摘要
随着电力电子技术的发展,直流变压器得到了越来越多的关注。为了实现低压功率器件在高压电能变换中的应用,以全桥直流变压器为基本功率模块构成了输入串联输出并联I(SOP)的直流变压器。为了避免最大占空比控制时,由于每个模块参数不一致性造成各模块输入不均压,在此给出了带偏置电压的输入电压闭环控制策略。理论分析和实验结果均表明I,SOP直流变压器能够获得较好的输入均压效果。
With the development of power electronic technology,DC/DC transformer is focused on in resent years.For realizing low voltage power devices to be used in high voltage conditions, the input series-output parallel （ISOP）DC/ DC transformer based on full-bridge topology model is introduced.For the sake of avoiding input-voltage not sharing under maximum duty ratio of each full-bridge model, the feedback control method of input voltage based on biased voltage is proposed.The analysis and experimental results are presented to verify the theoretic analyses.
出处
《电力电子技术》
CSCD
北大核心
2011年第2期91-93,共3页
Power Electronics
关键词
直流变压器
输入串联输出并联
均压控制
偏置电压
DC/DC transformer
input series-output parallel
voltage sharing control
bias voltage
