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Research of modelling and nonlinear dynamic analysis for drive system of wind turbine generator

机译:风力发电机驱动系统建模与非线性动力学分析研究

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摘要

Using the Lagrange principle, the nonlinear dynamical equation of wind turbine generator drive system is presented, which considers nonlinear stiffness of the drive system. The stability of autonomous system is analysed by the Jacobian matrix. The stability of wind turbine generator drive system is analysed by using bifurcation and chaos theories. Finally, a numerical method is employed to describe the process of chaotic motion that the wind turbine generator drive system enters into chaos motion via period-doubling bifurcation by time domain waveform, phase trajectory and Poincare map, and to analyse the effects of nonlinear factors on the stability of the system by bifurcation diagram.
机译:利用拉格朗日原理,提出了考虑驱动系统非线性刚度的风力发电机驱动系统非线性动力学方程。自治系统的稳定性通过雅可比矩阵分析。利用分岔和混沌理论分析了风力发电机驱动系统的稳定性。最后,采用数值方法描述了风轮发电机驱动系统通过时域波形,相位轨迹和庞加莱图经倍增周期分叉进入混沌运动的过程,并分析了非线性因素对混沌运动的影响。分叉图显示系统的稳定性。

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