基于FPGA的矩阵变换器换流策略研究  

Analysis of Commutation Strategy for Matrix Converter Based on FPGA

作　　者：安星[1] 林桦[1] 王兴伟[1] 

机构地区：[1]华中科技大学,湖北武汉430074

出　　处：《电力电子技术》2011年第2期20-22,共3页Power Electronics

基　　金：湖北省自然科学基金项目(2009CDB413)~~

摘　　要：由于矩阵变换器采用单向自关断器件组成双向开关,无自然换流通路,因此如何安全可靠地实现器件间的换流是矩阵变换器实用化的关键。详细介绍了电流型四步换流策略及其实现方法,设计并实现了基于FPGA的矩阵变换器双向开关间的安全换流策略,在开关状态时间小于换流时间时,采用不换流的方法,重点解决了此时出现换流失败的问题。采用双电压调制法在矩阵变换器实验样机上进行了实验,在带阻感负载下得到相应的实验波形,实验结果表明该方法可实现矩阵变换器的安全换流。As the matrix converter using one-way self-commutated switches, it has no natural free-wheel path and how to achieve safely and securely commutation is one of the key practical.The implementation of four-step current-based commutation is presented.Also,the commutation strategy implemented with FPGA is designed and realized.When the time of the switch state is shorter than the commutation, we keep the unchanged commutation method and solve the failure of the commutation problem.The double voltage space vector module method is used to have experiments on the matrix converter prototype and get the wave of resistance-inductance load.The experiment results verify the commutation methods.

关 键 词：矩阵变换器 电流型换流 四步换流 现场可编程门阵列 

分 类 号：TM46[电气工程—电器]