Novos conversores retificadores Sepic ZCS-PWM, operando como abaixadores de tensao, com elevados rendimento e fator de potencia - um estudo comparativo
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Data
2000-05-01
Autores
Sobrinho, Lourival T S [UNESP]
Kitamura, Roger A. [UNESP]
Wakabayashi, Fabio T. [UNESP]
Canesin, Carlos A. [UNESP]
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Resumo
A comparative evaluation regarding a new zero-current-switching (ZCS) pulse width modulated (PWM) Sepic rectifier, operating in voltage step-down mode, employing two different techniques, in order to obtain high power factor and reduced total harmonic distortion (THD) at the input current, is presented. The methods are those in continuous-current mode operation, known as peak current mode control with slope compensation, and average-current mode control. The principle of operation, the theoretical analysis, a design example and the main experimental results are presented for both proposed control techniques.
Descrição
Palavras-chave
Electric current control, Electric power factor, Harmonic analysis, Modal analysis, Pulse width modulation, harmonic distortion, Electric rectifiers
Como citar
Controle and Automacao, v. 11, n. 2, p. 100-109, 2000.