دانلود مقاله ISI انگلیسی شماره 146243
ترجمه فارسی عنوان مقاله

بررسی عددی پدیده گرما جریان هوا در موتورهای القایی با ظرفیت بالا

عنوان انگلیسی
Numerical investigation of the air-gap flow heating phenomena in large-capacity induction motors
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
146243 2017 7 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : International Journal of Heat and Mass Transfer, Volume 110, July 2017, Pages 746-752

ترجمه کلمات کلیدی
موتور، موتور با ظرفیت بالا فاصله هوا، سیم پیچی، مدل سازی حرارتی،
کلمات کلیدی انگلیسی
Motor; Large-capacity motor; Air gap; Winding; Thermal modeling;
پیش نمایش مقاله
پیش نمایش مقاله  بررسی عددی پدیده گرما جریان هوا در موتورهای القایی با ظرفیت بالا

The thermal characteristics of a large-capacity induction motor were investigated with an air-gap flow temperature that is higher than the stator and winding temperatures. Air-gap flow heating phenomena were defined and classified into three states: under-heating, over-heating, and super-heating. A non-dimensional temperature was suggested to predict the corresponding air-gap flow heating state of a motor. Based on the non-dimensional temperature, the over-heating state is inevitable for a motor with a capacity above 50 kW, and the super-heating state is inevitable for a motor with a capacity above 100 kW. Furthermore, the effects of the over-heating and super-heating states of the air-gap flow on the stator and windings were investigated. Under these two states, the cooling of the stator by the air-gap flow was diminished. Additionally, the winding temperature increased because of the discharged air-gap flow.