无准确激磁电感参数下的DFIG空载并网策略及改进

作者：刘雨佳，潘再平* 日期：2010-11-16/span> 浏览：3507 查看PDF文档

无准确激磁电感参数下的DFIG空载并网策略及改进

刘雨佳，潘再平*

（浙江大学 电气工程学院，浙江 杭州 310027）

摘要：无论是正常工作还是出现故障的电网状况，双馈异步感应发电机（DFIG）的运行控制都会在很大程度上受到激磁电感参数的影响。针对激磁电感参数的准确性对空载并网有较大影响的问题，对不同激磁电感情况下的空载并网运行状态进行了分析，并在无准确激磁电感参数的情况下，通过改进控制策略来达到理想的并网条件。仿真研究结果证实了此种控制方法在并网运行中的有效性，为进一步的试验和工程应用奠定了基础。
关键词：风力发电；双馈异步感应发电机；激磁电感；并网控制
中图分类号：TM315
文献标识码：A文章编号：1001-4551(2010)09-0088-05

Noload cuttingin control strategy in doublefed induction generator without accurate magnetic inductance
LIU Yujia, PAN Zaiping
(College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)
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Abstract:The performance of doublefed induction generator(DFIG) is greatly affected by the parameter of magnetic inductance in both normal and abnormal conditions of grid. Aiming at testing the impact of the accuracy of magnetic inductance on noload cuttingin, the status of noload cuttingin with different magnetic inductance were analyzed, an improved control strategy was proposed to achieve ideal cuttingin results with an imprecise parameter of magnetic induction. The results indicate that the improved method realizes ideal cuttingin, which lays the foundation for further experiment and engineering application.
Key words: windpower; doublefed induction generator(DFIG); magnetic inductance; cuttingin control strategy