A three-phase ZVS PWM DC/DC converter with asymmetrical duty cycle for high power applications

被引:61
作者
Oliveira, DD [1 ]
Barbi, I
机构
[1] Fed Univ Ceara, Power Proc & Control Grp, Ceara, Brazil
[2] Univ Fed Santa Catarina, Inst Power Elect, INEP, Dept Elect Engn, Florianopolis, SC, Brazil
关键词
full-bridge converter; pulse-width modulation (PWM); soft commutation;
D O I
10.1109/TPEL.2004.842988
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
This paper proposes the application of the asymmetrical duty cycle to the three-phase dc/dc pulse-width modulation isolated converter. Thus, soft commutation is achieved for a wide load range using the leakage inductance of the transformer and the intrinsic capacitance of the switches, as no additional semiconductor devices are needed. The resulting topology is characterized by an increase in the input current and output current frequency, by a factor of three compared to the full-bridge converter, which reduces the filters size. In addition, the rms current through the power components is lower, implying the improved thermal distribution of the losses. Besides, the three-phase transformer allows the reduction of the core size. In this paper, a mathematical analysis, the main waveforms, a design procedure, as well as simulation and experimental results obtained in a prototype of 6 kW are presented.
引用
收藏
页码:370 / 377
页数:8
相关论文
共 10 条
[1]  
BARBI I, 1990, P IECON 90 C, P1051
[2]  
BARTOLI M, 1995, P IEEE INTELEC 95, P510
[3]  
BHAT AKS, 1996, P IEEE 27 ANN POW EL, V1, P252
[4]  
Divan D. M., 1991, IEEE T IND APPL, V27, P63
[5]  
MCLYMAN CWT, 1988, TRANFORMER INDUCTOR
[6]   PROBLEMS AND PERSPECTIVES IN THE DESIGN OF ANTI-HIV-1 AGENTS [J].
MOHAN, P .
DRUG DEVELOPMENT RESEARCH, 1993, 29 (01) :1-17
[7]  
OLIVEIRA DS, 2003, P BRAZ POW EL C, V1, P65
[8]  
STEIGERWALD RL, 1989, Patent No. 4864479
[9]  
ZIOGAS PD, 1991, P IEEE 22 ANN POW EL, P463
[10]  
ZIOGAS PD, 1988, P IAS 88 C, P813