摘要
以移动电源为应用背景,研究了一种以Buck/Boost作为拓扑结构的数字化双向DC/DC变换器.分析了双向Buck/Boost变换器不同工作模式下的的工作原理和控制方式,研究了影响数字控制系统控制性能的关键参数和数字控制算法的实现方法.最后,以dsPIC33为控制核心设计了一台功率为45 W的实验样机以验证设计的正确性.实验结果证明,系统能良好实现恒压恒流充电和能量双向流动的自由切换.
A digital controlled hi-directional DC/DC converter adopting the Buck-Boost topology for power bank application is studied. The circuit principles and control method of converter＇s different operation modes are analyzed. The paper also analyzes the key parameters which effect the performance of digital controlled system and studys the method of implementation of digital controller. Finally, a 45W experimental prototype is built with dsPIC33 microcontroller to validate the design. The experimental results show that the design realizes energy conversion in bi directional freely and has a good effect of constant voltage-constant voltage charging process.
出处
《微电子学与计算机》
CSCD
北大核心
2018年第1期72-78,85,共8页
Microelectronics & Computer
