H∞ Robust Current Control for DFIG Based Wind Turbine subject to Grid Voltage Distortions

Yun Wang; Qiuwei Wu; Wenming Gong; Mikkel Peter Sidoroff Gryning

doi:10.1109/TSTE.2016.2621418

H∞ Robust Current Control for DFIG Based Wind Turbine subject to Grid Voltage Distortions

Yun Wang, Qiuwei Wu, Wenming Gong, Mikkel Peter Sidoroff Gryning

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Abstract

This paper proposes an H∞ robust current controller for doubly fed induction generator (DFIG) based wind turbines (WTs) subject to grid voltage distortions. The controller is to mitigate the impact of the grid voltage distortions on rotor currents with DFIG parameter perturbation. The grid voltage distortions considered include asymmetric voltage dips and grid background harmonics. An uncertain DFIG model is developed with uncertain factors originating from distorted stator voltage, and changed generator parameters due to the flux saturation effect, the skin effect, etc. Weighting functions are designed to efficiently track the unbalanced current components and the 5th and 7th background harmonics. The robust stability (RS) and
robust performance (RP) of the proposed controller are verified by the structured singular value µ. The performance of the H∞ robust current controller was demonstrated with a 1.5 MW DFIG model, showing its harmonics suppression ability with DFIG parameter perturbation and improved robustness.

Original language	English
Journal	IEEE Transactions on Sustainable Energy
Volume	8
Issue number	2
Pages (from-to)	816 - 825
ISSN	1949-3029
DOIs	https://doi.org/10.1109/TSTE.2016.2621418
Publication status	Published - 2016

Bibliographical note

(c) 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

Keywords

Doubly fed induction generator (DFIG)
Grid harmonics
Grid voltage distortion
Robust control
Wind turbine

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H Robust Control of DFIG Based Wind Turbines Subject to Grid Distortions 20161023 post printAccepted author manuscript, 1.16 MB

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title = "H∞ Robust Current Control for DFIG Based Wind Turbine subject to Grid Voltage Distortions",

abstract = "This paper proposes an H∞ robust current controller for doubly fed induction generator (DFIG) based wind turbines (WTs) subject to grid voltage distortions. The controller is to mitigate the impact of the grid voltage distortions on rotor currents with DFIG parameter perturbation. The grid voltage distortions considered include asymmetric voltage dips and grid background harmonics. An uncertain DFIG model is developed with uncertain factors originating from distorted stator voltage, and changed generator parameters due to the flux saturation effect, the skin effect, etc. Weighting functions are designed to efficiently track the unbalanced current components and the 5th and 7th background harmonics. The robust stability (RS) androbust performance (RP) of the proposed controller are verified by the structured singular value µ. The performance of the H∞ robust current controller was demonstrated with a 1.5 MW DFIG model, showing its harmonics suppression ability with DFIG parameter perturbation and improved robustness. ",

keywords = "Doubly fed induction generator (DFIG), Grid harmonics, Grid voltage distortion, Robust control, Wind turbine",

author = "Yun Wang and Qiuwei Wu and Wenming Gong and Gryning, {Mikkel Peter Sidoroff}",

note = "(c) 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.",

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AU - Wang, Yun

AU - Wu, Qiuwei

AU - Gong, Wenming

AU - Gryning, Mikkel Peter Sidoroff

N1 - (c) 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

PY - 2016

Y1 - 2016

N2 - This paper proposes an H∞ robust current controller for doubly fed induction generator (DFIG) based wind turbines (WTs) subject to grid voltage distortions. The controller is to mitigate the impact of the grid voltage distortions on rotor currents with DFIG parameter perturbation. The grid voltage distortions considered include asymmetric voltage dips and grid background harmonics. An uncertain DFIG model is developed with uncertain factors originating from distorted stator voltage, and changed generator parameters due to the flux saturation effect, the skin effect, etc. Weighting functions are designed to efficiently track the unbalanced current components and the 5th and 7th background harmonics. The robust stability (RS) androbust performance (RP) of the proposed controller are verified by the structured singular value µ. The performance of the H∞ robust current controller was demonstrated with a 1.5 MW DFIG model, showing its harmonics suppression ability with DFIG parameter perturbation and improved robustness.

AB - This paper proposes an H∞ robust current controller for doubly fed induction generator (DFIG) based wind turbines (WTs) subject to grid voltage distortions. The controller is to mitigate the impact of the grid voltage distortions on rotor currents with DFIG parameter perturbation. The grid voltage distortions considered include asymmetric voltage dips and grid background harmonics. An uncertain DFIG model is developed with uncertain factors originating from distorted stator voltage, and changed generator parameters due to the flux saturation effect, the skin effect, etc. Weighting functions are designed to efficiently track the unbalanced current components and the 5th and 7th background harmonics. The robust stability (RS) androbust performance (RP) of the proposed controller are verified by the structured singular value µ. The performance of the H∞ robust current controller was demonstrated with a 1.5 MW DFIG model, showing its harmonics suppression ability with DFIG parameter perturbation and improved robustness.

KW - Doubly fed induction generator (DFIG)

KW - Grid harmonics

KW - Grid voltage distortion

KW - Robust control

KW - Wind turbine

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DO - 10.1109/TSTE.2016.2621418

M3 - Journal article

SN - 1949-3029

VL - 8

SP - 816

EP - 825

JO - IEEE Transactions on Sustainable Energy

JF - IEEE Transactions on Sustainable Energy

IS - 2

ER -

H∞ Robust Current Control for DFIG Based Wind Turbine subject to Grid Voltage Distortions

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