{"id":214276,"date":"2022-12-21T22:28:54","date_gmt":"2022-12-21T21:28:54","guid":{"rendered":"https:\/\/educelec.com\/?page_id=214276"},"modified":"2026-01-09T11:05:23","modified_gmt":"2026-01-09T10:05:23","slug":"mot-asynch","status":"publish","type":"page","link":"https:\/\/educelec.com\/en\/mot-asynch\/","title":{"rendered":"moteurs asynchrone"},"content":{"rendered":"<p>[et_pb_section fb_built=\u00a0\u00bb1&Prime; admin_label=\u00a0\u00bbsection\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.1&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_margin=\u00a0\u00bb-50px||||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_margin=\u00a0\u00bb|0px||-30px|false|false\u00a0\u00bb custom_padding=\u00a0\u00bb|||0px|false|false\u00a0\u00bb hover_enabled=\u00a0\u00bb0&Prime; locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb sticky_enabled=\u00a0\u00bb0&Prime;]<\/p>\n<p><a href=\"https:\/\/educelec.com\/en\/\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-216559\" src=\"https:\/\/educelec.com\/wp-content\/uploads\/2025\/12\/chap-300x209.png\" alt=\"\" width=\"17\" height=\"12\" \/><\/a><a href=\"https:\/\/educelec.com\/en\/\">Accueil<\/a><a href=\"https:\/\/educelec.com\/en\/\">\u00a0&gt;<\/a> <a href=\"https:\/\/educelec.com\/en\/electrotech\/\">Electrotech <\/a><a href=\"https:\/\/educelec.com\/en\/electrotech\/\">&gt; <\/a><strong>Moteurs asynchrones<\/strong><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_font=\u00a0\u00bbAcme|700|||||||\u00a0\u00bb background_color=\u00a0\u00bb#88C4DD\u00a0\u00bb text_text_shadow_style=\u00a0\u00bbpreset1&Prime; text_text_shadow_blur_strength=\u00a0\u00bb2em\u00a0\u00bb text_text_shadow_color=\u00a0\u00bb#0047E0&Prime; locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb text_font_size__hover_enabled=\u00a0\u00bbon|desktop\u00a0\u00bb]<\/p>\n<blockquote>\n<h1 style=\"text-align: center;\"><strong>Exercices corrig\u00e9s<\/strong><\/h1>\n<h3 style=\"text-align: center;\"><strong>Calcul des moteurs asynchrones<\/strong><\/h3>\n<\/blockquote>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_margin=\u00a0\u00bb-50px||||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb background_color=\u00a0\u00bb#69D0FC\u00a0\u00bb min_height=\u00a0\u00bb40px\u00a0\u00bb height=\u00a0\u00bb40px\u00a0\u00bb custom_padding=\u00a0\u00bb7px|||18px|false|false\u00a0\u00bb border_radii=\u00a0\u00bbon|15px|15px|15px|15px\u00a0\u00bb border_width_all=\u00a0\u00bb2px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<ul>\n<li>\n<h3><strong>Exercice N\u00b0 1<\/strong><\/h3>\n<\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_margin=\u00a0\u00bb-25px||||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p><strong>Un moteur asynchrone t\u00e9trapolaire, le stator mont\u00e9 en triangle, fonctionne dans les conditions suivantes :<\/strong><\/p>\n<p><strong>La tension entre phases = U = 380 V; fr\u00e9quence = f = 60 Hz;<\/strong><\/p>\n<p><strong>La puissance utile = 5 kW; vitesse de rotation = n = 1710 tr\/min.; \u00a0= 0,9;<\/strong><\/p>\n<p><strong>Intensit\u00e9 en ligne I = 10 A.<\/strong><\/p>\n<p><strong>La r\u00e9sistance, mesur\u00e9e pour ce r\u00e9gime de marche, entre deux bornes du stator est R = 0,8 .<\/strong><\/p>\n<p><strong>On admettra, pour ce fonctionnement, que les pertes dans le fer sont \u00e9gales aux pertes par effet Joule dans le stator. Pour ce r\u00e9gime de marche, calculer : <\/strong><\/p>\n<ol>\n<li><strong>le glissement; le couple utile; l\u2019intensit\u00e9 du courant dans chaque phase du stator; <\/strong><\/li>\n<li><strong>les pertes du stator; la puissance absorb\u00e9e par le moteur; <\/strong><\/li>\n<li><strong>les pertes Joule du rotor; l\u2019ensemble des autres pertes du rotor; et le rendement global du moteur.<\/strong><\/li>\n<\/ol>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_margin=\u00a0\u00bb||12px||false|false\u00a0\u00bb custom_padding=\u00a0\u00bb0px||||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_toggle title=\u00a0\u00bbToucher pour afficher la solution\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb title_font_size=\u00a0\u00bb13px\u00a0\u00bb custom_margin=\u00a0\u00bb-30px||-25px||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p><a href=\"https:\/\/educelec.com\/wp-content\/uploads\/2022\/12\/arri.