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Energies 2017, 10(6), 819; doi:10.3390/en10060819

Performance Analysis of Conjugate Gradient Algorithms Applied to the Neuro-Fuzzy Feedback Linearization-Based Adaptive Control Paradigm for Multiple HVDC Links in AC/DC Power System

Department of Electrical Engineering, COMSATS Institute of information Technology, 22060 Abbottabad, Pakistan
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Author to whom correspondence should be addressed.
Academic Editor: Akhtar Kalam
Received: 23 March 2017 / Revised: 24 May 2017 / Accepted: 5 June 2017 / Published: 16 June 2017
(This article belongs to the Section Electrical Power and Energy System)
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Abstract

The existing literature predominantly concentrates on the utilization of the gradient descent algorithm for control systems’ design in power systems for stability enhancement. In this paper, various flavors of the Conjugate Gradient (CG) algorithm have been employed to design the online neuro-fuzzy linearization-based adaptive control strategy for Line Commutated Converters’ (LCC) High Voltage Direct Current (HVDC) links embedded in a multi-machine test power system. The conjugate gradient algorithms are evaluated based on the damping of electro-mechanical oscillatory modes using MATLAB/Simulink. The results validate that all of the conjugate gradient algorithms have outperformed the gradient descent optimization scheme and other conventional and non-conventional control schemes. View Full-Text
Keywords: low-frequency oscillations; HVDC system; adaptive feedback linearization control; adaptive neuro-fuzzy inference system; conjugate gradient algorithms low-frequency oscillations; HVDC system; adaptive feedback linearization control; adaptive neuro-fuzzy inference system; conjugate gradient algorithms
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ahmad, S.; Khan, L. Performance Analysis of Conjugate Gradient Algorithms Applied to the Neuro-Fuzzy Feedback Linearization-Based Adaptive Control Paradigm for Multiple HVDC Links in AC/DC Power System. Energies 2017, 10, 819.

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