محاسبه جریان و نیرومحرکه مغناطیسی میله‌های روتور در یک ماشین القایی قفس سنجابی

نوع مقاله: پژوهشی

نویسنده

دانشگاه سمنان

چکیده

در این مقاله، روش محاسبه جریان میله‌های روتور در یک ماشین القایی قفس سنجابی و نیز نیرو محرکه مغناطیسی آن معرفی می‌شود. برای این منظور به کمک معادلات دینامیکی، الگوریتم مدل‌سازی ماشین القایی براساس مدارهای معادل دارای کوپل مغناطیسی بیان می‌شود. این مدل‌سازی به گونه‌ای شکل می گیرد که جریان لحظه‌ای سیم‌پیچی‌های استاتور و همه میله‌های روتور قابل محاسبه باشند. در ادامه رابطه تحلیلی جریان میله‌های روتور استخراج می‌گردد و سپس این رابطه برای شرایط پایدار ماشین تطبیق می‌یابد. در آخرین بخش نیز با کمک تئوری تابع سیم‌پیچی و رابطه تحلیلی بدست آمده برای جریان میله‌ها، نیرو محرکه مغناطیسی روتور محاسبه خواهدشد.

کلیدواژه‌ها


عنوان مقاله [English]

Calculation of Rotor’s Current and MMF in a Squirrel Cage Induction Machine

نویسنده [English]

  • Hamid Reza Izadfar
چکیده [English]

This paper presents a method for calculation of bar’s currents and its magneto motive force (MMF) in a squirrel cage induction machine. For this propose, at first multiple coupled circuit modeling of cage induction motor is introduced. Then with the aim of dynamic equations, an analytic expression for bar’s currents will be derived. This equation can introduce the instantaneous values of currents in all bars. At next section, this equation is simplified for the steady state operation of machine. At the end, the equation of MMF produced by rotors will be derived based on analytic bar’s equation and winding function theory.

کلیدواژه‌ها [English]

  • Current
  • Induction Machine
  • Rotor’s Bars
  • MMF
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