Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2748

Full Length Research Paper

An experimental setup to seek for maximum power point tracking of photovoltaic panels

Henrique Silveira Meyer1*, Álvaro Manoel de Souza Soares1,2, Otávio Simões de Araújo Neto1, Pedro Paulo Leite do Prado3 and João Bosco Gonçalves3
1Department of Mechanical Engineering, University of Taubate, Taubate, Brazil. 2Department of Mechanics, UNESP – Univ Estadual Paulista, Guaratinguetá, Brazil. 3Department of Electrical Engineering, University of Taubate, Taubate, Brazil.
Email: [email protected]

  •  Published: 18 December 2013

Abstract

Energy is a very important issue nowadays. In the last years a lot of researchers have dedicated their studies to looking for new energy sources. In Brazil, we have the privilege to have an amount of sunlight per year - very high all over the country. This fact motivated this research. In this work we present an experimental approach for achieving maximum power point tracking of photovoltaic panels. To do so, we assemble an experiment composed by a small photovoltaic panel which is attached to a step motor shaft and can turn, controlled by the step motor, from a 2prd angle. The idea is to use the photovoltaic panel as sensor of solar energy. The step motor turns and exposes the panel to the sunlight. The voltage produced by the panel is acquired with a data acquisition board and its maximum value is chosen as the best point and associate to the number of steps needed to reach this point. The number of steps indicates the best panel position. The experimental setup was tested and preliminary results show that the best position of the panel is always reached and the automated process is quite reliable.

Key words: Photovoltaic panel, solar energy, step motor, LabVIEW.