所属单位：自动化学院
发表刊物：IET POWER ELECTRONICS
关键字：zero current switching zero voltage switching DC-DC power convertors switching convertors active-clamped ZVS current-fed push-pull isolated dc dc converter renewable energy conversion applications high-voltage conversion ratio zero-voltage switching zero-current-switching operation ZCS primary switches rectifier diodes low-voltage switches low on-state resistance switching loss voltage stress transformer turns ratio diode reverse-recovery effect
摘要：This study introduces a new active-clamped current-fed push-pull dc-dc converter for renewable energy conversion applications. The proposed converter conserves small input current pulsation, high-voltage conversion ratio, zero-voltage switching (ZVS) and zero-current-switching operation for primary switches and rectifier diodes, respectively, over a large load range. Also, the additional active clamping circuit serves to suppress the voltage spike across all primary switches, as well as assists in achieving ZVS operation. So, the low-voltage switches with low on-state resistance can be adopted. These features can reduce switching loss, voltage stress, transformer turns ratio and diode reverse-recovery effect. More importantly, similar characteristics can be obtained with minimised switches compared with the reported converters that enable to reduce the cost and improve the reliability. Detailed steady-state operation, analysis, performance comparison, experimental results and loss breakdown of the proposed converter are fully discussed in this study. Finally, a 520W prototype verifies the theoretical analysis.
ISSN号：1755-4535
是否译文：否
发表时间：2018-02-20
合写作者：Wu, Qunfang,Xu, Jialin,Xu, Zilong
通讯作者：Wu, Qunfang,王勤
发表时间：2018-02-20