{"id":693,"date":"2025-11-22T12:04:00","date_gmt":"2025-11-22T12:04:00","guid":{"rendered":"https:\/\/cnsfdz.com\/case\/%e6%9f%90%e5%85%89%e4%bc%8f%e9%80%86%e5%8f%98%e5%99%a8%e5%88%b6%e9%80%a0%e5%95%86%e7%bb%84%e4%b8%b2%e5%bc%8f%e9%80%86%e5%8f%98%e5%99%a8mppt%e7%94%b5%e6%b5%81%e6%a3%80%e6%b5%8b%e6%96%b9%e6%a1%88\/"},"modified":"2026-02-04T16:00:28","modified_gmt":"2026-02-04T16:00:28","slug":"schema-de-detection-du-courant-mppt-de-londuleur-a-cordes-pour-un-fabricant-donduleurs-photovoltaiques","status":"publish","type":"sf_case","link":"https:\/\/cnsfdz.com\/fr\/cas\/schema-de-detection-du-courant-mppt-de-londuleur-a-cordes-pour-un-fabricant-donduleurs-photovoltaiques\/","title":{"rendered":"Sch\u00e9ma de d\u00e9tection du courant MPPT pour les onduleurs de branche d'un fabricant d'onduleurs photovolta\u00efques"},"content":{"rendered":"<h3>Contexte du projet<\/h3>\n<p>Un c\u00e9l\u00e8bre fabricant national d'onduleurs photovolta\u00efques poss\u00e8de l'une des plus importantes livraisons de produits au monde, avec des produits vendus dans plus de 30 pays et r\u00e9gions du monde et des livraisons annuelles de plus de 10 GW. Les onduleurs de branche constituent sa principale ligne de produits, avec une puissance allant de 50 kW \u00e0 250 kW, et utilisant de multiples conceptions MPPT (suivi du point de puissance maximale), qui n\u00e9cessitent une d\u00e9tection pr\u00e9cise du courant c\u00f4t\u00e9 CC pour le contr\u00f4le MPPT et la surveillance de la branche.<\/p>\n<p><strong>Exigences en mati\u00e8re de sp\u00e9cifications techniques :<\/strong><\/p>\n<ul>\n<li>Gamme de produits : onduleurs string 50kW-250kW<\/li>\n<li>Nombre de canaux MPPT : 4-12 canaux<\/li>\n<li>Courant maximal par circuit : 30A (module de 550W x 12 branches)<\/li>\n<li>Pr\u00e9cision de la mesure du courant : \u00b10,5%<\/li>\n<li>Temp\u00e9rature de fonctionnement : -25\u2103 ~ +60\u2103.<\/li>\n<\/ul>\n<h3>D\u00e9fis techniques rencontr\u00e9s<\/h3>\n<p><strong>1) Exigences en mati\u00e8re de pr\u00e9cision MPPT<\/strong><\/p>\n<p>L'algorithme MPPT calcule la puissance en fonction du produit du courant et de la tension, et l'erreur de mesure du courant affecte directement l'efficacit\u00e9 MPPT. Une erreur de mesure du courant de 11 TP3T peut entra\u00eener une perte de production d'\u00e9lectricit\u00e9 de 0,1 \u00e0 0,21 TP3T, ce qui repr\u00e9sente une perte \u00e9conomique consid\u00e9rable dans les centrales \u00e9lectriques de l'ordre du MW.<\/p>\n<p><strong>2. coh\u00e9rence multiple<\/strong><\/p>\n<p>Un seul onduleur poss\u00e8de plusieurs MPPT, et la coh\u00e9rence des mesures de courant multiples affecte directement la pr\u00e9cision de la surveillance de la cha\u00eene et du diagnostic des pannes. S'il y a des \u00e9carts entre les diff\u00e9rentes routes, cela peut conduire \u00e0 des alarmes erron\u00e9es ou manqu\u00e9es.<\/p>\n<p><strong>3. le contr\u00f4le des co\u00fbts<\/strong><\/p>\n<p>L'industrie photovolta\u00efque est tr\u00e8s comp\u00e9titive et le prix des onduleurs diminue, avec un contr\u00f4le strict des co\u00fbts pour chaque composant. Le shunt, en tant que composant central du MPPT multiplex\u00e9, doit \u00eatre optimis\u00e9 en termes de co\u00fbts tout en garantissant les performances.<\/p>\n<p><strong>4. l'accr\u00e9ditation globale<\/strong><\/p>\n<p>Les produits sont vendus sur le march\u00e9 mondial et doivent r\u00e9pondre aux exigences de certification des diff\u00e9rents pays et r\u00e9gions, notamment CE, UL, T\u00dcV, etc.