适用于双级矩阵变换器的空间矢量过调制策略  

Space Vector Over-Modulation Strategy Used for Two-Stage Matrix Converters

作　　者：宋卫章[1] 钟彦儒[1] 魏西平[1] 孙向东[1] 

机构地区：[1]西安理工大学自动化与信息工程学院电气工程系,西安710048

出　　处：《电工技术学报》2012年第9期242-250,共9页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(60804040);陕西省重点学科建设专项资金(105-00X901);西安理工大学博士启动基金(105-211104)资助项目

摘　　要：针对双级矩阵变换器电压传输比低的固有缺陷,结合电流型及电压型变换器的过调制策略,提出了分别适用于双级矩阵变换器整流级和逆变级的空间矢量过调制策略,该过调制策略使最大电压传输比从0.866提高到1.053,输出电压基波幅值精确线性控制,谐波畸变率较小,其中逆变级调制策略还可有效抑制输入电压突升突降对输出性能的影响,同时无需预存大量数据,算法简单,易于实现。仿真和实验表明了文中过调制策略的可行性和正确性。Aiming at the low voltage transfer （TSMC）, on the basis of over-modulation strategy of ratio shortage of two-stage matrix converter current and voltage source converter, a space vector over-modulation algorithm suitable for rectifier and inverter of TSMC is proposed respectively, which improves the maximum voltage transfer ratio from 0.866 to 1.053 and controls the output voltage fundamental amplitude linearly as well as owns the low total harmonic distortion. Moreover, the inverter modulation strategy with this over-modulation algorithm can effectively immune to the influence imposed on the output performance caused by surge and sag input voltages. In addition, the algorithm are neither necessary to store a lot of data nor to do complex calculation, which are very suitable for implement. The feasibility and validity ~f the proposed over-modulation strategy are verified by simulation and experiment.

关 键 词：双级矩阵变换器 电压传输比 空间矢量调制 过调制 

分 类 号：TM46[电气工程—电器]