双向全桥直流变换器的全功率范围软开关控制技术的研究

被引：12

作者：

王跃 ^{[1
]}

郭海平 ^{[2
]}

高远 ^{[1
]}

机构：

[1] 西安交通大学电气工程学院

[2] 南方电网科学研究院

来源：

电工电能新技术 | 2016年 / 35卷 / 01期

关键词：

双向直流变换器; 软开关; 移相控制; 占空比;

D O I：

暂无

中图分类号：

TM46 [变流器]; TM564 [各种开关];

学科分类号：

摘要：

双向全桥直流变换器不依靠额外的电路就能实现软开关,具有较高的效率。采用传统的纯移相调制方法,传输功率大,但无法在轻载时实现软开关;采用移相加占空比调制方法,可以在全功率范围内实现软开关,但最大传输功率会随着占空比的减小而减小,小占空比情况下功率输出受到限制。本文研究了双向全桥直流变换器的软开关特性,结合纯移相调制和移相加占空比调制的特点,提出一种新的优化控制方法,该控制方法可实现两种调制方法的平滑切换,在实现全功率范围内的软开关的同时又保证了传输功率的最大化。最后,本文在一台12k W的样机上对提出的控制方法进行了验证,实验结果表明了所提控制方法的正确性。

引用

页码：7 / 12

页数：6

共 9 条

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