NDLI: Efficient global maximum power point tracking technique for a partially shaded photovoltaic string

Content Provider	IET Digital Library
Author	Manickam, Chakkarapani Raman, Guru Praanesh Raman, Guru Raghav Ganesan, Saravana Ilango Chilakapati, Nagamani
Abstract	Maximum power point tracking (MPPT) is essential for a photovoltaic (PV) system in order to maximise the utilisation of solar energy. Under partially shaded conditions (PSC), PV strings with bypass diodes exhibit multiple peaks in the power–voltage (P–V) characteristics. Although various Global MPPT (GMPPT) algorithms have been proposed to address this issue, most of them cannot distinguish between PSC and uniform insolation, leading to the scan of the entire P–V curve under uniform insolation levels. This study introduces a general method to detect the occurrence of PSC in a PV string thereby dispensing the need to scan the entire PV curve under uniform insolation. Further, a simple technique is proposed to determine the GMPP with the minimum possible search space under PSC. The proposed algorithms for the detection of partial shading and GMPPT are validated experimentally.
Starting Page	2637
Ending Page	2644
Page Count	8
ISSN	17554535
Volume Number	9
e-ISSN	17554543
Issue Number	Issue 14, Nov (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/9/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2015.1040
Journal	IET Power Electronics
Publisher Date	2016-11-16
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Bypass Diodes Global Maximum Power Point Tracking Technique GMPPT Algorithm Maximum Power Point Trackers Partially Shaded Photovoltaic String Photovoltaic Power System Power–voltage Characteristic PSC PV System P–V Characteristic P–V Curve Solar Energy Solar Power Solar Power Stations Uniform Insolation Level
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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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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