Design and Analysis of Brushless Self-Excited Three-Phase Synchronous Generator

M. O. Oliveira, A. S. Bretas, F. H. García, L. A. Walantus, H. E. Muñoz, O. E. Perrone and J. H. Reversat

Abstract.
This paper presents the main features of design, construction,performance analyses and experimental studies of a brushlessself-excited three-phase synchronous generator. The basic construction, principle of operation, and exciting characteristics are described. In proposed machine the rotor winding is shorted through diodes and the self-excitation is reached by a slip between rotor and stator winding built with different pole numbers. Computer simulations performed with MATLAB® software were used to verify the mathematical model of the brushless self-excited synchronous generator and the achieved results showed similar behavior with experimental values.

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Viability Study for Use of Rice Husk in Electricity Generation by Biomass

M. O. Oliveira, J. M. Neto, M. C. Inocencio, O. H. Ando Junior, A. S. Bretas and O. E. Perrone

Abstract
This paper presents the main technical and economic issues related to the study of a rice husk small-scale thermal power generation from a Southern Brazilian Rice Processing Cooperative Agriculture. In this study, a case study energy cogeneration associated with rice processing is presented with the estimated cost of operation and maintenance of a small pilotplant. It is also considered the impact of carbon credits sale inflow funds, which can reduce production costs related to
electricity consumption. It will be presented also that the possibility of selling carbon credits, increases the project economic viability by 50%, allowing a reduction in the investment return time by 20%.

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Biomass Electricity Generation Using Industry Poultry Waste

M. O. Oliveira, R. Somariva, O. H. Ando Junior, J. M. Neto, A. S. Bretas,O. E. Perrone, and J. H. Reversat

Abstract: This work presents study details of a biomass based electricity generation project. The biomass used was industrial poultry litter. The objective of the work is to contribute to the research of poultry waste use in real life applications. In this sense, a case study is presented. The case study is an aviary industry region of southern Brazil, where is evaluated the technical and economic characteristics of power generation using biomass obtained from poultry litter. Still, it is highlighted the large energy potential and the high poultry litter production in the region, which translates into a important source of raw material for electricity generation, currently not highly explored in Brazil.

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