مهندسی مکانیک مدرس

مهندسی مکانیک مدرس

شبیه سازی الکترومغناطیسی- مکانیکی- حرارتی ترانسفورماتور هسته آمورف و مقایسه با ترانسفورماتورهای معمولی با استفاده از روش اجزاء محدود

نویسندگان
دانشکده فنی و مهندسی - دانشگاه بین المللی امام خمینی (ره) - قزوین - ایران
چکیده
از آنجایی‌که یکی از مهم ترین و پرمصرف ترین تجهیزات شبکه برق ترانسفورماتورها می باشند، بررسی عوامل مؤثر بر کاهش تلفات این تجهیزات از اهمیت ویژه ای برخوردار است. امروزه ترانسفورماتور های هسته آمورف دارای جایگاه مهمی در بازار برق هستند چون در مقایسه با ترانسفورماتورهایی با هسته ای از جنس استیل کریستالی سیلیکون حدود 60 تا 70 % تلفات بی باری را کاهش می دهند. به منظور بهبود در طراحی و همچنین صرفه‌جویی در وقت و هزینه برای تولید ترانسفورماتورهای هسته آمورف تحلیل عددی حالت بی باری همانند حالت بارداری یکی از مهم ترین فاکتورها بوده که باید مورد توجه قرار گیرد. از طرفی دما نیز یکی از فاکتورهای مهم و تأثیرگذار در عمر ترانسفورماتور است، چون افزایش دمای ترانسفورماتور باعث کاهش عمر ترانسفورماتور می شود. در این مقاله یک نمونه ترانسفورماتور 100KVA به وسیله کوپل نرم افزارهای انسیس ماکسول و انسیس فلوئنت شبیه سازی شده، تلفات بی باری و بارداری مورد بررسی قرار می‌گیرد. نتایج نشان می دهند که ترانسفورماتور هسته آمورف تلفات بی باری را در حدود 65 درصد در مقایسه با ترانسفورماتور هسته استیل کریستالی سیلیکون کاهش می دهد. همچنین تحلیل حرارتی انجام شده نشان می دهدکه ترانسفورماتور هسته آمورف در مقایسه با ترانسفورماتور هسته سیلیکون در شرایط بی باری دمای پایین‌تری دارد.
کلیدواژه‌ها

عنوان مقاله English

Electromagnetic-Mechanical-Thermal Amorphous Core Transformer Simulation Compare to Conventional Transformers using FEM

نویسندگان English

Ali Heydari
Mohammad Ali Taghikhani
Faculty of Engineering, Imam Khomeini International University, Qazvin, Iran
چکیده English

Since transformers are one of the most important and most used equipment in power network, investigating the factors which affect the loss of these equipments is of particular importance. Nowadays Amorphous metal core transformers have a significant place in today power market, since they exhibit 60-70% lower no-load losses compared to the Silicon crystalline steel core transformers. In order to enhance the design and cost and also to shorten the time to produce Amorphous metal core transformers, numerical analysis of the no-load as well as load conditions are of paramount importance and hence should be considered. On the other hand, temperature is one of the important and effective factors in transformer life, because increasing the transformer temperature leads to reduction of its rated life. In this paper, a 100 KVA unit transformer has been simulated by coupling ANSYS Maxwell and ANSYS FLUENT softwares and no-load and load losses are investigated. The results show that amorphous core transformer compared to Silicon Crystalline Steel core transformer reduce no-load losses about 65 percent. Furthermore, thermal analysis shows amorphous core transformer has lower temperature compared to the Silicon core transformer in no-load conditions.

کلیدواژه‌ها English

Amorphous Core Transformer
Silicon Core Transformer
No-load and Load losses
Electromagnetic-Mechanical-Thermal Analysis
Finite Element Method(FEM)
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