The optimized string dynamic photovoltaic array
The optimized string dynamic photovoltaic array
This paper presents a novel system for producing the optimum power output from photovoltaic arrays using dynamic cell reconfiguration. The proposed approach is the first in the literature that creates strings using individual sub-strings that have been characterized and categorized ensuring maximum power extraction for a given irradiance profile. This optimized and decentralized PV architecture can produce significantly more power than a static equivalent (by an average of 22.6%) and also outperforms the sophisticated alternative known as an irradiance equalized dynamic photovoltaic array (IEq-DPVA) by an average of 13.\% for the relevant tests carried out. The paper identifies the hardware requirements to produce such a system and it describes an algorithm that performs the optimized string reconfiguration strategy. Finally, a simulator programmed in MATLAB is used to compare the performance of the optimized string DPVA (OS-DPVA) against an irradiance equalized DPVA in a series of flexibility tests.
1768-1776
Storey, J.
63627d92-8443-4c39-85aa-97eefaba4ab5
Wilson, P.
8a65c092-c197-4f43-b8fc-e12977783cb3
Bagnall, D.
5d84abc8-77e5-43f7-97cb-e28533f25ef1
Storey, J.
63627d92-8443-4c39-85aa-97eefaba4ab5
Wilson, P.
8a65c092-c197-4f43-b8fc-e12977783cb3
Bagnall, D.
5d84abc8-77e5-43f7-97cb-e28533f25ef1
Storey, J., Wilson, P. and Bagnall, D.
(2013)
The optimized string dynamic photovoltaic array.
IEEE Transactions on Power Electronics, 29 (4), .
(doi:10.1109/TPEL.2013.2265497).
Abstract
This paper presents a novel system for producing the optimum power output from photovoltaic arrays using dynamic cell reconfiguration. The proposed approach is the first in the literature that creates strings using individual sub-strings that have been characterized and categorized ensuring maximum power extraction for a given irradiance profile. This optimized and decentralized PV architecture can produce significantly more power than a static equivalent (by an average of 22.6%) and also outperforms the sophisticated alternative known as an irradiance equalized dynamic photovoltaic array (IEq-DPVA) by an average of 13.\% for the relevant tests carried out. The paper identifies the hardware requirements to produce such a system and it describes an algorithm that performs the optimized string reconfiguration strategy. Finally, a simulator programmed in MATLAB is used to compare the performance of the optimized string DPVA (OS-DPVA) against an irradiance equalized DPVA in a series of flexibility tests.
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e-pub ahead of print date: 31 May 2013
Organisations:
Nanoelectronics and Nanotechnology, EEE
Identifiers
Local EPrints ID: 353326
URI: http://eprints.soton.ac.uk/id/eprint/353326
ISSN: 0885-8993
PURE UUID: 426a3d24-1ae5-4b46-9cfe-7d33ab9a26ce
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Date deposited: 05 Jun 2013 09:43
Last modified: 14 Mar 2024 14:04
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Author:
J. Storey
Author:
P. Wilson
Author:
D. Bagnall
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