摘要
分析了传统矩阵变换器空间矢量调制策略,提出一种新型的矩阵变换器电流控制策略。该控制策略在虚拟整流部分,通过适当选取输入电压可实现高输入功率因数控制;在虚拟逆变部分,在一个采样周期内通过对输出电流进行基于规则的滞环跟踪控制及对虚拟逆变器的合适矢量选择,确保输出电流的误差在一个小的滞环宽度内。新型电流控制策略相比传统的基本滞环控制,减少了输入电流的谐波,改善了矩阵变换器的输入、输出性能。通过Matlab软件仿真分析并搭建Dspace硬件实时仿真平台对所提控制策略进行了实验研究,仿真及实验结果验证了新型电流控制策略的正确性。
A current control strategy of matrix converter based on conventional space vector control is proposed. In virtual rectifier, the appropriate input voltage is selected to implement the control with high input power factor. In virtual inverter, the rule-based hysteresis current tracking control is applied for output current and the appropriate space vector is selected in one sampling cycle to keep the error of output current within the given hysteresis band. Compared with the traditional basic hysteresis control, the harmonics of input current are reduced and the input/output performance of matrix converter is improved. Simulative analysis with Matlab and experiments on Dspace hardware real-time simulation platform are carried out, and results show the effectiveness of the proposed control strategy.
出处
《电力自动化设备》
EI
CSCD
北大核心
2009年第2期56-59,共4页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(60474043)~~
