NDLI: Fault diagnosis and neutral point voltage control when the 3-level inverter faults occur

Content Provider	IEEE Xplore Digital Library
Author	Ho-In Son Tae-Jin Kim Dae-Wook Kang Dong-Seok Hyun
Copyright Year	2004
Description	Author affiliation: Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea (Ho-In Son)
Abstract	Many multi-level inverter faults have detected using the over voltage and the over current in their systems. However, the fault detection of the switching elements is very difficult because the voltage and current according to each switching fault decrease more then the normal operation. The dc-link unbalancing voltage when the 3-level inverter faults occur causes a serious problem in safety and reliability of system. Therefore, this paper proposes the simple fault diagnose method and the neutral-point voltage control method that can protect a system from the unbalancing voltage of the dc-link capacitors when the of switching element faults in the 3-level inverter occur that is very efficient in ac motor drives of the high voltage and high power applications. Through experimental results, the superiority of the proposed method is demonstrated.
Sponsorship	IEEE Power Electon. Soc
Starting Page	4558
Ending Page	4563
File Size	348861
Page Count	6
File Format	PDF
ISBN	0780383990
ISSN	02759306
DOI	10.1109/PESC.2004.1354806
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-20
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Voltage control Pulse width modulation inverters Circuit faults Capacitors Space vector pulse width modulation Electrical fault detection Analog-digital conversion Fault diagnosis Protection Safety
Content Type	Text
Resource Type	Article

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