Asymmetrical Half-Bridge Converter with Reduced DC-offset current in Transformer

被引：0

作者：

Baek, Jae-Il ^{[1
]}

Choi, Jaewon ^{[1
]}

Jeong, Yeonho ^{[1
]}

Jang, Yujin ^{[1
]}

Moon, Gun-Woo ^{[1
]}

Yu, Chan-Hun ^{[2
]}

机构：

[1] KAI ST, Elect Engn, DaeJeon, South Korea

[2] KERI, Elect Prop Dept, Chang Won, South Korea

来源：

2016 IEEE 8TH INTERNATIONAL POWER ELECTRONICS AND MOTION CONTROL CONFERENCE (IPEMC-ECCE ASIA) | 2016年

关键词：

Asymmetrical half-bridge converter; DC-offset current in transformer; hold-up time conditions;

D O I：

暂无

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：

In this paper, a new asymmetrical half-bridge converter with reduced DC-offset current in transformer is proposed. In general, to meet the hold-up time conditions, the conventional asymmetrical half-bridge (AHB) converter operates in wide-input-voltage range. Wide-input-voltage range design makes converter suffered from severe asymmetric operation under the nominal operation, which increases the DC-offset current in the transformer, size of the transformer, and unbalance of the voltage stresses of the secondary rectifiers. On the other hand, the proposed converter can reduce the DC-offset current in the transformer and relieve the unbalanced voltage stresses of the secondary rectifiers under the nominal operation by changing transformer turns-ratio with an auxiliary switch and capacitor. Therefore, the proposed converter can achieve high efficiency. The validity of the proposed converter is confirmed by experimental results from a prototype with 330-400V input, 300W/12V output.

引用

页数：5