DC-Link Voltage Balancing Modulation for Cascaded H-Bridge Converters

被引：3

作者：

Ko, Youngjong ^{[1
]}

Tcai, Anatolii ^{[2
]}

Liserre, Marco ^{[2
]}

机构：

[1] Pukyong Natl Univ, Dept Elect Engn & Ind 4 0 Convergence Bion Engn, Busan 48513, South Korea

[2] Christian Albrechts Univ Kiel, Chair Power Elect, D-24143 Kiel, Germany

来源：

IEEE ACCESS | 2021年 / 9卷

关键词：

Voltage control; Modulation; Loading; Voltage measurement; Heuristic algorithms; Sorting; Switches; Multilevel converter; Cascaded-H bridge converter; DC-link voltage balancing; modulation; STRATEGY;

D O I：

10.1109/ACCESS.2021.3098896

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Cascaded H-Bridge (CHB) converters have been widely employed in various applications, providing the advantages of modularity and multilevel voltage output. However, technically the CHB converters require isolated DC-link buses, which need to be regulated individually. In this context, a control scheme for the CHB converters features the voltage balancing algorithm. The voltage balancing control is typically performed by PI controller, where its control capability is limited by linear modulation region. In this work, the modulation based voltage balancing algorithm is proposed, which extends the balancing control capability and improves the dynamic performance. The proposed method is theoretically analyzed and validated through the simulation and experimental results.

引用

页码：103524 / 103532

页数：9

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