{"id":7593,"date":"2023-06-02T09:15:41","date_gmt":"2023-06-02T07:15:41","guid":{"rendered":"https:\/\/cubeconcepts.de\/?p=7593"},"modified":"2025-05-14T17:02:40","modified_gmt":"2025-05-14T15:02:40","slug":"le-facteur-de-dimensionnement-pour-les-onduleurs","status":"publish","type":"post","link":"https:\/\/cubeconcepts.de\/fr\/der-dimensionierungsfaktor-fuer-wechselrichter\/","title":{"rendered":"Le facteur de dimensionnement pour les onduleurs"},"content":{"rendered":"<p>Le facteur de dimensionnement des onduleurs d\u00e9crit le rapport entre le courant continu (CC) maximal pouvant \u00eatre obtenu de tous les modules photovolta\u00efques install\u00e9s et la puissance de sortie en courant alternatif (CA) maximale de l'ensemble de l'installation photovolta\u00efque. Il constitue la base de dimensionnement pour la taille et le nombre d'onduleurs n\u00e9cessaires pour convertir l'\u00e9lectricit\u00e9 solaire en courant alternatif conforme au r\u00e9seau et adapt\u00e9 au raccordement au r\u00e9seau \u00e9lectrique public ou \u00e0 la consommation directe dans l'entreprise. Le facteur de dimensionnement est calcul\u00e9 \u00e0 partir du quotient de la puissance CC de l'onduleur et de la puissance PV. En cas de sous-dimensionnement, la valeur est sup\u00e9rieure \u00e0 100 et en cas de surdimensionnement, elle est inf\u00e9rieure \u00e0 100 %. Un facteur de dimensionnement de 100 % signifie donc, par exemple, que pour une puissance PV install\u00e9e de 700 kWp, la puissance de l'onduleur DC est \u00e9galement de 700 KW. Une telle constellation n'est cependant pas toujours optimale ou la plus \u00e9conomique. C'est pourquoi le facteur de dimensionnement doit \u00eatre recalcul\u00e9 individuellement lors de la planification de chaque installation photovolta\u00efque commerciale.&nbsp;&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image alignright size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"989\" height=\"751\" src=\"https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/06\/MicrosoftTeams-image.png\" alt=\"\" class=\"wp-image-7594\" style=\"width:614px;height:466px\" srcset=\"https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/06\/MicrosoftTeams-image.png 989w, https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/06\/MicrosoftTeams-image-300x228.png 300w, https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/06\/MicrosoftTeams-image-768x583.png 768w\" sizes=\"(max-width: 989px) 100vw, 989px\" \/><figcaption class=\"wp-element-caption\"><em>Exemple : planification d'une installation en toiture de 700 kWp orient\u00e9e est-ouest - chaque couleur repr\u00e9sente une cha\u00eene de modules distincte.<\/em><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Onduleurs et cha\u00eenes de modules<\/h2>\n\n\n\n<p>La planification de grandes installations photovolta\u00efques pour les entreprises est rendue complexe par le fait que seuls les modules solaires dont la puissance r\u00e9elle est identique doivent \u00eatre raccord\u00e9s \u00e0 un onduleur. Dans une telle cha\u00eene, tous les modules doivent donc avoir la m\u00eame orientation, la m\u00eame inclinaison et le m\u00eame ombrage pour que l'onduleur puisse convertir efficacement le courant continu en courant alternatif. Ainsi, si diff\u00e9rents <a href=\"https:\/\/cubeconcepts.de\/fr\/les-locaux-commerciaux-et-industriels-appropries-pour-les-installations-photovoltaiques\/\">Toitures de halls<\/a>Si l'on planifie des abris de voiture solaires, des toitures solaires ou des champs au sol avec des orientations, des inclinaisons et des ombrages diff\u00e9rents, il faut \u00e0 chaque fois calculer une cha\u00eene de modules et la raccorder \u00e0 un tracker MPP des onduleurs ou \u00e0 un tracker MPP d'un onduleur multistring. Pour rester dans le cadre d'une installation de 700 kWp, il faut d\u00e9j\u00e0 calculer environ 80 cha\u00eenes lors de la planification d'une installation PV simple sur toit de cette dimension si l'installation doit avoir une orientation est-ouest, car le nombre de modules par cha\u00eene ne peut pas non plus \u00eatre illimit\u00e9 : les onduleurs les plus puissants peuvent aujourd'hui convertir au maximum 1.000 volts par cha\u00eene, ce qui correspond environ \u00e0 une puissance de 20 modules.  <\/p>\n\n\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><img decoding=\"async\" width=\"701\" height=\"402\" src=\"https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/06\/MicrosoftTeams-image-1.png\" alt=\"\" class=\"wp-image-7601\" style=\"width:614px;height:352px\" srcset=\"https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/06\/MicrosoftTeams-image-1.png 701w, https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/06\/MicrosoftTeams-image-1-300x172.png 300w\" sizes=\"(max-width: 701px) 100vw, 701px\" \/><figcaption class=\"wp-element-caption\"><em>Planification d'une seule cha\u00eene avec un facteur de dimensionnement de 117,9 %<\/em><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">La plupart du temps, les onduleurs fonctionnent \u00e0 charge partielle<\/h2>\n\n\n\n<p>Avec un facteur de dimensionnement pour les onduleurs de 100 %, on part du principe que dans des conditions id\u00e9ales, c'est-\u00e0-dire en cas d'ensoleillement optimal sans nuages et de temp\u00e9ratures inf\u00e9rieures \u00e0 25\u00b0, chaque string et son onduleur fournissent le meilleur rendement \u00e9lectrique possible. De telles conditions sont toutefois rares et la plupart du temps, un onduleur fonctionne en charge partielle. Et c'est justement l\u00e0 que r\u00e9side le probl\u00e8me : tous les onduleurs ne fonctionnent plus aussi efficacement en charge partielle. Cet effet commence \u00e0 se faire sentir \u00e0 partir d'une baisse de puissance de 20 % du string et d'un fonctionnement de l'onduleur \u00e0 80 % de charge partielle. Outre les co\u00fbts d'investissement plus \u00e9lev\u00e9s des grands onduleurs, un sous-dimensionnement est donc tout \u00e0 fait rentable.<\/p>\n\n\n\n<figure class=\"wp-block-image alignright size-full is-resized\"><img decoding=\"async\" width=\"579\" height=\"626\" src=\"https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/06\/Screenshot-2023-06-02-090019.jpg\" alt=\"\" class=\"wp-image-7608\" style=\"width:394px;height:425px\" srcset=\"https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/06\/Screenshot-2023-06-02-090019.jpg 579w, https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/06\/Screenshot-2023-06-02-090019-277x300.jpg 277w\" sizes=\"(max-width: 579px) 100vw, 579px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Un facteur de dimensionnement pour les onduleurs sup\u00e9rieur \u00e0 100 % est rentable<\/h2>\n\n\n\n<p>Lors de la planification \u00e9conomique d'une installation photovolta\u00efque compl\u00e8te pour une entreprise, le calcul et le dimensionnement des onduleurs jouent ainsi un r\u00f4le d\u00e9cisif. S'ils sont sous-dimensionn\u00e9s, les pics de puissance ne sont \u00e9cr\u00eat\u00e9s que lorsque les conditions sont id\u00e9ales. Cette perte d'\u00e9nergie sur l'ensemble de l'ann\u00e9e d'une installation photovolta\u00efque est g\u00e9n\u00e9ralement marginale et doit ensuite \u00eatre compar\u00e9e aux co\u00fbts d'investissement plus \u00e9lev\u00e9s pour des onduleurs plus grands. Pour une installation de 700 kWp, qui pourrait produire environ 630 000 \u00e0 700 000 kWh par an selon le site, si elle \u00e9tait planifi\u00e9e avec un facteur de dimensionnement de 100 %, la perte d'\u00e9nergie sous nos latitudes est en moyenne de 4 500 kWh avec un sous-dimensionnement de 120 %. En revanche, il faut compter plusieurs dizaines de milliers d'euros pour des onduleurs dont la puissance nominale est plus \u00e9lev\u00e9e. En fonction de l'intensit\u00e9 du rayonnement solaire, des facteurs de dimensionnement compris entre 110 et 130 % sont consid\u00e9r\u00e9s comme particuli\u00e8rement \u00e9conomiques en Europe. Rien qu'en Allemagne, cette valeur peut varier de +\/- 5 % selon le site. <\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/cubeconcepts.de\/fr\/categorie\/themes-photovoltaiques\/\">Retour \u00e0 l'aper\u00e7u<\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\t\t<div data-elementor-type=\"section\" data-elementor-id=\"15300\" class=\"elementor elementor-15300\" data-elementor-post-type=\"elementor_library\">\n\t\t\t<div class=\"elementor-element elementor-element-7720627 e-flex e-con-boxed e-con e-parent\" data-id=\"7720627\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-e2d7cf1 e-con-full e-flex e-con e-child\" data-id=\"e2d7cf1\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-7f42313 e-con-full e-flex e-con e-child\" data-id=\"7f42313\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-42660e6 elementor-widget elementor-widget-heading\" data-id=\"42660e6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Bulletin d'information sur l'\u00e9nergie<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b495a97 elementor-widget elementor-widget-spacer\" data-id=\"b495a97\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-916e623 elementor-widget elementor-widget-text-editor\" data-id=\"916e623\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Restez toujours \u00e0 jour !