ارائۀ یک توپولوژی جدید متقارن و نامتقارن برای اینورتر چندسطحی به‌منظور کاهش تعداد ادوات کلیدزنی

نویسندگان

گروه مهندسی برق و کامپیوتر، دانشکده فنی مهندسی،دانشگاه محقق اردبیلی

چکیده

در دهه‌های اخیر اینورترها نقش مهمی در سیستم‌های قدرت ایفا کرده‌اند و بهبود عملکرد آن‌ها هم از لحاظ ساختاری و هم از لحاظ کنترلی، جزء علایق محققان بوده است. در این مقاله یک اینورتر چندسطحی متقارن و نامتقارن جدید با هدف کاهش تعداد اجزای کلیدزنی به‌ویژه برای تعداد سطوح خروجی زیاد ارائه شده‌ است. این توپولوژی در مقایسه با توپولوژی‌های کلاسیک و ساختارهای متقارن ارائه‌شدۀ اخیر که سعی در کاهش ادوات کلیدزنی دارند، در تعداد سطح مشابه، حاوی تعداد کلید نیمه‌هادی قدرت کمتری است. برای نشان دادن کارایی ساختار پیشنهادی، یک مقایسۀ جامع بین توپولوژی پیشنهادی و توپولوژی‌های کلاسیک و ساختارهای ارائه‌شدۀ اخیر از حیث تعداد سوئیچ، تعداد درایور و تلفات توان ارائه شده است. توپولوژی پیشنهادی برای حالت 21 ‌سطحی متقارن و نیز 37 سطحی نامتقارن با استفاده از 14 سوئیچ در محیط Matlab/Simulink شبیه‌سازی شده و نمونۀ آزمایشگاهی آن برای تأیید کارکرد اینورتر پیشنهادی ساخته شده است. نتایج حاصل بیانگر صحت محاسبات و شبیه‌سازی بوده و نتایج آزمایشگاهی، تطابق دقیق با نتایج شبیه‌سازی را نشان می‌دهد.

کلیدواژه‌ها


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