NDLI: Implementation of a modified perturb and observe maximum power point tracking algorithm for photovoltaic system using an embedded microcontroller

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Implementation of a modified perturb and observe maximum power point tracking algorithm for photovoltaic system using an embedded microcontroller

Content Provider	IET Digital Library
Author	Elbaset, Adel A. Ali, Hamdi Sattar, Montaser Abd El Khaled, Mahmoud
Abstract	The conventional algorithm of perturb and observe (P&O) is widely applied due to its simplicity, low cost and easy implementation. However, it suffers from instabilities during rapid changes of weather and/or oscillation around maximum power point (MPP) at steady state. Instabilities occur due to the incorrect decision taken by the conventional P&O algorithm at the first step change in duty cycle during the rapid change in radiation. The reason for the steady-state oscillation is the continuous perturbation and tradeoff between step sizes and the convergence time. This study presents a modified P&O algorithm to overcome such drawbacks. It uses a constant load technique to help the conventional P&O algorithm for recognising the cause of power change and to enable it in taking the right decision at first step change in duty cycle during rapid change of weather. The proposed algorithm is simulated using a single solar photovoltaic module of 80 W and a DC/DC boost converter. It is validated experimentally and implemented within an embedded microcontroller. The experimental setup presents a proposed model-based design methodology that uses measurements’ data for MPP tracking systems’ design. It combines hardware-in-the-loop simulation and prototype testing using actual weather measurements. Simulation and experiments show excellent results.
Starting Page	551
Ending Page	560
Page Count	10
ISSN	17521416
Volume Number	10
e-ISSN	17521424
Issue Number	Issue 4, Apr (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/10/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2015.0309
Journal	IET Renewable Power Generation
Publisher Date	2016-04-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Constant Load Technique Control of Electric Power System DC/DC Boost Converter Embedded Microcontroller Embedded System Hardware-in-the-loop Simulation Maximum Power Point Trackers Microcontroller Model-based Design Methodology Modified P&O Algorithm Modified Perturb And Observe Maximum Power Point Tracking Algorithm MPP Tracking System Perturbation Technique Photovoltaic Power System Photovoltaic System Single Solar Photovoltaic Module Solar Power Stations Steady-state Oscillation
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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