NDLI: Four-legged three-phase PFC rectifier with fault tolerant capability

Content Provider	IEEE Xplore Digital Library
Author	Zhang, R. Lee, F.C. Boroyevich, D.
Copyright Year	2000
Description	Author affiliation: GE Corp. Res. & Dev., Niskayuna, NY, USA (Zhang, R.)
Abstract	A four-legged three-phase PFC rectifier is proposed to handle unbalanced source voltage and to provide fault tolerant operation. The four-legged PFC rectifier is controlled by a three-dimensional space vector modulation (3D SVM) scheme, and runs in the overmodulation region when the source is unbalanced and/or a leg failure occurs. Modeling and control of the four-legged PFC rectifier are presented. Under unbalanced source, operation of the four-legged rectifier with three control strategies-equal current, equal resistance and constant power are analyzed. Two rectifier failure modes are studied: (1) entire leg fails; (2) active switches fail with the anti-parallel diodes still functional. It turns out that in both failure modes, the PFC rectifier can have an equal or higher than 2/3 of the rated output power level. The operation of the four-legged rectifier with 3D SVM is demonstrated by experimental results. The simulation results show that the proposed four-legged rectifier is advantageous over directly coupled three single-phase PFC rectifier and three-legged three-phase PFC rectifier.
Starting Page	359
Ending Page	364
File Size	535931
Page Count	6
File Format	PDF
ISBN	0780356926
ISSN	02759306
DOI	10.1109/PESC.2000.878878
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-06-23
Publisher Place	Ireland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rectifiers Fault tolerance Leg Power generation Power system reliability Voltage control Support vector machines Diodes Circuits Switches
Content Type	Text
Resource Type	Article

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