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Recent Advances in Electrical & Electronic Engineering

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ISSN (Print): 2352-0965
ISSN (Online): 2352-0973

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Research Article

LQG Controller for the Control of Active and Reactive Power of DFIG Operating Under Inter-turn Short Circuit Fault

Author(s): Selam Karim*, Allaoui Tayeb and Tadjine Mohamed

Volume 13, Issue 3, 2020

Page: [340 - 347] Pages: 8

DOI: 10.2174/2352096511666181114120443

Price: $65

Abstract

Objective: This article presents a comparative study between the direct control for a Doubly- Fed Induction Generator (DFIG) in the healthy and faulty mode.

Methods: First with classical IP controller then Linear Quadratic Gaussian (LQG) controller which propose an ensemble of Linear Quadratic Regulator and Kalman filter for the state estimation. The developed model of the machine allows the simulation of the inter-turn short circuit in the stator. The use of the LQG method provides very good performance for motor operation and robustness of the control law despite the external perturbation. The performance of the control is compared to a classical controller's PI.

Results: The obtained results demonstrate that this type of controller allows the alleviation of the mechanical stress and it ensures good performances under fault, the continuity of this system is ensured.

Conclusion: The simulation has been carried out using a MATLAB script and the results are presented.

Keywords: Doubly Fed Induction Generator (DFIG), power control, LQG controller, double flux orientation control, Kalman filter, short circuit fault.

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Graphical Abstract

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