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تاثیرهارمونیک های جریان درسیستمهای سه فاز

نویسنده :مرتضی قندی
تاریخ:سه شنبه 5 شهریور 1392-03:00 ب.ظ

تاثیرهارمونیک های جریان درسیستمهای سه فاز

اگرهادی نول ،بدون آنکه کاهشی درجریان یکی ازفازها رخ داده باشد حامل جریان گردد ،باید جریان آن رادرتعیین جریان مجاز کابل درنظرگرفت.جریان هارمونیکی فازها ،برخلاف جریان هارمونیک اول ممکن است وقتی به نقطه نول می رسندخنثی نشوند.که بدترین نوع آن برای هارمونیک سوم رخ می دهد.
برای تاثیر هاررمونیک سوم در محاسبات ازجدول می توانید استفاده نمایید ،البته به این نکته باید توجه کرد ،اگرهارمونیک های دیگری مثل نهم و دوازدهم وجود داشته باشد یا مداردچارعدم تعادل نیز باشد دیگرضرایب تصحیح این جدول پاسخگو نمی باشد.

تاثیر هارمونیکها




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