A fault-tolerant switching scheme for a high-power high-frequency-link inverter

Author

Tajfar, Alireza ; Mazumder, Sudip K.

Author_Institution

Electr. & Comput. Eng., Univ. of Illinois, Chicago, IL, USA

fYear

2012

fDate

25-28 Oct. 2012

Firstpage

5898

Lastpage

5903

Abstract

A modulation-based fault-tolerant switching scheme (FTSS) is outlined for an isolated high-frequency-link (HFL) inverter. It comprises a front-end Dc/pulsating-Dc converter followed by an Ac/Ac converter. At first, the lost phase in the Dc/Ac Converter is identified based on the type of distorted output line voltages and then modulation references are changed accordingly so as to restore the output line voltages. The proposed FTSS ensures operation under different types of fault conditions in the front-end Dc/pulsating-Dc converter without redundant circuits. Detailed results on the switching scheme as well as experimental validation using a fabricated prototype are presented.

Keywords

AC-AC power convertors; DC-AC power convertors; DC-DC power convertors; fault tolerance; invertors; AC-AC converter; DC-AC Converter; distorted output line voltages; fault conditions; front-end DC-pulsating-DC converter; high-power high-frequency-link inverter; isolated HFL inverter; isolated high-frequency-link inverter; lost phase; modulation references; modulation-based FTSS; modulation-based fault-tolerant switching scheme; output line voltage isolation; Pulse width modulation; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society

Conference_Location

Montreal, QC

ISSN

1553-572X

Print_ISBN

978-1-4673-2419-9

Electronic_ISBN

1553-572X

Type

conf

DOI

10.1109/IECON.2012.6389118

Filename

6389118