Reduced switch count dc-link ac-ac five-leg converter

被引:54
作者
Jacobina, Cursino Brandao [1 ]
de Freitas, Isaac Soares
Cabral da Silva, Edison Roberto
Nogueira Lima, Antonio Marcus
de Araujo Ribeiro, Ricardo Lucio
机构
[1] Univ Fed Campina Grande, Dept Elect Engn, BR-58109970 Campina Grande, Brazil
[2] Univ Fed Rio Grande do Norte, Dept Elect Engn, BR-59072970 Natal, RN, Brazil
关键词
converter modelling and control; five-leg converter; reduced switch count converter;
D O I
10.1109/TPEL.2006.880307
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 [电气工程]; 0809 [电子科学与技术];
摘要
This paper investigates a reduced switch count dc-link ac-ac five-leg converter for three-phase power conversion. The converter provides both an input rectifier and an output inverter by sharing a leg in order to reduce the number of power switches. Scalar and vector pulsewidth modulation techniques are presented and the concepts of local and global apportioning factors are introduced. A control technique that aims at maximizing the utilization of the dc-link voltage is proposed. A hysteresis current controller that allows operating with one leg being shared by the load and grid sides is developed. In addition, several relevant characteristics of the converter are addressed, such as voltage capability, harmonic distortion, shared-leg and capacitor currents, and power rating. The features of such a converter are compared to those of the six-leg and four-leg converters. Selected experimental results are presented.
引用
收藏
页码:1301 / 1310
页数:10
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