Intelligent Dual-mode Control Strategy for Extending MPPT Operation Interval of DFIG Based Wind Turbines

被引：0

作者：

Liu Q. ^{[1
]}

Gao Y. ^{[1
]}

Guo T. ^{[1
]}

Tang G. ^{[1
]}

机构：

[1] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing

来源：

Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2019年 / 43卷 / 18期

基金：

国家重点研发计划;

关键词：

Doubly-fed induction generator (DFIG); Dual-mode control; Low speed; Mode switching;

D O I：

10.7500/AEPS20190203004

中图分类号：

学科分类号：

摘要：

To extend the operation interval of maximum power point tracking (MPPT) of doubly-fed induction generator (DFIG) and improve the power generation efficiency with low wind speed interval, an intelligent dual-mode control strategy is firstly proposed. With adjustment of the strategy on the machine side converter (MSC) and the necessary switchover, the DFIG can automatically operate in two modes depending on the wind speed: the traditional DFIG mode and the stator short-circuit (SSC) mode. Then, to satisfy the requirement of short switching time and address the issues including huge impacts and long-time influences during the mode-switching process, this paper focuses on the flexible mode switching control methods, especially the specific procedure of bidirectional mode switching, MSC control strategy and the selection of generator load, which is rarely studied in previous literature. Finally, the hardware-in-the-loop experimental evaluation based on the RT-lab demonstrates that the proposed strategy effectively takes advantages of both the low cost of DFIG and the wide speed range of full-power generator, which achieves efficient and flexible switching between the two modes. © 2019 Automation of Electric Power Systems Press.

引用

页码：169 / 176

页数：7

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