A Fault-Tolerant Control Strategy for Cascaded H-Bridge Multilevel Rectifiers

被引：23

作者：

Iman-Eini, Hossein ^{[1
]}

Farhangi, Shahrokh ^{[1
]}

Schanen, Jean-Luc ^{[2
]}

Khakbazan-Fard, Mahboubeh ^{[3
]}

机构：

[1] Univ Tehran, Sch Elect & Comp Engn, Tehran, Iran

[2] Grenoble Inst Technol, Grenoble Elect Engn Lab, Grenoble, France

[3] Distribut & Transmiss Management Co, Iran Power Generat, Tehran, Iran

来源：

JOURNAL OF POWER ELECTRONICS | 2010年 / 10卷 / 01期

关键词：

Cascaded H-bridge rectifier; Fault diagnosis and protection; Fault-tolerant design; Redundancy and reliability; PROTECTION; OPERATION; POWER;

D O I：

10.6113/JPE.2010.10.1.034

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：

Reliability is an important issue in cascaded H-bridge converters (CHB converters) because they use a high number of power semiconductors. A faulty power cell in a CHB converter can potentially lead to expensive downtime and great losses on the consumer side. With a fault-tolerant control strategy, operation can continue with the undamaged cells; thus increasing the reliability of the system. In this paper, the operating principles and the control method for a CHB multilevel rectifier are introduced. The influence of various faults on the CHB converter is investigated. The method of fault diagnosis and the bypassing of failed cells are explained. A fault-tolerant protection strategy is proposed to achieve redundancy in the CHB rectifier. The redundant H-bridge concept helps to deal with device failures and to increase system reliability. Simulation results verify the performance of the proposed strategy.

引用

页码：34 / 42

页数：9

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