الرئيسية variateur de vitesse

ما هو VFD وما هي تطبيقاته في التحكم الصناعي؟

س: ما هو VFD وما هي تطبيقاته في التحكم الصناعي؟

ج: variable frequency drive (VFD)
عبارة عن جهاز مصنوع من اشباه الموصلات يستخدم للتحكم في سرعة المحركات وايضا لاغراض الحماية.حيث يمكنه تشغيل وايقاف المحركات بصورة سلسة smooth وتتم هذه العملية عن طريق تغيير تردد المصدر frequency الذي يغذي المحرك.

# مبدأ عمل ال VFD :
- يقوم ال VFD بالتحكم في المحرك عن طريق تغيير تردد جهد المصدر ذلك لان السرعة تتناسب طرديا مع جهد المصدر.
- في ال VFD يتم تحويل الجهد الى DC (converting ) ثم يتم تحويله مجددا الى جهد AC ( inverting ) بالقيمة المطلوب.
- يتم زيادة سرعة المحرك تدريجيا من ال 0 و حتى ال full speed عن طريق زيادة تردد موجة الجهد ( بعد عملية التحويل) من Hz 0 حتي التردد المطلوب (50 / 60) Hz .

# مميزات ال VFD :
- توفر الطاقة.
- التحكم الكامل في سرعة المحرك.
- يمكن برمجتها programming لتغير سرعتها حسب معاملات اخرى مثل الضغط، مقدار التدفق flow وغيرها .
- الانسب في التطبيقات التي تتطلب الحفاظ على سرعة ثابتة مهما تغير الحمل مثل : elevator, crushes, mixers وغيرها.
- توفر حماية من الحمل الزائد overload protection .

