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Commande numérique industrielle des convertisseurs à thyristors d'une machine synchrone autopilotée

Abstract : One of the important points of this study, which has been carried out in cooperation with EDF-CEGELEC-CRAN, is the complete realization of an industrial digital control of a self-controlled synchronous machine. This realization is based 0!l a given operation requirements specification especially for firing angle accuracy and variable-frequency following. In the first part of the thesis, phenomena related to the imperfections of power supply network are studied in a certain depth, especially the extraction of the fundamental of a noisy variable-frequency network. This is a specific research on the synchronizing problem. In the second part, we discuss digital firing circuits for thyristors and gate pulse production algorithms. We will give a description and a comparaison of several existing firing algorithms (reference crossing, time delayed, incremental) and then, propose a firing algorithm said hybrid algorithm. Finally, a complete study is made on firing control (from operation requirements specification to its hardware and software realization) of thyristor bridges for a self-controlled synchronous machine. Note that the rapidity of process, the complexity of the interaction between different functions make us, during the realizing procedure, to' follow the design method MAREL (Méthode de conception d'Applications temps Réel pour la commande de processus ELectromécaniques : design method for real time applications in electromechanical process control) developed in CRAN
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Submitted on : Thursday, March 29, 2018 - 1:02:45 PM
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  • HAL Id : tel-01751035, version 1



Mohamed-Karim Fellah. Commande numérique industrielle des convertisseurs à thyristors d'une machine synchrone autopilotée. Autre. Institut National Polytechnique de Lorraine, 1991. Français. ⟨NNT : 1991INPL081N⟩. ⟨tel-01751035⟩



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