文献类型：期刊文献

中文题名：基于模型预测控制的IIOS型直流变换器研究

英文题名：Research on IIOS DC Converter Based on Model Predictive Control

作者：李鑫海 杨仁增 胡洛铖

第一作者：李鑫海

机构：[1]贵州大学电气工程学院,贵州贵阳550025;[2]贵州理工学院贵州省电力大数据重点实验室,贵州贵阳550003

第一机构：贵州大学电气工程学院,贵州贵阳550025

年份：2023

卷号：41

期号：3

起止页码：3-6

中文期刊名：机械与电子

外文期刊名：Machinery & Electronics

收录：CSTPCD

基金：贵州省科技基金项目(黔科合基础20181068)。

语种：中文

中文关键词：输入独立输出串联;模型预测控制;功率均衡;动态响应;光伏

外文关键词：input independent output in series;model predictive control;power balance;dynamic response;photovoltaic

摘要：以光伏接入直流配电网中输入独立输出串联(IIOS)型直流变换器为研究对象,对多模块串联输出的全桥隔离DC-DC变换器拓扑结构进行建模,为改善变换器的动态性能,引入了模型预测控制策略,利用全桥隔离DC-DC变换器功率传输特性预测得到下一时刻的输出,从而计算出对应的占空比进行移相控制,在此基础上设置电压均分环节修正占空比,实现各模块的功率均衡。最后通过MATLAB/Simulink仿真验证所提出的改进控制策略,实验结果与理论分析一致,且与传统的控制策略相对比,该控制策略动态响应更快,输出纹波更小,模块化的控制便于实现大规模的级联。
The input independent output series(IIOS) DC converter in photovoltaic access DC distribution network is taken as the research object,and the topology of the full-bridge isolated DC-DC converter with multimodule series output is modeled.For a better dynamic performance,a model predictive control strategy is introduced,and the power transmission characteristics of the full-bridge isolated DC-DC converter are used to predict the output at the next moment,so as to calculate the corresponding duty cycle for phase-shift control.The duty cycle is corrected in stages to achieve power balance of each module.Finally,the proposed improved control strategy is verified by MATLAB/Simulink simulation.The experimental results are consistent with the theoretical analysis.Compared with the traditional control strategy,the dynamic response of the control strategy is faster,the output ripple is smaller,and the modular control is easy to implement.