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Approches d’analyse et de commande non linéaire de systèmes de transmission HVDC

Abstract : In future, the capability of the electric power transmission continues to grow due to renewable energy production and the needs of the electrical market. Consequently, many High Voltage Direct Current (HVDC) transmission systems are developed to overcome the limitations of the High Voltage Alternative Current (HVAC) transmission systems. This progression is linked to the innovation of new power electronic devices, which play a key role to provide high reliability, good efficiency and cost effectiveness for HVDC transmission systems. Currently, most of the HVDC and Multi-terminal HVDC (MTDC) systems using either thyristor based Line Commutated Converters (LCCs) or IGBT-based Voltage Source Converters (VSCs). Recently, the development of a new Modular Multilevel Converter (MMC) in the HVDC context has taken the advantage over the classical topology as three-level VSC. The main contributions of this thesis work can be put into two areas: The first consists in modeling and controlling the HVDC and MTDC transmission systems based on VSC converter. Three new control structures are proposed for stabilizing and improving the dynamic behavior of the VSC-HVDC and VSC-MTDC systems. In the second area, the objectives focus on modeling and analysis of the stability of integrated MMC converter in a DC network. Moreover, nonlinear and robust control approaches are proposed in order to improve the desired dynamic performance of the MMC-HVDC transmission systems. The effectiveness of the proposed control strategies for VSC and MMC converter integrated into an HVDC systems is evaluated and discussed in simulation studies using Matlab/SimPowerSystem environment.
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https://tel.archives-ouvertes.fr/tel-01571571
Contributor : Mohamed Ayari <>
Submitted on : Wednesday, February 21, 2018 - 10:42:48 AM
Last modification on : Thursday, January 31, 2019 - 10:05:57 PM

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  • HAL Id : tel-01571571, version 2

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Mohamed Ayari. Approches d’analyse et de commande non linéaire de systèmes de transmission HVDC. Automatique / Robotique. Ecole Nationale Supérieure d'Ingénieurs de Tunis, 2017. Français. ⟨tel-01571571⟩

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