NDLI: Improved performance low-cost incremental conductance PV MPPT technique

Content Provider	IET Digital Library
Author	Zakzouk, Nahla E. Elsaharty, Mohamed A. Abdelsalam, Ahmed K. Helal, Ahmed A. Williams, Barry W.
Abstract	Variable-step incremental conductance (Inc.Cond.) technique, for photovoltaic (PV) maximum power point tracking, has merits of good tracking accuracy and fast convergence speed. Yet, it lacks simplicity in its implementation due to the mathematical division computations involved in its algorithm structure. Furthermore, the conventional variable step-size, based on the division of the PV module power change by the PV voltage change, encounters steady-state power oscillations and dynamic problems especially under sudden environmental changes. In this study, an enhancement is introduced to Inc.Cond. algorithm in order to entirely eliminate the division calculations involved in its structure. Hence, algorithm implementation complexity is minimised enabling the utilisation of low-cost microcontrollers to cut down system cost. Moreover, the required real processing time is reduced, thus sampling rate can be improved to fasten system response during sudden changes. Regarding the applied step-size, a modified variable-step size, which depends solely on PV power, is proposed. The latter achieves enhanced transient performance with minimal steady-state power oscillations around the MPP even under partial shading. For proposed technique's validation, simulation work is carried out and an experimental set up is implemented in which ARDUINO Uno board, based on low-cost Atmega328 microcontroller, is employed.
Starting Page	561
Ending Page	574
Page Count	14
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.2015.0203
Journal	IET Renewable Power Generation
Publisher Date	2016-04-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Algorithm Implementation Complexity Minimization ARDUINO Uno Board Computational Complexity Division Calculation Elimination Improved Performance Low-cost Incremental Conductance PV MPPT Technique Low-cost Atmega328 Microcontroller Utilisation Mathematical Division Computations Maximum Power Point Trackers Microcontroller Microprocessor Chips Microprocessors And Microcomputer Modified Variable-step Size Photovoltaic Maximum Power Point Tracking Photovoltaic Power System Power Engineering Computing Power System Analysis Computing PV Module Power Change PV Voltage Change Real Processing Time Reduction Sampling Rate Improvement Solar Power Stations Steady-state Power Oscillations Sudden Environmental Changes Transient Performance Enhancement Variable-step Incremental Conductance Technique
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
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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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