الأقسام variateur de vitesse

أخر المواضيع من قسم : variateur de vitesse

تعليقات

4 تعليقات

إرسال تعليق

somec الأربعاء, أبريل 08, 2020

شكرا
إرسال ردحذف
Unknown السبت, نوفمبر 21, 2020

معلومات قيمة
إرسال ردحذف
Unknown السبت, نوفمبر 21, 2020

شكرا
إرسال ردحذف
غير معرف الأربعاء, نوفمبر 16, 2022

هل يعمل vfd الي جعل تيار الاقلاع مساوي للصفر ..؟
إرسال ردحذف

إرسال تعليق

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'\u0645\u0634\u0627\u0631\u0643\u0629 \u0625\u0644\u0649 Pinterest', 'target': 'pinterest'}, {'name': '\u0628\u0631\u064a\u062f \u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a', 'key': 'email', 'shareMessage': '\u0628\u0631\u064a\u062f \u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a', 'target': 'email'}], 'disableGooglePlus': true, 'googlePlusShareButtonWidth': 0, 'googlePlusBootstrap': '\x3cscript type\x3d\x22text/javascript\x22\x3ewindow.___gcfg \x3d {\x27lang\x27: \x27ar\x27};\x3c/script\x3e'}, 'hasCustomJumpLinkMessage': true, 'jumpLinkMessage': 'Read more \xbb', 'pageType': 'item', 'postId': '5494093005659394845', 'postImageThumbnailUrl': 'https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhXWjK92_ZXih3PYeCm51IXpcs9GF2orwAkY7MJsZ3LkzLOk2DgcGuJjPLUIZHxibOPnm1jrgjWEXSjUzFhUytjsrVjoEtyCA_QhYmAkoUpxgq7Pwt1NiPMTrsfTLSPDHclSPAKXgox2WkU/s72-c/FB_IMG_1574845151609.jpg', 'postImageUrl': 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\u0627\u0644\u0635\u0646\u0627\u0639\u064a\u061f\n\n\n\n\u062c: variable frequency drive (VFD) \n\n\u0639\u0628\u0627\u0631\u0629 \u0639\u0646 \u062c\u0647\u0627\u0632 \u0645\u0635\u0646\u0648\u0639 \u0645\u0646 \u0627\u0634\u0628\u0627\u0647 \u0627\u0644\u0645\u0648\u0635\u0644\u0627\u062a \u064a\u0633\u062a\u062e\u062f\u0645 \u0644\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0633\u0631\u0639\u0629 \u0627\u0644\u0645\u062d\u0631\u0643\u0627\u062a \u0648\u0627\u064a\u0636\u0627 \u0644\u0627\u063a\u0631\u0627\u0636 \u0627\u0644\u062d\u0645\u0627\u064a\u0629.\u062d\u064a\u062b \u064a\u0645\u0643\u0646\u0647 \u062a\u0634\u063a\u064a\u0644 \u0648\u0627\u064a\u0642\u0627\u0641 \u0627\u0644\u0645\u062d\u0631\u0643\u0627\u062a \u0628\u0635\u0648\u0631\u0629 \u0633\u0644\u0633\u0629 smooth \u0648\u062a\u062a\u0645 \u0647\u0630\u0647 \u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u0639\u0646 \u0637\u0631\u064a\u0642 \u062a\u063a\u064a\u064a\u0631 \u062a\u0631\u062f\u062f \u0627\u0644\u0645\u0635\u062f\u0631 frequency \u0627\u0644\u0630\u064a \u064a\u063a\u0630\u064a \u0627\u0644\u0645\u062d\u0631\u0643.\n\n\n\n# \u0645\u0628\u062f\u0623 \u0639\u0645\u0644 \u0627\u0644 VFD :\n\n- \u064a\u0642\u0648\u0645 \u0627\u0644 VFD \u0628\u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0645\u062d\u0631\u0643 \u0639\u0646 \u0637\u0631\u064a\u0642 \u062a\u063a\u064a\u064a\u0631 \u062a\u0631\u062f\u062f \u062c\u0647\u062f \u0627\u0644\u0645\u0635\u062f\u0631 \u0630\u0644\u0643 \u0644\u0627\u0646 \u0627\u0644\u0633\u0631\u0639\u0629 \u062a\u062a\u0646\u0627\u0633\u0628 \u0637\u0631\u062f\u064a\u0627 \u0645\u0639 \u062c\u0647\u062f \u0627\u0644\u0645\u0635\u062f\u0631.\n\n- \u0641\u064a \u0627\u0644 VFD \u064a\u062a\u0645 \u062a\u062d\u0648\u064a\u0644 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0649 DC (converting ) \u062b\u0645 \u064a\u062a\u0645 \u062a\u062d\u0648\u064a\u0644\u0647 \u0645\u062c\u062f\u062f\u0627 \u0627\u0644\u0649 \u062c\u0647\u062f AC ( inverting ) \u0628\u0627\u0644\u0642\u064a\u0645\u0629 \u0627\u0644\u0645\u0637\u0644\u0648\u0628.