یک مبدل دو ورودی جدید با کلیدزنی نرم برای سیستم های هیبرید انرژی سبز
محورهای موضوعی : مهندسی برق الکترونیک
احمد عبدالکاظم عیسی
1
(
دانشکده مهندسی برق،واحد اصفهان (خوراسگان)، دانشگاه آزاد اسلامی، خوراسگان، اصفهان، ایران
)
محمد حسین ارشادی
2
(
دانشکده مهندسی برق،واحد خمینی شهر، دانشگاه آزاد اسلامی،خمینی شهر، ایران
)
کلید واژه: مبدل دو ورودی, کلیدزنی نرم, بهره ولتاژ بالا, کلیدزنی در ولتاژ صفر.,
چکیده مقاله :
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.
In this paper, a new two-input converter with zero voltage switching for green energy hybrid systems is presented. In the proposed converter, a new auxiliary circuit is used to create zero voltage switching with the least number of auxiliary elements. The auxiliary circuit not only provides zero voltageswitching conditions, but also absorbs the energy of the leakage inductance and prevents voltage spikesacross the main switches. On the other hand, the use of coupled-inductors also increases the gain of the converter and greatly reduces the voltage stress on the switches. The proposed converter has been designed with a 120 watts power and simulated in PSICE software, and also a prototype has been made to prove the theoretical analysis of the circuit.
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