IMC多机传动系统输入电压不平衡控制策略  

Modulation strategy for multi-drive system based on indirect matrix converter under unbalanced input voltage

作　　者：梅杨[1] 常娜卿[1] 李正熙[1] 

机构地区：[1]北方工业大学北京市电力电子与电气传动工程研究中心,北京100144

出　　处：《冶金自动化》2012年第4期64-68,共5页Metallurgical Industry Automation

基　　金：国家自然科学基金资助项目(50907002)

摘　　要：间接矩阵变换器(IMC)多机传动系统拓扑结构特点及其能量流动的复杂性,决定了其输入与输出直接相关,因此,当输入电压不平衡时,要根据多台电机的运行状态采取相应的补偿控制策略,改善输出性能。本文基于瞬时功率理论提出了一种适用于多台电机都处于电动运行时的调制策略,通过使IMC输入侧有功功率恒定,构造输入电流矢量,在整流级调制中引入变化的调制比补偿输入电压不平衡带来的谐波影响。Matlab/Simulink仿真结果表明,该补偿方法减小了IMC多机传动系统输出电流的谐波含量,改善了系统性能。此外,该方法计算简单,易于实现。The topology of multi-drive system based on indirect matrix converter （ IMC ） and its complex energy flow determine the output is directly related to the input. Proper compensation control strategy should be adopted to improve the output performance under unbalanced input voltage when the multi-motor works in electric operating status. In this paper, a compensation control strategy based on instantaneous power theory is proposed which controls the input active power, constructs the input cur- rent vector, and adds to the rectifer variational modulation ratio to improve the output waveform. Simu- lation result shows that the compensation method effectively reduces the harmonic of the output cur- rent, and improves the performance of the IMC multi-drive system. In addition, the method is simple and easy to achieve.

关 键 词：IMC多机传动系统 瞬时功率 调制策略 电压不平衡 有功功率 

分 类 号：TM46[电气工程—电器]