A novel DC-link voltages balancing control method for cascaded H-bridge rectifier

被引：0
|
作者：
Tao, Xinghua [1 ,2 ]
Li, Yongdong [1 ]
Sun, Min [1 ]
机构：
[1] Tsinghua University, Beijing 100084, China
[2] Naval Engineering University, Wuhan 430033, China
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2011年 / 26卷 / 08期
关键词：
Bridge circuits - Rectifying circuits - Electric rectifiers - Topology;
D O I：
暂无
中图分类号：
O144 [集合论]; O157 [组合数学（组合学）];
学科分类号：
070104 ;
摘要：
DC-link voltages balancing is very important for cascaded H-bridge rectifier (CHBR). A new control method for voltages balancing is proposed in this paper. The relationship between the modulation index increment and the output voltage error is deduced. Therefore the modulation indexes of the cells are rearranged according to the measured dc voltages and the DC voltages are regulated to be the same value. The implement method for the proposed strategy is discussed in detail and the final method is derived. Simulations and experiments were carried out with the presented method. All of them approve that the proposed method is effective for such cascaded topology. The good performance is achieved when the CHBR is operating on the different conditions.
引用
收藏
页码：85 / 90
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