Zero voltage soft-commutation PWM DC-DC converter with saturable reactor switch-cascaded diode rectifier

被引:15
作者
Sun, JM [1 ]
Hamada, S [1 ]
Yoshitsugu, J [1 ]
Guo, B [1 ]
Nakaoka, M [1 ]
机构
[1] Yamaguchi Univ, Grad Sch Engn & Sci, Ube, Yamaguchi 755, Japan
来源
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-FUNDAMENTAL THEORY AND APPLICATIONS | 1998年 / 45卷 / 04期
关键词
asymmetrical PWM; DC-DC converter; forward and flyback hybrid transformer mode; high-frequency isolated link; lossless capacitive snubbers; low voltage and large current applications; saturable reactor switch; zero-voltage soft-switching; single-ended push-pull;
D O I
10.1109/81.669057
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
An improved single-ended push-pull (SEPP) half-bridge type zero-voltage soft-switching pulse width modulation (ZVS-PWM) DC-DC power converter is presented in this paper, which makes use of a saturable reactor-assisted lossless capacitor type zero voltage soft-switching method. The SEPP power converter with a high-frequency forward and flyback hybrid transformer link has some advantages such as lowered switching and conduction losses, soft-switching transition operation over a wide load range, constant frequency PWM regulation and minimized Electro Magnetic: Interference (EMI) as well as Radio Frequency Interference (RFI) noises. Its operating principle is illustrated acid its periodic steady-state circuit analysis are implemented. In order to demonstrate the remarkable effectiveness of this converter characteristics, feasible experiments are actually implemented with a 150-W-200-kHz prototype of high-frequency link ZVS-PWM DC-DC converter using power MOSFET's with ultrafast soft-recovery diode.
引用
收藏
页码:348 / 354
页数:7
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