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Abstract
An online diagnostic module for condition monitoring of two series-connected photovoltaic panels is presented. The technique is based on firstly perturbing the terminal voltages and currents of the panels with a switched-inductor circuit, which can also be used for differential power processing, to obtain the large-signal dynamic current-voltage characteristics of the panels. An evolutionary algorithm is used to estimate the intrinsic parameters of the panels from the time series of the sampled panel current and voltage. The conditions of the panels are monitored by observing the long-term changes in the extracted intrinsic parameters. Prototype data acquisition module for studying the conditions of solar panels of different technologies (amorphous and crystalline silicon) with different degrees of damage has been built and evaluated. Results reveal that the estimated intrinsic parameters from large-signal dynamic characteristic correlate with the observed health status of the tested panels. Theoretical predictions are favorably compared with experimental measurements.
Original language | English |
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Journal | Solar Energy |
Volume | 196 |
Pages (from-to) | 243-259 |
Number of pages | 17 |
ISSN | 0038-092X |
DOIs | |
Publication status | Published - Jan 2020 |
Bibliographical note
Funding Information:The work was supported by a grant from the Innovation Fund Denmark through the project APETT with no.: 6154-00010B .
Publisher Copyright:
© 2019 International Solar Energy Society
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
Keywords
- Evolutionary computation
- Fault diagnosis
- Photovoltaic panels
- Photovoltaic systems
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- 1 Finished
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APETT: Advanced Power Electronic Technology and Tools
Blaabjerg, F., Munk-Nielsen, S., Iannuzzo, F., Wang, H., Uhrenfeldt, C., Beczkowski, S. M., Zhou, D., Choi, U., Jørgensen, A. B., Vernica, I., Sangwongwanich, A., Christensen, N., Ceccarelli, L., Nielsen, C. K., Bahman, A. S., Pedersen, K., Pedersen, K. B. & Kristensen, P. K.
01/01/2017 → 30/06/2021
Project: Research