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Developing Fuzzy Logic Controller based on Perturb and Observe technique to improve the efficiency of Solar Photovoltaic Energy Systems using Matlab/Simulink

تطوير متحكم عائم مرتكز على تقنية الاضطراب و المراقبة لتحسين كفاءة نظم الطاقة الشمسية الكهروضوئية باستخدام MATLAB/SIMULINK

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 Publication date 2016
and research's language is العربية
 Created by Shamra Editor




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This research deals with improving the efficiency of solar photovoltaic (PV) power systems using a Fuzzy Logic Controller (FLC) for Maximum Power Point Tracking (MPPT), to control the duty cycle of DC-DC Voltage Converter, to achieve the photovoltaic system works at a Maximum Power Point under different atmospheric changes of the solar insolation and ambient temperature. In this context, this research presents a new model for FLC developed in Matlab/Simulink environment. The proposed model for the controller is based on the conventional Perturb and Observe (P&O) technique. Where, in similar to the conventional P&O technique, the changes in the Power and tension of photovoltaic power system, are considered as the input variables of the proposed controller, while the output variable is the change in the duty cycle. The main advantage of the developed controller FLC, based on the considering the change in the duty cycle has a Variable Step Size, and directly related to the changes in the power and tension of the Photovoltaic system. Which make it possible to overcome the problem of fixed Step Size in the change of the duty cycle in the conventional MPPT- P&O Controller based on P&O technique. The MPPT- P&O Fuzzy, works by a variable step size achieve a fast speed response and high efficiency for tracking the MPP point under sudden and rapidly varying atmospheric conditions, compared with the conventional MPPT- P&O. The simulation results completed in Matlab/Simulink environment, showed the best performance of developed MPPT- P&O Fuzzy controller in tracking the MPP by achieving a better dynamic performance and high accuracy, compared with the use of the conventional MPPT- P&O under different atmospheric changes.


Artificial intelligence review:
Research summary
يتناول هذا البحث تحسين كفاءة نظم الطاقة الشمسية الكهروضوئية باستخدام متحكم عائم لتتبع نقطة الاستطاعة العظمى (MPPT)، للتحكم في دورة عمل مبدل جهد مستمر. يتم تحقيق ذلك من خلال نموذج جديد لمتحكم عائم MPPT-P&O Fuzzy مطور في بيئة Matlab/Simulink، يعتمد على تقنية الاضطراب والمراقبة (P&O). يتميز المتحكم العائم بخطوة تشغيل متغيرة تتعلق بتغيرات الاستطاعة والتوتر للنظام الكهروضوئي، مما يمكن من التغلب على مشكلة الخطوة الثابتة في المتحكم التقليدي. أظهرت نتائج المحاكاة أن المتحكم العائم يحقق سرعة استجابة عالية وكفاءة أفضل في تتبع نقطة MPP مقارنة مع المتحكم التقليدي MPPT-P&O، خاصة عند التغيرات الجوية المفاجئة والسريعة. تم اختبار فعالية المتحكم العائم من خلال محاكاة نظام توليد طاقة كهروضوئي في بيئة Matlab/Simulink، وأظهرت النتائج أداءً ديناميكياً أفضل ودقة عالية في تتبع نقطة MPP.
Critical review
دراسة نقدية: يعتبر البحث مساهمة قيمة في مجال تحسين كفاءة نظم الطاقة الشمسية الكهروضوئية، حيث يقدم حلاً مبتكراً باستخدام متحكم عائم يعتمد على تقنية الاضطراب والمراقبة. ومع ذلك، يمكن الإشارة إلى بعض النقاط التي قد تحتاج إلى مزيد من التوضيح أو التحسين. أولاً، قد يكون من المفيد تقديم مقارنة أكثر تفصيلاً بين المتحكم العائم والتقنيات الأخرى المتقدمة مثل الشبكات العصبونية والخوارزميات الجينية. ثانياً، يمكن تحسين البحث من خلال تقديم دراسة تجريبية على نظام فعلي بدلاً من الاعتماد فقط على المحاكاة. أخيراً، يمكن توضيح كيفية تأثير تغيرات الظروف الجوية على الأداء بشكل أكثر تفصيلاً، وتقديم توصيات عملية لتطبيق المتحكم العائم في نظم الطاقة الشمسية الكهروضوئية الفعلية.
Questions related to the research
  1. ما هي التقنية المستخدمة في المتحكم العائم لتحسين كفاءة نظم الطاقة الشمسية الكهروضوئية؟

    التقنية المستخدمة هي تقنية الاضطراب والمراقبة (P&O) مع متحكم عائم بخطوة تشغيل متغيرة.

  2. ما هي الميزة الرئيسية للمتحكم العائم المطور مقارنة بالمتحكم التقليدي MPPT-P&O؟

    الميزة الرئيسية هي خطوة التشغيل المتغيرة التي تتعلق بتغيرات الاستطاعة والتوتر، مما يتيح سرعة استجابة عالية وكفاءة أفضل في تتبع نقطة MPP.

  3. كيف تم اختبار فعالية المتحكم العائم في البحث؟

    تم اختبار فعالية المتحكم العائم من خلال محاكاة نظام توليد طاقة كهروضوئي في بيئة Matlab/Simulink، ومقارنة النتائج مع المتحكم التقليدي MPPT-P&O.

  4. ما هي التوصيات المستقبلية التي يمكن استنتاجها من البحث؟

    يمكن استكمال العمل باستخدام تقنيات تحكم متقدمة أخرى كالتحكم باستخدام الشبكات العصبونية والخوارزميات الجينية، ومقارنة نتائج هذه التقنيات مع التقنيات المستخدمة في هذا البحث.


References used
RAVI, N.; RAVI, M. A study on Maximum Power Point Tracking techniques for Photovoltaic systems. International Journal of Engineering and Technical Research. 3, 2015, 189-196
SHARMA, D.; PUROHIT, G. Hybrid Control Method for Maximum Power Point Tracking (MPPT) of Solar PV Power Generating System. Australian Journal of Basic and Applied Sciences. 8, 2014, 255-262
TOFOLI, F.; PEREIR, D.; PAULA, W. Comparative Study of Maximum Power Point Tracking Techniques for Photovoltaic Systems. International Journal of Photo energy. Volume 2015, Article ID 812582, 10 pages
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