طراحی درایو موتور بدون سنسور BLDC با استفاده از روش کنترل مستقیم گشتاور

محورهای موضوعی : طراحی و کنترل ماشین الکتریکی

غلامرضا لاله زار ¹ , امیر موحدی ²

1 - کارشناس ارشد /دانشگاه صنعتی مالک اشتر
2 - دانشجوی دکتری/دانشگاه کاشان

تاریخ دریافت : 1392/03/11 تاریخ پذیرش : 1392/06/31 تاریخ انتشار : 1392/08/10

کلید واژه: موتور BLDC, درایو, بدون سنسور, روش DTC,

چکیده مقاله :

در این مقاله برای تخمین وضعیت روتور در درایو موتور بدون سنسور BLDC از روش نسبت توابع شار خط به خط، استفاده شده است. این روش، نسبت به سایر روش‌هایی که برای تخمین موقعیت روتور مورد ارزیابی قرار می‌گیرند، حجم نرم‌افزار و سخت‌افزار کمی داشته و لذا پیاده سازی آن آسان و هزینه ساخت نیز کمتر است. همچنین این روش در بازه وسیعی از سرعت کارایی مناسبی دارد و تخمین وضعیت روتور مستقل از سرعت و فرکانس روتور می‌باشد. همچنین در این مقاله از روش کنترل مستقیم گشتاور (DTC) برای طراحی درایو موتور بدون سنسور BLDC استفاده شده است. DTC یکی از روش‌های بسیار نو و کارآمد در کنترل ماشین‌های الکتریکی می‌باشد. سرعت بالا در پاسخ به تغییرات گشتاور، سادگی اجرا، عدم وابستگی به پارامترهای ماشین و نیاز به محاسبات کم از مزایای این روش می‌باشد. در انتهای این مقاله نتایج شبیه‌سازی با استفاده از نرم‌افزار Matlab نشان دهنده عملکرد خوب موتور بدون سنسور BLDCبا روش DTC می‌باشد

چکیده انگلیسی:

In this paper, to estimate the rotor position in sensorless BLDC motor drive, the method of the ratio functions line by line flux is used. This method, compared to other methods which are evaluated to estimate the rotor position, has low software volume and therefore, its implementation is easy and also manufacturing cost is less. Also this method has an appropriate efficiency in a wide range of speed and estimate the rotor position is independent of speed and rotor frequency. Also in this paper, the method Direct Torque Control (DTC) is used to design sensorless BLDC motor drive. DTC method is one of the most innovative and efficient methods in control of the electrical machine. High speed response to changes in torque, simplicity of implementation, independence to machine parameters and needs of less computation are the advantages of this method. At the end of this paper, simulation results by using software MATLAB shows good performance of sensorless BLDC motors with DTC method compared to the switching function method.

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