EZATEC SISTEMAS DE ENERGIA na FIEE 28°FEIRA INTERNACIONAL DA INDUSTRIA ELÉTRICA ,ELETRÔNICA,ENERGIA E AUTOMAÇÃO 23-27 MARÇO/2015 SÃO PAULO BRASIL

Fundada desde 1997,  a empresa Ezatec  vem atuando no mercado de proteção de energia, oferecendo  soluções , experiência, conhecimento e serviços adequados  priorizando  na qualidade , compromisso e excelência, transparência no atendimento direto ao cliente, fornecedores  e colaboradores  diretos  ou indiretos.

A Ezatec hoje , está equipada  com uma estrutura de 1000 metros quadrados de área construída  e espaço  suficiente com todas as ferramentas necessárias e toda infraestrutura informatizada, garantindo  precisão  nos testes de qualidade  dando maior segurança nos produtos e serviços à seus clientes.

Comercialização de No Breaks de médio e grande  porte e atuando em nível nacional.

Contamos  com uma equipe de técnicos especializados  e Engenharia   com mais de 20 anos  de experiência em No Breaks,  temos  laboratório de teste  e equipamentos  de medição de ultima geração.

Venha visitar o nosso stand e conheça toda a nossa linha de produtos:

Nobreaks,Estabilizadores de tensão,Transformadores  e muitos outros.

STAND  E230

WEBSITE EZATEC :http://www.ezatec.com.br

WEBSITE FIEE: http://www.fiee.com.br/en/Exhibitors/525594/EZATEC

PESQUISADORES DE ELETRÔNICA DE POTÊNCIA DO GEPEC Universidade Federal do Ceará BRASIL PARTICIPAM NO APEC 2015 -Applied Power Electronics Conference and Exposition Charlotte Convention Center, Charlotte, NC, March 15 - 19, 2015.

BRASIL PARTICIPA COM UM BRILHANTE GRUPO DE PESQUISADORES DE
ELETRÔNICA DE POTÊNCIA DO Grupo de Processamento de Energia e Controle do Departamento de Engenharia Elétrica da Universidade Federal do Ceará.
OS DISTINGUIDOS DOUTORES E ENGENHEIROS:
Pedro Henrique Almeida Miranda, Davi Joca,Paulo Praca ,Dalton Honório ,Tobias Rafael,Bruno Almeida.
Eu tive a honra de trabalhar com muitos de eles no GEPEC ,quando a MICROSOL de Fortaleza CEARA ,tinha convenios com a Universidade Federal do Ceará,DESEJO A ELES MUITO SUCESSO.

electronica 2014: Messeneuheiten rund ums Auto und Elektromobilität

Design & Implementation of Parallel Operation of Inverters with Instantaneous Current Sharing Scheme Using Multiloop Control Strategy on FPGA Platform by Shahil Shah -Department of Electrical Engineering Indian Institute of Technology, Kanpur

Abstract
 In these days of acute shortage of conventional energy resources, the harness of renewable energy has received considerable attention. In general, power obtained from Renewable Energy Sources(RES) is not of the form which is directly deliverable to the AC load or the utility grid. Voltage Controlled Voltage Source Inverters (VCVSI) forms the interface link which conditions power to the form deliverable to grid or load. To modularize the system, instead of a single inverter, the use of number of parallel inverters of reduced rating is proposed. The parallel operation of inverters in RES system o ers advantages like reliability and redundancy in addition to the low maintenance cost of a low power unit compared to that of high power unit. However there is a need of control strategy to strictly hold the amplitude, phase and frequency of output voltages of inverters at the same values in order to avoid circulating currents through inverter modules and make them share load currents equally even during transients. In this thesis work a control scheme is proposed and implemented for paralleling of three phase inverters which enables the inverters to share load currents equally even during transients (instantaneous current sharing), and also track the sinusoidal voltage reference. This voltage reference is either free running or is derived from grid voltage so as to feed AC load or to synchronize the module with any utility grid. The design issues for designing of multiloop control structure are analyzed at length with the discussion of active damping to increase the damping and relative stability of system. Design of outer current sharing controller has been done and its design intricacies are included in the work. FPGAs can be used to control power electronic systems. They have advantages like high speed, parallel processing capability, and rich digital I/O interface. In this thesis, basic modules required for development of controllers for power electronic systems are developed and tested with standard signals. The proposed control scheme for parallel operation is implemented for two 3-phase inverters using this FPGA platform.
 LINK ORIGINAL

http://shahilshah.weebly.com/uploads/4/4/6/5/4465384/shahil_report.pdf

David Perreault - Powerful Circuits: Developments in High Frequency Power Electronics

  Powerful Circuits: Developments in High Frequency Power Electronics Electrical energy is the cornerstone of our technological infrastructure, and its use pervades our society. Energy-processing circuits -- or power electronics -- are central to our ability to efficiently create, manipulate, and utilize electrical energy. Advances in this area are becoming vital, both for addressing the growing energy challenges we face and for extending our control over the world around us. A challenge of particular importance is the miniaturization of power circuits. Likewise, advances in the performance of power electronics -- including efficiency, control bandwidth, and operating range -- are essential to reducing energy consumption and increasing functionality in myriad applications.
 This talk describes ongoing research at MIT that seeks to address the twin challenges of miniaturization and performance of power electronics. New system architectures and circuit designs are introduced that enable dramatic increases in switching frequencies (e.g., into the 3-300 MHz range). Higher frequencies are desirable because they reduce energy storage requirements, but necessitate circuit designs that either compensate for or utilize device parasitics. Furthermore, design approaches for integrated power devices and magnetics are introduced that scale well to small sizes and high frequencies and enable improved integration. Experimental results from power converters operating at frequencies to beyond 100 MHz are presented to illustrate these emerging technologies.