مبدل DC-DC فوق افزاینده با پایداری بهبود‌یافته و هزینه پایین برای ریز شبکه های تغذیه شونده با انرژی خورشیدی

نوع مقاله : علمی-پژوهشی

نویسندگان

1 کارشناسی ارشد، دانشکده مهندسی برق و کامپیوتر، دانشگاه تبریز، تبریز، ایران

2 دانشیار، دانشکده مهندسی برق و کامپیوتر، دانشگاه تبریز، تبریز، ایران

3 دانشجوی کارشناسی ارشد، دانشکده مهندسی برق و کامپیوتر، دانشگاه تبریز، تبریز، ایران

چکیده

در ریز شبکههای DC تغذیه شونده با پنلهای خورشیدی، استفاده از یک مبدل DC-DC افزاینده با بهره ولتاژ و پایداری بالا ضروری می باشد. در این مقاله یک مبدل DC-DC فوق افزاینده با ترکیب ساختارهای افزاینده ولتاژ، سلول خازن کلید زنی شده بهبود یافته و سلف تزویج سه سیم پیج ارائه شده است. مبدل پیشنهادی علاوه بر بهره ولتاژ فوق بالا، دارای تنش ولتاژ پایین روی عناصر نیمه هادی، جریان ورودی پیوسته با ریپل کم، هزینه پایین، چگالی توان بالا و بازده بالا می باشد. همچنین استفاده از روش کنترلی جاگذاری قطب و جاگذاری مناسب قطبهای سیستم باعث بهبود پایداری مبدل پیشنهادی شده است. در بخشهای مختلف مقاله مبدل پیشنهادی مورد تجزیه و تحلیل قرار گرفته و روابط مربوطه استخراج شده و عناصر آن طراحی شده اند. همچنین با انجام یک مقایسه بر مبنای ویژگیهای مورد نیاز برای ریز شبکههای DC و سیستمهای انرژی خروشیدی، مزایای مبدل پیشنهادی مورد بررسی قرار گرفته است. در نهایت یک نمونه آزمایشگاهی در محدوده توان 200 وات برای اعتبار ستجی نتایج بدست آمده از تحلیلها ایجاد و مورد آزمایش قرار گرفته و نتایج آن ارائه شده است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

High-Stability and Cost-effective Ultra High Step-Up DC-DC Converter for Solar-Powered DC Microgrids

نویسندگان [English]

  • Hamed Abdi 1
  • Naghi Rostami 2
  • Ali nadermohammadi 3
1 Department of Electrical and Computer Engineering, Tabriz University, Tabriz, Iran.
2 Department of Electrical and Computer Engineering, Tabriz University, Tabriz, Iran.
3 Department of Electrical and Computer Engineering, Tabriz University, Tabriz, Iran.
چکیده [English]

In solar-powered DC microgrids, utilization of a high-voltage-gain and stable DC-DC converter is essential. This paper proposes an ultra-high step-up DC-DC converter by combining voltage-boosting structures, an improved switched-capacitor (SC) cell, and a three-winding coupled inductor. The proposed converter not only achieves ultra-high voltage gain but also features low voltage stress on semiconductor elements, continuous input current with minimal ripple, low cost, high power density, common ground between input and output, and high efficiency. Additionally, the application of the pole placement control strategy and the appropriate positioning of system poles enhance the converter’s stability. A detailed analysis of the proposed converter is provided, covering its operational principles, mathematical derivations, and element design. A comparative evaluation is conducted based on key performance criteria for DC microgrids and solar energy systems, demonstrating the advantages of the proposed topology. Finally, a 200 W experimental prototype is developed to validate the theoretical findings, and the corresponding results are presented.

کلیدواژه‌ها [English]

  • Ultra-high step-up DC-DC converters
  • DC microgrids
  • photovoltaic energy
  • common ground
  • cost-effective converters

مراجع

 
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