LINK ORIGINAL: http://www.fpmciencia.org.br/
No Blog Eletrônica de Potência você encontrará informações sobre teses,artigos,seminarios,congressos,tecnologias,cursos,sobre eletrônica potência. “TEMOS O DESTINO QUE MERECEMOS. O NOSSO DESTINO ESTA DE ACORDO COM OS NOSSOS MERITOS” ALBERT EINSTEIN. Imagination is more important than knowledge, for knowledge is limited while imagination embraces the entire world. EL FUTURO SE CONSTRUYE HOY,EL SUCESSO NO ES FRUTO DE LA CASUALIDAD,SE HUMILDE ,APRENDE SIEMPRE CADA DIA.
AUTOR DO BLOG ENG.ARMANDO CAVERO MIRANDA SÃO PAULO BRASIL
"OBRIGADO DEUS PELA VIDA,PELA MINHA FAMILIA,PELO TRABALHO,PELO PÃO DE CADA DIA,PROTEGENOS DO MAL"
sábado, 28 de setembro de 2019
ICT&I reivindicam a continuidade dos incentivos fiscais concedidos pela Lei de Informática
LINK ORIGINAL: http://www.fpmciencia.org.br/
sexta-feira, 27 de setembro de 2019
Seminário Mecanismos de Qualidade no Setor Fotovoltaico MECANISMOS DE QUALIDADE NO SETOR FOTOVOLTAICO 10 agosto de 2018 9h00 às 17h00 Auditório do IEE/USP-BRASIL
MANHA
TARDE
Foi uma grande satisfação ter participado em este brilhante evento a qualidade dos palestrantes e o conteúdo dos temas foi excelente este tema esta vigente cada dia toda vez que o setor fotovoltaico cresce cada dia no BRASIL.
MECANISMOS DE QUALIDADE NO SETOR FOTOVOLTAICO 10 agosto de 2018 9h00 às 17h00 Auditório do IEE/USP - Av. Prof. Luciano Gualberto, 1.289 - Cidade Universitária, São Paulo
O Seminário discutiu questões estruturais que contribuem para promover a qualidade nas instalações fotovoltaicas. Ele será baseado no conceito Quality Infrastructure da Agência Internacional de Energias Renováveis (IRENA) que envolve três mecanismos, que são:
a) Normas e Regulamentação;
b) Certificação de Produtos;
c) Certificação de Pessoas
Os palestrantes convidados são renomados atores chave do Setor Fotovoltaico incluindo a participação internacional do diretor da certificadora americana NABCEP, Shawn O'Brien. O público alvo do evento foi composto por stakeholders e agentes do setor fotovoltaico como concessionárias, seguradoras, instituições financeiras, instituições de ensino, integradoras e fabricantes. PROGRAMAÇÃO
09h00 - Abertura dos Trabalhos Representantes das instituições organizadora do evento (IEE/USP, ABINEE, ABSOLAR, ABGD, ABENS, SENAI/SSCP e GIZ Mecanismos de Qualidade no Setor Fotovoltaico
09h30 - Apresentação do conceito IRENA - Infraestrutura/Mecanismos de Qualidade no Setor Fotovoltaico Roberto Zilles, IEE/USP Normas e Regulamentação
10h00 - ABNT CB-03/IEC 60364-7: Instalações elétricas de baixa tensão: Arranjos Fotovoltaicos Marcelo Pinho, IEE/USP
10h30 - Experiências das Distribuidoras com Geração Distribuída/Sistemas de Compensação Ciceli Martins Luiz, CEMIG
11h00 - Visão das Distribuidoras sobre Geração Distribuída/Sistemas de Compensação Elio Vicentini, ABRADEE
11h30 - Roda de perguntas e discussão em plenário Certificação de Produtos
14h00 - Critérios de Qualidade em Dispositivos de Proteção contra Surto (DPS) para Sistemas Fotovoltaicos Bruno Sacute, Finder
14h20 - Critérios de Qualidade em Cabos Fotovoltaicos Ivan Arca Uliana, Prysmian
14h40 - Critérios de Qualidade em Módulos Fotovoltaicos Gabriel Magdalon, Jinko Solar
15h00 - Roda de perguntas e discussão em plenário Certificação de Pessoas
15h30 - Experiências Internacionais com Certificação de Instaladores de Sistemas Fotovoltaicos Shaw O'Brien, NABCEP, Certificadora nos EUA
16h00 - Certificação de Instaladores de Sistemas Fotovoltaicos SENAI/SSCP no Brasil Fernando Gusmão, SENAI/SSCP e Enio de Oliveira, SENAI/SSCP
16h30 - Roda de perguntas e discussão em plenário.
