Dynamic Characteristics of Integral Gain Changeable Digital Control DC-DC Converter for Suppression of Output Capacitance
Dynamic Characteristics of Integral Gain Changeable Digital Control DC-DC Converter for Suppression of Output Capacitance
复制标题
抑制输出电容的积分增益可变数字控制DC-DC变换器的动态特性
DOI：
10.20508/ijrer.v6i1.3452.g6779
复制
发表时间：
2016
影响因子：
1
通讯作者：
I. Colak
中科院分区：
文献类型：
--
作者：
K. Kajiwara;H. Tajima;H. Maruta;F. Kurokawa;I. Colak
由于直流母线难以保持稳定，功率变流器的稳定性在混合绿色能源系统中变得越来越重要。本文介绍了一种数字积分变增益控制DC-DC转换器的动态特性，以实现在抑制输出电容的同时实现高稳定性。变积分增益控制方法采用一种随负载电流大小变化的变积分增益控制方法。采用波德图进行稳定性分析。结果表明，即使输出电容小于常规方法，积分变增益控制方法的暂态响应和稳定性也优于传统的固定积分增益控制方法。仿真和实验结果表明了我们提出的概念的有效性。
Stability of power converters has become more and more important in the hybrid green energy system because of its difficulties to maintain a stable dc-bus. This paper presents dynamic characteristics of a digital integral gain changeable control dc-dc converter to realize the high stability with suppression of the output capacitance. The integral gain changeable control method uses a variable integral gain, which is changed by the value of load current. The stability analysis is conducted by Bode diagrams. It is shown that the transient response and stability of the integral gain changeable method are better than the conventional fixed integral gain control method even if the output capacitance is smaller than the conventional method. Simulation and experimental results show the effectiveness of our concept presented.