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

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.

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

UPS IGBT RECTIFIERS dq-based individual phase control of three-phase four-wire PWM rectifier for UPS Kim,Seung Ho Dept. of Electrical Engineering Graduate School of Industry and Engineering Seoul National University of Science and Technology

LINK
http://www.mediafire.com/view/t3nf6wyakpi647w/IGBT_RECTIFIER-2014.pdf

IEE USP-INSTITUTO DE ENERGIA DA UNIVERSIDADE DE SÃO PAULO APRESENTA GONIOFOTÔMETRO E ESPECTRORADIÔMETRO

EM JULHO O IEE USP -INSTITUTO DE ENERGIA E AMBIENTE DA UNIVERSIDADE DE SÃO PAULO BRASIL INAUGUROU OFICIALMENTE SEU SISTEMA AUTOMATIZADO DE MEDIÇÃO GONIOFOTOMÉTRICA E ESPECTRORADIÔMETRICA ,COMPOSTO PELO GONIO FOTÔMETRO LGS 1000 E ESPECTRORADIÔMETRO CAS 140 CT-156 FABRICADOS PELA EMPRESA ALEMÃ INSTRUMENT SYSTEM.O VALOR INVESTIDO E DE APROXIMADAMENTE 165000 EUROS.
FONTE ORIGINAL
REVISTA ELETRICIDADE MODERNA ARANDA EDITORA ANO43 N°497
AGOSTO 2015
http://www.arandanet.com.br/midiaonline/eletricidade_moderna/2015/agosto/index.php