منوی کاربری
  • پشتیبانی: ۴۲۲۷۳۷۸۱ - ۰۴۱
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دانلود رایگان مقاله محاسبه ظرفیت القاگری ماشین AC بر اساس تئوری تابع سیم پیچی

عنوان فارسی
محاسبه مستقیم ظرفیت القاگری ماشین AC بر اساس تئوری تابع سیم پیچی
عنوان انگلیسی
Direct computation of ac machine inductances based on winding function theory
صفحات مقاله فارسی
0
صفحات مقاله انگلیسی
4
سال انتشار
2009
فرمت مقاله انگلیسی
PDF
نشریه
الزویر - Elsevier
کد محصول
E2493
دانشگاه
دانشکده مهندسی برق، دانشگاه نیجریه، نیجریه
رشته های مرتبط با این مقاله
مهندسی برق
کلمات کلیدی
تابع سیم پیچی، القاگری، ماشین آلات AC، شکافها، تابع هواشکاف معکوس، همزمان، مقاومت مغناطيسى ماشین
گرایش های مرتبط با این مقاله
برق الکترونیک
مجله
تبدیل انرژی و مدیریت - Energy Conversion and Management
۰.۰ (بدون امتیاز)
امتیاز دهید
چکیده

abstract

 

A numerical procedure for computing the inductances of ac machines is described. The procedure does not require that explicit expressions for airgap or winding functions be obtained therefore complicated integrations are avoided. The effects of stator slots are included in a manner in which all the harmonics are taken into account. The inductances obtained are subsequently transformed to d-q-0 reference frame and the results are seen to compare favorably with measurements. Significant differences exist in the computed inductances especially in the d-axis. Cross-coupling effects between the d-axis and q-axis inductances which are generally ignored when approximate expressions are used are also observed.

نتیجه گیری

4. Conclusions

 

Significant differences exist between the two computed values especially in the d-axis inductances because the effect of slots is maximal in that axis (see Fig. 1b). The effect of slots reduces the quantity of iron (especially in the d-axis) and thus the inductances computed using the actual model are lower than those obtained from the sinusoidal model but it approximates the measured value. The rest of the d-axis inductances are distributed amongst the cross-couplings as can be seen in Fig. 3. This difference is much lower in the q-axis. It is seen from the results that the average values of d-q-0 inductances calculated are very close to the experimental ones. High values of cross coupling effects exist which are usually not observed when approximate sinusoidal expressions are used. This is because all spurious harmonics are included in the calculations by using the actual geometry of the airgap and winding layout. The outlined procedure can be applied to other ac machines having a simple rotor configuration.


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