Valencia, G.A, S. M. Campo L. Angel, Pontificia Bolivariana University, M. O. Oliveira IEEE Member, R. W. Orellana Paucar, Osinergmin
This project is designed and implemented an industrial application for quality control of the label in metal containers. The application integrates an industrial robot Gryphon, a vision system and a transportation system with band. It performs the position control algorithm for robot using walli3 software. The vision system consists of a color camera and image processing to identify defects in metal containers label using the OpenCV libraries. The application developed has great performance and will make known to the region industry the potential of the industrial robotic as an alternative in the automation of its process.
M. O. Oliveira, IEEE Member, D. A. C. Lima, UFRGS University, L. A. Walantus, UFRGS University, O. E. Perrone, UNaM University, A. S. Bretas, IEEE Senior Member, R. W. Orellana Paucar, Osinergmin
Over the last years the cost increase, limited reserves, and adverse environmental impact of fossil fuels, and the governmental incentives have made that the wind energy to be one of the fastest growing renewable energy sources. In this context, this paper presents a brief explanation theoretical about modeling and operation characteristics of the main Induction Generators (IG) used in wind generators. It is presenting a theoretical study of Squirrel-Cage IG, Self-Excited IG and Doubly Fed IG.
E. J. Toledo, UNaM University, M. O. Oliveira, IEEE Member, O. E. Perrone, UNaM University, J. H. Reversat, UNaM University, R. S. Orellana Paucar, Osinergmin
Ferroresonance is a phenomenon usually initiated by transients in power networks resulting from e.g. switching operations or ground faults. Non linear behavior of the core of an inductive voltage Transformer results in magnetic saturation. In this context, this paper presents the numerical simulation developed with ATP/EMTP software on the ferroresonance phenomenon in inductive voltage transformer to metrological use. The analyzed results arise from the interaction between the applied voltage transformer and the shunt capacitance of the switch. The results show the influence of these variables on the phenomenon of ferroresonance.
M. O. Oliveira, IEEE Member, A. S. Bretas, IEEE Senior Member, O. E. Perrone, UNaM University J. H. Reversat, UNaM University, H. E. Muñoz, UNaM Univeristy, R. S. Orellana Paucar, Osinergmin
Abstract Constant switching occur in transformers due to imbalances between power generation and load served. This fact generates a magnetizing transient current on the transformer called “inrush current” resulting in numerous problems. Thus, this paper addresses the basictheoretical study of inrush currents and shows its influence in the transformer protection systems. Moreover, it also presented a list of major works that address this transient phenomenon.
M. O. Oliveira, A. S. Bretas, F. H. García, L. A. Walantus, H. E. Muñoz, O. E. Perrone and J. H. Reversat
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.
M. O. Oliveira, J. M. Neto, M. C. Inocencio, O. H. Ando Junior, A. S. Bretas and O. E. Perrone
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%.
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.