A Fault Tolerant Doubly Fed Induction Generator Wind Turbine Using a Parallel Grid Side Rectifier and Series Grid Side Converter
A Fault Tolerant Doubly Fed Induction Generator Wind Turbine Using a Parallel Grid Side Rectifier and Series Grid Side Converter
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DOI：
10.1109/tpel.2008.921179
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发表时间：
2008-05
影响因子：
6.7
通讯作者：
P. Flannery;G. Venkataramanan
中科院分区：
文献类型：
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作者：
P. Flannery;G. Venkataramanan
随着风力涡轮机普及率的稳步提高，电网互连的监管标准已经发展到要求风力发电系统能够克服故障等干扰，并在此类事件期间为电网提供支持。为了提供穿越而对双馈感应发电 (DFIG) 架构进行的传统修改会导致故障事件期间对涡轮机轴和电网电流的控制受到影响。在 DFIG 架构中，电网侧变流器与电网串联连接，而不是并联连接，该架构显示出改善的低电压穿越能力，但功率处理能力较差。本文提出了一种采用并联网侧整流器和串联网侧变流器的统一双馈风力发电机架构。这两个转换器的组合可实现不受阻碍的功率处理和强大的电压干扰穿越能力。开发了该架构的动态模型和控制结构。使用计算机模拟来说明系统的操作。
With steadily increasing wind turbine penetration, regulatory standards for grid interconnection have evolved to require that wind generation systems ride-through disturbances such as faults and support the grid during such events. Conventional modifications to the doubly fed induction generation (DFIG) architecture for providing ride-through result in compromised control of the turbine shaft and grid current during fault events. A DFIG architecture in which the grid side converter is connected in series as opposed to parallel with the grid connection has shown improved low voltage ride through but poor power processing capabilities. In this paper, a unified DFIG wind turbine architecture which employs a parallel grid side rectifier and series grid side converter is presented. The combination of these two converters enables unencumbered power processing and robust voltage disturbance ride through. A dynamic model and control structure for this architecture is developed. The operation of the system is illustrated using computer simulations.