NDLI: Distributed multi-sensor network for real time monitoring of illumination states for a reconfigurable solar photovoltaic array

Content Provider	IEEE Xplore Digital Library
Author	Patnaik, B. Mohod, J.D. Duttagupta, S.P.
Copyright Year	2012
Description	Author affiliation: Department of Electrical Engineering, IIT Bombay, Mumbai - 400076, India (Patnaik, B.; Mohod, J.D.; Duttagupta, S.P.)
Abstract	In a solar photovoltaic (SPV) array [mxn] the solar modules are connected in series and parallel to achieve desired power output. The SPV array performance depends on different parameters such as incident insolation, temperature, array layout, shading etc. Shading due to cloud cover results in Non-Uniform Illumination (NUI STATES- BRIGHT, GREY and DARK). Mismatch in currents and voltages of the modules due to change in one or more parameters leads to loss in output power. Hence real time monitoring of current (I, di/dt) for each solar module and bypass diode in the SPV array is necessary. In addition temperature sensors are required to monitor open-circuit voltage (Voc) fluctuations. Previously, we have demonstrated optimization of an SPV array in BRIGHT and DARK state [1]. However in field testing we have observed an intermediate GREY state as well. The power output can be depressed in a string having multiple state modules in series. In this paper we have proposed a reconfiguration strategy whereby modules are categorized into BRIGHT, GREY, and DARK illumination states. Based on this strategy it has been demonstrated that a reconfigured SPV array will yield maximum power at the highest operating voltage.
Starting Page	106
Ending Page	109
File Size	1483876
Page Count	4
File Format	PDF
ISBN	9781467310406
e-ISBN	9781467310437
DOI	10.1109/ISPTS.2012.6260892
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-07
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Temperature measurement Temperature sensors Microcontrollers Lighting Arrays Solar Photovoltaics Monitoring Non-Uniform Illumination Reconfiguration
Content Type	Text
Resource Type	Article

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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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