ما هو مبدأ PWM المعدل ؟-أخبار الشركة-شنتشن بويت المحدودة

ما هو مبدأ PWM المعدل ؟

26,Mar,2026

مشاهدات الصفحة:

عندما يدخل المعدل حالة عمل ثابتة ، يكون جهد التيار المستمر الناتج ثابتًا ، ويتم تشغيل أذرع الجسر ثلاثية الطور لجسر المعدل وفقًا لقاعدة تعديل عرض النبضة الجيبية.

عندما يكون تردد التبديل مرتفعًا جدًا ، نظرًا لتأثير الترشيح للمحث ، يكون التيار التوافقي الناتج عن الجهد التوافقي عالي الترتيب صغيرًا جدًا. إذا تم النظر فقط في الموجات الأساسية للتيار والجهد ، فيمكن اعتبار جسر المعدل مصدرًا مثاليًا لجهد التيار المتردد ثلاثي الطور.. من خلال ضبط قيمة ومرحلة كمية التحكم بشكل مناسب ، يمكن التحكم في مرحلة التيار الوارد ، ويمكن تحقيق الغرض من تغيير عامل القدرة. من بينها ، التحكم في قيمة التيار الوارد للتحكم في الطاقة الواردة إلى المحول يتحكم أيضًا في الجهد الجانبي DC..

يمكن ملاحظة أن أهداف التحكم في مقوم PWM هي التيار الوارد والجهد الناتج ، والتحكم في تيار الإدخال هو مفتاح التحكم في المعدل. الهدف من التلاعب بالتيار الوارد هو جعل الشكل الموجي الحالي جيبيًا وفي الطور مع الجهد الوارد.

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ما هو مبدأ PWM المعدل ؟

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