Buscar
Itens para a visualização no momento 21-25 of 25
Integração de conversores estáticos aplicados a sistemas de iluminação pública
(Universidade Federal de Santa Maria, 2007-12-20)
This work presents a family of integrated electronic ballasts applied to the public lighting system. The electronic ballasts are designed to supply High-Pressure Sodium lamps according to the desired lamp operation ...
Princípio de integração de circuitos de auxílio à comutação: o estudo do caso ZVT
(Universidade Federal de Santa Maria, 2007-12-10)
The main contribution of this Thesis is the proposition of the integration concept of auxiliary commutation circuits applied to systems with several power conversion stages. Trough this concept, the reactive energy resulting ...
Algoritmos heurísticos de otimização da proteção e manobra em redes de distribuição de energia
(Universidade Federal de Santa Maria, 2008-07-29)
The new regulations of the electricity sector have requested from the power utilities great performance
efficiency on their distribution systems, requiring more rigorous quality and continuity energy levels. In Brazil,
the ...
Desenvolvimento de uma família de reatores eletrônicos para lâmpadas de multivapor metálico empregando a técnica de conexão diferencial de conversores CC/CC
(Universidade Federal de Santa Maria, 2009-02-25)
This work presents and analyzes a new family of electronic ballasts to supply metal halide lamps applied to interior lighting systems. These lamps present the best light quality among the high intensity discharge lamps, ...
Contribuição ao controle de máquinas de vibração eletrodinâmicas
(Universidade Federal de Santa Maria, 2009-03-20)
This work presents contributions to the sinusoidal acceleration control of electrodynamic shakers applied in vibration testing. Considering the importance of sine tests to identify critical frequencies of operation and to ...