Multivariable control of a grid-connected wind energy conversion system with power quality enhancement

Fouad Kaddour; Houari Merabet Boulouiha; Ahmed Allali; Ali  Tabti; Mouloud Denai

doi:10.1007/s12667-016-0223-7

Multivariable control of a grid-connected wind energy conversion system with power quality enhancement

Fouad Kaddour, Houari Merabet Boulouiha, Ahmed Allali, Ali Tabti, Mouloud Denai

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

26 Downloads (Pure)

Abstract

This paper proposes the design of a multivariable robust control strategy for a variable-speed WECS based on a SCIG. Optimal speed control of the SCIG is achieved by a conventional PI controller combined with a MPPT strategy. DTC-SVM technique based on a simple Clarke transformation is used to control the generator-side three-level converter in the variable speed WECS. The flow of real and reactive power between the inverter and the grid is controlled via the grid real and reactive currents and the DC link voltage using multivariable H∞ control. The overall WECS and control scheme are developed in Matlab/Simulink and the performance of the proposed control strategy is evaluated via a set of simulation scenarios replicating various operating conditions of the WECS such as variable wind speed and asymmetric single grid faults. The power quality of the WECS system under H∞ control control approach is assessed and the results show a significant improvement in the total harmonic distorsion as compared to that achieved with a classical PI control.

Original language	English
Pages (from-to)	25-57
Number of pages	33
Journal	Energy Systems
Volume	9
Issue number	1
Early online date	5 Oct 2016
DOIs	https://doi.org/10.1007/s12667-016-0223-7
Publication status	Published - 1 Feb 2018

Keywords

Direct torque control
H control
MPPT
Multilevel inverter
Space vector PWM
Squirrel cage induction generator
Wind energy

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Fouad et al accepted manuscriptAccepted author manuscript, 1.38 MB

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title = "Multivariable control of a grid-connected wind energy conversion system with power quality enhancement",

abstract = "This paper proposes the design of a multivariable robust control strategy for a variable-speed WECS based on a SCIG. Optimal speed control of the SCIG is achieved by a conventional PI controller combined with a MPPT strategy. DTC-SVM technique based on a simple Clarke transformation is used to control the generator-side three-level converter in the variable speed WECS. The flow of real and reactive power between the inverter and the grid is controlled via the grid real and reactive currents and the DC link voltage using multivariable H∞ control. The overall WECS and control scheme are developed in Matlab/Simulink and the performance of the proposed control strategy is evaluated via a set of simulation scenarios replicating various operating conditions of the WECS such as variable wind speed and asymmetric single grid faults. The power quality of the WECS system under H∞ control control approach is assessed and the results show a significant improvement in the total harmonic distorsion as compared to that achieved with a classical PI control.",

keywords = "Direct torque control, H control, MPPT, Multilevel inverter, Space vector PWM, Squirrel cage induction generator, Wind energy",

author = "Fouad Kaddour and {Merabet Boulouiha}, Houari and Ahmed Allali and Ali Tabti and Mouloud Denai",

note = "This document is the Accepted Manuscript version of the following article: Kaddour Fouad, Houari Merabet Boulouiha, Ahmed Allali, Ali Taibi, and Mouloud Denai, {\textquoteleft}Multivariable control of a grid-connected wind energy conversion system with power quality enhancement{\textquoteright}, Energy Systems, Vol. 9 (1): 25-57, February 2018. The final publication is available at Springer via: https://doi.org/10.1007/s12667-016-0223-7 ",

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AU - Kaddour, Fouad

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AU - Denai, Mouloud

N1 - This document is the Accepted Manuscript version of the following article: Kaddour Fouad, Houari Merabet Boulouiha, Ahmed Allali, Ali Taibi, and Mouloud Denai, ‘Multivariable control of a grid-connected wind energy conversion system with power quality enhancement’, Energy Systems, Vol. 9 (1): 25-57, February 2018. The final publication is available at Springer via: https://doi.org/10.1007/s12667-016-0223-7

PY - 2018/2/1

Y1 - 2018/2/1

N2 - This paper proposes the design of a multivariable robust control strategy for a variable-speed WECS based on a SCIG. Optimal speed control of the SCIG is achieved by a conventional PI controller combined with a MPPT strategy. DTC-SVM technique based on a simple Clarke transformation is used to control the generator-side three-level converter in the variable speed WECS. The flow of real and reactive power between the inverter and the grid is controlled via the grid real and reactive currents and the DC link voltage using multivariable H∞ control. The overall WECS and control scheme are developed in Matlab/Simulink and the performance of the proposed control strategy is evaluated via a set of simulation scenarios replicating various operating conditions of the WECS such as variable wind speed and asymmetric single grid faults. The power quality of the WECS system under H∞ control control approach is assessed and the results show a significant improvement in the total harmonic distorsion as compared to that achieved with a classical PI control.

AB - This paper proposes the design of a multivariable robust control strategy for a variable-speed WECS based on a SCIG. Optimal speed control of the SCIG is achieved by a conventional PI controller combined with a MPPT strategy. DTC-SVM technique based on a simple Clarke transformation is used to control the generator-side three-level converter in the variable speed WECS. The flow of real and reactive power between the inverter and the grid is controlled via the grid real and reactive currents and the DC link voltage using multivariable H∞ control. The overall WECS and control scheme are developed in Matlab/Simulink and the performance of the proposed control strategy is evaluated via a set of simulation scenarios replicating various operating conditions of the WECS such as variable wind speed and asymmetric single grid faults. The power quality of the WECS system under H∞ control control approach is assessed and the results show a significant improvement in the total harmonic distorsion as compared to that achieved with a classical PI control.

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Multivariable control of a grid-connected wind energy conversion system with power quality enhancement

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Keywords

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