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-214149 alignnone size-medium\" src=\"https:\/\/educelec.com\/wp-content\/uploads\/2022\/12\/arri-300x211.png\" alt=\"\" width=\"300\" height=\"211\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>[\/et_pb_toggle][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_margin=\u00a0\u00bb||-100px||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb background_color=\u00a0\u00bb#69D0FC\u00a0\u00bb min_height=\u00a0\u00bb40px\u00a0\u00bb height=\u00a0\u00bb40px\u00a0\u00bb custom_padding=\u00a0\u00bb7px|||18px|false|false\u00a0\u00bb border_radii=\u00a0\u00bbon|15px|15px|15px|15px\u00a0\u00bb border_width_all=\u00a0\u00bb2px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<ul>\n<li>\n<h3><strong>Exercice N\u00b0 2<\/strong><\/h3>\n<\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_margin=\u00a0\u00bb-25px||||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p><strong>Un moteur asynchrone triphas\u00e9 t\u00e9trapolaire est aliment\u00e9 par un r\u00e9seau 380 V-50 Hz. La r\u00e9sistance du stator mesur\u00e9e entre deux fils de phase est de 0,9 .<\/strong><\/p>\n<p><strong>En fonctionnement \u00e0 vide, le moteur absorbe un courant de 1 A et une puissance de 400 W.<\/strong><\/p>\n<p><strong>1.1) D\u00e9terminer les pertes fer du stator et les pertes m\u00e9caniques en les supposant \u00e9gales.<\/strong><\/p>\n<p><strong>En charge nominale, la puissance utile sur l\u2019arbre du rotor est de 4 kW, le facteur de puissance de 0,85 et le rendement de 0,87.<\/strong><\/p>\n<p><strong>2.1) D\u00e9terminer : l\u2019intensit\u00e9 du courant absorb\u00e9; les pertes Joule au stator; les pertes Joule au rotor; le glissement et la vitesse du rotor exprim\u00e9e en nombre de tours par minute; et le couple utile.<\/strong><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_toggle title=\u00a0\u00bbToucher pour afficher la solution\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb title_font_size=\u00a0\u00bb13px\u00a0\u00bb custom_margin=\u00a0\u00bb-30px||-80px||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/educelec.com\/wp-content\/uploads\/2022\/12\/arri.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-214149 alignnone size-medium\" src=\"https:\/\/educelec.com\/wp-content\/uploads\/2022\/12\/arri-300x211.png\" alt=\"\" width=\"300\" height=\"211\" \/><\/a><\/p>\n<p>kjsnoangownsrgqaknqreqlknrhl\u00f6wekflkj<\/p>\n<p>[\/et_pb_toggle][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb background_color=\u00a0\u00bb#69D0FC\u00a0\u00bb min_height=\u00a0\u00bb40px\u00a0\u00bb height=\u00a0\u00bb40px\u00a0\u00bb custom_padding=\u00a0\u00bb7px|||18px|false|false\u00a0\u00bb border_radii=\u00a0\u00bbon|15px|15px|15px|15px\u00a0\u00bb border_width_all=\u00a0\u00bb2px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<ul>\n<li>\n<h3><strong>Exercice N\u00b0 3<\/strong><\/h3>\n<\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_margin=\u00a0\u00bb-25px||||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p><strong>Un moteur asynchrone triphas\u00e9, dont le stator est mont\u00e9 en \u00e9toile, est aliment\u00e9 par un r\u00e9seau 380 V entre phase 50 Hz. Chaque enroulement du stator a une r\u00e9sistance R = 0,4 W. Lors d&rsquo;un essai \u00e0 vide, le moteur tournant pratiquement \u00e0 1500 tr\/min, la puissance absorb\u00e9e est de<\/strong><\/p>\n<p><strong>\u00a0P<sub>V<\/sub> = 1150 W, le courant par fil de ligne est I<sub>V<\/sub> = 11,2 A.<\/strong><\/p>\n<p><strong>Un essai avec la charge nominale sous la m\u00eame tension de 380 V, 50 Hz, a donn\u00e9 les r\u00e9sultats suivants: glissement= 4%, puissance absorb\u00e9e : 18,1kW, et courant en ligne : 32 A.<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><strong>1) Essai \u00e0 vide :<\/strong><\/p>\n<ol>\n<li><strong>a) Calculer les pertes par effet Joule dans le stator lors de l&rsquo;essai \u00e0 vide. Que peut-on dire des pertes par effet Joule dans le rotor lors de cet essai? <\/strong><br \/><strong>b) En d\u00e9duire les pertes dans le fer sachant que les pertes m\u00e9caniques valent 510 W.<\/strong><\/li>\n<\/ol>\n<p><strong>2) Essai en charge :<\/strong><\/p>\n<ol>\n<li><strong>a) Calculer le facteur de puissance nominal et la fr\u00e9quence nominale de rotation.