Power Electronics Electrônica de Potência Página do Eng. Armando Cavero Miranda

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.

domingo, 7 de abril de 2019

FUNDAMENTOS DE ANÁLISE DE CIRCUITOS ELÉTRICOS-DAVID E.JHONSON

LINK EN LA WEB
http://www.escolaelectra.com.br/alumni/biblioteca/Fundamentos_de_analise_de_circuitos.pdf

Converter Using Voltage Doubler Hee-Jun Lee*, Soo-Cheol Shin**, Seok-Jin Hong, Seung-Wook Hyun, Jung-Hyo Lee*** and Chung-Yuen Won

Performance Improvement of Isolated High Voltage Full Bridge Converter Using Voltage Doubler Hee-Jun Lee*, Soo-Cheol Shin**, Seok-Jin Hong*, Seung-Wook Hyun*, Jung-Hyo Lee*** and Chung-Yuen Won

Abstract – The performance of an isolated high voltage full bridge converter is improved using a voltage doubler. In a conventional high voltage full bridge converter, the diode of the transformer secondary voltage undergoes a voltage spike due to the leakage inductance of the transformer and the resonance occurring with the parasitic capacitance of the diode. In addition, in the phase shift control, conduction loss largely increases from the freewheeling mode because of the circulating current. The efficiency of the converter is thus reduced. However, in the proposed converter, the high voltage dual converter consists of a voltage doubler because the circulating current of the converter is reduced to increase efficiency. On the other hand, in the proposed converter, an input current is distributed when using parallel input / serial output and the output voltage can be doubled. However, the voltages in the 2 serial DC links might be unbalanced due to line impedance, passive and active components impedance, and sensor error. Considering these problems, DC injection is performed due to the complementary operations of half bridge inverters as well as the disadvantage of the unbalance in the DC link. Therefore, the serial output of the converter needs to control the balance of the algorithm. In this paper, the performance of the conventional converter is improved and a balance control algorithm is proposed for the proposed converter. Also, the system of the 1.5[kW] PCS is verified through an experiment examining the operation and stability.

LINK
http://www.kpubs.org/article/articleDownload.kpubs?downType=pdf&articleANo=E1EEFQ_2014_v9n6_2224