The integrated operation and design of the DC distribution systems combined wind turbine and photovoltaic power systems Shin,Soo Cheol Department of Electrical and Computer Engineering Sungkyunkwan University

( Abstract )
 Because DC distribution system has more numerous advantages than AC distribution system, aircraft and ships have been applied to the DC distribution system. because consumer and office equipment consisting of the electronic systems use DC power, the power can be easily supplied to the load using simple power conversion system. especially, high efficiency power transmission is possible because the power conversion step supplying the power to the electronic load is small in DC distribution system. however, due to the power grid of land consisting of AC power grid, most of the land power system are applied to the AC distribution system except for special cases such as IDC(Internet Data Center) and etc. In this paper, design and control method of DC distribution system which can be connected with AC distribution system of land is proposed. In addition, it proved that the connection of renewable energy can be more easily connected with DC distribution system than AC distribution system by connecting DC distribution grid with renewable energy such as wind power of PMSG type and photovoltaic system through the simulation and experiment. Three-phase AC/DC PWM converter can supply DC 380[V] to the DC bus in case that AC power distribution voltage is AC 220[V]. however, because the secondary side of the transformer consists of Y connection and 380[V] in most of the commercial building, in order to configure a DC distribution system, it is boosted to DC 700[V] using three-phase AC/DC PWM converter. And then, the DC distribution system of DC 380[V] was constructed using non-isolated bidirectional DC/DC converter. In this paper, considering the stable operation of DC distribution system, three control algorithm and a topology of DC distribution system were proposed. And a thermal model was proposed to simulate the heat of the semiconductor in PSIM software. Also, it proved that generated power can be easily connected to DC distribution grid by connecting DC distribution system with renewable distributed generation systems such as wind power and photovoltaic system. First, parallel control method is proposed for 50[kW] voltage source DC/DC power converter. Traditionally, parallel operation of two converters has been used to method which commonly combined voltage source converter with current source converter. The reason is that voltage source power converter has very small impedance to the output capacitor. Therefore, excessive inrush current occur and it cause destruction on the power converters when two voltage source converters are connected each other. Also, traditionally parallel operation method of combining voltage source converter with current source converter has disadvantages of a stop for whole systems when voltage source converter has broken. The reason is that voltage source converter is only possible to control the voltage of DC bus. Also, voltage and current source converter have to be designed respectively to operate parallel systems. In order to solve this problem, this paper proposed control algorithm that can connect two voltage source converters in parallel. Hardware parameters of two voltage source converter are equally designed and it is separated to main system and slave system in control aspects. The main system control the voltage of DC bus and slave system performs power control to share loads of the main system. Because the hardware is equal, slave system is able to perform the role of the main controller when the main system is broken. Therefore, the proposed method has advantage of improved reliability. Second, in DC distribution system, bidirectional DC/DC converter is unnecessary in case that AC input voltage is 220[Vrms]. The reason is that three-phase AC/DC PWM converter is available to supply 380[V] to DC link. Therefore, this paper proposed a novel multi-parallel control algorithm of voltage source three-phase AC/DC PWM converter having the same structure in DC distribution system with three-phase AC/DC PWM converter only.
FULL THESIS:
https://copy.com/kZbi0viAordBS0ci

REVISTA POTENCIA EDIÇÃO DIGITAL ONLINE

LEIA ONLINE
http://issuu.com/hmnews/docs/edicao-115

FORUM POTENCIA SÃO PAULO 23 JULHO 2015 BRASIL AUDITORIO AMARELO EXPO CENTER NORTE

NBR 5410 em discussão no Fórum Potência São Paulo O professor e consultor Hilton Moreno, também diretor da Revista Potência, é o autor da última palestra desta edição do Fórum: “Panorama da situação das instalações elétricas no Brasil e situação da revisão da norma NBR 5410”.

