NDLI: Control Method for Cascaded H-Bridge Multilevel Inverter Failures

Content Provider	IEEE Xplore Digital Library
Author	Yi Zang Xu Wang Bin Xu Jihong Liu
Copyright Year	2006
Description	Author affiliation: Inst. of Inf. Sci. & Eng., Northeastern Univ., Shenyang (Yi Zang; Xu Wang; Bin Xu; Jihong Liu)
Abstract	To increase the fault tolerance for cascaded H-bridge inverter, this paper presents a novel switch-based control method for operating the inverter when one or more switches are damaged. To control the inverter under faulty mode, only the faulty switches are disposed, the control signals for other switches in the faulty cell are modified according to the fault type. The influence of various faults on space vectors is analysed and the maximum achievable output voltage of the inverter with faulty switches is calculated. Compared with existing cell-based control methods, this method generates higher voltage space vector magnitudes and reduces the influence of switch problems on motor operation in most faulty modes, while keeping producing a balanced line to line voltage, the reliability of the system is then enhanced. The simulated results agree with the theoretical analysis
Starting Page	8462
Ending Page	8466
File Size	598569
Page Count	5
File Format	PDF
ISBN	1424403324
DOI	10.1109/WCICA.2006.1713629
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-21
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Inverters Switches Power system reliability Fault tolerance Low voltage Circuit faults Prototypes Information science Functional analysis Voltage control space vector Cascaded H-bridges multilevel inverter fault tolerance
Content Type	Text
Resource Type	Article

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