بهبود دقت مدل سوئیچ در مدل سازی سیگنال کوچک مبدل پل فعال دوگانه

نوع مقاله : مقاله برق

نویسندگان

دانشکده مهندسی برق و کامپیوتر، دانشگاه سمنان، سمنان، ایران

چکیده

در این مقاله، یک مدل میانگین کاهش مرتبه‌یافته (RAVM) برای یک مبدل پل فعال دوگانه (DAB) ارائه می‌شود. این مدل می‌تواند برای تمام روش‌های مدولاسیون، نظیر مدولاسیون شیفت‌فاز منفرد (SPS)، مدولاسیون شیفت‌فاز گسترش‌یافته (EPS)، مدولاسیون شیفت‌فاز دوگانه (DPS) و مدولاسیون شیفت‌فاز سه‌گانه (TPS) بکار برده‌ شود. این مدل پیشنهادی، تلفات هدایتی، تلفات سلف، تلفات ترانسفورماتور و تلفات کلیدزنی به همراه فیلترهای ورودی/خروجی را به منظور بهبود دقت مدل‌سازی در نظر می‌گیرد. این مقاله با استفاده از یک مقاومت مجازی معادل برای تلفات کلیدزنی به مدل‌سازی سیگنال بزرگ و سیگنال کوچک مبدل پل فعال دوگانه با مدولاسیون شیفت‌فاز سه‌گانه می‌پردازد. استفاده از این مقاومت مجازی منجر به بهبود دقت مدل‌سازی و تخمین بهتر بازدهی و تلفات مبدل بخصوص در فرکانس‌های کلیدزنی بالا می‌گردد. مدل پیشنهادی با موفقیت در نرم‌افزار PLECS پیاده سازی شده و سپس تحلیل‌های سیگنال بزرگ و سیگنال کوچک انجام شده است. مقایسه نتایج شبیه‌سازی در شرایط کاری مختلف دقت مناسب مدل پیشنهادی را در دنبال‌کردن رفتار مبدل DAB نسبت به سایر روش‌ها بدون در نظر گرفتن تمام المان‌های تأثیرگذار بر عملکرد مبدل را نشان می‌دهد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Improved Switch Model Accuracy in Dual Active Bridge Converter Small Signal Modeling

نویسندگان [English]

  • Seyed Omid Golpayegani
  • Mostafa Jazaeri
  • Naser Eskandarian
Faculty of Electrical and Computer Engineering, Semnan University, Semnan, Iran
چکیده [English]

In this paper, a new reduced-order average model (RAVM) for a DAB converter is presented. The model can be applied to all modulation techniques, such as Single-Phase-Shift (SPS) modulation, Extended-Phase-Shift (EPS) modulation, Dual-Phase-Shift (DPS) modulation and Triple-Phase-Shift (TPS) modulation. In the proposed model, conduction losses, inductor losses, transformer losses, switching losses with input/output filters are considered to improve the accuracy of modeling. This article employs a virtual resistance for switching power losses to model the large and small signals of the dual active bridge converter with triple-phase shift modulation. Using this virtual resistance enhances the accuracy of modeling and better estimating converter efficiency and losses, especially at high switching frequencies. The introduced model is successfully implemented in PLECS software and then large and small signal analyses are curried out. Comparison of simulation results under different operating conditions show a suitable accuracy of the proposed model in tracking the behavior of the DAB converter compared to other methods, without considering all the significant elements affecting the converter's performance.

کلیدواژه‌ها [English]

  • Reduced-Order Average Value Model (RAVM)
  • Dual Active Bridge (DAB) converter
  • Triple-Phase-Shift (TPS) modulation
  • Small-Signal mModeling
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