ارائه یک مبدل اینترلیود DC-DC فوق افزاینده ولتاژ با قابلیت کلیدزنی در ولتاژ صفر و استرس ولتاژ کم روی کلیدها برای کاربردهای سیستم‌های انرژی تجدیدپذیر

نوع مقاله : علمی-پژوهشی

نویسندگان

1 دکتری، گروه مهندسی برق، واحد ساری، دانشگاه آزاد اسلامی، ساری، ایران

2 استادیار، گروه مهندسی برق، واحد ساری، دانشگاه آزاد اسلامی، ساری، ایران

3 استادیار، گروه مهندسی برق، واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد، ایران

چکیده

در این مقاله یک مبدل اینترلیود DC-DC با بهره ولتاژ زیاد ارائه شده است که مبتنی بر سلف تزویج، ترانسفورماتور جاسازی شده (BIT) و کلیدزنی خازنی می‌باشد. با قرار گیری سیم پیچ‌ های ثانویه سلف تزویج بین سیم پیچ های اولیه آن و سیم پیچی اولیه BIT، بهره ولتاژ خروجی متناسب با حاصل ضرب نسبت دور سیم پیچ های سلف تزویج و BIT خواهد شد. همچنین تنش ولتاژ رو کلیدهای قدرت به مقدار قابل ملاحظه ایی کاهش یافته است که در نتیجه آن می‌توان از نیمه هادی هایی با مقاومت هدایتی کمتر استفاده نمود که سبب کاهش تلفات هدایتی و قیمت مبدل می‌شود. با استفاده از کلمپ اکتیو نه تنها کلیدزنی در ولتاژ صفر (ZVS) در لحظه‌های روشن و خاموش شدن برای کلیدهای قدرت مهیا می‌شود بلکه انرژی سلف های نشتی نیز به صورت موثری بازیابی خواهد شد. همچنین به دلیل کنترل شدن شیب جریان کاهشی دیودها توسط سلف‌های نشتی، این نیمه هادی‌ها در جریان صفر (ZCS) خاموش می‌ شوند که در نتیجه آن مشکلات بازیابی معکوس حل شده و عملکرد مبدل بهبود می‌یابد. در پایان، جهت بررسی عملکرد مبدل یک نمونه آزمایشگاهی 600 وات، 22 به 380 ولتی با فرکانس کلیدزنی 100کیلوهرتز ساخته می‌شود.

کلیدواژه‌ها

عنوان مقاله [English]

Proposition of an Ultra-High Voltage Gain Interleaved DC-DC Converter with ZVS Performance and Low Voltage Stresses Across Switches for Renewable Energy Systems Applications

نویسندگان [English]

  • َA. Bagherian 1
  • T. Nouri 2
  • M. Shaneh 3
  • M. Radmehr 2
1 Department of Electrical Engineering, Sari Branch, Islamic Azad University, Sari, Iran.
2 Department of Electrical Engineering, Sari Branch, Islamic Azad University, Sari, Iran.
3 Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran.
چکیده [English]

The proposed converter is an interleaved ultra-large gain converter based on coupled-inductor (CI), built-in transformer (BIT) and switched capacitor (SC). The main novelty of the proposed converter is that the voltage gain can be achieved in proportionate to the multiplication of the turn ratios of the CIs and BIT that increase the voltage gain of the proposed converter. Also, through this topology, the voltage stresses across the power switches are effectively reduced and as a result MOSFETs with low ON-state resistances can be implemented that reduces the cost and conduction losses. Implementation of active clamp technique not only facilitates zero voltage switching (ZVS) turn-ON and turn-OFF for all switches, but also recycles the energy of the leakage inductances. Moreover, due to the presence of the leakage inductances, all of the diodes are turned OFF with zero current switching (ZCS) performance and the associated reverse recovery problem is solved, effectively. Through extensive comparison discussion, it is concluded that the proposed converter with low number of components outperforms previously presented ones in the terms of the voltage gain and voltage stresses across switches. Finally, the performance of the proposed converter is validated through developing a 100kHz 600W 22-380V prototype.

کلیدواژه‌ها [English]

  • Ultra-high step-up
  • interleaved converter
  • coupled inducter (CI)
  • built-in transformer (BIT)
  • zero voltage switching
  • zero current switching

مراجع

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