NDLI: Modified switch type fault current limiter for low-voltage ride-through enhancement and reactive power support of DFIG-WT under grid faults

Content Provider	IET Digital Library
Author	Asghar, Rafiq Rehman, Faisal Ullah, Zahid Aman, Ali Iqbal, Kashif Nawaz, Agha Ali
Abstract	The sudden voltage drop may upsurge the current level and trigger the self-protective system to disconnect the wind turbines that are detrimental for grid constancy. A novel structure of a modified switch type fault current limiter (M-STFCL) is proposed that protects the doubly-fed induction generator wind turbine (DFIG-WT) during the symmetrical and asymmetrical grid faults. The M-STFCL is cost-effective and requires little maintenance during operation. The proposed system maintains the rotor current and DC-link voltage below the maximum acceptable limits, thus, fortify the back-back converters. The M-STFCL is tested with both the sliding-mode control (SMC) and proportional–integral (PI) controller and their results are compared. From the simulation results, it is obvious that SMC has edged over the PI controller and demonstrated superior control over the critical parameters. The performance of M-STFCL is also compared with the conventional switch type fault current limiter and the analytical results clearly validate the significance of the proposed system.
Starting Page	1481
Ending Page	1490
Page Count	10
ISSN	17521416
Volume Number	14
e-ISSN	17521424
Issue Number	Issue 9, Jul (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/14/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2019.1058
Journal	IET Renewable Power Generation
Publisher Date	2020-03-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Asymmetrical Grid Fault Asynchronous Generator Asynchronous Machine Control of Electric Power System Conventional Switch Type Fault Current Limiter DFIG-WT Fault Current Limiters Grid Constancy Induction Generator Wind Turbine Low-voltage Ride-through Enhancement M-STFCL Maximum Acceptable Limits Modified Switch Type Fault Current Limiter Multivariable Control System PI Control Power Generation Control Power Generation Fault Power Grid Protection Apparatus Reactive Power Support Rotor Rotors Self-protective System Sudden Voltage Drop Symmetrical Grid Fault Variable Structure System Wind Power Plant Wind Turbine
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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