摘要
首先建立了Boost型DC-DC变换器平均数学模型和EL(Euler-Lagrange,EL)模型,基于变换器的无源性和EL模型,利用阻尼注入方法设计了无源控制器。由于无源控制器对变换器的输出电压控制为间接控制,可产生输出电压稳态误差;对此,提出利用输出电压与期望输出电压差对期望输入电流调整,以抑制输出电压稳态误差。具有期望输入电流调整的无源控制器,可使Boost型DC-DC变换器具有良好的动态与稳态性能。计算机仿真结果表明,本文的Boost型DC-DC变换器无源控制策略是可行的。
Average mathematical model and EL model of boost type DC-DC converter is set up first. Based on passivity and EL model of boost type DC-DC converter, passivity based controller is designed by damping injection. Output voltage of the converter is indirectly controlled by passivity based controller and steady error of output voltage can be appeared. In order to restrain steady error of output voltage, desired input current of the converter is regulated by the difference between output voltage and desired output voltage. Boost type DC-DC converter controlled by passivity based controller with desired input current regulated has good dynamical and steady performances. The passivity based control strategy of boost type DC-DC converter is proved feasible by computer simulation results.
出处
《电工技术学报》
EI
CSCD
北大核心
2015年第S1期80-85,共6页
Transactions of China Electrotechnical Society
