Cascaded Cell String Current Diverter For Improvement Of Photovoltaic Solar Array Under Partial Shading Problems

Authors

  • Cláudio H. G. dos Santos Federal Center of Technological Education of Minas Gerais – CEFET-MG, 1Divinópolis - MG, Brazil
  • Pedro F. Donoso-Garcia Federal University of Minas Gerais – UFMG, Belo Horizonte - MG, Brazil
  • Seleme I. Seleme Jr Federal University of Minas Gerais – UFMG, Belo Horizonte - MG, Brazil
  • André P. Magalhães Federal Center of Technological Education of Minas Gerais – CEFET-MG, 1Divinópolis - MG, Brazil

DOI:

https://doi.org/10.18618/REP.2015.3.2542

Keywords:

Current Diverter, Efficiency Enhancement, Partial Shading, PV Modules, String Converter

Abstract

Partial shading has shown to be a common efficiency issue for photovoltaic arrays installations, whether for islanded or grid-tied systems. Current diverter appears as reasonable solution, but with the increasing of string order, the currents deviated difficult the sizing of inductors. Also, in this type of converter, a multilevel synchronized gate-driver is needed. In this work, an independently cell string current diverter is proposed. This configuration is based in the Non-Dissipative String Current Diverter, however, its inductors current achieve low values during partial shading, and does not need synchronism of its gate-drivers. Also, this configuration facilitates one local Maximum Power Point Tracking for each module, and enables the enhancement of efficiency with simple implementation. The simulation and experimental results are presented to give support to the theoretical development.

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Author Biographies

Cláudio H. G. dos Santos, Federal Center of Technological Education of Minas Gerais – CEFET-MG, 1Divinópolis - MG, Brazil

was born in October 05, 1982 in Divinópolis, MG – Brazil. Has received his M.Sc and B.Sc. degrees in Electrical Engineering from CEFET-MG in Belo Horizonte, Brazil in 2008 and 2011, respectively. Nowadays, he is a teacher member of de Mechatronics Engineer Department of CEFET-MG, located in St. Álvares Azevedo 400, in Divinópolis, Brazil. He also had same position in the Federal University of Outo Preto, MG – Brazil. His currently research interest is power-quality-related issues, solar PV technology, switching power supplies and repetitive control. His previous interest was in EMC, antennas and FACTs applications.

Pedro F. Donoso-Garcia, Federal University of Minas Gerais – UFMG, Belo Horizonte - MG, Brazil

has graduated in electrical engineering option in electronics by the Universidade Federal do Rio Grande do Sul – UFRGS in 1981, he received his MSc from the Universidade Federal de Minas Gerais – UFMG and his PhD in Electrical Engineering from the Universidade Federal de Santa Catarina – UFSC in 1986 and 1991 respectively. Currently he is an Associate Professor at the Electronic Engineering Dept.–DELT–UFMG. His research interest include: high efficiency power supply, electronic ballasts and different microgrid aspects, including power electronics and distributed energy-storage systems.

Seleme I. Seleme Jr, Federal University of Minas Gerais – UFMG, Belo Horizonte - MG, Brazil

was born in Novemeber 03 1955 in Palmas, PR – Brazil. Has graduated in Electrical Engineering from EPUSP at São Paulo in 1977, obtained his M.Sc from UFSC at Florianópolis, in 1985 and his PhD from INPG at Grenoble, France, in 1994. He has made his Post Doctorate at UC Berleley, USA, in 2002. Presently he is an Associate Professor, member of the Electronic Department at the Engineering School, UFMG. His main research interests are power electronics, applied control for static converters, electrical drive systems and electromechanical systems.

André P. Magalhães, Federal Center of Technological Education of Minas Gerais – CEFET-MG, 1Divinópolis - MG, Brazil

was born in August 23, 1988 in Patos de Minas, MG – Brazil. Nowadays, he is a undergraduate Mechatronics Engineering student of CEFET-MG, located in St. Álvares Azevedo 400, in Divinópolis, Brazil. Currently his research interest is on solar PV technology, switching power supplies, solar tracking systems and grid-tied and isolated PV systems.

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Published

2015-08-31

How to Cite

[1]
C. H. G. dos Santos, P. F. Donoso-Garcia, S. I. Seleme Jr, and A. P. Magalhães, “Cascaded Cell String Current Diverter For Improvement Of Photovoltaic Solar Array Under Partial Shading Problems”, Eletrônica de Potência, vol. 20, no. 3, pp. 272–282, Aug. 2015.

Issue

Vol. 20 No. 3 (2015)

Section

Original Papers

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This work is licensed under a Creative Commons Attribution 4.0 International License.

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