Active Snubber Circuit for Source Commutated Converters Utilizing the IGBT in the Linear Region
2008 (English)In: IEEE transactions on power electronics, ISSN 0885-8993, E-ISSN 1941-0107, Vol. 23, no 5, 2595-2601 p.Article in journal (Refereed) Published
This paper describes a gate control method where an IGBT is controlled in its linear region by means of closed loop control in order to regulate the voltage slope during turn-on and to clamp the voltage of an anti-parallel diode in a source commutated converter. Controlling the voltage slope may be necessary in a high voltage converter to avoid emission of EMI or to avoid triggering oscillations which may cause insulation failure. Controlling the switching trajectory without influence from the device characteristics is important where series-connection is necessary to increase the overall blocking voltage. The control method has been verified by means of a prototype.
Place, publisher, year, edition, pages
IEEE , 2008. Vol. 23, no 5, 2595-2601 p.
Ac-ac power conversion; Electromagnetic interference; Insulated gate bipolar transistors; Snubbers
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject Järnvägsgruppen - Elsystem
IdentifiersURN: urn:nbn:se:kth:diva-10425DOI: 10.1109/TPEL.2008.2002093ISI: 000261599700038ScopusID: 2-s2.0-57349189392OAI: oai:DiVA.org:kth-10425DiVA: diva2:217109
QC 201506242009-05-132009-05-132015-11-11Bibliographically approved