Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Self Oscillation DC/DC Converter with High Voltage Step Up Ratio
Authors Yong-Joon Jung ; Sang-Kyoo Han ; Sung-Soo Hong ; Chung-Wook Roh
Page pp.220-227
ISSN 1229-2214
Keywords Self oscillation; High voltage; Step up ratio; DC/DC Power converter
Abstract Recently, multilevel H-bridge inverters have become popular in medium to high power ac drive applications. One of significant advantages of them is low harmonic contents in their input line currents thanks to the transformer with multiple phase-shifted secondary windings. This paper attempts to provide basic guidelines for the design of the phase shifting transformer windings and theoretical analysis of input line current harmonics of H-bridge inverters. The part I provides the derivation of basic relationships between input and output current of the transformer and the relationship between the phase shifting characteristics and design aspects of the transformer.