A transient reactive current compensation strategy for load-side converters of brushless doubly-fed generator in stand-alone operation

被引：0
|
作者：
Wang Z. [1 ]
Lin H. [1 ]
Wang X. [1 ]
机构：
[1] College of Electric and Electronic Engineering, Huazhong University of Science & Technology, Wuhan, 430074, Hubei Province
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2016年 / 36卷 / 15期
关键词：
Brushless doubly-fed generator (BDFG); Doubly-fed generation system; Reactive current compensation; Stand-alone operation; Transient process;
D O I：
10.13334/j.0258-8013.pcsee.151704
中图分类号：
学科分类号：
摘要：
When a resistive-inductive load was suddenly connected to the stand-alone brushless doubly-fed generation system, the transient voltage sag of stator power windings may be too heavy to satisfy the requirements of power quality, so the reactive load current was compensated through the load-side converter to reduce the transient voltage sag and to quicken the recovery process. This paper analyzed the transient characteristic of reactive load currents and generator terminal voltages when a resistive-inductive load was suddenly connected, and pointed out that the imbalance of generator terminal voltages would become heavier if the transient component of the reactive load currents was compensated, and proposed a strategy that only the steady component of reactive load currents was compensated in the transient process. The detection rapidity of the steady component of reactive currents was enhanced by using the improved reactive current detecting algorithm and moving average filters. The experimental results validate the proposed compensation strategy. © 2016 Chin. Soc. for Elec. Eng.
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页码：4242 / 4248
页数：6
相关论文
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