پديد آورنده :
رمضاني دوباني، ايوب
عنوان :
بررسي و مدل سازي انتقال حرارت ماشين الكتريكي سوئيچ رلكتانس با استفاده از شبيه سازي CFD
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
تبديل انرژي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك
صفحه شمار :
سيزده، ۶۶ص.: مصور، جدول، عكس(رنگي)، نمودار
استاد راهنما :
محسن دوازده امامي
توصيفگر ها :
موتور الكتريكي , ديناميك سيالات محاسباتي , سوئيچ رلكتانس , انتقال حرارت , اتلاف حرارتي
استاد داور :
احمد سوهانكار اصفهاني، محسن ثقفيان
تاريخ ورود اطلاعات :
1397/06/03
چكيده انگليسي :
Investigating and Modeling the Heat Transfer of the Electric Machine of the Reluctance Switch Using the Simulation of CFD Ayyub Ramezani Dobani ayyub ramezani@me iut ac ir June 23 2018 Department of Mechanical Engineering Isfahan University of Technology Isfahan 84156 83111 IranDegree Master of Science Language FarsiSupervisor Mohsen Davazdah Emami Assoc Prof mohsen@cc iut ac ir AbstractThermal dissipation in electrical machines causes heat generation and temperature rise in their various compo nents and these factors reduce the life of the machine Increasing the temperature in the machine can damagethe coil insulation which in turn causes unallowed thermal stresses sound noise reduction of efficiency andeven allowed tolerance changes On the other hand the thermal resistance of the engine causes reduction of thetemperature and better heat transfer in the engine Therefore the prediction of the electric motor s temperaturebehavior can help us design the cooling system of our electric machine optimally Reliable switching motors had attracted a lot of attention because of their unique properties In this project thethermal analysis of the reluctance switch electric motor is considered in a three dimensional and steady statemanner In which the air gap between the rotor and the stator is modeled with the help of computational fluiddynamics The software used in this simulation ANSYS CFX is suitable for simulating rotating objects Theobtained results are for the rotational speeds of 1000 1500 and 2000 rpm for a 12 8 reluctance switch motor The simulations illustrate that the maximum temperature for the rotational speed of 1000 rpm is equal to 343 1K or 70 1 c in the coil and for 1500 and 2000 rpm the maximum temperature in the motor s rotor are348K or 75 c and 350 4k or 77 4 c respectively This is due to the reduction of copper losses in thecoil and losses growth in the stator core and the rotor Reduction of stator and rotor core losses due to increasedfrequency and maximum magnetic flux and reduction of copper losses due to high voltage rise at high speeds Finally the engine s temperature contours that provide a precise temperature distribution across the engine arementioned as well KeywordsElectric motor Computational Fluid Dynamics reluctance switch Heat transfer Thermal loss
استاد راهنما :
محسن دوازده امامي
استاد داور :
احمد سوهانكار اصفهاني، محسن ثقفيان
