طراحی و ساخت یکسوساز کموتاسیون خط جریان بالا بر اساس تریستورهای موازی
محورهای موضوعی : مهندسی برق و کامپیوترمهدی شاه پرستی 1 , محمد فرزي 2 , منصور عارفیان 3 , روزبه اسد 4 , مهدی شرعی‌پور 5
1 - دانشگاه آزاد اسلامی واحد تهران شرق
2 - پژوهشكده برق جهاد دانشگاهي
3 - پژوهشکده برق جهاددانشگاهی
4 - دانشگاه علم و صنعت ايران
5 - جهاد دانشگاهي واحد علم و صنعت
کلید واژه: یکسوساز تریستوری جریان بالاولو تریستوریموازی‌سازی تریستورها,
چکیده مقاله :
این مقاله روند طراحی و ساخت یک یکسوساز جریان بالا از نوع کموتاسیون خط را ارائه می‌کند که در آن از شش ولو جریان بالا بهره گرفته شده و هر ولو از طریق موازی‌سازی چهارهای تریستوری موازی ساخته شده است. طراحی ساختار فیزیکی، چینش باس‌بارها و چیدمان تریستورهای موازی با استفاده از یک تکنیک ابتکاری چنان انجام شده که جریان به صورت مساوی بین آنها جاری شود. علاوه بر تمهیدات طراحی سخت‌افزاری و استفاده از روش‌های مرسوم در تحریک هم‌زمان و دقیق تریستورها، برای اطمینان از تقسیم جریان مساوی، یک تکنیک کنترلی جدید متکی بر اندازه‌گیری دمای هر یک از تریستورها و تصمیم‌گیری بر اساس آن، اقدام به آتش‌کردن آنها می‌نماید. در نهایت نتایج آزمایشگاهی یک یکسوساز نمونه 170 ولتی- 4000 آمپری جهت تأیید طراحی‌ها ارائه شده است.
This paper presents the process of designing and manufacturing a high-current line-commutated rectifier, which consists of six high current valves. Every valve is constructed through the parallelization of the four thyristors. The design of the physical structure, the placement of busbars, and the arrangement of parallel thyristors are made using an innovative technique so that the current flows equally between them. To ensure equal flow distribution, in addition to the design of hardware structure and the use of suitable methods for simultaneous and accurate triggering of parallel thyristors, a new control technique based on the temperature measurement of each thyristor is proposed. Finally, the experimental results of a 170V, 4000A rectifier are presented to verify the proposed hardware design and control method.
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