Sindicel no Fórum Potência Valdemir Romero, diretor do Sindicel, aborda o tema “Segurança em edificações existentes construídas há mais de 15 anos” em sua palestra. O Sindicel (Sindicato da Indústria de Condutores Elétricos, Trefilação e Laminação de Metais Não-Ferrosos do Estado de São Paulo) é uma entidade fundada em 1979, que conta em seu quadro de filiados com os principais fabricantes de fios e cabos elétricos, de telecomunicações e de produtos semimanufaturados (chapas, tiras, tubos e outros).

Procobre no Fórum Potência São Paulo Alberto Fossa, consultor do Procobre Brasil, apresenta a palestra “Sistema de gestão de energia – Aspectos da implementação da ISO 50001”. O Procobre – Instituto Brasileiro do Cobre é uma instituição sem fins lucrativos, patrocinada por empresas produtoras e transformadoras de cobre, que tem como objetivo estimular o uso técnico e econômico do cobre, promovendo sua utilização correta e eficiente. No Brasil, o Procobre representa a International Copper Association (ICA), uma organização líder mundial na promoção do cobre.

BRVAL no Fórum Potência Alexandre Morais, especialista da BRVAL, apresenta a palestra intitulada “Vantagens na padronização de cubículos blindados para medição de energia de clientes em média tensão”. Empresa 100% nacional, instalada no estado do Rio de Janeiro, a BRVAL tem como missão planejar, desenvolver, produzir e comercializar equipamentos elétricos com qualidade e eficiência, satisfazendo a expectativa dos clientes. A BRVAL oferece ao mercado soluções em: Subestações blindadas, Painéis TTA/PTTA, Disjuntores com proteção on-board e Painel de proteção secundária.

Soprano no Fórum Potência São Paulo A primeira palestra do dia é ministrada por Júlio Bortolini, especialista da Soprano. Ele fala sobre o tema “Proteção de sistemas elétricos: disjuntores, DR e DPS”. Com 60 anos de história, a Soprano busca desenvolver suas ações sempre com foco nas necessidades de cada cliente. A empresa oferece soluções para diversos segmentos de mercado, produzindo um amplo mix de produtos através de quatro divisões de negócios: Construção Civil, Hidráulica, Materiais Elétricos e Utilidades.

Fisica Universitaria 12va. Edicion Sears, Zemansky Vol. 1 by Sears, Zemansky

LINK LIBRO ACCESO GRATUITO EN LA WEB
https://archive.org/details/FisicaUniversitaria12va.EdicionSearsZemanskyVol.1

Analisis de circuitos en ingenieria Willian H Hayt Jr Jack E Kemmerly Steven M Durbin by Willian H Hayt Jr Jack E Kemmerly Steven M Durbin

LINK ORIGINAL LIBRO GRATUITO
https://archive.org/details/AnalisisdecircuitoseningenieriaWillianHHaytJrJackEKemmerlyStevenMDurbin

P.S.Bimbhra , Power Electronics

QuickField Webinar: Electric Transformers simulation

A Comprehensive Study of Dual Active Bridge Converter and Deep Belief Network Controller for Bi-directional Solid State Transformer - Kim, Sul-Gi School of Electrical and Computer Engineering (Electrical Engineering)

A Comprehensive Study of Dual Active Bridge Converter and Deep Belief Network Controller for Bi-directional Solid State Transformer - Kim, Sul-Gi School of Electrical and Computer Engineering (Electrical Engineering)