17h00 - Encerramento
quinta-feira, 26 de setembro de 2019
DESIGN AND IMPLEMENTION OF A THREE PHASE GRID CONNECTED SIC SOLAR INVERTER A THESIS SUBMITTED TO THE GRADUATE SCHOOL OF NATURAL AND APPLIED SCIENCES OF MIDDLE EAST TECHNICAL UNIVERSITY BY MEHMET CANVER
A THESIS SUBMITTED TO THE GRADUATE SCHOOL OF NATURAL AND APPLIED SCIENCES OF MIDDLE EAST TECHNICAL UNIVERSITY BY MEHMET CANVER
ABSTRACT
DESIGN AND IMPLEMENTION OF A THREE PHASE GRID CONNECTED SIC SOLAR INVERTER
Canver, Mehmet M.S., Department of Electrical and Electronics Engineering Supervisor: Prof. Dr. Muammer Ermiş September 2018, 111 pages
In this research work a 30 kW grid connected voltage source three-phase inverter with SiC MOSFET module has been designed and implemented, in order to work with a phase-shifted full bridge (PSFB) maximum power point tracker (MPPT) converter, in such a way that these two converters compose a full system solution. The emergence of commercial SiC based power MOSFETs, which have short turnon and turn-off times, has enabled to increase switching frequency as compared to traditional Si based switching components. This circumstance was one the main motives of this thesis in the scopes of increasing the switching frequency, in order to reduce passive component volumes of inverter such as LCL filter and DC link capacitor volume, decreasing losses which leads to reduce the heat sink volume and having better efficiency. Designed and implemented inverter had been operated in the field with PSFB MPPT converter, energized by 23.75 kW total installed capacity solar arrays. Output characteristics had been investigated, and in the grid connected close loop mode various powers up to 22.32 kW had been transferred into grid. Inverter switching characteristics, drain-source voltage, unfiltered line current and zero voltage switching phenomenon were examined with the change of dead time and output line current. Total harmonic distortion had been recorded at various output powers, and a minimum THD value of 3.84% had been obtained at maximum output power of 22.32 kW. Experimental efficiency values was calculated from various recorded input and output powers. 98.55% peak efficiency at half of rated output power and 98% efficiency at peak output power had been obtained.
Keywords: Three-Phase Grid Connected Inverter, Silicon Carbide, Voltage Source Inverter (VSI), Photovoltaic
LINK:http://etd.lib.metu.edu.tr/upload/12622696/index.pdf
A New Synchronization Technique of a Three-Phase Grid Tied Inverter for Photovoltaic Applications Mohannad JabbarMnati ,Dimitar V. Bozalakov and Alex Van den Bossche1
Figure 1 :The analog circuit of DISM (a) single phase circuit
Figure :The analog circuit of DISM (b) three-phase circuit
A New Synchronization Technique of a Three-Phase Grid Tied
Inverter for Photovoltaic Applications
Mohannad JabbarMnati ,Dimitar V. Bozalakov and Alex Van den BosscheDepartment of Electronic Technology, Institute of Technology Baghdad, Middle Technical University
Three-phase grid synchronization is one of the main techniques of the three-phase grid connected power inverters used in photovoltaic systems. This technique was used to reach the fast and accurate three-phase grid tied inverter synchronization. In this paper a new synchronization method is presented on the basis of integrating the grid voltage two times (line-to-line or phase voltage).This method can be called “double integral synchronization method” (DISM) as it integrates the grid voltage signals two times to generate the reference signals of three-phase photovoltaic inverter currents. DISMis designed and simulated in this paper to operate in both analog and digital circuits of three-phase photovoltaic inverter system with the same topology.The digital circuit design and dsPIC33FJ256GP710A as a microcontroller (the dsPIC33FJ256GP710A with the Explorer 16 Development Board from microchip) was used practically in this paper to generate and control the sine pulsewidth modulation (SPWM) technique according to DISM for three-phase photovoltaic inverter system. The main advantage for this method (DISM) is learning how to eliminate the integration constant to generate the reference signals without needing any reference signals or truth table, just the line-to-line or phase voltage of grid.
LINK:https://biblio.ugent.be/publication/8569474/file/8569476.pdf
quarta-feira, 25 de setembro de 2019
First Emirati astronaut Hazzaa AlMansoori and team enter ISS, make history for United Arab Emirates
UAE makes history with the launch of Hazzaa AlMansoori to space. The Soyuz spacecraft carrying him and two other astronauts had blasted off to the International Space Station from Baikonur Cosmodrome in Kazakhstan. The spacecraft successfully docked at ISS in about 6 hours after blast off and the Emirati austronaut and other crew members entered International Space Station. Here's how the events unfolded. AlMansoori is set to participate in the Station's ongoing scientific missions. He'll observe the effect of microgravity and conduct 15 experiments designed by UAE school students, selected from the MBRSC's "Science in Space" competition. Back on Earth, those students will also conduct those same experiments to compare the results with those done in space. And AlMansoori has plenty of material that he'll be taking with him.
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