NDLI: Active voltage sharing of series connected strings of IGBT devices in bridge applications

Content Provider	IEEE Xplore Digital Library
Author	Belverde, G. Galluzzo, A. Melito, M. Musumeci, S. Raciti, A.
Copyright Year	1998
Description	Author affiliation: ST Microelectron., Catania, Italy (Belverde, G.)
Abstract	The successful use of series connected strings of MOSFETs or IGBTs, requires equalizing the dynamic and static voltage sharing across the devices. The dynamic voltage imbalance is generally managed via the slope control of the output voltages by snubber capacitors, or by active balancing circuits on the gate side. In this paper, a novel approach, based on the control of the currents supplied to the gates, is proposed. The main issues related to the application in bridge configuration of series connected strings of devices are faced. Firstly, the voltage sensing circuit is analyzed in order to meet the needs of bridge circuits. Experimental tests are performed in order to evaluate the impact of the actual control actions on the devices. Advantages and disadvantages of the proposed active voltage sharing circuit are treated extensively, in order to give also experimental evidence to the switching power losses in comparison with conventional approaches.
Starting Page	817
Ending Page	824
File Size	658624
Page Count	8
File Format	PDF
ISBN	0780349431
ISSN	01972618
DOI	10.1109/IAS.1998.730240
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-10-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Insulated gate bipolar transistors Performance evaluation Snubbers Capacitors Bridge circuits Current supplies Voltage control Circuit analysis Circuit testing MOSFETs
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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