Multicommutation of IGBTs in large inverters

Large inverter-systems are characterized by a significant number of parallel IGBTs operating on the same dc-link. The IGBT-phases are cross coupled by their mutual stray inductance. This paper investigates the special effects occurring due to nearly simultaneous switching of multiple IGBTs. This ope...

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Bibliographic Details
Main Authors: Bakran, M.M., Helsper, M., Eckel, H.-G., Nagel, A.
Format: Conference Proceeding
Language:English
Subjects:
Circuit testing
Device application
Diodes
Free wheel diode
IGBT
Inductance
Insulated gate bipolar transistors
Inverters
Mutual coupling
Parallel operation
Stress
Switches
Voltage control
Voltage Source Inverters (VSI)
Wheels
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Description
Summary:Large inverter-systems are characterized by a significant number of parallel IGBTs operating on the same dc-link. The IGBT-phases are cross coupled by their mutual stray inductance. This paper investigates the special effects occurring due to nearly simultaneous switching of multiple IGBTs. This operation can cause a significant increase in stress on the IGBT and on the free wheel diode. Countermeasures to cope with these problems are discussed
DOI:10.1109/EPE.2005.219249