Buscar
Itens para a visualização no momento 31-40 of 83
Avaliação dos serviços de pós-graduação lato sensu sob a perspectiva do aluno concluinte para melhoria contínua
(Universidade Federal de Santa Maria, 2006-12-05)
This work aims to raise the performance of the courses in post-graduation of lato-sensu level of an Institution of Higher Education by the perspective of the students about to conclude the course, planning to identify ...
Modelo de gerenciamento para as micro e pequenas empresas da região central do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2006-02-13)
The success of MPE's (small companies) are intimately linked to the success of the national economy, and it is one of the determinant variables of the maintenance and the growth of a country. In that context, it was noticed ...
Método de sincronização aplicado a conversores PWM trifásicos
(Universidade Federal de Santa Maria, 2006-07-17)
In the last decade, disturbances in the electrical system have been increased, mainly due to proliferation of nonlinear loads. As a result harmonic distortion, voltage unbalance and frequency variations are becoming a ...
Desenvolvimento e implementação de uma micro-rede avançada de alta freqüência para integração de fontes alternativas de energia
(Universidade Federal de Santa Maria, 2006-03-17)
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 ...
Contribuição ao estudo da máquina assíncrona trifásica duplamente alimentada aplicada a aerogeradores de velocidade variável
(Universidade Federal de Santa Maria, 2006-07-28)
This work presents the analysis and implementation of a vector control applied to Doubly-Fed Induction Generators (DFIG) used in grid connected wind turbines. DFIG s are
nowadays the more widely used concept for grid ...
Sistema para aproveitamento de energia vibracional baseados em transdutores acústicos piezelétricos de baixo custo
(Universidade Federal de Santa Maria, 2006-03-08)
This dissertation presents the development of a system for converting the mechanical energy from vibrations into electrical energy. The conversion is performed in a low-cost piezoelectric transducer, commonly known as ...
Avaliação da habitação de interesse social na cidade de São Gabriel
(Universidade Federal de Santa Maria, 2006-12-15)
The present work aims at analyzing the development f conjuntos habitacionais of social interest built in the city of São Gabriel, R/S, through the methodology of post occupation assessment, APO , including the elaboration ...
Avaliação dos critérios do plano de participação nos lucros por meio de indicadores de desempenho
(Universidade Federal de Santa Maria, 2006-02-22)
The present study focuses on the research and evaluation of a profit- and/or result-sharing plan (PRSP) applied during 7 years at the CERTHIL Company. Multi-variable and descriptive analyses were the methods used. The ...
Avaliação da qualidade da água sob impacto das atividades de implantação de garimpo no município de São Martinho da Serra
(Universidade Federal de Santa Maria, 2006-02-22)
This research was developed to evaluate the quality of waters under to the artisanal mining (garimpo) impact in a catchment, at the headwater of Ibicuí-Mirim River, in São Martinho da Serra - RS. The catchment area is 33.12 ...
Metodologia de projeto de conversores boost para correção de fator de potência apliocada a sistemas ininterruptos de energia
(Universidade Federal de Santa Maria, 2006-04-20)
This Master Thesis presents a design methodology to a boost PFC converter operating as an Uninterruptible Power Supply rectifier input stage. This methodology defines, making use of a group of current ripples and switching ...