<\/p>\n<h3>Solutions techniques<\/h3>\n<p><strong>1. dimensionnement du shunt<\/strong><\/p>\n<p>Chaque MPPT est configur\u00e9 avec un splitter FL-2. param\u00e8tres cl\u00e9s :<\/p>\n<ul>\n<li>Valeur de la r\u00e9sistance : 2m\u03a9 \u00b10,5%<\/li>\n<li>Courant nominal : 50A<\/li>\n<li>Chute de tension nominale : 100mV @50A<\/li>\n<li>Coefficient de temp\u00e9rature :<30ppm>\n<li>Perte de puissance : 1,8 W \u00e0 30 A<\/li>\n<\/ul>\n<p>S\u00e9lectionnez une valeur de r\u00e9sistance plus \u00e9lev\u00e9e (2m\u03a9) pour obtenir une amplitude de signal suffisante (100mV) afin de simplifier le circuit de conditionnement du signal, tandis que la consommation d'\u00e9nergie du circuit unique n'est que de 1,8W, ce qui a un impact sur l'efficacit\u00e9 globale du variateur.&lt;0,01%.<\/p>\n<p><strong>2. contr\u00f4le de la pr\u00e9cision et de la coh\u00e9rence<\/strong><\/p>\n<ul>\n<li>Adopte un shunt de pr\u00e9cision de 0,5 grade, test\u00e9 en usine 100%<\/li>\n<li>Plusieurs shunts pour le m\u00eame onduleur s\u00e9lectionn\u00e9s dans le m\u00eame lot de production<\/li>\n<li>L'\u00e9cart de r\u00e9sistance entre les lots est contr\u00f4l\u00e9 \u00e0 \u00b10,2%.<\/li>\n<li>\u00c9tiquettes de regroupement des r\u00e9sistances, faciles \u00e0 adapter \u00e0 l'utilisation du client<\/li>\n<\/ul>\n<p><strong>3. l'optimisation des co\u00fbts<\/strong><\/p>\n<ul>\n<li>La conception standardis\u00e9e et la production de masse r\u00e9duisent les co\u00fbts<\/li>\n<li>Optimiser les ratios de mat\u00e9riaux pour r\u00e9duire les co\u00fbts des mat\u00e9riaux tout en maintenant les performances<\/li>\n<li>Une ligne de production automatis\u00e9e pour am\u00e9liorer l'efficacit\u00e9 de la production<\/li>\n<li>L'offre annuelle est sup\u00e9rieure \u00e0 1 million, l'effet d'\u00e9chelle est significatif.<\/li>\n<\/ul>\n<p><strong>4. la certification et la qualit\u00e9<\/strong><\/p>\n<ul>\n<li>Produits certifi\u00e9s CE et UL<\/li>\n<li>Coop\u00e9rer avec les clients pour obtenir les certifications T\u00dcV, CQC et autres.<\/li>\n<li>Assurance du syst\u00e8me de gestion de la qualit\u00e9 IATF 16949<\/li>\n<\/ul>\n<h3>R\u00e9sultats du projet<\/h3>\n<ul>\n<li><strong>Efficacit\u00e9 MPPT :<\/strong>Pr\u00e9cision de la mesure du courant \u00b10,5%, efficacit\u00e9 MPPT de l'onduleur &gt;99,5%<\/li>\n<li><strong>Coh\u00e9rence :<\/strong>Coh\u00e9rence des mesures de courant multiples&lt;\u00b10,3%, contr\u00f4le pr\u00e9cis et fiable des cordes<\/li>\n<li><strong>\u00c9chelle de l'offre :<\/strong>Avec un volume d'approvisionnement annuel de plus d'un million d'unit\u00e9s, nous sommes le plus grand fournisseur de shunts pour nos clients.<\/li>\n<li><strong>March\u00e9s mondiaux :<\/strong>Les produits sont vendus avec des onduleurs dans plus de 30 pays \u00e0 travers le monde, notamment en Europe, en Am\u00e9rique, en Asie-Pacifique et sur d'autres march\u00e9s importants.<\/li>\n<li><strong>Coop\u00e9ration \u00e0 long terme :<\/strong>Plus de 8 ans de coop\u00e9ration et de partenariats strat\u00e9giques approfondis.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Nous avons fourni une solution de shunt de d\u00e9tection de courant MPPT \u00e0 un fabricant mondial d'onduleurs photovolta\u00efques de premier plan, avec une fourniture annuelle de plus d'un million de pi\u00e8ces, et les produits sont vendus dans plus de 30 pays dans le monde entier.<\/p>","protected":false},"featured_media":683,"template":"","meta":[],"case_industry":[160],"class_list":["post-693","sf_case","type-sf_case","status-publish","has-post-thumbnail","hentry","case_industry-photovoltaic"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v26.9) - 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