بهبود کنترل برداری میدان‌گرا با استفاده از مدولاسیون بردار فضایی برای درایو موتور دی‌سی بدون جاروبک

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشگاه شهید بهشتی

چکیده

 مدولاسیون بردار فضایی در موتور دی سی بدون جاروبک (BLDC) با روتور مغناطیس دائم به دلیل فازهای خاموش و نیروی ضد محرکه ذوزنقه ای نسبت به موتورهای معمول متفاوت است. برای غلبه بر این مسئله، در این مقاله یک روش SVPWM برای کنترل برداری میدان‌گرا در درایو موتور BLDC ارائه شده است. تفاوت‌های اساسی در پیاده سازی این روش، در تخمین گشتاور و ارائه بردارهای فضایی ولتاژ اینورتر مشخص شده، است. به منظور کنترل موثر و مستقیم گشتاور، گشتاور برحسب نیروی ضد محرکه و جریان سه فاز محاسبه می‌شود. بر طبق خطای گشتاور بین گشتاور داده شده و گشتاور واقعی، بهترین بردار ولتاژ انتخاب می شود که عملکرد دینامیک موتور BLDC را سیستم کنترل مستقیم گشتاور به عهده دارد. در نتیجه انتظار میرود تا پاسخ دینامیکی بهتری را در برابر تغییرات بار داشته باشد.
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کلیدواژه‌ها


عنوان مقاله [English]

Field Oriented Control of BLDC Motor Drive Using Space Vector Modulation

نویسندگان [English]

  • Hossein Torkaman
  • milad bhnamfar
Shahid Beheshti University
چکیده [English]

The space vector modulation in a brushless DC motor (BLDC) with a permanent magnetic rotor is different from conventional motors due to the silent phases and trapezoidal back EMF. To overcome this problem, in this paper, an SVPWM method is proposed for field-oriented control of the BLDC motor drive. The main differences in the implementation of this method are the torque estimation and the presentation of the space vectors of the inverter voltage specified. In order to control the effective and direct torque, the torque is calculated in terms of the electromagnetic force and the three-phase current. According to the torque error between the given torque and the reference torque, the best voltage vector is selected, which performs the dynamic performance of the BLDC motor as a direct torque control system. As a result, it is expected to have a better dynamic response to load variations.
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کلیدواژه‌ها [English]

  • Field Oriented control
  • Brushless Dc motor
  • Space Vector Modulation
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