Improved DFIG DFTC by using a fractional-order super twisting algorithms in wind power applications


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Abstract

Background: The direct flux and torque control are a robust, simple, and alternative approach control formulation that does not require decomposition into symmetrical components; the direct flux and torque control schemes have been proved to be preponderant for doubly-fed induction generators due to the simple implementation.

Aim: This work presents the minimization of electromagnetic torque and rotor flux undulations of doubly-fed induction generators using fractional-order super twisting algorithms and modified space vector modulation techniques.

Methods: The main role of direct flux and torque control is to regulate and control the electromagnetic torque and rotor flux of doubly-fed induction generators for wind turbine systems. The direct flux and torque control is a traditional control algorithm and robust technique. Fractional-order super twisting algorithms are a new and proposed nonlinear controller; characterized by a robust controller and a simpler algorithm, which gives a good harmonic distortion of current compared to other methods.

Novelty: The A fractional-order super twisting algorithm is proposed. Proposed nonlinear controller construction is based on the traditional super twisting algorithm and fractional calculus to obtain a robust controller and reduces the electromagnetic torque and rotor flux undulations of doubly-fed induction generators. We use in our study a 1.5 MW doubly-fed induction generator integrated into a single-rotor wind turbine system to minimizes the electromagnetic torque, stator current, rotor flux undulations. As shown in the results figures using fractional-order super twisting algorithms ameliorate effectiveness especially minimizes the electromagnetic torque and rotor flux, and minimizes harmonic distortion of stator current (0.16 %) compared to the traditional control scheme.

Results: As shown in the results figures using fractional-order super twisting algorithms ameliorate effectiveness especially minimizes the electromagnetic torque and rotor flux, and minimizes harmonic distortion of stator current (0.16 %) compared to the traditional control scheme.

Conclusion: The direct flux and torque control are a robust, simple, and alternative approach control formulation that does not require decomposition into symmetrical components; the direct flux and torque control schemes have been proved to be preponderant for doubly-fed induction generators due to the simple implementation.

About the authors

Ali NAdhim Jbarah Almakki

Kazan National Research Technical University named after A. N. Tupolev

Author for correspondence.
Email: alinadhimj@gmail.com
ORCID iD: 0000-0002-0061-6425
Iraq, 10 Karla Marksa Str., Kazan, 420111, Russian Federation

Andrey Andreevich Mazalov

South Federal University

Email: anmaz8@list.ru
ORCID iD: 0000-0003-3761-0059
SPIN-code: 6534-7455
Scopus Author ID: 55927486000

PhD, Аssociate Рrofessor, Academy of Engineering and Technology, Institute of Radio Engineering Systems and Control, Department of Electrical Engineering and Mechatronics

Russian Federation, Rostov-On-Don, Russia

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Copyright (c) 2021 Almakki A., Mazalov A.A.

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