<\/strong><br \/><strong>b) Calculer la fr\u00e9quence des courants rotoriques pour un glissement de 4%. Que peut-on en d\u00e9duire pour les pertes dans le fer du rotor ?<\/strong><\/li>\n<\/ol>\n<p><strong>3) Calculer les pertes par effet Joule dans le stator et dans le rotor en charge nominale.<\/strong><br \/><strong>4) Calculer la puissance utile et le rendement du moteur en charge nominale.<\/strong><br \/><strong>5) Calculer le moment du couple utile nominale.<\/strong><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_margin=\u00a0\u00bb-20px||-100px||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_toggle title=\u00a0\u00bbToucher pour afficher la solution\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb title_font_size=\u00a0\u00bb13px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/educelec.com\/wp-content\/uploads\/2022\/12\/arri.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-214149 alignnone size-medium\" src=\"https:\/\/educelec.com\/wp-content\/uploads\/2022\/12\/arri-300x211.png\" alt=\"\" width=\"300\" height=\"211\" \/><\/a><\/p>\n<p>kjsnoangownsrgqaknqreqlknrhl\u00f6wekflkj<\/p>\n<p>[\/et_pb_toggle][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb background_color=\u00a0\u00bb#69D0FC\u00a0\u00bb min_height=\u00a0\u00bb40px\u00a0\u00bb height=\u00a0\u00bb40px\u00a0\u00bb custom_padding=\u00a0\u00bb7px|||18px|false|false\u00a0\u00bb border_radii=\u00a0\u00bbon|15px|15px|15px|15px\u00a0\u00bb border_width_all=\u00a0\u00bb2px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<ul>\n<li>\n<h3><strong>Exercice N\u00b0 4<\/strong><\/h3>\n<\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_margin=\u00a0\u00bb-25px||||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p><strong>Un moteur asynchrone \u00e0 rotor bobin\u00e9 et \u00e0 bagues est aliment\u00e9 par un r\u00e9seau triphas\u00e9 50Hz, 220V\/380V. Le couplage de l&rsquo;enroulement stator est en triangle, celui du rotor est en \u00e9toile. En mesurant \u00e0 chaud la r\u00e9sistance entre 2 bornes on trouve au stator R<sub>s<\/sub> = 0,267 W et au rotor R<sub>r<\/sub> = 0,1 W Un essai \u00e0 vide a \u00e9t\u00e9 effectu\u00e9 sur cette machine. Le moteur tourne pratiquement \u00e0 la vitesse de synchronisme (N = 1500 tr\/min).<\/strong><\/p>\n<p><strong>La m\u00e9thode des 2 wattm\u00e8tres indique: P<sub>1<\/sub> = 2200 W\u00a0; P<sub>2<\/sub> = -700 W\u00a0; I (courant de ligne) = 20 A.<\/strong><\/p>\n<p><strong>Un essai en charge est effectu\u00e9 \u00e0 l&rsquo;aide d&rsquo;une charge triphas\u00e9 \u00e9quilibr\u00e9e. On a les r\u00e9sultats suivants: N&rsquo; = 1450 tr\/min\u00a0\u00a0\u00a0\u00a0 P<sub>1<\/sub> = 14481\u00a0; P<sub>2<\/sub> = 5519 W\u00a0; I = 38,5 A. Sachant que les pertes m\u00e9caniques sont constantes et \u00e9gales \u00e0 700 W.<\/strong><br \/><strong>1) Calculer les pertes Joule au stator lors de cet essai \u00e0 vide. En d\u00e9duire les pertes fer au stator Pfs (que l&rsquo;on supposera constante dans la suite du probl\u00e8me).<\/strong><br \/><strong>2) Calculer les puissances active et r\u00e9active totales absorb\u00e9es par le moteur. En d\u00e9duire le facteur de puissance lorsqu&rsquo;on charge le moteur.<\/strong><br \/><strong>3) Calculer la fr\u00e9quence des courants rotoriques. Que peut-on dire sur les pertes fer au rotor (P<sub>fr<\/sub>)? <\/strong><br \/><strong>4) Faire un bilan de puissance et calculer P<sub>js<\/sub> et P<sub>tr<\/sub>. En d\u00e9duire les pertes Joule rotor P<sub>jr<\/sub>. Calculer la valeur efficace des courants rotoriques.<\/strong><br \/><strong>5) Calculer la puissance utile P<sub>u<\/sub> et le rendement du moteur lors de cet essai\u00a0;le couple utile T<sub>u<\/sub> et le couple \u00e9lectromagn\u00e9tique T.<\/strong><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_toggle title=\u00a0\u00bbToucher pour afficher la solution\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb title_font_size=\u00a0\u00bb13px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/educelec.com\/wp-content\/uploads\/2022\/12\/arri.