Design of a boost DC/DC converter for optimal operation

of a photovoltaic panel supplying a resistive load

 

M. Salhi1*, A. Saadi1, R. El-bachtiri2

1Département AEEE, Ecole Nationale Supérieure d’Arts et Métiers, BP : 15290, Université Moulay Ismaïl, Meknès, Maroc.

2Groupe REEPER, EST-Fès, laboratoire LESSI, FSDM,  Université SM BA, Maroc.

* Corresponding author. E-mail: salhi.ensam@yahoo.fr

Received: 23 December 2012; revised version accepted: 30 January 2013

 

Abstract

    A way of optimizing the cost of the kilowatt-hour is to extract the maximum power from the photovoltaic panel (PV). The PV panel efficiency, for a given conditions, is maximal when its voltage equals a particular value. This optimal voltage depends on irradiance, temperature and panel state. In this paper, we consider a photovoltaic panel system supplying a resistor through a boost DC/DC converter. This converter, controlled by a PI regulator, is used as an interface between the PV and the resistor to track the maximum power point of the PV panel. It is characterised by its duty cycle a (0 £ a £ 1) that gives the ratio between the input and the output voltages when the conduction is continuous. So, we have determined all parameters of the boost DC/DC converter for a continuous conduction mode in order to transfer maximum power from the solar panel to the resistive load. Simulations give good results.

 

Keywords: Photovoltaic panel (PV); Boost DC/DC converter; Maximum power point (MPP).

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