Performance Improvement of Grid-Integrated Doubly Fed Induction Generator under Asymmetrical and Symmetrical Faults

Mansoor Soomro, Zubair Ahmed Memon, Mazhar Hussain Baloch, Nayyar Hussain Mirjat, Laveet Kumar (), Quynh T. Tran and Gaetano Zizzo ()
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Mansoor Soomro: Department of Electrical Engineering, Mehran University of Engineering and Technology, Jamshoro 76062, Sindh, Pakistan
Zubair Ahmed Memon: Department of Electrical Engineering, Mehran University of Engineering and Technology, Jamshoro 76062, Sindh, Pakistan
Mazhar Hussain Baloch: Department of Electronics and Communication Engineering, College of Engineering, A’Sharqiyah University, Ibra 400, North Sharqiyah Region, Oman
Nayyar Hussain Mirjat: Department of Electrical Engineering, Mehran University of Engineering and Technology, Jamshoro 76062, Sindh, Pakistan
Laveet Kumar: Department of Mechanical Engineering, Mehran University of Engineering and Technology, Jamshoro 76062, Sindh, Pakistan
Quynh T. Tran: Hawaii Natural Energy Institute, University of Hawaii at Manoa, Honolulu, HI 96822, USA
Gaetano Zizzo: Department of Engineering, University of Palermo, 90128 Palermo, Italy

Energies, 2023, vol. 16, issue 8, 1-20

Abstract: The doubly fed induction generator (DFIG)-based wind energy conversion system (WECS) suffers from voltage and frequency fluctuations due to the stochastic nature of wind speed as well as nonlinear loads. Moreover, the high penetration of wind energy into the power grid is a challenge for its smooth operation. Hence, symmetrical faults are most intense, inflicting the stator winding to low voltage, disturbing the low-voltage ride-through (LVRT) functionality of a DFIG. The vector control strategy with proportional–integral (PI) controllers was used to control rotor-side converter (RSC) and grid-side converter (GSC) parameters. During a symmetrical fault, however, a series grid-side converter (SGSC) with a shunt injection transformer on the stator side was used to keep the rotor current at an acceptable level in accordance with grid code requirements (GCRs). For the validation of results, the proposed scheme of PI + SGSC is compared with PI and a combination of PI with Dynamic Impedance Fault Current Limiter (DIFCL). The MATLAB simulation results demonstrate that the proposed scheme provides superior performance by providing 77.6% and 20.61% improved performance in rotor current compared to that of PI and PI + DIFCL control schemes for improving the LVRT performance of DFIG.

Keywords: doubly fed induction generator; wind energy conversion system; point of common coupling; low-voltage ride-through; fault current limiter; series grid-side converter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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