Active Redundant Submodule Configuration in Modular Multilevel Converters

被引：136

作者：

Konstantinou, Georgios ^{[1
,2
]}

Pou, Josep ^{[1
,2
,3
]}

Ceballos, Salvador ^{[4
]}

Agelidis, Vassilios G. ^{[1
,2
]}

机构：

[1] Univ New S Wales, Australian Energy Res Inst, Sydney, NSW 2052, Australia

[2] Univ New S Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia

[3] Tech Univ Catalonia, Dept Elect Engn, Terrassa 08222, Spain

[4] Tecnalia, Energy Unit, Derio 48160, Spain

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2013年 / 28卷 / 04期

关键词：

Active redundancy; modular multilevel converter (MMC); redundant configuration; redundant submodules; voltage balancing; SWITCHING-FREQUENCY; HVDC SYSTEM; SUPPRESSION;

D O I：

10.1109/TPWRD.2013.2264950

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

080906 [电磁信息功能材料与结构]; 082806 [农业信息与电气工程];

摘要：

The modular multilevel converter (MMC) is based on the cascaded connection of identical submodules (SMs) enabling additional redundancies. This paper proposes the configuration of the MMC topology with redundant SMs and demonstrates the effects of active redundancies. The proposed configuration decreases the switching frequency per SM while reducing the SM capacitor voltage ripples. An analytical model for determining the SM capacitor voltage ripple and voltage dynamics is derived. The results from the analytical model are compared with the switching model for a 21-level MMC with five redundant (25 in total) SMs per arm. Experimental results based on a single-phase laboratory prototype with five SMs per arm and a single redundant cell further illustrate the operation and verify the derived mathematical model and simulation results.

引用

页码：2333 / 2341

页数：9

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