Buck变换器的电流型单周期控制方法

本文首次提出一类适用于DC-DC变换器的电流型单周期控制方法,包括电流~+-单周期控制(C~+-OCC)、电流~--单周期控制(C-OCC)、电流-单周期控制(C-OCC)。文中首先介绍了Buck变换器的电流型单周期控制原理,然后利用状态空间平均方法建立其小信号模型,在此基础上对它们进行了仿真,并对结果进行了对比分析,最后进行了实验研究,给出了相关实验结果。仿真和实验结果表明:C~+-OCC控制具有更优的动态负载性能。当输入电压变化时,C~--OCC控制Buck变换器的输出电压会减小,这与其他两种控制方法明显不同。综合起来看,C~+-OCC控制具有更优的性能。

The Current Type One Cycle Control Method to Buck Converter

The current type one cycle control method for DC-DC Converter is proposed in this paper,including C~ -OCC,C~--OCC and C-OCC.Firstly,the operation theory is described,and then,the small signal model of the current type one cycle controlled Buck con- verter is derived,based on this above,the simulations of the three kind of current type one cycle controlled Buck converter are per- formed and the simulation results are analysed by contrast,finally,the experimental results are given.The simulation and experimental results have shown that the C~ -OCC control has better load dynamic performance when compared with the other two control method, the C~--controlled Buck converter has different performance when the input voltage is changing,it is very interesting to find that output voltage will decrease when the input voltage is increasing.All in all,the C~ -OCC controlled Buck converter has better performance than the other two control method.