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Operation analysis of quasi‐resonant, high‐frequency transformer link dc–ac converters applied to phase‐shift PWM control on the secondary side
Author(s) -
Michihira Masakazu,
Ueda Mitsuo,
Funaki Tsuyoshi,
Kawasaki ZenIchiro,
Matsuura Kenji
Publication year - 2000
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/(sici)1520-6416(20000130)130:2<88::aid-eej11>3.0.co;2-f
Subject(s) - transformer , pulse width modulation , commutation , converters , forward converter , flyback converter , emi , inverter , electronic engineering , control theory (sociology) , voltage , electrical engineering , engineering , boost converter , computer science , electromagnetic interference , control (management) , artificial intelligence
Abstract In recent years, the soft‐switching techniques have attracted attention for their peculiar advantages such as low switching loss, high power density, EMI/RFI noise reduction, and so on. The authors have previously reported on a quasi‐resonant dc–dc converter using new phase‐shift PWM control scheme. By using the proposed control scheme, circulating current is eliminated and ZVS (Zero Voltage Switching) is achieved with small commutating current. As a result, the conduction losses caused by their currents are substantially reduced. In this paper, the authors apply a proposed control scheme to a quasi‐resonant high‐frequency transformer link dc–ac converter. As a result, all switching devises in this dc–ac converter can achieve soft switching with small commutating current irrespective of inverter mode and rectifier mode. Its operating principle and unique features are described as compared with the symmetrical control scheme of dc–ac converter. Operating performance of this dc–ac converter in the steady state is illustrated by means of simulation results. © 1999 Scripta Technica, Electr Eng Jpn, 130(2): 88–98, 2000