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Fault Ride-Through Improvement of DFIG-WT by Integrating a Two-Degrees-of-Freedom Internal Model Control

机译:通过集成两个自由度的内部模型控制来改进DFIG-WT的故障穿越

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摘要

A novel two-degree-of-freedom internal model control (IMC) controller that improves the fault ride-through (FRT) capabilities and crowbar dynamics of doubly fed induction generator (DFIG) wind turbines is presented. As opposed to other control strategies available in the open literature, the proposed IMC controller takes into account the power limit characteristic of the DFIG back-to-back converters and their dc-link voltage response in the event of a fault and consequent crowbar operation. Results from a digital model implemented in Matlab/Simulink and verified by a laboratory scale-down prototype demonstrate the improved DFIG FRT performance with the proposed controller.
机译:提出了一种新颖的两自由度内部模型控制(IMC)控制器,该控制器可提高双馈感应发电机(DFIG)风力涡轮机的故障穿越(FRT)能力和撬杠动力学性能。与公开文献中提供的其他控制策略相反,建议的IMC控制器考虑了DFIG背对背转换器的功率极限特性及其在出现故障和随后的撬棍操作时的直流链路电压响应。在Matlab / Simulink中实现的数字模型的结果并通过实验室按比例缩小的原型进行了验证,结果表明,所提出的控制器可改善DFIG FRT性能。

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