طراحی کنترل‌کننده پسگام زیربهینه برای کنترل فیلتر اکتیو موازی به منظور جبران هارمونیک با استفاده از الگوریتم بهینه‌ساز نهنگ

سرافرازی, پریسا; طاهر, سید عباس; اخوان, علی

doi:10.22052/scj.2024.255064.1252

طراحی کنترل‌کننده پسگام زیربهینه برای کنترل فیلتر اکتیو موازی به منظور جبران هارمونیک با استفاده از الگوریتم بهینه‌ساز نهنگ

نوع مقاله : مقاله پژوهشی

نویسندگان

¹ گروه مهندسی برق-قدرت، دانشکده مهندسی برق و کامپیوتر، دانشگاه کاشان، کاشان، ایران.

² دانشکده انرژی، دانشگاه آلبورگ، آلبورگ، دانمارک.

10.22052/scj.2024.255064.1252

چکیده

در این مقاله، با استفاده از الگوریتم بهینه‌ساز نهنگ و با بهره‌گیری از معیار انتگرال زمان-قدرمطلق خطا (ITAE) به تنظیم بهینه پارامترهای کنترل‌کننده پسگام به منظور بهبود عملکرد فیلترهای اکتیو موازی در سیستم‌های توزیع چهارسیمه پرداخته شده است، به طوری که برای کاهش هارمونیک جریان شبکه با قرار دادن فیلتر اکتیو موازی در نقطه اتصال مشترک (PCC) از طریق فیلتر LCL، میزان هارمونیک موجود در جریان شبکه را به حداقل رسانده و سعی در سینوسی نمودن آن می‌کند. در اکثر مراجع، انتخاب ضرایب کنترل‌کننده پسگام بر اساس آزمون و خطا انجام می‌گیرد که علاوه بر زمانبر بودن، تضمینی برای صحت انتخاب ضرایب وجود ندارد. هدف این مقاله یافتن پارامترهای زیربهینه کنترل‌کننده پسگام با استفاده از الگوریتم نهنگ است که از دقت و سرعت همگرایی بالایی برخوردار است. به کمک این الگوریتم، ضرایب پسگام با به حداقل رساندن معیار خطای انتخاب شده به صورت زیربهینه تعیین می‌شوند که نقش بسزایی در بهبود عملکرد کنترل‌کننده و در نتیجه فیلتر نمودن مناسب هارمونیک‌های جریان شبکه دارد. کارایی روش پیشنهادی از طریق شبیه‌سازی سناریوهای مختلف نشان داده شده است. با بررسی و ارزیابی نتایج، مشاهده می‌شود که روش پیشنهادی در بهبود کیفیت توان در سیستم‌های توزیع عملکرد بسیار خوبی دارد.

کلیدواژه‌ها

موضوعات

برق - قدرت

عنوان مقاله [English]

Suboptimal backstepping controller design for controlling shunt active power filter to compensate harmonics using the whale optimization algorithm

نویسندگان [English]

Parisa Sarafrazi ¹
Seyed Abbas Taher ¹
Ali Akhavan ²

¹ Department of Electrical Engineering - Power, Faculty of Electrical and Computer Engineering, University of Kashan, Kashan, Iran.

² Department of AAU Energy, Aalborg University, Aalborg, Denmark.

چکیده [English]

This article discusses the use of the whale optimization algorithm and the integral time-absolute error criterion (ITAE) to adjust the optimal parameters of the backstepping controller. The goal is to improve the performance of active power filters based on LCL filters in four-wire distribution systems. By using a shunt active power filter with the proposed method at the point of common coupling (PCC), the approach minimizes harmonics in the grid current and makes it more sinusoidal. In most references, the selection of backstepping controller coefficients is based on trial and error, which, in addition to being time-consuming, provides no guarantee for the correctness of the selection. The purpose of this article is to find the sub-optimal parameters of the backstepping controller using the whale optimization algorithm, known for its high accuracy and convergence speed. By minimizing the selected error criterion, the algorithm sub-optimally determines the backstepping parameters, significantly improving the controller's performance and ensuring the proper filtering of grid current harmonics. The effectiveness of the proposed method is demonstrated through simulations of different scenarios. The results show that the proposed method performs very well in improving power quality in distribution systems.

کلیدواژه‌ها [English]

Whale optimization algorithm
Unbalanced load
Non-linear load
Backstepping control
Active power filter
Harmonic/Interharmonic

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