An algorithm to detect partial shading conditions in a PV system
An algorithm to detect partial shading conditions in a PV system
Multiple local maxima (MPPs) are presented on the P-V curve of a PV system under partial shading conditions. In general, standard maximum power point tracking (MPPT) algorithms have trouble locating the global maximum, leading often to suboptimal operation at a local MPP, and thus to decreased efficiency. In commercial inverters, this situation is mitigated by performing periodically scans of the characteristic curve to relocate the global MPP. However, this procedure entails fluctuation of the power output, as well as, short-term power losses. To limit these implications, a simple algorithm is introduced in this paper, which mathematically determines whether a PV system is partially shaded or not, thus avoiding unnecessary curve scans at uniform illumination. The proposed method needs only datasheet information and a temperature sensor, while it is applicable to any PV topology, multiple irradiance levels and is readily implemented as an enhancement to any existing MPPT algorithm.
Curve scan, Detection, MPPT, Partial shading, Photovoltaic
303-308
Batzelis, Efstratios
2a85086e-e403-443c-81a6-e3b4ee16ae5e
Papathanassiou, Stavros
49cbcb43-649a-47c2-b294-9bc4d88898b9
2016
Batzelis, Efstratios
2a85086e-e403-443c-81a6-e3b4ee16ae5e
Papathanassiou, Stavros
49cbcb43-649a-47c2-b294-9bc4d88898b9
Batzelis, Efstratios and Papathanassiou, Stavros
(2016)
An algorithm to detect partial shading conditions in a PV system.
Mamalis, A.G., Kladas, Antonios G., Enokizono, Masato, Enokizono, Masato and Lazarov, Vladimir
(eds.)
In Applied Electromagnetic Engineering for Advanced Materials from Macroto Nanoscale.
vol. 856,
Trans Tech Publications.
.
(doi:10.4028/www.scientific.net/MSF.856.303).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Multiple local maxima (MPPs) are presented on the P-V curve of a PV system under partial shading conditions. In general, standard maximum power point tracking (MPPT) algorithms have trouble locating the global maximum, leading often to suboptimal operation at a local MPP, and thus to decreased efficiency. In commercial inverters, this situation is mitigated by performing periodically scans of the characteristic curve to relocate the global MPP. However, this procedure entails fluctuation of the power output, as well as, short-term power losses. To limit these implications, a simple algorithm is introduced in this paper, which mathematically determines whether a PV system is partially shaded or not, thus avoiding unnecessary curve scans at uniform illumination. The proposed method needs only datasheet information and a temperature sensor, while it is applicable to any PV topology, multiple irradiance levels and is readily implemented as an enhancement to any existing MPPT algorithm.
This record has no associated files available for download.
More information
Published date: 2016
Additional Information:
Publisher Copyright:
© 2016 Trans Tech Publications, Switzerland.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
Venue - Dates:
9th Japanese-Mediterranean Workshop on Applied Electromagnetic Engineering for Magnetic, Superconducting, Multifunctional and Nano Materials, 2015, , Sofia, Bulgaria, 2015-07-05 - 2015-07-08
Keywords:
Curve scan, Detection, MPPT, Partial shading, Photovoltaic
Identifiers
Local EPrints ID: 449663
URI: http://eprints.soton.ac.uk/id/eprint/449663
ISSN: 0255-5476
PURE UUID: 5446d78c-a981-4fb9-8af9-36966399daac
Catalogue record
Date deposited: 10 Jun 2021 16:31
Last modified: 17 Mar 2024 04:06
Export record
Altmetrics
Contributors
Author:
Efstratios Batzelis
Author:
Stavros Papathanassiou
Editor:
A.G. Mamalis
Editor:
Antonios G. Kladas
Editor:
Masato Enokizono
Editor:
Masato Enokizono
Editor:
Vladimir Lazarov
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics