یک مبدل دو ورودی جدید با کلیدزنی نرم برای سیستم های هیبرید انرژی سبز
الموضوعات :احمد عبدالکاظم عیسی 1 , محمد حسین ارشادی 2
1 - دانشکده مهندسی برق،واحد اصفهان (خوراسگان)، دانشگاه آزاد اسلامی، خوراسگان، اصفهان، ایران
2 - دانشکده مهندسی برق،واحد خمینی شهر، دانشگاه آزاد اسلامی،خمینی شهر، ایران
الکلمات المفتاحية: مبدل دو ورودی, کلیدزنی نرم, بهره ولتاژ بالا, کلیدزنی در ولتاژ صفر.,
ملخص المقالة :
در این مقاله یک مبدل دو ورودی جدید با کلیدزنی در ولتاژ صفر برای سیستمهای هیبرید انرژی سبز ارایه شده است. در مبدل پیشنهادی از یک مدار کمکی جدید برای ایجاد شرایط کلیدزنی در ولتاژ صفر با کمترین تعداد المان کمکی استفاده شده است. مدار کمکی نه تنها شرایط کلیدزنی در ولتاژ صفر را فراهم می کند بلکه انرژی سلف نشتی را نیز در خود جذب کرده و مانع جهشهای ولتاژ دو سر سوییچهای اصلی مدار می شود. از طرفی استفاده از سلفهای تزویج شده نیز بهره مبدل را افزایش داده و استرس ولتاژ روی سوییچها را به شدت کاهش می دهد. مبدل پیشنهادی در توان 120 وات طراحی و در نرم افزار PSpice شبیه سازی شده استو همچنین برای اثبات تحلیلهای تئوری مدار یک نمونه آزمایشگاهی از آن ساخته شده است.
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