摘要
以实现三相-两相矩阵变换器(3-2 MC)输入电流正弦化控制为目标,推导了在该目标下两相输出电压调制波函数表达式。针对三端输出3-2 MC拓扑结构下扇区划分数量较多的问题,提出了对原有扇区划分的简化方法。基于该扇区划分原则改进了原有空间矢量调制策略,推导了占空比表达式,给出了该调制策略下的开关函数矩阵,详细分析了系统最大电压利用率。为获得良好的动态响应性能,通过建立dq坐标轴下3-2 MC的信号模型,提出了基于输出侧电流加权合成反馈的双闭环控制策略。通过实验验证了理论分析的正确性和所提控制策略的可行性。
In order to achieve the sinusoidal control of input current of 3-2 MC（three-phase to two-phase Matrix Converter）,the functional expression of two-phase output voltage modulation is formulated. A simplified sector partition method is proposed under the three-terminal topology. The sector partition principle could improve the original space vector modulation strategy,in which the expression of duty cycle is obtained,and the switching function matrix of the modulation strategy is presented. Also,detailed output voltage utilization ratio is analyzed to provide satisfying dynamic response,a dual-closed-loop control strategy based on weighted synthesis feedback of output current is proposed,where the 3-2 MC signal model in dq coordinate system is formulated. The correctness of the theoretical analysis and the validity of the proposed control strategy are verified by experimental results.
出处
《电力自动化设备》
EI
CSCD
北大核心
2018年第1期59-65,共7页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(U1233127)~~
