{"id":6616,"date":"2021-01-12T13:45:08","date_gmt":"2021-01-12T12:45:08","guid":{"rendered":"https:\/\/l2ep.univ-lille.fr\/?p=6616"},"modified":"2021-01-12T13:45:08","modified_gmt":"2021-01-12T12:45:08","slug":"soutenance-de-these-jerome-marault-20-janv-2021","status":"publish","type":"post","link":"https:\/\/l2ep.univ-lille.fr\/en\/soutenance-de-these-jerome-marault-20-janv-2021\/","title":{"rendered":"Soutenance de th\u00e8se, J\u00e9rome MARAULT, 20 Janv. 2021"},"content":{"rendered":"

Conception de machines asynchrones triphas\u00e9es \u00e0 bobinages statoriques dentaires<\/span><\/strong><\/p>\n

Mercredi 20 Janvier 2021, 14h, Amphi Atrium, B\u00e2timent ESPRIT,\u00a0Lien ZOOM<\/span><\/a><\/p>\n

R\u00e9sum\u00e9 :<\/span><\/strong><\/p>\n

Les machines asynchrones (MAS) \u00e0 cage d\u2019\u00e9cureuil sont des machines \u00e9lectriques fiables, robustes et \u00e0 faible co\u00fbt de fabrication. Pour des raisons historiques et de fiabilit\u00e9, elles sont principalement dot\u00e9es de bobinages statoriques distribu\u00e9s. Toutefois, m\u00eame si ces derniers assurent un fonctionnement tr\u00e8s satisfaisant, ils ont des t\u00eates de bobines de longueurs significatives, ce qui engendre des pertes Joule non n\u00e9gligeables. Derni\u00e8rement, diff\u00e9rents bobinages dentaires avec des t\u00eates de bobines r\u00e9duites, ont \u00e9t\u00e9 utilis\u00e9s dans des machines synchrones avec des performances int\u00e9ressantes. En plus de r\u00e9duire les pertes Joule statoriques, ces bobinages permettent de concevoir des machines plus compactes et tol\u00e9rantes aux d\u00e9fauts. Leur utilisation est moins r\u00e9pandue dans les MAS \u00e0 cage de par les probl\u00e8mes induits par les harmoniques spatiaux dans la force magn\u00e9tomotrice qui en est issue. Les travaux de la th\u00e8se ont pour objectif la conciliation de l\u2019utilisation de ces bobinages dans des MAS avec de meilleures performances. Une analyse d\u00e9taill\u00e9e est d\u2019abord men\u00e9e pour appr\u00e9hender pr\u00e9cis\u00e9ment les ph\u00e9nom\u00e8nes physiques li\u00e9s \u00e0 l\u2019utilisation des bobinages dentaires dans les machines asynchrones aussi bien en r\u00e9gime permanent que lors du d\u00e9marrage. Un mod\u00e8le analytique param\u00e9trique de machine asynchrone \u00e0 cage d\u2019\u00e9cureuil a ensuite \u00e9t\u00e9 d\u00e9velopp\u00e9. Ce mod\u00e8le permet de concevoir des bobinages dentaires avec un contenu harmonique spatial maitris\u00e9 mais \u00e9galement des rotors avec diff\u00e9rents nombres de barres \u00e9quidistantes ou non. Sur la base de cet outil, des optimisations ont alors \u00e9t\u00e9 men\u00e9es tant sur le stator et son bobinage que sur la structure rotorique montrant qu\u2019il est possible d\u2019aboutir \u00e0 des structures \u2018atypiques\u2019 avec des performances satisfaisantes. Enfin, dans une optique de validation, une MAS \u00e0 bobinage dentaire avec une cage rotorique innovante a \u00e9t\u00e9 d\u00e9velopp\u00e9e et ses performances en termes de couple d\u00e9velopp\u00e9 ont \u00e9t\u00e9 \u00e9valu\u00e9es au travers de simulations num\u00e9riques et d\u2019essais r\u00e9alis\u00e9s sur un prototype.<\/p>\n

Abstract :<\/span><\/strong><\/p>\n

Squirrel cage induction machines (IM) are reliable, robust and low-cost manufacturing electrical machines. For historical and reliability reasons, they are mainly equipped with distributed stator windings. However, even if the latter ensure very satisfactory operation, they have significant end-coils lengths, which generate non-negligible Joule losses. Recently, different fractional slot concentrated windings (FSCW) with reduced end-coils have been used in synchronous machines with interesting performances. In addition to reducing stator Joule losses, these windings enable to design machines that are more compact and fault tolerant. Their use is less common in IM due to the problems induced by spatial harmonics in the magneto motive force when supplied. The aim of this work is to find the best way to use FSCW windings in IM while ensuring good performances. A detailed analysis is first carried out to precisely understand the physical phenomena associated with the use of FSCW in induction machines both in steady state and during start-up. A parametric analytical model of a squirrel cage induction machine was then developed. This model enables to design FSCW windings with a controlled spatial harmonic content but also rotors with different numbers of bars that are equidistant or not. On the basis of this tool, optimizations were carried out both on the stator and its winding and on the rotor structure, showing that it is possible to achieve \u00ab\u00a0uncommon\u00a0\u00bb structures with satisfactory performance. Finally, a fractional slot concentrated winding IM with an innovative rotor cage was developed. Its performance in terms of the developed torque was evaluated through numerical simulations and tests carried out on a prototype.<\/p>\n","protected":false},"excerpt":{"rendered":"

Conception de machines asynchrones triphas\u00e9es \u00e0 bobinages statoriques dentaires Mercredi 20 Janvier 2021, 14h, Amphi Atrium, B\u00e2timent ESPRIT,\u00a0Lien ZOOM R\u00e9sum\u00e9 : Les machines asynchrones (MAS) \u00e0 cage d\u2019\u00e9cureuil sont des machines \u00e9lectriques fiables, robustes et \u00e0 faible co\u00fbt de fabrication. Pour des raisons historiques et de fiabilit\u00e9, elles sont principalement dot\u00e9es de bobinages statoriques distribu\u00e9s. […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[34,3],"tags":[],"_links":{"self":[{"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/posts\/6616"}],"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=6616"}],"version-history":[{"count":1,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/posts\/6616\/revisions"}],"predecessor-version":[{"id":6617,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/posts\/6616\/revisions\/6617"}],"wp:attachment":[{"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/media?parent=6616"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/categories?post=6616"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/tags?post=6616"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}