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Reconfigurable topologies for smarter PV modules: simulation, evaluation and implementation

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Abstract
In a reconfigurable PV panel, the connections between groups of cells (cell-strings) can be rearranged in order to increase the overall power output under non-uniform conditions. In a traditional PV panel, current mismatch between the series-connected cells (due to irradiation differences of differential aging) limits the generated power output by either reducing the overall current or by bypassing the substring containing the limiting cells. A reconfigurable panel can respond to such a situation by changing the connections to a more favorable configuration, allowing the majority of the cells to operate at their MPP. This paper elaborates on such a topology and its components (high current switches, wiring). To get a clearer picture of the added value of such a reconfigurable panel, a detailed energy yield analysis was performed which includes the performance of those added components. The simulation model used for this analysis is calibrated with extensive measurement results. A comparison of that model and corresponding measurements will be discussed. The analysis shows that a reconfigurable PV panel can outperform the traditional panels when suboptimal conditions are predominant, as encountered for instance in BIPV. As a demonstration of the principle, a small-scale prototype was created and will be presented in this paper.
Keywords
Energy Performance, Shading, Configurable Topology, PV System

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Chicago
Bauwens, Pieter, Jonathan Govaerts, Maro Baka, Francky Catthoor, Kris Baert, Giel Van den Broeck, Hans Goverde, Dimitris Anagnostos, Jan Doutreloigne, and Jef Poortmans. 2016. “Reconfigurable Topologies for Smarter PV Modules: Simulation, Evaluation and Implementation.” In 32nd EU PVSEC, Proceedings, 61–65.
APA
Bauwens, P., Govaerts, J., Baka, M., Catthoor, F., Baert, K., Van den Broeck, G., Goverde, H., et al. (2016). Reconfigurable topologies for smarter PV modules: simulation, evaluation and implementation. 32nd EU PVSEC, Proceedings (pp. 61–65). Presented at the 32nd EU PVSEC.
Vancouver
1.
Bauwens P, Govaerts J, Baka M, Catthoor F, Baert K, Van den Broeck G, et al. Reconfigurable topologies for smarter PV modules: simulation, evaluation and implementation. 32nd EU PVSEC, Proceedings. 2016. p. 61–5.
MLA
Bauwens, Pieter, Jonathan Govaerts, Maro Baka, et al. “Reconfigurable Topologies for Smarter PV Modules: Simulation, Evaluation and Implementation.” 32nd EU PVSEC, Proceedings. 2016. 61–65. Print.
@inproceedings{8040132,
  abstract     = {In a reconfigurable PV panel, the connections between groups of cells (cell-strings) can be rearranged in order to increase the overall power output under non-uniform conditions. In a traditional PV panel, current mismatch between the series-connected cells (due to irradiation differences of differential aging) limits the generated power output by either reducing the overall current or by bypassing the substring containing the limiting cells. A reconfigurable panel can respond to such a situation by changing the connections to a more favorable configuration, allowing the majority of the cells to operate at their MPP. This paper elaborates on such a topology and its components (high current switches, wiring). To get a clearer picture of the added value of such a reconfigurable panel, a detailed energy yield analysis was performed which includes the performance of those added components. The simulation model used for this analysis is calibrated with extensive measurement results. A comparison of that model and corresponding measurements will be discussed. The analysis shows that a reconfigurable PV panel can outperform the traditional panels when suboptimal conditions are predominant, as encountered for instance in BIPV. As a demonstration of the principle, a small-scale prototype was created and will be presented in this paper.},
  author       = {Bauwens, Pieter and Govaerts, Jonathan and Baka, Maro and Catthoor, Francky and Baert, Kris and Van den Broeck, Giel and Goverde, Hans and Anagnostos, Dimitris and Doutreloigne, Jan and Poortmans, Jef},
  booktitle    = {32nd EU PVSEC, Proceedings},
  isbn         = {3-936338-41-8},
  language     = {eng},
  location     = {M{\"u}nich, Germany},
  pages        = {61--65},
  title        = {Reconfigurable topologies for smarter PV modules: simulation, evaluation and implementation},
  url          = {http://dx.doi.org/10.4229/EUPVSEC20162016-1BO.12.6},
  year         = {2016},
}

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