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Enhancement of Dynamic Modeling for LVRT Capability in DFIG-Based Wind Turbines
Iranian Journal of Science and Technology, Transactions of Electrical Engineering ( IF 2.4 ) Pub Date : 2020-01-23 , DOI: 10.1007/s40998-020-00313-9
M. Kenan Döşoğlu

Low-voltage ride through (LVRT) is important for system compensation and reliable operation of the system during balance and unbalanced voltage dips. In this study, a new LVRT capability method was developed using active and passive compensator in doubly fed induction generator (DFIG)-based wind turbines. While the active compensator provides the control of the rotor-side converter and grid-side converters of DFIG, the passive compensator decreases the stator and rotor over currents and injects reactive power into the network to support the grid voltage DFIG. Besides, rotor electromotive force is developed to improve LVRT capability against not only symmetrical but also asymmetrical faults of DFIG. It was found that the system became stable in a short time and oscillations damped using active and passive compensator modeling.

中文翻译:

增强基于 DFIG 的风力涡轮机中 LVRT 能力的动态建模

低电压穿越 (LVRT) 对于系统补偿和系统在平衡和不平衡电压骤降期间的可靠运行非常重要。在这项研究中,在基于双馈感应发电机 (DFIG) 的风力涡轮机中使用有源和无源补偿器开发了一种新的 LVRT 能力方法。有源补偿器提供对双馈电机转子侧变流器和网侧变流器的控制,而无源补偿器减少定子和转子的过电流并向网络注入无功功率以支持电网电压双馈电机。此外,还开发了转子电动势,以提高 LVRT 对双馈电机对称和非对称故障的能力。发现系统在短时间内变得稳定并且使用有源和无源补偿器建模抑制了振荡。
更新日期:2020-01-23
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