بهبود پاسخ دینامیکی ژنراتور القائی دوسو تغذیه در برابر ولتاژ پایین شبکه به کمک سیستم کنترلی مبتنی بر حالت لغزش انتگرالی با مرجع توان راکتیو متغییر

محورهای موضوعی : انرژی های تجدیدپذیر

حمید مقدسی ¹ (دانشکده مهندسی برق- واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد، ایران)
محمدرضا مرادیان ² (مرکز تحقیقات ریز شبکه های هوشمند- واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد، ایران)

تاریخ دریافت : 1400/07/28 تاریخ پذیرش : 1400/10/11 تاریخ انتشار : 1402/09/01

کلید واژه: کنترل مستقل توان, ژنراتور‌های القایی دوسو تغذیه, قابلیت عبور از ولتاژ پایین, کنترل‌کننده مد لغزشی,

چکیده مقاله :

در این مقاله به منظور بهبود پاسخ دینامیکی ژنراتور القایی دوسوتغذیه (DFIG)، یک سیستم کنترلی جدید مبتنی بر کنترل کننده سطح لغزش پیشنهاد شده است. به این منظور کنترل مستقل توان های اکتیو و راکتیو خروجی ژنراتور از طریق یک کنترل کننده مد لغزشی (SMC) که در برابر اغتشاشات خارجی و نامعینی های سیستم مقاوم است، کنترل می گردد. برای بهبود عملکرد کنترل در حالت ماندگار، مدل انتگرالی کنترل کننده مد لغزشی (ISMC) و برای بهبود قابلیت عبور از ولتاژ پائین (LVRT) ژنراتور در شرایط وقوع خطا، کنترل کننده توان راکتیو با مرجع متغیر مبتنی بر کنترل کننده متناسب-انتگرال گیر (PI) پیشنهاد شده است. عملکرد کنترل کننده پیشنهادی در مدت زمان ردیابی توان مرجع، با دو سیستم کنترلی دیگر که مرجع ثابتی برای توان راکتیو داشته و مبتنی بر کنترل کننده های SMC و PI هستند در ۹ حالت مختلف خطا مقایسه شده است. خطاهای تک فاز به زمین، دو فاز به زمین و سه فاز به زمین در حالت های زیر سنکرون، سنکرون و فوق سنکرون حالت های مختلف مورد نظر در مقایسه سیستم های کنترلی هستند. نتایج شبیه‌سازی با استفاده از نرم افزار سیمولینک متلب، نشان دهنده رفتار حالت گذرای مناسب تر و به ویژه فراجهش های کمتر جریان، ولتاژ لینک DC و توان اکتیو خروجی در سیستم کنترل پیشنهادی در مقایسه با دو سیستم دیگر در شرایط وقوع انواع خطا بوده است.

چکیده انگلیسی:

In this paper, a sliding mode controller with an adjustable reactive power reference value is proposed. To improve the performance of the controller in a steady-state, an Integral Sliding Mode Control is designed and used. In addition, to improve the low-voltage ride-through capability in the fault condition, a reactive power controller with an adjustable reference value is proposed. The performance of this control system, during the power track, is compared with two other control systems that have a fixed reference for reactive power and are based on SMC and PI controllers in 9 different fault modes. These 9 different modes include one-phase, two-phase, and three-phase short circuit faults in the sub-synchronous, synchronous, and super-synchronous mode of operation for DFIG. The proposed method has been implemented in Simulink/MATLAB software. The simulation results confirm the capability and effectiveness of the proposed control system in comparison with two other aforementioned control systems.

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