摘要
针对矩阵变换器输出电流易受电网电压、负载不对称影响的问题,设计了一种基于状态反馈线性化的矩阵变换器非线性控制器,实现对输出电流的实时准确的跟踪。根据矩阵变换器的拓扑结构,构建矩阵变换器的输出端数学模型。利用Park变换将该数学模型变换为标准的仿射非线性系统,构建了反馈线性化控制器。利用MATLAB/Simulink将采用所设计的控制器的矩阵变换器与传统矩阵变换器进行仿真对比。仿真结果表明,设计的控制器有效地改善了系统在三相输入电压不对称、三相负载不平衡的非正常工况下的输出电流性能。将设计的控制器应用在搭建的矩阵变换器样机上,样机调试结果进一步说明了所设计的控制器的可行性。
In order to avoid the impact of asymmetric grid-voltage and loads on the output current of MC （Matrix Converter）,an MC nonlinear controller based on state feedback linearization is designed to precisely track the output current in real time. The mathematical model of MC output is built according to its topology and then transformed into a standard radiation nonlinear system by Park transformation,based on which,a state feedback linearization controller is designed. The MC with the designed controller and the traditional MC are compared by the simulation with MATLAB/Simulink,and the simulative results show that,the output current of the MC with the designed controller is effectively improved in abnormal working conditions,such as asymmetric three-phase voltage inputs,unbalanced three-phase loads. The designed controller is applied to an MC prototype and the commissioning results show its feasibility.
出处
《电力自动化设备》
EI
CSCD
北大核心
2015年第5期77-82,共6页
Electric Power Automation Equipment
基金
中央高校基本科研业务费专项资金资助项目(FRFAS-09-006B)
北京市重点学科共建项目(XK100080537)~~
关键词
矩阵变换器
双空间矢量调制
仿射非线性系统
非线性系统
状态反馈线性化
控制
matrix system
state feedback converter
double space vector modulation
radiation nonlinear system
nonlinear linearization
control
