采用减小电流传感器的独立DFIG系统馈入不平衡负载的改进控制算法

Proceedings of The 7th International Power Electronics and Motion Control Conference Pub Date : 2012-06-02 DOI:10.1109/IPEMC.2012.6259030

Ngoc-Tung Nguyen, T. Chun, Hong‐Hee Lee

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引用次数: 3

摘要

本文提出了一种采用减小定子侧电流传感器的不平衡负载单机DFIG系统的增强控制算法。不平衡负载经常导致定子电流/电压不平衡，转子电流含有谐波成分。为了克服这一问题，研究了一种基于负载侧变换器(LSC)的控制方法。该控制方法通过产生LSC线路电流的负序分量来补偿不平衡的定子电流。此外，仅使用转子电流作为反馈信号来补偿不平衡的定子电流。这样，安装在负载侧和定子侧的电流传感器就完全被去掉了，从而减少了系统中电流传感器的数量。仿真和实验结果验证了该方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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An enhanced control algorithm for stand-alone DFIG system feeding unbalanced loads with reduced current sensors

This paper presents an enhanced control algorithm for stand-alone DFIG system under unbalanced load condition with reduced current sensors at stator side. The unbalanced load regularly causes the stator current/voltage unbalance and the rotor current contains harmonic components. In order to overcome this problem, a control method is investigated based on the load side converter (LSC). In this control method, the negative sequence components of the line current of LSC are generated to compensate the unbalanced stator current. In addition, only the rotor current is used as the feedback signal to compensate the unbalanced stator current. Thus, the current sensors installed at load and stator side are totally removed, so that the number of current sensors employed in system is reduced. The simulation and experimental results are provided to verify the effectiveness of the proposed method.

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Proceedings of The 7th International Power Electronics and Motion Control Conference

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