روش SVPWM تحمل خطا برای خطاهای سوئیچ‌باز چندگانه در مبدل توربین بادی شش‌فاز

روش‌های هوشمند در صنعت برق

مقاله 5، دوره 14، شماره 54، شهریور 1402، صفحه 75-90   

نوع مقاله: مقاله پژوهشی

نویسندگان

روح اله بلبل نیا^* ؛ کریم عباس زاده

دانشکده مهندسی برق- دانشگاه صنعتی خواجه نصیرالدین طوسی، تهران، ایران

چکیده

با توجه به افزایش استفاده از انرژی باد و تاثیر قابل ‌توجه آن بر شبکه قدرت، تحمل خطا در توربین بادی برای افزایش قابلیت اطمینان و سطح در دسترس بودن آن ضروری است. در این مقاله، یک روش جدید تحمل خطای کلید‌ باز چندگانه برای مبدل AC-DC شش‌فاز، به‌عنوان آسیب‌پذیرترین قسمت سیستم توربین بادی ارایه شده است. روش پیشنهادی تحمل خطا از حالت افزونگی بردارهای فضایی مبدل شش‌فاز در مدولاسیون پهنای پالس بردار فضایی (SVPWM) استفاده نموده است و با تغییر سیگنال‌های کلیدزنی در ناحیه‌های خطادار، بردار فضایی دیگری را جایگزین بردار فضایی مطلوب نموده تا از ایجاد بردار فضایی نامطلوب براثر خطا کلید باز جلوگیری شود. مزیت اصلی روش پیشنهادی این است که بدون افزودن پایه، کلید یا تریاک (TRIAC)، به مدار مبدل و همچنین بدون نیاز به محاسبات پیچیده، خطاهای کلید باز مبدل را تحمل نموده و مقدار اضافه جریان و مقدار اعوجاج هارمونیک کل (THD) ناشی از این خطاها را در فازهای سالم و خطادار کاهش داده است. در نهایت روش پیشنهادی تحمل خطا با شبیه‌سازی در محیط سیمولینک نرم‌افزار متلب ارزیابی ‌شده و نتایج حاصل از این شبیه‌سازی جهت تایید اثر بخشی آن ارائه ‌شده است.

کلیدواژه‌ها

تحمل خطا؛ توربین بادی؛ خطای کلید ‌باز چندگانه؛ مبدل شش‌ فاز؛ مدولاسیون پهنای پالس بردار فضایی

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