 Ulsan National Institute of Science and Technology-KOREA

 ABSTRACT
This dissertation presents a comprehensive study of Dual Active Bridge (DAB) converter and
Deep Belief Network (DBN) controller for bi-directional Solid State Transformers (SSTs).
The first contribution is to propose a dc-dc DAB converter as a single stage SST. The proposed
converter topology consists of two active H-bridges and one high-frequency transformer. Output
voltage can be regulated when input voltage changes by phase shift modulation. Power is transferred
from the first bridge to the second bridge. It analyzes the steady-state operation.
The second contribution is to develop an average model for dc-dc DAB converters. The
transformer current in DAB converter is purely ac, making continuous-time modeling is difficult.
Instead, the proposed approach uses the only 1st order terms of transformer current and capacitor
voltage as state variables.
The third contribution is the controller design of a dc-dc DAB converter. The PI gains are allowed
to vary within a predetermined range and therefore eliminate the problems from the conventional PI
controller. The performance of the proposed artificial intelligence gain scheduled PI controller is
simulated and compared with the conventional fixed PI controller under steady state error,
responding time and load disturbances.
The experimental system of DAB converter is implemented using digital signal processing unit,
Texas Instrument TMS320F28335 control board, to examine and verify the performance of the
proposed controller under various operating conditions. Simulation and experimental results show a
good improvement in transient as well as steady state response of the proposed controller. However,
power efficiency, computation burden and complexity of algorithm are disadvantage of proposed
algorithm.

Power Your Life Seminar Brazil ST

FOI REALIZADO COM MUITO EXITO PELA EMPRESA ST Power Your Life Seminar Brazil NOS DIA 3 MARÇO DE 2015 O PROGRAMA DO CURSO FOI

DEVO AGRADECER O CONVITE AO ENGENHEIRO ROGERIO BUENO DA ST E PARABENIZARLO POR SUA BRILHANTE EXPOSIÇAO JUNTO COM TODOS OS DEMAIS PALESTRANTES.

COMO PARTE DO MATERIAL DO SEMINARIO APRESENTOU UM DOS TEMAS
MAIS NOVEDOSOS

Primary side sensing techniques: design issues and implementation
Autor: Jianwen Shao

LINK AO ARTIGO COMPLETO EM PDF :
https://copy.com/8YskwkuocttxJcko

SIMULATIONS OF THREE-PHASE full-wave Controlled Rectifier WITH PSPICE

SIMULATIONS OF FLYBACK CONVERTER WITH PSPICE

APRESENTOU A VOCES A SIMULAÇÃO DE UN TIPICO FLYBACK CONVERTER CON O SIMULADOR PSPICE ,MUITO CONHECIDO PELOS ESTUDANTES E ENGENHEIROS ELETRICOS E ELETRÕNICOS ,ESTE CIRCUITO E USADO EM TODAS AS FONTES DE UPS
TAMBEM COMO FONTE DE ALIMENTAÇÃO DE ALTA FREQUENCIA DE MUITOS CIRCUITOS ELETRÕNICOS,NATURALMENTE PREVIAMENTE TEM QUE DISENHARSE OS VALORES DOS COMPONENTES USANDO FORMULAS O MEDIANTE O PROGRAMA MATHCAD.
MUITAS PESSOAS NÃO GOSTAM DO PSPICE PORQUE MUITAS VECES DA FALHA DE CONVERGENCIA,MAIS EXISTEM DICAS  E MACETES QUE NOS PEMITEM SIMULAR QUALQUER CIRCUITO SEM PROBLEMA.

SE VOCE E UM BOM OBSERVADOR VERIFICARA QUE O PINO4 DO CIRCUITO INTEGRADO DE CONTROLE PWM DE CORRENTE SG1844 NÃO ESTA CONECTADO ,POR ISSO ELE TEM UM CIRCULO VERDE QUE APARECE APOS A SIMULAÇÃO DO CIRCUITO.
ENTÃO  COMO VAMOS DEFINIR A FREQUENCIA DO CIRCUITO SE NOS NÃO PODEMOS CONECTAR O CIRCUITO RC AO PINO4 DO INTEGRADO,MUITO SIMPLE SE FAZEMOS UM CLIK COM O MOUSE ACIMA DO CIRCUITO SG1844 ,APARECERA UMA NOVA FIGURA COMO A SEGUINTE COM AS PROPIEDADES DO CIRCUITO INTEGRADO AQUI VAMOS CONFIGURAR O TEMPO MORTO (DEAD TIME) E A FREQUENCIA DE CONMUTAÇÃO DO MOSFET ( PERIODO=T seg)
NESTE CASO COLOCAREMOS:
DEAD TIME = 2e-6
PERIODO = 25 us ( internamente 25us mais na saida do circuito vamos ter T=50us ou f=20khz para disparar o MOSFET ,voces podem verificar pessoalmente esta dica. )

