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| Review of Operation Technology of Doubly-Fed Induction Generator-Based Wind Power System under Nonideal Grid Conditions |
| Wang Tao1, Zhu Ziqiang1, Nian Heng2 |
1. Department of Electronic and Electrical Engineering University of Sheffield Sheffield S10 2TN United Kingdom;
2. College of Electrical Engineering Zhejiang University Hangzhou 310027 China |
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Abstract In recent years, with increasing complex grid environment and growing wind power penetration, the operation technique of doubly fed induction generator (DFIG) under nonideal grid conditions, including harmonic distortion, voltage unbalance, and voltage dip, has been a research hotspot. Under harmonic distorted and unbalanced grid conditions, some enhanced control strategies can be used to improve the performance of the DFIG itself or to benefit the power quality at the point of common coupling. When the grid voltage dips, protecting measures based on software or hardware are required to keep the DFIG connected to the grid and support the voltage restoration by providing reactive power. In this paper, the existing researches in the aforementioned fields are reviewed. Different technical solutions for DFIG operating under non-ideal grid conditions are compared, then the technical trends and potential research topics are discussed and prospected.
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Received: 07 May 2019
Published: 12 February 2020
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2020, Vol. 35 