\n\n- \u064a\u062a\u0645 \u0632\u064a\u0627\u062f\u0629 \u0633\u0631\u0639\u0629 \u0627\u0644\u0645\u062d\u0631\u0643 \u062a\u062f\u0631\u064a\u062c\u064a\u0627 \u0645\u0646 \u0627\u0644 0 \u0648 \u062d\u062a\u0649 \u0627\u0644 full speed \u0639\u0646 \u0637\u0631\u064a\u0642 \u0632\u064a\u0627\u062f\u0629 \u062a\u0631\u062f\u062f \u0645\u0648\u062c\u0629 \u0627\u0644\u062c\u0647\u062f ( \u0628\u0639\u062f \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062a\u062d\u0648\u064a\u0644) \u0645\u0646 Hz 0 \u062d\u062a\u064a \u0627\u0644\u062a\u0631\u062f\u062f \u0627\u0644\u0645\u0637\u0644\u0648\u0628 (50 / 60) Hz .\n\n\n\n# \u0645\u0645\u064a\u0632\u0627\u062a \u0627\u0644 VFD :\n\n- \u062a\u0648\u0641\u0631 \u0627\u0644\u0637\u0627\u0642\u0629.\n\n- \u0627\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0643\u0627\u0645\u0644 \u0641\u064a \u0633\u0631\u0639\u0629 \u0627\u0644\u0645\u062d\u0631\u0643.\n\n- \u064a\u0645\u0643\u0646 \u0628\u0631\u0645\u062c\u062a\u0647\u0627 programming \u0644\u062a\u063a\u064a\u0631 \u0633\u0631\u0639\u062a\u0647\u0627 \u062d\u0633\u0628 \u0645\u0639\u0627\u0645\u0644\u0627\u062a \u0627\u062e\u0631\u0649 \u0645\u062b\u0644 \u0627\u0644\u0636\u063a\u0637\u060c \u0645\u0642\u062f\u0627\u0631 \u0627\u0644\u062a\u062f\u0641\u0642 flow \u0648\u063a\u064a\u0631\u0647\u0627 .\n\n- \u0627\u0644\u0627\u0646\u0633\u0628 \u0641\u064a \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u062a\u0637\u0644\u0628 \u0627\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u0649 \u0633\u0631\u0639\u0629 \u062b\u0627\u0628\u062a\u0629 \u0645\u0647\u0645\u0627 \u062a\u063a\u064a\u0631 \u0627\u0644\u062d\u0645\u0644 \u0645\u062b\u0644 : elevator, crushes, mixers \u0648\u063a\u064a\u0631\u0647\u0627.\n\n- \u062a\u0648\u0641\u0631 \u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u0632\u0627\u0626\u062f overload protection'}}, {'name': 'features', 'data': {}}, {'name': 'messages', 'data': {'edit': '\u062a\u0639\u062f\u064a\u0644', 'linkCopiedToClipboard': '\u062a\u0645 \u0646\u0633\u062e \u0627\u0644\u0631\u0627\u0628\u0637 \u0625\u0644\u0649 \u0627\u0644\u062d\u0627\u0641\u0638\u0629', 'ok': '\u062d\u0633\u0646\u064b\u0627', 'postLink': '\u0631\u0627\u0628\u0637 \u0627\u0644\u0645\u0634\u0627\u0631\u0643\u0629'}}, {'name': 'template', 'data': {'name': 'custom', 'localizedName': '\u0645\u062e\u0635\u0635', 'isResponsive': true, 'isAlternateRendering': false, 'isCustom': true}}, {'name': 'view', 'data': {'classic': {'name': 'classic', 'url': '?view\x3dclassic'}, 'flipcard': {'name': 'flipcard', 'url': '?view\x3dflipcard'}, 'magazine': {'name': 'magazine', 'url': '?view\x3dmagazine'}, 'mosaic': {'name': 'mosaic', 'url': '?view\x3dmosaic'}, 'sidebar': {'name': 'sidebar', 'url': '?view\x3dsidebar'}, 'snapshot': {'name': 'snapshot', 'url': '?view\x3dsnapshot'}, 'timeslide': {'name': 'timeslide', 'url': '?view\x3dtimeslide'}, 'isMobile': false, 'title': ' \u0645\u0627 \u0647\u0648 VFD \u0648\u0645\u0627 \u0647\u064a \u062a\u0637\u0628\u064a\u0642\u0627\u062a\u0647 \u0641\u064a \u0627\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u061f', 'description': '\u0633: \u0645\u0627 \u0647\u0648 VFD \u0648\u0645\u0627 \u0647\u064a \u062a\u0637\u0628\u064a\u0642\u0627\u062a\u0647 \u0641\u064a \u0627\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u061f\n\n\n\n\u062c: variable frequency drive (VFD) \n\n\u0639\u0628\u0627\u0631\u0629 \u0639\u0646 \u062c\u0647\u0627\u0632 \u0645\u0635\u0646\u0648\u0639 \u0645\u0646 \u0627\u0634\u0628\u0627\u0647 \u0627\u0644\u0645\u0648\u0635\u0644\u0627\u062a \u064a\u0633\u062a\u062e\u062f\u0645 \u0644\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0633\u0631\u0639\u0629 \u0627\u0644\u0645\u062d\u0631\u0643\u0627\u062a \u0648\u0627\u064a\u0636\u0627 \u0644\u0627\u063a\u0631\u0627\u0636 \u0627\u0644\u062d\u0645\u0627\u064a\u0629.