ENERGIA EOLICA NO BRASIL E NO MUNDO-CEARA

A primeira turbina eólica comercial ligada à rede elétrica publica foi instalada em 1976, na Dinamarca. Depois disso, houve uma grande expansão, principalmente nos países desenvolvidos. Entre os países usuários da energia eólica estão Estados Unidos, Alemanha, Espanha, Dinamarca, Índia, Japão, China, França, Argentina e Tunísia.A empresa alemã Wobben Windpower Enercom é uma das que aproveita as pesquisas sobre motores de aviões que foram aproveitados para a construção de parques eólicos. A companhia se instalou por todo o mundo, inclusive no Brasil, onde abriu uma fábrica no estado do Ceará.Em 1999 foi construído o primeiro parque eólico do mundo sobre dunas de areia, na praia da Taíba, no município de São Gonçalo do Amarante, Ceará. Com 10 aerogeradores, tem capacidade toal instalada de 5 Megawatts (MW). Anualmente o parque produz cerca de 17 milhões de kilowatts/ hora (KWh), quantidade suficiente para suprir de forma limpa e renovável as necessidades domiciliares de uma população de 50 mil pessoas.Nesse mesmo ano foi instalado um dos maiores parques eólicos da América Latina no município de Aquiraz, também no Ceará. Possui 20 aerogeradores e tem capacidade total instalada de 10 MW e sua produção anual chega aos 35 milhões de KWh.A energia eólica também está presente nos estados do Paraná, Rio Grande do Sul, Santa Catarina, Minas Gerais e Rio Grande do Norte. Graças ao Programa de Incentivo de Fontes Alternativas da Eletrobrás (Proinfa), vários projetos estão em execução e novos parques serão inaugurados.O Proinfa tem como objetivo aproveitar uma parte do potencial brasileiro. Segundo estimativas o País possui uma capacidade total de 143,5 gigawatts (GW), sendo 52% somente no nordeste. A faixa litorânea do Brasil apresenta ventos adequados para o aproveitamento em larga escala da energia eólica.Fonte: Instituto de Desenvolvimento Sustentável e Energias Renováveis

Modular and Scalable Power Converters in the UPS Industry

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Design and Implementation of NEW REGULATOR THREE PHASE

MAGNETICS APPLICATIONS ENGINEERING AND DESIGN

Magnetics® is a leading world supplier of precision soft magnetic components and materials to the electronics industry. We specialize in research, design, and production of a broad range of high-quality powder cores, ferrite cores, and strip wound cores for applications such as chokes, inductors, filters, transformers, and power supply components for use in alternative energy, telecommunications, aerospace, automotive, military, computer, medical, and other electronics system.

THE KOREAN INSTITUTE OF ELECTRICAL ENGINEERS

Name
The Korean Institute of Electrical Engineers (KIEE)
President
Soo Hyun Baek
Date of Establishment
July 9, 1947
Address
Room #901 New Annex B/D, 635-4 Yuksam-Dong, Gangnam-Gu, Seoul, Korea (135-703) Tel: +82-2-553-0151~5 Fax: +82-2-566-9957~8
Purpose of Establishment
The purpose of establishing KIEE was to have an organization intent on contributing itself to benefiting Korean society by promoting, developing and distributing electrical engineering technologies in accordance with rules and regulations for the establishment of a legal body for public interest (Article 1.1 of the Articles of Incorporation)
Major Businesses
1. Publication of KIEE bulletin, paper journal and books 2. Study and research 3. Host scientific conferences and lecture meetings 4. Preparation of standards and codes 5. International scientific study exchange 6. Preparation of plans and proposals for technology policy 7. Award meritorious service and promotion of study 8. Other essential businesses necessary for achieving the purposes of KIEE

Power Loss Calculation of High Frequency Transformers

Journal of Electrical Engineering & Technology, Vol. 1, No. 3, pp. 338~342, 2006
Geun-Soo Choi*, Shin-Yong Yoon*, Soo-Hyun Baek** and Kim Yong**
Abstract – This paper analyzed the power loss of transformers considering the magnetic component.
For this, each winding strategy and the effect of air gap between the ferrite core have been an
important variable for optimal parameter calculation. Inductors are very well known design rules to
devise, but the performance of the flyback converter as a function of transformer winding strategy has
not been fully developed. The transformer analysis tool used was PExpert. The influence of the
insulator thickness, effect of the air gap, how the window height and variation of the capacitive value
effects the coil and insulator materials are some of parameters that have been analyzed in this work.
The parameter analysis is calculated to a high frequency of 48[kHz]. Therefore, the final goal of this
paper was to calculate and adjust the parameters according to the method of winding array and air gap
minimizing the power loss.

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NEW DESIGN TOOLS FREE SWITCH POWER SUPPLY

Design Better Power Supply- Free Switch Mode Power Supply Circuit (SMPS) Design Software & Transformer Calculation / Simulation Tool

Micrometals

Inductor Design Software 2009 (MicroRelease_Nov2009.exe)

--DOS version--Filesize ~400K
Click Here to DownloadRF Design Software (Toroid.zip)
Micrometals, Inc. has thoroughly reviewed this design software and the equations utilized to calculate the suggested windings and believe the information to be accurate. It is important to note that the default settings can be altered and unacceptable designs generated. Before using this product, the buyer agrees to determine suitability of the product for their intended use or application. Micrometals shall not be liable for any loss or damage, including but not limited to incidental or consequential damages as a result of the use of this software.

Micrometals, Inc. established in 1951, is committed to supplying high quality iron powder cores to meet the needs of the electronics industry.
As the technology has changed, new shapes, sizes and materials have been introduced to become industry standards. Iron powder has been used as a core material in RF circuits for many years. It is typically used to produce high "Q" inductors from 50 KHz and broadband transformers above 50 MHz. It is a preferred core material due to its stability, high "Q" frequency response, and power handling capabilities.

GE estuda criação de centro de pesquisas e desenvolvimento no Brasil

A General Eletric (GE) planeja criar um centro de pesquisa e desenvolvimento no Brasil. A unidade seria a primeira da empresa na América Latina, que já conta com quatro centros ao redor do mundo: Estados Unidos, Alemanha, Índia e China. Segundo a Agência Brasil, o presidente da empresa no Brasil, João Geraldo Ferreira, pretende definir ainda no primeiro trimestre de 2010 a localidade onde a empresa implantará seu centro de pesquisa tecnológica, que deverá estar pronta até o final do ano.
Em comunciado da GE, o presidente e Chief Executive Officer (CEO) global da companhia, Jeff Immelt, diz que "o Brasil é a escolha lógica para a instalação?. Na avaliação do executivo, um laboratório de pesquisa industrial ajudará a companhia a formar parcerias mais fortes com nossos clientes.

Optimization of Powder Core Inductors of Buck-Boost Converters for Hybrid Electric Vehicles

Suwon, Korea
Gwang-Bo Choi
R&D Center
Changsung Corporation
Incheon, Korea

JNEX-Core®, amorphous and ferrite cores are compared for the
inductor of buck-boost converter for Hybrid Electric Vehicles
(HEVs). The core losses are analyzed at the condition of 10kHz
sine wave excitations. Permeability fluctuations vs. temperature
and magnetizing force will be analyzed and discussed. Under the
specifications of buck-boost converter for 20kW THS-II, the
power inductor will be designed with Mega-Flux®, JNEX-Core®
and the informative simulation results will be provided with
respect of dc bias characteristics, core and copper losses.
Keywords- HEVs; Buck-Boost Inductor; High power density;
Low core loss; Thermal stability; Leakage flux

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