This thesis analyzes the monthly data from historical series of the heat stroke cycles, solar radiation and average wind speeds in the 1961 and 2008 period to identify long-term inaccuracies in the location of both wind ...

This thesis presents the study and characterization of organic light-emitting diodes (OLEDs) with the proposal of obtaining an equivalent model that is useful in the OLED driver design and in lighting systems projects. ...

This doctoral thesis presents the development of sensorless methods aiming the rotor speed control of asymmetrical two-phase induction motors. Initially, the machine mathematical model is presented. From the machine model, ...

This Ph.D. Dissertation presents contributions to the study of hybrid multilevel systems, analyzing several issues that compose this system, such as: topological variations of the output inverter stage and input rectifier ...

The distribution system is an extremely important part of the energy supply. At the same time, distribution networks, most of them with radial configuration, are much more vulnerable elements compared with transmission and ...

This work presents a study and analysis of photovoltaic systems subject to partial shading, where the main consequence is the reduction of its energy production. To mitigate this problem, it is proposed a new photovoltaic ...

This thesis presents two new routing problems, both with objective functions focused on relative positioning of teams during the routing horizon. The relative positioning results in temporal and spatial dependencies among ...

This thesis proposes an Intelligent Alarm Processor for fault diagnosis in electrical power systems. The objective is to develop a methodology for automatic fault analysis using reported alarms from Supervisory Control and ...

This Thesis presents a distributed generation system, which works as a Microgrid, suitable to integrate alternative energy sources, using a high frequency AC link (HFAC) as a means of connecting sources and loads. The ...

This doctoral thesis deals with the study, analysis and development of a new hybrid topology for voltage regulation of stand-alone microgeneration systems employing self-excited induction generators. The hybrid topology ...