ارائه مدلی برای ژنراتور تغذیه دوگانه در توربین بادی بر اساس روابط تحلیلی دقیق هارمونیکی و نوسان
محورهای موضوعی : مهندسی برق و کامپیوتر
مجید نیری‌پور
1
(دانشگاه صنعتی شیراز)
محمدمهدی منصوری
2
(دانشگاه صنعتی شیراز)
کلید واژه: تحلیل هارمونیکی مدل هارمونیکی ژنراتور تغذیه دوگانه,
چکیده مقاله :
در شرایط عملکرد عادی یا خطای ژنراتورهای القایی با تغذیه دوگانه، مؤلفه‌های فرکانسی مختلفی در هر یک از سیم‌پیچ‌های استاتور و روتور یا در بخش مکانیکی می‌تواند ایجاد گردند که قابل انتقال به طرف‌های دیگر هستند و می‌توانند مؤلفه‌های فرکانسی دیگری ایجاد کنند. در این مقاله ابتدا روابط تحلیلی دقیقی برای این مؤلفه‌های فرکانسی و انتقال آنها به طرف‌های دیگر بر حسب دامنه و فاز مؤلفه‌های فرکانسی ارائه گردیده است که صورت کامل‌تری از روابط ارائه‌شده در آخرین مقالات در این زمینه است. سپس مدلی برای ژنراتور تغذیه دوگانه ارائه شده که با دقت خوبی می‌تواند مؤلفه‌های فرکانسی را در بخش‌های الکتریکی و مکانیکی ژنراتور محاسبه و مدل‌سازی نماید. در انتها صحت و دقت روابط و مدل ارائه‌شده با مطالعات موردی صحت‌سنجی شده است.
This paper presents a new exact formulation which models all harmonics in Double Fed Induction Generator (DFIG). In this methodology, the harmonics which originate from rotor side converter, stator side and mechanical part are analyzed and their interactions are considered and a new model is extracted based on frequency components in electrical and mechanical parts. The proposed method expands previous analytical approach and phase angle/amplitude of frequency components take to be account. Since this model is derived from time domain relations between frequency components, it can be used in normal and faulty conditions. The proposed model is evaluated by some case study in MATLAB/SIMULINK software.
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