{"id":696,"date":"2025-02-28T17:34:00","date_gmt":"2025-02-28T17:34:00","guid":{"rendered":"https:\/\/cnsfdz.com\/case\/%e6%9f%90%e8%bd%a8%e9%81%93%e4%ba%a4%e9%80%9a%e9%9b%86%e5%9b%a2%e5%9c%b0%e9%93%81%e8%bd%a6%e8%be%86%e7%89%b5%e5%bc%95%e7%b3%bb%e7%bb%9f%e7%94%b5%e6%b5%81%e7%9b%91%e6%b5%8b%e6%96%b9%e6%a1%88\/"},"modified":"2026-02-04T16:01:10","modified_gmt":"2026-02-04T16:01:10","slug":"programme-de-surveillance-du-courant-pour-le-systeme-de-traction-des-vehicules-du-metro-dun-groupe-ferroviaire","status":"publish","type":"sf_case","link":"https:\/\/cnsfdz.com\/fr\/cas\/programme-de-surveillance-du-courant-pour-le-systeme-de-traction-des-vehicules-du-metro-dun-groupe-ferroviaire\/","title":{"rendered":"Programme de surveillance du courant pour le syst\u00e8me de traction des v\u00e9hicules du m\u00e9tro d'un groupe ferroviaire"},"content":{"rendered":"<h3>Contexte du projet<\/h3>\n<p>Un grand groupe ferroviaire est responsable de l'exploitation et de la maintenance des v\u00e9hicules des lignes de m\u00e9tro dans plusieurs villes. Le syst\u00e8me de traction des v\u00e9hicules du m\u00e9tro adopte la technologie de contr\u00f4le de la vitesse par conversion de fr\u00e9quence en courant alternatif, ce qui n\u00e9cessite une surveillance pr\u00e9cise du courant du moteur de traction pour le retour d'information du syst\u00e8me de contr\u00f4le, les statistiques sur la consommation d'\u00e9nergie et le diagnostic des pannes.<\/p>\n<p>La solution conventionnelle utilise des transformateurs de courant (TC), mais elle souffre d'une taille importante, d'un co\u00fbt \u00e9lev\u00e9 et d'une mauvaise r\u00e9ponse \u00e0 basse fr\u00e9quence. Le client souhaitait tester la solution shunt sur de nouveaux v\u00e9hicules de ligne afin d'obtenir une plus grande pr\u00e9cision de mesure et de r\u00e9duire le co\u00fbt du syst\u00e8me.<\/p>\n<p><strong>Exigences en mati\u00e8re de sp\u00e9cifications techniques :<\/strong><\/p>\n<ul>\n<li>Puissance du moteur de traction : 180 kW \u00d7 4 ensembles\/v\u00e9hicule<\/li>\n<li>Tension du bus DC : DC 750V\/1500V<\/li>\n<li>Courant maximal d'un seul moteur : 400 A<\/li>\n<li>Pr\u00e9cision de la mesure du courant : \u00b11%<\/li>\n<li>Temp\u00e9rature de fonctionnement : -25\u2103 ~ +70\u2103.<\/li>\n<li>Classe de protection : IP65 (\u00e9quipement sous le v\u00e9hicule)<\/li>\n<\/ul>\n<h3>D\u00e9fis techniques rencontr\u00e9s<\/h3>\n<p><strong>1. isolation de la haute tension<\/strong><\/p>\n<p>La tension du bus CC du syst\u00e8me de traction peut atteindre 750 V, voire 1 500 V. Bien que le shunt ne pose pas de probl\u00e8me d'isolation de la haute tension pour les mesures du c\u00f4t\u00e9 bas, il doit \u00eatre consid\u00e9r\u00e9 comme une adaptation de l'isolation pour l'ensemble du syst\u00e8me.<\/p>\n<p><strong>2. environnement vibratoire<\/strong><\/p>\n<p>Les wagons souterrains sont soumis \u00e0 des vibrations et \u00e0 des chocs constants, et les \u00e9quipements du train de roulement sont expos\u00e9s \u00e0 des environnements vibratoires encore plus s\u00e9v\u00e8res. Les shunts et leurs connexions doivent pouvoir r\u00e9sister aux vibrations \u00e0 long terme.<\/p>\n<p><strong>3. les interf\u00e9rences \u00e9lectromagn\u00e9tiques<\/strong><\/p>\n<p>La commutation \u00e0 grande vitesse des IGBT de l'onduleur de traction g\u00e9n\u00e8re de fortes interf\u00e9rences \u00e9lectromagn\u00e9tiques qui peuvent affecter la transmission pr\u00e9cise des signaux shunt.