http://www.bodospower.com/restricted/download.aspx
"OBRIGADO DEUS PELA VIDA,PELA MINHA FAMILIA,PELO TRABALHO,PELO PÃO DE CADA DIA,PROTEGENOS DO MAL"
“SE SEUS PROJETOS FOREM PARA UM ANO,SEMEIE O GRÂO.SE FOREM PARA DEZ ANOS,PLANTE UMA ÁRVORE.SE FOREM PARA CEM ANOS,EDUQUE O POVO.”
“Sixty years ago I knew everything; now I know nothing; education is a progressive discovery of our own ignorance. Will Durant”
quarta-feira, 23 de setembro de 2015
terça-feira, 22 de setembro de 2015
Workshop: A Qualificação Profissional e Formação de Mão de Obra para Atendimento da Demanda de Instalações de Geração Distribuída com Sistemas Fotovoltaicos 22 setembro 2015 9h00 às 17h30 Auditório Oswaldo Fadigas Fontes Torres - STI/USP - Av. Prof. Luciano Gualberto, travessa 3, n. 71 - Cidade Universitária, SP
domingo, 20 de setembro de 2015
A Study on High Quality Single-Phase Seven-Level Grid-Connected Inverter Department of Electrical Engineering Graduate School, Chonnam National University- Le Tuan Vu
A Study on High Quality Single-Phase Seven-Level Grid-Connected Inverter
Department of Electrical Engineering Graduate School, Chonnam National University
Le Tuan Vu
A DISSERTATION SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIRIMENTS FOR MASTER OF ENGINEERING IN ELECTRICAL ENGINEERING
(Abstract)
Multilevel inverter technology has emerged recently as a very important alternative in the area of high-power medium-voltage energy control. Multilevel inverters include an array of power semiconductors and capacitor voltage sources, the output of which generate voltages with stepped waveforms. The commutation of the switches permits the addition of the capacitor voltages, which reach high voltage at the output, while the power semiconductors must withstand only reduced voltages. There are three commonly topologies have been proposed for multilevel inverters: diode-clamped (neutralclamped); capacitor-clamped (flying capacitors); and cascaded multicell with separate dc sources. The most attractive features of multilevel inverters are that they can generate output voltages with extremely low distortion, they draw input current with very low distortion and they can operate with a lower switching frequency. In this paper, a new type of the multilevel single-phase grid-connected inverter is proposed. Like other multilevel inverters, the proposed inverter has fully all the features of the multilevel inverters but has less number of switches than the ones of three types of commonly multilevel inverter with the same number of levels output voltage. The operational principle and the switching functions are analyzed in this paper. To verify the performance of the proposed inverter, PSIM simulation and experimental results are also shown in this paper.
sábado, 19 de setembro de 2015
Diseño de Circuitos Eléctricos Subestaciones y Plantas de Energia- Yu Balakov, M.Sh. Misrikhanov, AV Shuntov
El estudio metódico y selección de los principales esquemas de los circuitos de las subestaciones y plantas de energía, incluyendo las características de diseño, métodos y criterios para la toma de decisiones, la creación de diagramas de bloques y diagramas del equipo eléctrico, y una selección de aparatos eléctricos y conductores. Para los estudiantes de universidades especialidades de electricidad, ingeniería y personal técnico de diseño de los sistemas de energía y de los institutos técnicos.
LINK FILE DJVU
http://www.mediafire.com/download/ahj5au47bj8oga7/Proektir_shem_el_ustanovok.djvu
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