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中文摘要：
为了研究双馈风力发电系统的小干扰稳定性，文中建立了双馈风力发电系统的小信号模型。该模型以最大功率跟踪控制下的单机无穷大双馈风力发电系统作为研究对象。基于特征值和参与因子方法，分析系统振荡模式和衰减模式以及状态变量参与程度，并通过Simulink仿真验证了小信号模型的有效性。
英文摘要：
With the increasing proportion of wind power in power systems ,this paper constructs the small signal model of a grid connected doubly-fed induction generator in which the maximum power point tracking control with single-machine infinite bus system configuration is used. Based on the eigenvalue and participation factor method,this paper analyzes the state variables and the impact the oscillation modes and damping modes. The validity of the small signal model is confirmed by Simulink simulation.
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