平衡正弦电压下双馈感应发电机的谐波和功率

S. Schostan, K.-D. Dettmann, Ilir Purellku, D. Schulz
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引用次数: 12

摘要

馈入电网的风能变流器必须符合谐波标准。实际上,由于电网本身也是扭曲的,因此发电机产生的谐波或次谐波很难测量。本文描述了用理想的平衡正弦电压源代替栅极进行的试验台测量。结果显示了发电机和变流器产生的重要频率以及它们与电网的相互作用。解释了这些频率的来源。计算了定子侧集体功率分量,研究了它们对三相系统定子电流时变不对称性的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Harmonics and powers of doubly fed induction generators at balanced sinusoidal voltages
Wind energy converters feeding into the power grid must comply with standards for harmonics. In practice harmonics or subharmonics caused by the generator are difficult to measure, because the grid itself is also distorted. This paper describes test-bench measurements that are performed with an ideal balanced and sinusoidal voltage source instead of a grid. The results show, which significant frequencies the generator and the converter produce and how they interact with the grid. Sources for these frequencies are explained. The stator side collective power components are calculated and their effect on the time variable asymmetry of the stator current of the three-phase system is investigated.
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