Guaranteed Performance Control of DFIG Variable-Speed Wind Turbines
Guaranteed Performance Control of DFIG Variable-Speed Wind Turbines
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DOI：
10.1109/tcst.2016.2524531
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发表时间：
2016-02
影响因子：
4.8
通讯作者：
Wenchao Meng;Qinmin Yang;Youxian Sun
中科院分区：
文献类型：
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作者：
Wenchao Meng;Qinmin Yang;Youxian Sun
本简介介绍了一种针对配备双馈感应发电机 (DFIG) 的变速风力涡轮机的新型功率控制策略。控制目标是优化从风中提取的功率，同时调节定子无功功率以满足电网要求。首先，为了优化提取的功率，设计了自适应控制技术来驱动电磁扭矩遵循最大功率点跟踪算法生成的参考值。随后，为了满足电网侧的无功功率要求，提出了一种自适应无功功率控制器来控制定子无功功率以遵循电网确定的给定的期望无功功率。与大多数现有研究相比，我们能够量化并进一步保证系统在瞬态和稳态阶段的性能。闭环系统中的所有信号均通过标准李亚普诺夫合成证明是有界的。最后，使用国家可再生能源实验室开发的 FAST（疲劳、空气动力学、结构和湍流）模拟器在 1.5 MW DFIG 风力涡轮机上验证了所提出方案的有效性。
This brief presents a novel power control strategy for variable-speed wind turbines equipped with doubly fed induction generators (DFIGs). The control objective is to optimize the extracted power from wind while regulating the stator reactive power to meet grid requirements. First, in order to optimize the extracted power, an adaptive control technique is designed to drive the electromagnetic torque to follow its reference generated by the maximum power point tracking algorithm. Subsequently, aiming at satisfying reactive power requirements on the grid side, an adaptive reactive power controller is proposed to manipulate the stator reactive power to follow a given desired reactive power determined by the grid. Compared with most existing studies, we are capable of quantifying and further guaranteeing the system performance on both transient and steady-state stages. All signals in the closed-loop system are proved to be bounded via standard Lyapunov synthesis. Finally, the effectiveness of the proposed scheme is validated on a 1.5-MW DFIG-based wind turbine using the FAST (Fatigue, Aerodynamics, Structures, and Turbulence) simulator developed by the National Renewable Energy Laboratory.