{"id":9026,"date":"2025-12-25T08:24:00","date_gmt":"2025-12-25T07:24:00","guid":{"rendered":"https:\/\/l2ep.univ-lille.fr\/?p=9026"},"modified":"2026-02-06T08:27:56","modified_gmt":"2026-02-06T07:27:56","slug":"soutenance-de-these-johan-boukhenfouf-25-fev-2026","status":"publish","type":"post","link":"https:\/\/l2ep.univ-lille.fr\/en\/soutenance-de-these-johan-boukhenfouf-25-fev-2026\/","title":{"rendered":"Soutenance de th\u00e8se, Johan BOUKHENFOUF, 25 F\u00e9v. 2026"},"content":{"rendered":"<div style=\"width: 700px; margin: auto;\">\n<p style=\"text-align: center;\"><strong><span style=\"font-size: medium; color: #f07e1c;\">D\u00e9veloppement des Convertisseurs Statiques DC\/DC pour l\u2019interconnexion des r\u00e9seaux \u00e9lectriques haute tension \u00e0 courant continu.<\/span><\/strong><\/p>\n<p style=\"text-align: center;\"><strong><span style=\"font-size: medium; color: #f07e1c;\">Design and Control of Modular Multilevel DC-DC Converters for HVDC Grid Interconnection<\/span><\/strong><\/p>\n<p style=\"text-align: center;\">Mercredi 25 f\u00e9vrier, 12h00<br \/>\nSalle Laroche-Foucault, Arts et M\u00e9tiers, Lille<\/p>\n<p><strong><span style=\"color: #f07e1c;\">R\u00e9sum\u00e9 :<\/span><\/strong> Cette th\u00e8se porte sur l&rsquo;\u00e9tude des convertisseurs DC-DC haute puissance pour les futurs r\u00e9seaux HVDC, en se concentrant sp\u00e9cifiquement sur les topologies modulaires multiniveaux (MMC). L&rsquo;objectif principal est d&rsquo;identifier l&rsquo;architecture offrant le meilleur compromis entre volume, efficacit\u00e9 et faisabilit\u00e9 industrielle. Trois topologies majeures sont analys\u00e9es : le MMC-DAB (r\u00e9f\u00e9rence \u00e0 deux \u00e9tages), le MMC-AT et le M2DC (architectures \u00e0 un \u00e9tage). La m\u00e9thodologie s&rsquo;appuie sur une analyse approfondie des degr\u00e9s de libert\u00e9 disponibles afin d&rsquo;optimiser le dimensionnement de ces structures. Cette \u00e9tude comparative met en lumi\u00e8re le potentiel de r\u00e9duction de volume et de pertes des topologies \u00e0 un \u00e9tage, tout en identifiant les limites du dimensionnement th\u00e9orique face aux contraintes r\u00e9elles, par exemple de fabrication des transformateurs (notamment les potentiels probl\u00e8me d\u2019isolation sous contrainte DC). Enfin, apr\u00e8s avoir d\u00e9fini les strat\u00e9gies de contr\u00f4le appropri\u00e9es, une validation exp\u00e9rimentale de la topologie M2DC est pr\u00e9sent\u00e9e pour d\u00e9montrer ses performances dynamiques et sa viabilit\u00e9.<\/p>\n<p><strong><span style=\"color: #f07e1c;\">Abstract:<\/span><\/strong> This thesis focuses on high-power DC-DC conversion for future HVDC grids, specifically targeting Modular Multilevel Converter (MMC) topologies. The primary objective is to identify the architecture offering the optimal trade-off between volume, efficiency, and industrial feasibility. Three main topologies are analysed: the MMC-DAB (two-stage reference), the MMC-AT, and the M2DC (single-stage architectures). The methodology relies on a comprehensive analysis of the available degrees of freedom to optimize the design of these structures. The comparative study highlights the potential reduction of volume and losses with single-stage topologies while identifying the limits of theoretical sizing regarding practical aspect such as transformer manufacturing constraints (particularly isolation issues under DC stress). Finally, following the definition of suitable control strategies, an experimental validation of the M2DC topology is presented to demonstrate its dynamic performance and viability.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>D\u00e9veloppement des Convertisseurs Statiques DC\/DC pour l\u2019interconnexion des r\u00e9seaux \u00e9lectriques haute tension \u00e0 courant continu. Design and Control of Modular Multilevel DC-DC Converters for HVDC Grid Interconnection Mercredi 25 f\u00e9vrier, 12h00 Salle Laroche-Foucault, Arts et M\u00e9tiers, Lille R\u00e9sum\u00e9 : Cette th\u00e8se porte sur l&rsquo;\u00e9tude des convertisseurs DC-DC haute puissance pour les futurs r\u00e9seaux HVDC, en [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[18,3],"tags":[],"_links":{"self":[{"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/posts\/9026"}],"collection":[{"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/comments?post=9026"}],"version-history":[{"count":1,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/posts\/9026\/revisions"}],"predecessor-version":[{"id":9027,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/posts\/9026\/revisions\/9027"}],"wp:attachment":[{"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/media?parent=9026"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/categories?post=9026"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/tags?post=9026"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}