مدل‌سازی دینامیکی چرخ‌دنده مغناطیسی هم‌محور بر مبنای مدار معادل مغناطیسی با استفاده از روش تحلیل گره

نوع مقاله : علمی-پژوهشی

نویسندگان

1 دانشکده فنی و مهندسی - دانشگاه آزاد اسلامی واحد شهرقدس

2 دانشکده فنی و مهندسی- دانشگاه آزاد اسلامی واحد آشتیان

3 دانشکده فنی و مهندسی - دانشگاه آزاد اسلامی واحد تهران مرکزی

چکیده

چرخ­دنده­های مغناطیسی در مقایسه با نوع مکانیکی آن دارای ویژگی‌های زیادی از قبیل قابلیت اطمینان بالا، لرزش و نویز صوتی کمتر، محافظت در مقابل اضافه بار، مجزابودن شفت ورودی و خروجی از یک‌دیگر و تعمیر و نگهداری کمتر می‌باشند. داشتن یک مدل بر مبنای مدار معادل مغناطیسی در مقایسه با روش المان محدود، می‌تواند زمان مورد نیاز را در مراحل اولیه فرایند طراحی کاهش دهد. در این مقاله مدل‌سازی دو بعدی یک چرخ‌دنده مغناطیسی هم‌محور بر مبنای مدار معادل مغناطیسی و با استفاده از روش تحلیل گره ارائه شده‌است. با استفاده از مدل ارائه‌شده، ابتدا پتانسیل مغناطیسی گره‌های مدار به‌دست آمده‌است و سپس  با استفاده از آن توزیع میدان‌های مغناطیسی، شارها و گشتاور روتور درونی و بیرونی در بخش‌های مختلف چرخ‌دنده تعیین شده‌است. مدل دینامیکی چرخ‌دنده نیز به کمک مدل ارائه‌شده استخراج شده‌است و  مشخصه گشتاور-زوایه، ریپل گشتاور و گشتاور شکست چرخ‌دنده به‌دست آمده‌است. علاوه بر این، تاثیر تغییرات گشتاور بار برروی دینامیک چرخ‌دنده مورد ارزیابی قرار گرفته‌است. درنهایت به‌منظور اعتبارسنجی مدل پیشنهادی، نتایج به‌دست‌آمده با نتایج روش تحلیل المان محدود مقایسه شده‌اند.

کلیدواژه‌ها

عنوان مقاله [English]

Dynamic modeling of coaxial magnetic gears based on magnetic equivalent circuit using nodal analysis method

نویسندگان [English]

  • A. Khodakarami 1
  • H. Feshki Farahani 2
  • M. Hosseini Aliabadi 3
1 Faculty of Electrical Engineering, Islamic Azad University of Shahr-e-Qods, Shahr-e-Qods, Iran
2 Department of Electrical Engineering, Islamic Azad University Ashtian, Ashtian, Iran
3 Department of Electrical Engineering, Islamic Azad University of Central Tehran Branch, Tehran, Iran
چکیده [English]

Magnetic gears in comparison with mechanical type have a lot of features like high reliability, low vibration and acoustic noise, overload protection, input and output shafts insulation, and less repair and maintenance requirements. Having a semi-analytic model based on the magnetic equivalent circuit (MEC) compared with the finite element method can reduce the time needed in the preliminary stages of the design process. In this paper, a two-dimensional modeling of a coaxial magnetic gearbox based on a MEC is presented using the nodal analysis method. Using the proposed model, the magnetic potentials of the circuit nodes are first obtained and the magnetic field distribution, fluxes, inner and outer rotor torque are determined in different parts of the gear. In this modeling, a dynamical model of the gear is presented. Using this model, the torque-angle characteristic, torque ripple and pullout torque of the gear are extracted. In addition, the effect of the load torque variation on the MG dynamics is evaluated. Finally, in order to validate the proposed model, the model results are compared with the finite element analysis.

کلیدواژه‌ها [English]

  • Coaxial magnetic gear
  • magnetic equivalent circuit
  • inner and outer rotors
  • pole pieces
  • pullout torque

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