Avaliação técnico-econômica de um aerogerador de eixo vertical utilizando diferentes tipos de geradores elétricos

Abstract

With the constant increase in the need for electric energy, the use of wind energy emerges as an alternative capable of meeting these demands. Taking into account that several regions of the country have a great potential for wind power, it is necessary to develop technologies and investments to ensure the growth of this energy source. The objective of this project was to study the technical-economical viability of a vertical axis wind turbine, which used a washing machine motor, a servomotor and an alternator for electric power generation, in order to verify which generation system presents better efficiency. In addition, the unit costs of the energy produced in each generation system were determined and compared to the value of the electricity tariff charged by the concessionaire for rural consumers. From the collected data of voltages and electric currents, the power and the wind-mechanical, mechanical-electrical and wind-electric efficiencies of each generator system were calculated, allowing a comparison between these values. The alternator presented the best wind-mechanical efficiency (5.02%) and the best wind-electric efficiency (0.47%). The motor of the washing machine showed the best mechanical-electrical efficiency (11.33%). The results showed that the systems have little efficiency in the generation of electric energy, and the cost of energy generated indicates values much higher than those practiced by the local electric power company.