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-214149 alignnone size-medium\" src=\"https:\/\/educelec.com\/wp-content\/uploads\/2022\/12\/arri-300x211.png\" alt=\"\" width=\"300\" height=\"211\" \/><\/a><\/p>\n<p>kjsnoangownsrgqaknqreqlknrhl\u00f6wekflkj<\/p>\n<p>[\/et_pb_toggle][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_button button_url=\u00a0\u00bbhttps:\/\/educelec.com\/electrotech\/\u00a0\u00bb button_text=\u00a0\u00bbRetour a la page pr\u00e9c\u00e9dente\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.1&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_button][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>","protected":false},"excerpt":{"rendered":"<p>Accueil\u00a0&gt; Electrotech &gt; Moteurs asynchronesExercices corrig\u00e9s Calcul des moteurs asynchrones Exercice N\u00b0 1 Un moteur asynchrone t\u00e9trapolaire, le stator mont\u00e9 en triangle, fonctionne dans les conditions suivantes : La tension entre phases = U = 380 V; fr\u00e9quence = f = 60 Hz; La puissance utile = 5 kW; vitesse de rotation = n = [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","om_disable_all_campaigns":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"class_list":["post-214276","page","type-page","status-publish","hentry"],"aioseo_notices":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>moteurs asynchrone - Exercices et Solutions en Electricit\u00e9, Electronique, Electrotechnique et Automatisme industrielle<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/educelec.com\/en\/mot-asynch\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"moteurs asynchrone - Exercices et Solutions en Electricit\u00e9, Electronique, Electrotechnique et Automatisme industrielle\" \/>\n<meta property=\"og:description\" content=\"Accueil\u00a0&gt; Electrotech &gt; Moteurs asynchronesExercices corrig\u00e9s Calcul des moteurs asynchrones Exercice N\u00b0 1 Un moteur asynchrone t\u00e9trapolaire, le stator mont\u00e9 en triangle, fonctionne dans les conditions suivantes : La tension entre phases = U = 380 V; fr\u00e9quence = f = 60 Hz; La puissance utile = 5 kW; vitesse de rotation = n = [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/educelec.com\/en\/mot-asynch\/\" \/>\n<meta property=\"og:site_name\" content=\"Exercices et Solutions en Electricit\u00e9, Electronique, Electrotechnique et Automatisme industrielle\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-09T10:05:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/educelec.com\/wp-content\/uploads\/2025\/12\/chap-e1766263997563.png\" \/>\n\t<meta property=\"og:image:width\" content=\"288\" \/>\n\t<meta property=\"og:image:height\" content=\"200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/educelec.com\/mot-asynch\/\",\"url\":\"https:\/\/educelec.com\/mot-asynch\/\",\"name\":\"moteurs asynchrone - Exercices et Solutions en Electricit\u00e9, Electronique, Electrotechnique et Automatisme industrielle\",\"isPartOf\":{\"@id\":\"https:\/\/educelec.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/educelec.com\/mot-asynch\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/educelec.com\/mot-asynch\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/educelec.com\/wp-content\/uploads\/2025\/12\/chap-300x209.png\",\"datePublished\":\"2022-12-21T21:28:54+00:00\",\"dateModified\":\"2026-01-09T10:05:23+00:00\",\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/educelec.com\/mot-asynch\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/educelec.com\/mot-asynch\/#primaryimage\",\"url\":\"https:\/\/educelec.com\/wp-content\/uploads\/2025\/12\/chap-300x209.png\",\"contentUrl\":\"https:\/\/educelec.com\/wp-content\/uploads\/2025\/12\/chap-300x209.png\"},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/educelec.com\/#website\",\"url\":\"https:\/\/educelec.com\/\",\"name\":\"Exercices et Solutions en Electricit\u00e9, Electronique, Electrotechnique et Automatisme industrielle\",\"description\":\"WordPress\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/educelec.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"moteurs asynchrone - Exercices et Solutions en Electricit\u00e9, Electronique, Electrotechnique et Automatisme industrielle","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/educelec.com\/en\/mot-asynch\/","og_locale":"en_US","og_type":"article","og_title":"moteurs asynchrone - Exercices et Solutions en Electricit\u00e9, Electronique, Electrotechnique et Automatisme industrielle","og_description":"Accueil\u00a0&gt; 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