Application of Backstepping Control With Nonsingular Terminal Sliding Mode Surface Technique to Improve the Robustness of Stator Power Control of Asynchronous Generator-Based Multi-Rotor Wind Turbine System

Abstract

The conventional backstepping control (CBC) technique for the asynchronous generator (AG) incorporated in a multi-rotor wind turbine (MRWT) system faces several challenges, including torque and stator power ripples, lack of robustness, and low-quality stator currents. Furthermore, the CBC performs poorly under distorted grid voltage conditions. To address these issues, this study proposes applying backstepping nonsingular terminal sliding mode control (BNTSMC). The controller design involves incorporating a NTSMC into the control law of the CBC technique, where Lyapunov theory was used to analyze the stability of the suggested approach. The synthesis of the suggested controller revolves around two sliding mode surfaces, specifically the stator powers of the AG, which are used to determine the final control laws. The advantages of this technique are excellent robustness against internal and external disturbances based on NTSMC, and the controller exhibits asymptotic stability based on the backstepping technique. Simulation tests in MATLAB software on a 1.5 MW AG-based MRWT system clearly demonstrate the advantages of BNTSMC over CBC.

Keywords:

• Conventional backstepping control
• multi-rotor wind turbine
• nonsingular terminal sliding mode control (NTSMC)
• asynchronous generator
• variable-wind speed
• distorted grid voltage

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Adil Yahdou

Adil Yahdou received his Engineer and M.S. degrees in Electrical Engineering from the Hassiba Benbouali University of Chlef, Algeria, in 2006 and 2011, respectively. He received a PhD in Automatic from Ecole Nationale Polytechnique (ENP), Algiers, Algeria 2017. He is currently an Associate Professor at the Department of Electrical Engineering at Hassiba Benbouali University of Chlef. His research interest includes power electronics, artificial intelligence, application of robust and nonlinear control in electrical machines and wind turbine systems.

Habib Benbouhenni

Habib Benbouhenni was born in Chlef, Algeria. He is a PhD in the Departement of electrical engineering at the ENPO-MA, Oran, Algeria. He received a M.A. degree in Automatic and informatique industrial in 2017. He is currently professor with the University of Nisantasi, Turkey. He is editor of seven books and more than 200 papers in scientific fields related to electrical engineering. His research activities include the application of robust control in the wind turbine power systems.

Ilhami Colak

Ilhami Colak was born in 1962 in Turkey. He received his diploma in Electrical Engineering from Gazi University, Turkey in 1985. Then he did his MSc in Electrical Engineering in the field of Speed Control of Wound Rotor Induction Machines Using Semiconductor Devices at Gazi University in 1991. After that he did his MPhil at Birmingham University in England by preparing a thesis on High Frequency Resonant DC Link Inverters in 1991. Finally, he did his PhD at Aston University in England on Mixed Frequency Testing of Induction Machines Using Inverters in 1994. He became an assistant professor, an associate professor and a full professor in 1995, 1999 and 2005 respectively. He has published more than 108 journal papers, 239 conference papers, and 7 books in different subjects including electrical machines, drive systems, machine learning, reactive power compensation, inverter, converter, artificial neural networks, distance learning automation and alternating energy sources.

Nicu Bizon

Nicu Bizon (IEEE M’06; SM’16), was born in Albesti de Muscel, Arges county, Romania, 1961. He received the B.S. degree in electronic engineering from the University “Polytechnic” of Bucharest, Romania, in 1986, and the PhD degree in Automatic Systems and Control from the same university, in 1996. From 1996 to 1989, he was in hardware design with the Dacia Renault SA, Romania. He is currently professor with the University of Pitesti, Romania. He received two awards from Romanian Academy, in 2013 and 2016. He is editor of ten books and more than 500 papers in scientific fields related to Energy. His current research interests include power electronic converters, fuel cell and electric vehicles, renewable energy, energy storage system, microgrids, and control and optimization of these systems.