8000

7435

كارشناسي ارشد

قدرت

اصفهان: دانشگاه صنعتي اصفهان، دانشكده برق و كامپيوتر

1391

هشت،89ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

مهدي معلم

احمدرضا تابش

9/7/92

مهندسي برق و كامپيوتر

ID7435

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Modeling and design of Axial Flux Permanent Magnet Motor for Modern Elevator Drive system Ali Akbar Alipour a alipour@ec iut ac ir Date of Submission Department of Electrical and Computer Engineering IsfahanUniversity of Technology Isfahan 84156 83111 Iran Degree M Sc Language Persian Supervisor Dr Mehdi Moallem moallem@cc iut ac ir Abstract Expansion of cities and the increasing number of high rise buildings has led use of modern elevators is unavoidable Elevators need motors with low speed high torque and low torque ripple Induction motors can replace with permanent magnet motors without gear box By using axial flux motor we can install motor is hoist way and motor room is removed or in high power volume of motor room is minimized in this thesis axial flux machine with double side and internal rotor configuration is proposed for elevator application The accurate performance of axial flux machines can be evaluated by three dimensional finite element method however this method is very time consuming Especially in design optimization process we need an accurate method which is less time consuming An accurate and high speed method is proposed by using quasi 3 D method and Schwarz Christoffel transformation for modeling axial flux permanent magnet machines Then by using complex relative air gap permeance and field reconstruction methods the speed of method is improved Normal and tangential component of magnetic field is obtained Then cogging torque back electromotive force and electromagnetic torque are calculated The large diameter stator disc with traditional overlapping winding lead to increasing winding length and copper loss In low speed machines among all losses the copper lossesare often dominating Hence non overlapping winding axial flux permanent magnet motors with suitable combinations of slots and poles is proposed that end windings and cogging torque is minimized Then axial flux motor is designed for elevator with nominal capacity equal to 21persons In this thesis the accuracy of the developed method is verified using 3 D finite element method Keywords Axial flux permanent magnet machine Schwarz Christoffel mapping elevator cogging torque PDF created with pdfFactory trial version www pdffactory com

مهدي معلم

احمدرضا تابش