NDLI: Flicker mitigation strategy for a doubly fed induction generator by torque control

Content Provider	IET Digital Library
Author	Zhang, Yunqian Hu, Weihao Chen, Zhe Cheng, Ming Hu, Yanting
Abstract	Owing to the rotational sampling of turbulence, wind shear and tower shadow effects grid connected variable speed wind turbines could lead to the power fluctuations which may produce flicker during continuous operation. A model of an megawatt (MW)-level variable speed wind turbine with a doubly fed induction generator is presented to investigate the flicker mitigation. Taking advantage of the large inertia of the wind turbine rotor, a generator torque control (GTC) strategy is proposed, so that the power oscillation is stored as the kinetic energy of the wind turbine rotor, thus the flicker emission could be reduced. The GTC scheme is proposed and designed according to the generator rotational speed. The simulations are performed on the national renewable energy laboratory 1.5 MW upwind reference wind turbine model. Simulation results show that damping the generator active power by GTC is an effective means for flicker mitigation of variable speed wind turbines during continuous operation.
Starting Page	91
Ending Page	99
Page Count	9
ISSN	17521416
Volume Number	8
e-ISSN	17521424
Issue Number	Issue 2, Mar (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/8/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2013.0029
Journal	IET Renewable Power Generation
Publisher Date	2013-09-17
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Asynchronous Generator Asynchronous Machine Continuous Operation Control of Electric Power System Doubly Fed Induction Generator Flicker Emission Flicker Mitigation Strategy Generator Active Power Generator Torque Control GTC Strategy Kinetic Energy Mechanical Variables Control Megawatt-level Variable Speed Wind Turbine Oscillation Power Generation Control Power Oscillation Torque Control Tower Shadow Effect Grid Connected Variable Speed Wind Turbines Turbulence Upwind Reference Wind Turbine Model Variable Speed Wind Turbines Wind Power Plant Wind Shear Wind Turbine Wind Turbine Rotor
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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