کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
646004 1457152 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Heat-transfer improvements in an axial-flux permanent-magnet synchronous machine
ترجمه فارسی عنوان
بهبود انتقال حرارت در یک ماشین همگام ثابت داکت مغناطیسی محوری
کلمات کلیدی
دستگاه جریان شیب، آهن ربا دائمی از دست دادن انتقال گرما
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی


• Cooling of axial flux permanent magnet generator was studied.
• Copper bars was introduced to transfer heat from the stator teeth to liquid cooling pool attached to the end shields.
• Addition to copper bar the performance of aluminium-oxide potting material was studied.
• The calculated and measured values were in good agreement.
• The cooling was improved significantly.

Axial-flux machines tend to have cooling difficulties since it is difficult to arrange continuous heat path between the stator stack and the frame. One important reason for this is that no shrink fitting of the stator is possible in an axial-flux machine. Using of liquid-cooled end shields does not alone solve this issue. Cooling of the rotor and the end windings may also be difficult at least in case of two-stator-single-rotor construction where air circulation in the rotor and in the end-winding areas may be difficult to arrange. If the rotor has significant losses air circulation via the rotor and behind the stator yokes should be arranged which, again, weakens the stator cooling. In this paper we study a novel way of using copper bars as extra heat transfer paths between the stator teeth and liquid cooling pools in the end shields. After this the end windings still suffer of low thermal conductivity and means for improving this by high-heat-conductance material was also studied. The design principle of each cooling system is presented in details. Thermal models based on Computational Fluid Dynamics (CFD) are used to analyse the temperature distribution in the machine. Measurement results are provided from different versions of the machine. The results show that significant improvements in the cooling can be gained by these steps.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 76, 5 February 2015, Pages 245–251
نویسندگان
, , , , ,