矩阵式变换器的控制系统研究  

Research on Matrix Converter Control System

作　　者：杨苹[1] 吕学瑜[1] 郑木桂[1] 

机构地区：[1]华南理工大学,电力学院,广东广州510640

出　　处：《电力电子技术》2011年第3期9-12,共4页Power Electronics

基　　金：国家自然科学基金重点资助项目(60534040);广东省科技计划资助项目(2005A10505005,2007B010400080)~~

摘　　要：在研究双电压控制策略和四步换流策略基础上,提出了改进的双电压控制策略和变步长四步换流策略,以方便、可靠地实现控制策略并改善输出质量。改进的控制策略简化了开关组合,减少了系统计算量;变步长的换流策略既充分保证了可靠性,也减少了换流时间。这里详细介绍了双电压控制算法的推导过程,针对其存在的窄脉冲问题给出了分析过程和处理方法,同时介绍了变步长换流策略的工作原理。最后,介绍了双电压控制算法和变步长换流策略的硬件实现,并研制了基于数字信号处理器和可编程逻辑器件的矩阵式变换器样机进行实验研究,结果很好地验证了设计的可行性,为矩阵式变换器的工业化提供了有效的设计方案。Matrix converter is a novel AC/AC converter.Aiming at realizing the control strategy expediently and reliably,an improved double line-to-line voltage control strategy and validity of varying-step four steps communication strategy is proposed.Improved double line-to-line voltage control strategy simplifies switching combinations and infers a unified formula for calculating duty ratio.Varying-step four steps communication strategy decreases the commutation time to improve the quality of output waveform.The paper derives the double line-to-line voltage control strategy.The problem of the burst pulse is analysed and solved.The paper also introduces the principle of validity of varying-step four steps communication strategy.Finally,the actualize of the improved double line-to-line voltage control strategy and validity of varying-step four steps communication strategy are introduced.The experimental prototype of matrix converter based on DSPCPLD is built up.The experimental results verifiy the feasibility and validity of the design,and it provides an effective scheme to realize the production of matrix converter.

关 键 词：矩阵式变换器 双电压控制 变步长换流 

分 类 号：TM46[电气工程—电器]