محاسبه چگالی شار مغناطیسی بی‌باری در ماشین شارمحور آهن‌ربای دایم با استفاده از روش تحلیلی شبه سه‌بعدی
محورهای موضوعی : مهندسی برق و کامپیوترمحمدرضا عليزاده پهلواني 1 * , یوسف شهبازی آیت 2 , ابوالفضل واحدی 3
1 - دانشگاه مالک اشتر
2 - دانشگاه صنعتی مالک اشتر
3 - دانشگاه علم و صنعت ايران
کلید واژه: ماشین‌های شارمحور آهن‌ربای دایم میدان‌های مغناطیسی روش تحلیلی معادلات ماکسول,
چکیده مقاله :
در این مقاله یک روش تحلیلی شبه سه‌بعدی برای محاسبه چگالی شار مغناطیسی بی‌باری ماشین شارمحور آهن‌ربای دایم ارائه شده است. این روش به صورت ترکیبی از حل تحلیلی دوبعدی میدان مغناطیسی و استفاده از یک تابع اصلاح برای لحاظ اثر شعاعی ماشین بر روی توزیع میدان مغناطیسی می‌باشد. تابع اصلاح به صورت تحلیلی و با استفاده از پرمانس‌های فاصله هوایی و پرمانس‌های نشتی به دست آمده است. این روش تحلیلی دارای زمان محاسباتی بسیار کمتری نسبت به نرم‌افزارهای المان محدود می‌باشد و از این رو می‌تواند در طراحی و بهینه‌سازی ماشین‌های الکتریکی مورد استفاده قرار گیرد. در نهایت اعتبارسنجی نتایج روش تحلیلی ارائه‌شده با استفاده از تحلیل افزار المان محدود انجام شده است.
This paper presents a semi-3D analytical method for calculation of the no-load magnetic flux density in an axial flux permanent-magnet machine. This method is based on a 2-D analytical solution of magnetic field and using modulation function for considering machine’s radial effect on magnetic field distribution. Modulation function is obtained analytical and by use of airgap and leakage permeances. This analytical method takes much less computational time than 3-D finite element method (FEM) does, and is, thus, useful for designing and optimization purposes. Finally, the accuracy of the presented analytical model is validated by comparing its results to corresponding finite-element analysis.
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