This paper presents the development and experimental verification of the mathematical model of wind turbine and Doubly Fed Induction Generator (DFIG) using the current control and voltage estimation method between the DC link. The rotor of the induction generator (IG) is rotated with the wind turbine at a specific speed. The DFIG is directly coupled with a grid station and the synchronization between DFIG and the grid station is controlled by setting two converters: Machine Side Converter (MSC) implemented with the rotor side and Grid Side Converter (GSC) implemented with the grid. PI controllers have been utilized in the control loops and the parametric range is extracted to maximize the mechanical power transferred to the IG rotor. The model is tested under three conditions DFIG running at super synchronous speed, synchronous speed, and under synchronous speed using MATLAB Simulink. In the end, the same model is also tested through a series of experiments using lab modules. The results show that the proposed model is much simplified and accurate as compared to previous versions available in the literature.

中文翻译：

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亚同步和超同步条件下并网集成的改进电流控制双馈感应发电机模型

本文介绍了使用直流链路之间的电流控制和电压估计方法的风力涡轮机和双馈感应发电机 (DFIG) 数学模型的开发和实验验证。感应发电机（IG）的转子随着风力涡轮机以特定速度旋转。DFIG 与电网站直接耦合，DFIG 与电网站之间的同步通过设置两个转换器来控制：转子侧实现的机侧转换器 (MSC) 和电网实现的网侧转换器 (GSC)。PI 控制器已在控制回路中使用，并提取参数范围以最大化传输到 IG 转子的机械功率。模型在双馈发电机超同步转速、同步转速、并在同步速​​度下使用 MATLAB Simulink。最后，还使用实验室模块通过一系列实验对同一模型进行了测试。结果表明，与文献中可用的先前版本相比，所提出的模型更加简化和准确。