طراحی و ساخت درایو موتور جریان مستقیم بدون جاروبک با استفاده از اینورتر منبع جریان بر مبنای مدولاسیون بردار فضایی
محورهای موضوعی : مهندسی برق و کامپیوتر
سعید پاک‌ساز
1
,
ابوالفضل حلوایی نیاسر
2
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1 - دانشگاه کاشان
2 - مهندسی برق و کامپیوتر
کلید واژه: موتور جریان مستقیم بدون جاروبک (BLDC یا براشلس)اینورتر منبع جریانمدولاسیون بردار فضایی,
چکیده مقاله :
استفاده از موتورهای جریان مستقیم بدون جاروبک (BLDC) به دلایل متعددی امروزه مورد توجه صنعت قرار گرفته است. این موتورها عموماً از طریق اینورترهای منبع ولتاژ (VSI) تغذیه می‌شوند که این اینورترها دارای ساختاری بسیار ساده هستند اما مشکلاتی چون احتمال آسیب‌دیدن سوئیچ‌ها بر اثر اتصال کوتاه ناخواسته در آنها محتمل است. همچنین لزوم به کارگیری خنک‌ساز قوی و نیاز به استفاده از خازن بزرگ در لینک DC از دیگر مسایل این اینورترهاست. استفاده از اینورترهای منبع جریان (CSI) از راه‌های کاهش این مشکلات در درایو موتورهای BLDC بر مبنای VSI است. در این مقاله به منظور کاهش تلفات کلیدزنی (سوئیچینگ)، حداقل‌نمودن ضربان‌های جریان و گشتاور و افزایش قابلیت اطمینان درایو از روش مدولاسیون پهنای پالس بردار فضایی (SVM) در درایو موتور BLDC بر مبنای CSI استفاده می‌گردد. درایو موتور طراحی‌شده در هر محیط نرم‌افزاری Proteus، مدل‌سازی شده و رفتار موتور در سرعت‌های مختلف شبیه‌سازی می‌گردد. جهت صحه‌گذاری نتایج تئوری و شبیه‌سازی، یک نمونه آزمایشگاهی از درایو پیشنهادی، طراحی، ساخته و تست می‌شود
Today, the brushless DC motors (BLDCs) have been widely used in industry due to their unique advantages. These motors are generally fed from voltage source inverters (VSIs). These inverters have a very simple structure, but have problems such as unwanted short circuit across dc-bus and using bulky capacitor in the dc-bus. Using the current source inverters (CSI) is one of the ways to reduce the mentioned problems in VSI-BLDC motor drives. In this paper, the space vector modulation (SVM) strategy is employed for switching in CSI-BLDC motor drive in order to reduce the switching losses, minimize current and torque ripple and increase the reliability of the drive. The BLDC motor drive model is implemented in the Proteus simulator software and the motor behavior is simulated at different speeds. In order to confirm the simulation results, an experimental setup system is designed, implemented and tested.
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