<\/p><p><strong>Vos avantages :<\/strong><\/p><p>\u2713 Derni\u00e8res nouvelles sur les \u00e9nergies renouvelables<\/p><p>\u2713 Mises \u00e0 jour sur le droit de l'\u00e9nergie &amp; les subventions<\/p><p>\u2713 Expertise sur les th\u00e8mes du PV et de la durabilit\u00e9<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a28f7a5 elementor-widget elementor-widget-spacer\" data-id=\"a28f7a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-397a653 elementor-widget elementor-widget-button\" data-id=\"397a653\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#elementor-action%3Aaction%3Dpopup%3Aopen%26settings%3DeyJpZCI6IjE1MDQ0IiwidG9nZ2xlIjpmYWxzZX0%3D\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">S'inscrire maintenant<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0648968 e-con-full e-flex e-con e-child\" data-id=\"0648968\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e4654f0 elementor-widget elementor-widget-image\" data-id=\"e4654f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/cubeconcepts.de\/wp-content\/uploads\/2024\/06\/Newsletter-Mockup-1024x768.png\" class=\"attachment-large size-large wp-image-15431\" alt=\"\" srcset=\"https:\/\/cubeconcepts.de\/wp-content\/uploads\/2024\/06\/Newsletter-Mockup-1024x768.png 1024w, https:\/\/cubeconcepts.de\/wp-content\/uploads\/2024\/06\/Newsletter-Mockup-300x225.png 300w, https:\/\/cubeconcepts.de\/wp-content\/uploads\/2024\/06\/Newsletter-Mockup-768x576.png 768w, https:\/\/cubeconcepts.de\/wp-content\/uploads\/2024\/06\/Newsletter-Mockup.png 1500w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Der Dimensionierungsfaktor f\u00fcr Wechselrichter beschreibt das Verh\u00e4ltnis zwischen dem maximal gewinnbaren Gleichstrom (DC) aller installierten Photovoltaikmodule und der maximalen Wechselstrom-Ausgangsleistung (AC) der gesamten PV-Anlage. Er bildet die Bemessungsgrundlage f\u00fcr die Gr\u00f6\u00dfe und Anzahl der notwendigen Wechselrichter, um den Solarstrom in netzkonformen Wechselstrom umzuwandeln, der f\u00fcr den Anschluss an das \u00f6ffentliche Stromnetz oder f\u00fcr den direkten [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":7596,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[50,25],"tags":[],"class_list":["post-7593","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-photovoltaik-themen-in-deutschland-wissenswertes-fuer-energieprojekte","category-photovoltaik-themen"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Dimensionierungsfaktor f\u00fcr Wechselrichter | CUBE CONCEPTS<\/title>\n<meta name=\"description\" content=\"Der Dimensionierungsfaktor f\u00fcr Wechselrichter spielt eine entscheidende Rolle f\u00fcr die Wirtschaftlichkeit von Photovoltaikanlagen.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cubeconcepts.de\/fr\/le-facteur-de-dimensionnement-pour-les-onduleurs\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dimensionierungsfaktor f\u00fcr Wechselrichter | CUBE CONCEPTS\" \/>\n<meta property=\"og:description\" content=\"Der Dimensionierungsfaktor f\u00fcr Wechselrichter spielt eine entscheidende Rolle f\u00fcr die Wirtschaftlichkeit von Photovoltaikanlagen.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cubeconcepts.de\/fr\/le-facteur-de-dimensionnement-pour-les-onduleurs\/\" \/>\n<meta property=\"og:site_name\" content=\"CUBE CONCEPTS\" \/>\n<meta property=\"article:published_time\" content=\"2023-06-02T07:15:41+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-05-14T15:02:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/06\/ricardo-gomez-angel-MagdWoazARo-unsplash-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1433\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Guido Steenmans\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Guido Steenmans\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" 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