کنترل پیش‌بین چندهدفه سامانه درایو دوموتوره با اینورتر پنج ساق
محورهای موضوعی : مهندسی برق و کامپیوتر
رضا محمدی نیک
1
(مجتمع دانشگاهی برق و کامپیوتر، دانشگاه صنعتی مالک اشتر)
محمدرضا علیزاده پهلوانی
2
(مجتمع دانشگاهی برق و کامپیوتر، دانشگاه صنعتی مالک اشتر)
آرش دهستانی کلاگر
3
(مجتمع دانشگاهی برق و کامپیوتر، دانشگاه صنعتی مالک اشتر)
کلید واژه: کنترل پیش‌بین مبتنی بر مدل, درایو چندموتوره, کاهش ریپل گشتاور, اینورتر پنج ساق,
چکیده مقاله :
سیستم‌های درایو دوموتوره به دلیل مزایای بسیاری از جمله کاهش ابعاد و هزینه، به طور گسترده مورد استقبال قرار گرفته است. در این مقاله، روش کنترل پیش‌بین مبتنی بر مدل (MPC) برای سیستم درایو دوموتوره تغذیه شده با اینورتر پنج ساق (FLI) معرفی شده است. از جمله مزایای روش MPC می‌توان ردیابی مستقل و سریع متغیرهای کنترلی و نیز حذف ساختارهای کنترل آبشاری وابسته به مدولاتور را برای سیستم‌های چندموتوره نام برد. در روش‌های MPC مرسوم، جهت کنترل سرعت از حلقه‌های PI جهت تولید سیگنال مرجع استفاده می شود. حلقه‌های PI، معایبی همچون پاسخ زمانی با تاخیر قابل توجه و همچنین محدودیت طراحی ضرایب PI با توجه به ساختار FLI را به همراه دارند. در این مقاله با استفاده از روش کنترل پیش‌بین مبتنی بر مدل چندهدفه متناسب با سرعت و جریان (MOMPC)، حلقه‌های کنترلی PI حذف شده است. یکی از چالش‌های این ساختار نحوه اختصاص ولتاژ لینک DC به موتورها است. بدین منظور، با تعریف دوره عملکرد متناسب با ولتاژ حالت دائمی موتورها، ولتاژ لینک DC اینورتر بین موتورها تفکیک می‌شود. علاوه‌براین، با به‌کارگیری این روش، اهداف کنترلی دو موتور، مجزاء از یکدیگر شده که این کار موجب کاهش ریپل گشتاور و ریپل جریان موتورها می‌شود.
Dual-motor drive systems have been widely favored due to many advantages, including reduced dimensions and cost. In this paper, a model-based predictive control (MPC) method for a dual-motor drive system fed by a five-leg inverter (FLI) is introduced. Among the advantages of the MPC method, the independent and fast tracking of reference control variables and the elimination of cascade control structures dependent on the modulator for multi-motor systems can be mentioned. PI loops have disadvantages such as delayed time response, as well as design limitations of PI coefficients due to the FLI structure. In this paper, using the predictive control method based on the multi-objective model proportional to speed and current (MOMPC), the PI control loops have been removed. One of the challenges of this structure is how to allocate the DC link voltage to the motors. For this purpose, by defining the duty cycle corresponding to the steady-state voltage of the motors, the DC link voltage of the inverter is shared between the motors. In addition, by using this method, the control objectives of two motors become independent from each other, which reduce the torque ripple and current ripple of the motors.
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