错时采样空间矢量调制的级联型多电平变流器及其在并联有源电力滤波器中的应用  

Cascade Multilevel Converter Based on Sample Time Staggered Space Vector Modulation and Its Application to Shunt Active Power Filter

作　　者：王立乔[1] 邬伟扬[1] 

机构地区：[1]燕山大学电气工程学院,秦皇岛066004

出　　处：《电工技术学报》2006年第12期90-97,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助重点项目(50237020);燕山大学博士基金资助项目(B155)。

摘　　要：介绍了错时采样空间矢量调制的基本原理,讨论了组合变流器与级联型多电平变流器的等价关系,提出了错时采样空间矢量调制在级联型多电平变流器中的实现方法,并进行了实验验证。给出了基于错时采样空间矢量调制级联型多电平变流器的并联电力有源滤波器的拓扑结构,设计了其交、直流控制系统,并以仿真和实验结果加以验证。仿真和实验结果表明,基于错时采样空间矢量调制级联型多电平变流器的并联有源滤波器可以在较低的开关频率下准确、有效地补偿负载谐波和无功功率。Sample Time Staggered Space Vector Modulation （STS-SVM） is a novel switch modulation strategy fit for large capacity power electronic equipment. The principle of STS-SVM is introduced. The equivalent relationship between multi-modular converters and cascade multilevel converters was discussed. The implementation method of STS-SVM used in cascade multilevel converters was presented with experimental verification. The advantages over other modulation strategies of STS-SVM are discussed. Combining the advantages of STS-SVM and cascade multilevel converters, a shunt active power filter with STS-SVM based cascade multilevel converters was proposed. Its control system of both AC side and DC side was designed. Simulation and experiment results indicate that the shunt active power filter with STS-SVM based cascade multilevel converters, which is of fast dynamic response, can compensate load harmonics and passive power precisely and efficiently at lower switch frequency.

关 键 词：大功率电力电子装置 错时采样空间矢量调制 级联型多电平变流器 并联有源电力滤波器 

分 类 号：TM51[电气工程—电器] TM76