E MUITO IMPORTANTISSIMO A CONFIGURAÇÃO  DO PARAMETRO K LINEAR QUE FAZ O ACOPLO MAGNETICO ENTRE OS INDUTORES L1,L2,L3,L4.L5.L6 ,NORMALMENTE SE USA COMO COEFICIENTE DE ACOPLAMENTO  COUPLING=0.998.

O SUCESSO DA SIMULAÇÃO DO CIRCUITO VAI DEPENDER DO CORRETO DISENHO
ELETRICO DO CIRCUITO,LEMBRANDONOS QUE EN TUDO CIRCUITO FLYBACK AS BOBINAS DO PRIMARIO E AS BOBINAS DO SECUNDARIO ESTÃO EM CONTRAFASE DESFASADAS 180° GRADOS.
OBSERVE QUE AS BOBINAS TEM NOS TERMINAIS OS PONTOS 1 (INICIO DA BOBINA)E PONTO 2 (FIM DE BOBINA)

TRANSFORMADOR ESPECIAL 50KVA -ENTRADA TRIFASICA 220VAC(rms) FASE-FASE/SAIDA MONOFASICA 220VAC(rms)FASE-FASE

UM TRANSFORMADOR ESPECIAL NA INDUSTRIA E APRESENTADO NA SEGUINTE
SIMULAÇÃO ONDE A ENTRADA E TRIFASICA E A SAIDA MONOFASICA.
A SOLUÇÃO E APRESENTADA COMO 03 TRANSFORMADORES MONOFASICOS COM RELAÇÃO DE TRANSFORMAÇÃO (2:1) DE PRIMARIO A SECUNDARIO.

A Method to Import PSpice Models into OrCAD LT.Cdr.Krisada Sangpetchsong Lecturer

LINK FULL PAPER
https://copy.com/0BKaa4arS2t7kwP4

Industrial Power Engineering and Applications Handbook K.C. Agrawal

LINK ORIGINAL EN LA WEB
http://dl1.taghedanesh.com/Books/Electrical/125681.pdf
LINK
https://copy.com/8tHXoEwDbLVpPAgI

High-power picosecond electronics G.A. Mesyats a, M.I. Yalandin b a Lebedev Physics Institute, Russian Academy of Sciences, Moscow, Russia b Institute of Electrophysics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russian Federstion

High-power picosecond electronics
G.A. Mesyats
P.N. Lebedev Physics Institute, Russian Academy of Sciences,
Leninski|¯ prosp. 53, 119991 Moscow, Russian Federation
Tel. (7-095) 135-24 30. Fax (7-095) 952-50 81
E-mail: mesyats@pran.ru
M.I. Yalandin
Institute of Electrophysics, Ural Branch of the Russian Academy of Sciences,
ul. Amundsena 106, 620016 Ekaterinburg, Russian Federation
Tel. (7-343) 267-87 85. Fax (7-343) 267-87 94
E-mail: yalandin@iep.uran.ru
This paper reviews current research in high-power picosecond electronics, a branch of experimental engineering physics which critically
depends on national priority research projects for its dynamic development. The aim of the review is basically to show progress in the
study of picosecond processes involved in the accumulation, commutation and transformation of high-density electric power. Examples
are presented to demonstrate what the latest built high-voltage picosecond facilities will potentially fundamentally contribute to
developments in generating unique-property high-power electron beams and electromagnetic radiation pulses.
LINK DOWNLOAD FULL PAPER
http://ufn.ru/en/articles/2005/3/a/references.html