308. DOI: 10.19912/j.0254-0096.tynxb.2020-1339

STUDY ON ELECTROMECHANICAL COUPLING DYNAMIC CHARACTERISTICS OF LARGE WIND TURBINE GEAR TRANSMISSION SYSTEM

Wei Jing¹, Guo Jianpeng¹, Zhang Shijie¹, Xu Ziyang¹, Yan Junhui², Ji Kefeng²

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Abstract

Aiming at the problem of simplifying the electrical system in the dynamic research of flexible gearbox of wind turbine, a wind turbine model with detailed electrical system and flexible transmission chain is established by taking an 8 MW permanent magnet synchronous wind turbine as the research object. Based on the model, the influence of electrical system on the dynamic characteristics of wind turbine gearbox, such as mesh stiffness, dynamic contact stress and vibration acceleration is explored. The results show that, the transmission chain will be affected by the electromagnetic damping of the generator which will slow down the response speed, but the meshing stiffness and contact stress fluctuation of each gear will be reduced. The high frequency component of angular acceleration and x-direction vibration acceleration of the gearbox are suppressed, so the vibration amplitude of the transmission chain is declined. When the wind speed change suddenly, the peak meshing force of high-speed gear decreases with the electrical system, which improves the wind turbines' ability of remaining stable.

Key words

wind turbines / gears / flexible structure / electromechanical coupling / dynamic response

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Wei Jing, Guo Jianpeng, Zhang Shijie, Xu Ziyang, Yan Junhui, Ji Kefeng. STUDY ON ELECTROMECHANICAL COUPLING DYNAMIC CHARACTERISTICS OF LARGE WIND TURBINE GEAR TRANSMISSION SYSTEM[J]. Acta Energiae Solaris Sinica. 2022, 43(8): 300-308 https://doi.org/10.19912/j.0254-0096.tynxb.2020-1339

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