M. Becherif

Recharging of batteries/supercapacitors hybrid source for electric vehicles application using photovoltaic energy in a stand-alone point

The production of electrical energy by photovoltaic systems is highly dependent on weather conditions. Therefore, this energy should be stored during the day and restored during the night. This paper deals with the storage and generation systems using renewable energy sources. A stand-alone combined system with electrochemical batteries and supercapacitors is considered. The power flow among the different storage devices is controlled in order to optimize the energetic efficiency and avoid irregular working conditions. The battery of electric vehicle is charged using PV electricity. The electrical power produced by the PV can be stored in Lead-Acid battery connected with this PV through a converter. Panels, batteries pack and electrical vehicle energy are modeled and sized.

Influence of wind penetration in the optimization of the economic dispatch

The study of renewable energy takes more importance and an admirable development during these lasts years such as the wind power which takes part to minimize the fuel cost used in the thermal centrals. This paper gives the influence of a wind generator in the optimization of the economic dispatch problem; this wind is included in a distribution network. Two methods are developed to solve this problem, the first is evolutionary represented by the genetic algorithm GA and the second is determinist represented by the interior point IP to confirm the results obtained by the first. A comparison between results obtained before including a wind penetration and after is done to show the deference and the influence of wind penetration.