Controlador de carregamento de baterias para turbinas eÃlicas de pequeno porte

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

Electric energy is considered noblest of the forms of currently available secondary energy. It is difficult to imagine modern society without the advent of the electric energy and the ease and comfort it has brought. The technological advances that humanity has made throughout time have greatly contributed to the control and use of electric energy. In the electrification of remote places where the access to the conventional electric grid is difficult and where installation and maintenance costs are prohibitive or impracticable, the solutions from renewable energy sources and in particular from wind energy techniques have proved to be economically viable. For such applications, the use of small wind turbines had been a solution for taking care of the communities that are distant from the great urban concentrations and centers for generation of electricity. The proposal of this work is to project and implement a prototype of a Charge Controller for Small Wind Turbines. This Controller will have to make possible the recharging of a battery bank that is inserted in the system, in such a way as to guarantee the stability of voltage in a reliable and economically viable form, and one that can feed DC or DC/AC charges. The present Work was developed for a WG910 Wind Turbine with nominal power rating of 100Watts, manufactured by the Marlec Company, whose electric characterization was carried out in groups of battery bank test experiments. The main focus of this work was on the conception of a Battery Circuit Charger Controller that would control the load flow to the battery and also carry out the supervision of load charge/discharge conditions. The results obtained showed, with the advent of the Voltage Double Circuit, that starting from a wind speed of 5m/s there would be enough energy for promoting battery charge, whereas, without the cited Circuit, the electric energy would only be available starting from of 8m/s. The economic viability study, of the Battery Charge Controller Circuit implementation, showed that the one being used in the city Olinda-PE, with a WG910 Wind Turbine, produced the same amount of energy, in one year, as three normal Turbines, at 30% of the cost of one

ASSUNTO(S)

wind energy small wind turbines controlador de carga turbinas eÃlicas de pequeno porte charge controller energia eÃlica engenharia mecanica

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