مبدل سوییچینگ بوست سری بسیار افزاینده با سلف تزویج و اسنابر غیرفعال بدون تلفات
محورهای موضوعی :
مهندسی برق الکترونیک
زینب عبدالامیر الدباغ
1
,
محمد روح اله یزدانی
2
,
فاضل عباس حسن الاشعه
3
1 - دانشکده مهندسی برق، واحد اصفهان (خوراسگان)، دانشگاه آزاد اسلامی، خوراسگان، اصفهان، ایران
2 - دانشکده مهندسی برق، واحد اصفهان (خوراسگان)، دانشگاه آزاد اسلامی، خوراسگان، اصفهان، ایران
3 - دانشکده مهندسی برق، دانشگاه تکنولوژی، بغداد، عراق
تاریخ دریافت : 1401/10/26
تاریخ پذیرش : 1402/02/24
تاریخ انتشار : 1402/09/01
کلید واژه:
سوئیچینگ نرم,
سلف تزویج,
اسنابر پسیو بدون تلفات,
تبدیل بسیار افزاینده,
مبدل بوست سری DC-DC,
چکیده مقاله :
مبدل DC-DC بسیار افزاینده بخش مهمی در سامانه های انرژی های تجدیدپذیر است. هرچند مبدل های بوست سری نسبت به مبدل بوست مرسوم دارای بهره بیشتری هستند، ولی میزان افزایش نسبت ولتاژ آنها کافی نیست. برای بهبود بهره ولتاژ مبدل بوست سری، می توان از سلف تزویج استفاده کرد ولی سلف نشتی سلف باعث ایجاد پرش ولتاژ سوییچ می شود و بازده به دلیل شرایط سوئیچینگ سخت زیاد نیست. برای غلبه بر این مشکلات، در این مقاله یک مبدل بسیار افزاینده پیشنهاد میشود که در آن ساختار مبدل بوست سری، سلف تزویج و اسنابر پسیو بدون اتلاف با هم تلفیق شده اند. در لحظه روشن و خاموش شدن، مبدل پیشنهادی درای شرایط سوییچینگ در جریان صفر و ولتاژ صفر است. در این مقاله، ابتدا مبدل پیشنهادی به صورت تئوری تحلیل شده و سپس طراحی و شبیه سازی آن در نرم افزار OrCAD ارائه شده است. علاوه بر این، نتایج اندازه گیری عملی برای نمونه ساخته شده مبدل پیشنهادی برای تأیید شرایط سوئیچینگ نرم و بهره بسیار افزاینده ارایه می شود.
چکیده انگلیسی:
An effective high-step-up DC-DC converter is an important section of renewable energy systems. Cascaded boost converters provide more voltage gain than single boost converters, but they are still unsuitable for high step-up voltage conversion due to gain and hard switching conditions. To improve the voltage, gain of the cascaded boost converter, a coupled inductor can be used but the leakage inductance causes a voltage. To overcome these problems, a high step-up converter is proposed in which a cascaded structure, coupled inductor, and a lossless passive snubber are utilized together. The proposed converter has zero current and zero voltage switching conditions at turn-on and off instants. First, the proposed converter is theoretically analyzed, and then its design and simulation in OrCAD software are presented. Furthermore, the experimental results of the prototype verify soft switching conditions and high step-up gain.
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