Neutral-point-clamped hybrid multilevel converter with DC fault blocking capability for medium-voltage DC transmission

被引：0

作者：

Xinyu YU ^{[1
]}

Yingdong WEI ^{[1
]}

Qirong JIANG ^{[1
]}

Xiaorong XIE ^{[1
]}

Yuquan LIU ^{[2
]}

Ke WANG ^{[2
]}

机构：

[1] Department of Electrical Engineering, Tsinghua University

[2] Guangzhou Power Supply Co.Ltd.

来源：

JournalofModernPowerSystemsandCleanEnergy | 2017年 / 5卷 / 04期

关键词：

Neutral-point-clamped hybrid multilevel converter(NHMC); Unipolar full-bridge submodule(UFBSM); DC fault blocking capability; Modulation scheme;

D O I：

暂无

中图分类号：

TM721.1 [直流制输电]; TM46 [变流器];

学科分类号：

080801 ; 080802 ;

摘要：

This paper proposes a novel hybrid multilevel converter with DC fault-blocking capability, i.e., the neutral-point clamped hybrid multilevel converter(NHMC).By employing two types of unipolar full-bridge submodules along with director switches, which are composed of seriesconnected insulated-gate bipolar transistors, the NHMC combines the features and advantages of the neutral-point clamped converter and the modular multilevel converter.The basic topology, operating principles, modulation scheme, and energy-balancing scheme of the NHMC are presented. The DC fault-blocking capability of the NHMC is investigated. The number of power electronic devices used by the NHMC is calculated and compared with other multilevel converters, showing that the proposed NHMC can be an economical and feasible option for medium-voltage DC transmission with overhead lines. Simulation results demonstrate the features and operating scheme of the proposed NHMC.

引用

页码：524 / 536

页数：13

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