ارزیابی نرم افزاری کاهش تعداد حالات کلیدزنی و حذف ضریب وزنی در کنترل پیش‌بین جریان موتور القایی شش فاز
محورهای موضوعی : مهندسی برق و کامپیوتر
پیمان میرزایی پور
1
*
,
اسماعیل رک رک
2
,
محسن صنیعی
3
,
سیدقدرت اله سیف السادات
4
1 - دانشگاه شهید چمران اهواز
2 - دانشگاه لرستان
3 - دانشگاه شهید چمران اهواز
4 - دانشگاه شهید چمران اهواز
کلید واژه: کنترل پیش‌بین جریان, حذف ضریب وزنی, موتور القایی شش‌فاز,
چکیده مقاله :
طراحی ساده و دقیق ضریب وزنی شار برای الگوریتم کنترل پیش‌بین جریان (PCC) موضوع مهمی است که در تمامی کنترل‌کننده‌های پیش‌بین به چشم می‌آید. باید گفت که کنترل پیش‌بین جریان برای به دست آوردن پاسخ گشتاور سریع با ساختار ساده و انعطاف‌پذیر، یک روش امیدوارکننده به حساب می‌آید اما توسعه آن به درایوهای چندفاز می‌تواند نارضایتی‌هایی به دنبال داشته باشد. در این مقاله با توجه به چالش بار محاسباتی الگوریتم PCC، از روش حذف ضریب وزنی استفاده گردیده و نهایتاً کنترل جریان پیش‌بین اصلاح‌شده (VV-PCC) بدون ضریب وزنی برای درایو موتور القایی شش‌فاز به کار گرفته شده و شرایط عملکرد مختلف مانند راه‌اندازی، بارگیری ناگهانی و سرعت‌های متفاوت بررسی گردیده‌اند. در نتیجه، انتخاب یک حالت کلیدزنی در PCC منجر به جریان‌های بالای x-y می‌شود که این مشکل با روش پیشنهادی VV-PCC مبتنی بر حذف ضریب وزنی به تعداد تکرارهای کمی نیاز دارد، چرا که تعداد حالات کلیدزنی از 49 به 13 رسیده و نهایتاً سبب کاهش تلفات مسی و بهبود کیفیت توان نیز خواهد شد. نتایج و اعتبارسنجی موارد مذکور با استفاده از نرم‌افزار Matlab ارائه گردیده است.
The simple and accurate design of the flux weighting coefficient for the predictive current control (PCC) algorithm is an important issue that can be seen in all predictive controllers. It should be said that predictive current control is a promising method to obtain fast torque response with a simple and flexible structure, but its development to multi-phase drives can lead to dissatisfaction. In this article, due to the challenge of computing load of PCC algorithm, the weighting coefficient removal method is used and finally modified predictive current control (VV-PCC) without weighting coefficient is used for six-phase induction motor drive. Different operating conditions such as startup, sudden loading and different speeds have been investigated. As a result, choosing a switching state in PCC leads to high x-y currents, this problem requires a small number of repetitions with the proposed VV-PCC method based on removing the weighting factor, because the number of switching states has increased from 49 to 13, and finally It will reduce copper losses and improve power quality. The results and validation of the mentioned cases are presented using MATLAB software.
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