<\/p>\n<p><strong>4. les exigences en mati\u00e8re de protection<\/strong><\/p>\n<p>L'\u00e9quipement embarqu\u00e9 est expos\u00e9 \u00e0 la pluie, \u00e0 la poussi\u00e8re, \u00e0 l'huile et \u00e0 d'autres environnements difficiles et doit \u00eatre conforme \u00e0 la norme IP65.<\/p>\n<h3>Solutions techniques<\/h3>\n<p><strong>1. dimensionnement du shunt<\/strong><\/p>\n<p>Chaque moteur de traction est \u00e9quip\u00e9 d'un shunt FL-2, param\u00e8tres cl\u00e9s :<\/p>\n<ul>\n<li>Valeur de la r\u00e9sistance : 150\u00b5\u03a9 \u00b10,5%<\/li>\n<li>Courant nominal : 500A<\/li>\n<li>Chute de tension nominale : 75mV @500A<\/li>\n<li>Coefficient de temp\u00e9rature :<25ppm>\n<li>Perte de puissance : 24W @400A<\/li>\n<\/ul>\n<p><strong>2. conception du renforcement m\u00e9canique<\/strong><\/p>\n<ul>\n<li>S\u00e9parateur avec structure de montage renforc\u00e9e, fixation par 4 boulons M8<\/li>\n<li>Base de montage avec amortisseur de vibrations pour r\u00e9duire la transmission des vibrations<\/li>\n<li>Les connexions \u00e9lectriques sont r\u00e9alis\u00e9es \u00e0 l'aide de bornes \u00e0 sertir afin d'\u00e9viter le desserrage des connexions filet\u00e9es.<\/li>\n<li>A pass\u00e9 avec succ\u00e8s l'essai de chocs vibratoires EN 61373 pour les v\u00e9hicules ferroviaires<\/li>\n<\/ul>\n<p><strong>3. conception CEM<\/strong><\/p>\n<ul>\n<li>Pr\u00e9l\u00e8vement de tension \u00e0 l'aide d'un c\u00e2ble blind\u00e9 \u00e0 paires torsad\u00e9es, blindage et connexion \u00e9quipotentielle du corps<\/li>\n<li>Module de conditionnement du signal mont\u00e9 dans un bo\u00eetier m\u00e9tallique blind\u00e9<\/li>\n<li>Filtrage du mode commun et protection TVS ajout\u00e9s aux entr\u00e9es du module<\/li>\n<\/ul>\n<p><strong>4. conception protectrice<\/strong><\/p>\n<ul>\n<li>Traitement anticorrosion de la surface des shunts par nickelage<\/li>\n<li>Module de conditionnement des signaux dans un bo\u00eetier IP65<\/li>\n<li>Les c\u00e2bles de connexion sont du type r\u00e9sistant aux intemp\u00e9ries pour une utilisation ferroviaire.<\/li>\n<\/ul>\n<h3>R\u00e9sultats du projet<\/h3>\n<ul>\n<li><strong>Pr\u00e9cision de la mesure :<\/strong>Pr\u00e9cision de la mesure du courant de \u00b10,8%, meilleure que les exigences de conception de \u00b11%<\/li>\n<li><strong>Fiabilit\u00e9 :<\/strong>A pass\u00e9 avec succ\u00e8s l'essai de chocs vibratoires EN 61373 et une s\u00e9rie compl\u00e8te d'essais d'environnement ferroviaire.<\/li>\n<li><strong>\u00c9chelle d'application :<\/strong>Il a \u00e9t\u00e9 test\u00e9 sur de nouvelles voitures sur deux lignes de m\u00e9tro, avec un total de 80 trains \u00e9quip\u00e9s de 320 moteurs.<\/li>\n<li><strong>Avantage en termes de co\u00fbts :<\/strong>R\u00e9duction du co\u00fbt du syst\u00e8me d'environ 30% par rapport aux solutions de tomographie conventionnelles<\/li>\n<li><strong>Performances de fonctionnement :<\/strong>Fonctionnement \u00e0 l'essai depuis plus de deux ans, aucune d\u00e9faillance n'a \u00e9t\u00e9 signal\u00e9e, le client pr\u00e9voit de l'\u00e9tendre \u00e0 d'autres itin\u00e9raires.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Fournir une solution de shunt \u00e0 courant \u00e9lev\u00e9 de haute pr\u00e9cision pour le syst\u00e8me de traction des v\u00e9hicules de m\u00e9tro d'un grand groupe de transport ferroviaire afin de surveiller le courant du moteur de traction et de diagnostiquer les pannes.<\/p>","protected":false},"featured_media":685,"template":"","meta":[],"case_industry":[161],"class_list":["post-696","sf_case","type-sf_case","status-publish","has-post-thumbnail","hentry","case_industry-rail-transit"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v26.9) - 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