\u062d\u064a\u062b \u064a\u0645\u0643\u0646\u0647 \u062a\u0634\u063a\u064a\u0644 \u0648\u0627\u064a\u0642\u0627\u0641 \u0627\u0644\u0645\u062d\u0631\u0643\u0627\u062a \u0628\u0635\u0648\u0631\u0629 \u0633\u0644\u0633\u0629 smooth \u0648\u062a\u062a\u0645 \u0647\u0630\u0647 \u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u0639\u0646 \u0637\u0631\u064a\u0642 \u062a\u063a\u064a\u064a\u0631 \u062a\u0631\u062f\u062f \u0627\u0644\u0645\u0635\u062f\u0631 frequency \u0627\u0644\u0630\u064a \u064a\u063a\u0630\u064a \u0627\u0644\u0645\u062d\u0631\u0643.\n\n\n\n# \u0645\u0628\u062f\u0623 \u0639\u0645\u0644 \u0627\u0644 VFD :\n\n- \u064a\u0642\u0648\u0645 \u0627\u0644 VFD \u0628\u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0645\u062d\u0631\u0643 \u0639\u0646 \u0637\u0631\u064a\u0642 \u062a\u063a\u064a\u064a\u0631 \u062a\u0631\u062f\u062f \u062c\u0647\u062f \u0627\u0644\u0645\u0635\u062f\u0631 \u0630\u0644\u0643 \u0644\u0627\u0646 \u0627\u0644\u0633\u0631\u0639\u0629 \u062a\u062a\u0646\u0627\u0633\u0628 \u0637\u0631\u062f\u064a\u0627 \u0645\u0639 \u062c\u0647\u062f \u0627\u0644\u0645\u0635\u062f\u0631.\n\n- \u0641\u064a \u0627\u0644 VFD \u064a\u062a\u0645 \u062a\u062d\u0648\u064a\u0644 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0649 DC (converting ) \u062b\u0645 \u064a\u062a\u0645 \u062a\u062d\u0648\u064a\u0644\u0647 \u0645\u062c\u062f\u062f\u0627 \u0627\u0644\u0649 \u062c\u0647\u062f AC ( inverting ) \u0628\u0627\u0644\u0642\u064a\u0645\u0629 \u0627\u0644\u0645\u0637\u0644\u0648\u0628.\n\n- \u064a\u062a\u0645 \u0632\u064a\u0627\u062f\u0629 \u0633\u0631\u0639\u0629 \u0627\u0644\u0645\u062d\u0631\u0643 \u062a\u062f\u0631\u064a\u062c\u064a\u0627 \u0645\u0646 \u0627\u0644 0 \u0648 \u062d\u062a\u0649 \u0627\u0644 full speed \u0639\u0646 \u0637\u0631\u064a\u0642 \u0632\u064a\u0627\u062f\u0629 \u062a\u0631\u062f\u062f \u0645\u0648\u062c\u0629 \u0627\u0644\u062c\u0647\u062f ( \u0628\u0639\u062f \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062a\u062d\u0648\u064a\u0644) \u0645\u0646 Hz 0 \u062d\u062a\u064a \u0627\u0644\u062a\u0631\u062f\u062f \u0627\u0644\u0645\u0637\u0644\u0648\u0628 (50 / 60) Hz .\n\n\n\n# \u0645\u0645\u064a\u0632\u0627\u062a \u0627\u0644 VFD :\n\n- \u062a\u0648\u0641\u0631 \u0627\u0644\u0637\u0627\u0642\u0629.\n\n- \u0627\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0643\u0627\u0645\u0644 \u0641\u064a \u0633\u0631\u0639\u0629 \u0627\u0644\u0645\u062d\u0631\u0643.\n\n- \u064a\u0645\u0643\u0646 \u0628\u0631\u0645\u062c\u062a\u0647\u0627 programming \u0644\u062a\u063a\u064a\u0631 \u0633\u0631\u0639\u062a\u0647\u0627 \u062d\u0633\u0628 \u0645\u0639\u0627\u0645\u0644\u0627\u062a \u0627\u062e\u0631\u0649 \u0645\u062b\u0644 \u0627\u0644\u0636\u063a\u0637\u060c \u0645\u0642\u062f\u0627\u0631 \u0627\u0644\u062a\u062f\u0641\u0642 flow \u0648\u063a\u064a\u0631\u0647\u0627 .\n\n- \u0627\u0644\u0627\u0646\u0633\u0628 \u0641\u064a \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u062a\u0637\u0644\u0628 \u0627\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u0649 \u0633\u0631\u0639\u0629 \u062b\u0627\u0628\u062a\u0629 \u0645\u0647\u0645\u0627 \u062a\u063a\u064a\u0631 \u0627\u0644\u062d\u0645\u0644 \u0645\u062b\u0644 : elevator, crushes, mixers \u0648\u063a\u064a\u0631\u0647\u0627.\n\n- \u062a\u0648\u0641\u0631 \u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u0632\u0627\u0626\u062f overload protection', 'featuredImage': 'https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhXWjK92_ZXih3PYeCm51IXpcs9GF2orwAkY7MJsZ3LkzLOk2DgcGuJjPLUIZHxibOPnm1jrgjWEXSjUzFhUytjsrVjoEtyCA_QhYmAkoUpxgq7Pwt1NiPMTrsfTLSPDHclSPAKXgox2WkU/s400/FB_IMG_1574845151609.jpg', 'url': 'https://www.electrobrahim.com/2019/11/vfd.html', 'type': 'item', 'isSingleItem': true, 'isMultipleItems': false, 'isError': false, 'isPage': false, 'isPost': true, 'isHomepage': false, 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