A Super Twisting Fractional Order Terminal Sliding Mode Control for DFIG-Based Wind Energy Conversion System

Irfan Sami, Shafaat Ullah, Zahoor Ali, Nasim Ullah and Jong-Suk Ro
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Irfan Sami: School of Electrical and Electronics Engineering, Chung-Ang University, Dongjak-gu, Seoul 06974, Korea
Shafaat Ullah: Department of Electrical and Computer Engineering, Comsats University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
Zahoor Ali: CECOS University of IT and Emerging Sciences, Peshawar 25100, Pakistan
Nasim Ullah: Department of Electrical Engineering, College of Engineering, Taif University KSA, Taif 21974, Saudi Arabia
Jong-Suk Ro: School of Electrical and Electronics Engineering, Chung-Ang University, Dongjak-gu, Seoul 06974, Korea

Energies, 2020, vol. 13, issue 9, 1-20

Abstract: The doubly fed induction generator (DFIG)-based wind energy conversion systems (WECSs) are prone to certain uncertainties, nonlinearities, and external disturbances. The maximum power transfer from WECS to the utility grid system requires a high-performance control system in the presence of such nonlinearities and disturbances. This paper presents a nonlinear robust chattering free super twisting fractional order terminal sliding mode control (ST-FOTSMC) strategy for both the grid side and rotor side converters of 2 MW DFIG-WECS. The Lyapunov stability theory was used to ensure the stability of the proposed closed-loop control system. The performance of the proposed control paradigm is validated using extensive numerical simulations carried out in MATLAB/Simulink environment. A detailed comparative analysis of the proposed strategy is presented with the benchmark sliding mode control (SMC) and fractional order terminal sliding mode control (FOTSMC) strategies. The proposed control scheme was found to exhibit superior performance to both the stated strategies under normal mode of operation as well as under lumped parametric uncertainties.

Keywords: wind energy conversion system (WECS); doubly fed induction generator (DFIG); sliding mode control (SMC); fractional order control (FOC); super twisting sliding mode control (STSMC); terminal sliding mode control (TSMC); fractional order terminal sliding mode control (FOTSMC) (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: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (15)

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