طراحی ساختار مناسب ترانسفورماتور الکترونیک قدرت بر مبنای استفاده از مبدل های چند پورته با قابلیت نصب ذخیره ساز

چکیده مقاله :

ترانسفورماتور الکترونیک قدرت (PET) به­عنوان جایگزینی مناسب برای ترانسفورماتورهای معمول فرکانس خط (LFT) در سیستم­های قدرت مدرن در نظر گرفته می­شود. همچنین، در کاربردهای با توان و ولتاژ بالا، ساختارهای مدولار مانند پل H آبشاری (CHB)، به عنوان راه­حل‌های مناسب برای طراحی PET شناخته می‌شوند. با این حال، در توپولوژی­ها موجود معرفی­شده، توان­های اعوجاجی فرکانس پایین در خازن­های لینک DC و عملکرد نامناسب در هنگام خطا می­تواند از معضلات این توپولوژی­ها باشد که معمولاً بر اساس مبدل پل فعال دوگانه (DAB) طراحی می­شوند. به منظور حل این مسئله، این مقاله چند ساختار مبتنی بر مبدل­های چندپورته پیشنهاد می‌کند که با پیکربندی مناسب می­توانند معضلات مطرح­شده را رفع کنند. استفاده از چند مبدل پل فعال پنج‌گانه و ابرخازن و ارائه یک روش کنترل مناسب جهت کنترل توان بین پورت‌ها به طراحی جدید یک ترانسفورماتور الکترونیک قدرت با دینامیک بالا و قابلیت عملکرد در هنگام خطا در MV و LV منجر خواهد شد. طراحی مفهومی و مطالعات شبیه­سازی انجام­شده با استفاده از Matlab/Simulink اثربخشی و عملکرد مناسب توپولوژی­های پیشنهادی را نشان می­دهد.

چکیده انگلیسی :

Power Electronic Transformers (PETs) have emerged as promising alternatives to conventional Line Frequency Transformers (LFTs) in modern power systems. For high-power and high-voltage applications, modular configurations such as Cascaded H-Bridge (CHB) structures are widely recognized as effective PET design solutions. However, existing PET topologies, most commonly based on Dual Active Bridge (DAB) converters, suffer from significant drawbacks, including low-frequency distortion power in DC-link capacitors and degraded performance under fault conditions.

To overcome these limitations, this paper introduces several multi-port converter-based PET architectures. By employing multiple five-port active bridge converters in conjunction with supercapacitors and an advanced control strategy for inter-port power management, the proposed PET achieves enhanced dynamic performance and fault-tolerant operation at both medium-voltage (MV) and low-voltage (LV) levels. Conceptual design and comprehensive simulation studies conducted in Matlab/Simulink confirm the effectiveness and robustness of the proposed topologies.

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