A Simple Current-Balancing Method for a Three-Phase 5-Level Current-Source Inverter

被引：6

作者：

Bao, Jianyu ^{[1
]}

Bao, Weibing ^{[2
]}

Zhang, Zhongchao ^{[3
]}

Fang, Weizhong ^{[4
]}

机构：

[1] Zhejiang Univ, Ningbo Inst Technol, Ningbo 315100, Zhejiang, Peoples R China

[2] Zhejiang Univ Technol, Zhijiang Coll, Hangzhou 310024, Peoples R China

[3] Zhejiang Univ, Coll Elect Engn, Hangzhou 310027, Peoples R China

[4] Hangzhou Easitech Corp, Hangzhou 310053, Peoples R China

来源：

IECON: 2009 35TH ANNUAL CONFERENCE OF IEEE INDUSTRIAL ELECTRONICS, VOLS 1-6 | 2009年

关键词：

Multilevel; Current-source inverters; Topology; Current balancing; Carrier phase-shifted;

D O I：

10.1109/IECON.2009.5414790

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 ; 0809 ;

摘要：

Whether the intermediate inductor current can be kept balanced or not is vital to the output performance of multilevel current-source inverters (CSI's). This paper begins by introducing the operational principle of a three-phase 5-level CSI topology. In such a 5-level CSI system, control of the 1/2-level intermediate DC-link current is identified as a key problem. In order to keep the intermediate DC-link current well balanced, the mechanism of current balancing is analyzed in detail. By identifying the value of the inductor current and the positive-negative polarity of the voltage across the intermediate inductor, a simple implementation method for current balancing control is proposed on the basis of the carrier phase-shifted SPWM technique in this paper. Simulation and experimental prototypes have been built to verify this 5-level CSI system with the proposed current balancing control method.

引用

页码：104 / COVER14

页数：754