طراحی ساختار مناسب ترانسفورماتور الکترونیک قدرت بر مبنای استفاده از مبدل های چند پورته با قابلیت نصب ذخیره ساز
محورهای موضوعی : مهندسی برق و کامپیوترحمید کاوش 1 , مهدی سرادارزاده 2 *
1 - دانشكده مهندسي برق و كامپيوتر، دانشگاه صنعتی جندی شاپور دزفول، دزفول، ایران
2 - دانشكده مهندسي برق و كامپيوتر، دانشگاه صنعتی جندی شاپور دزفول، دزفول، ایران،
کلید واژه: پل فعال چندگانه, ترانسفورماتور الکترونیک قدرت, ذخیرهسازی انرژی, شیفت فاز تکی.,
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.
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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