Fault tolerant operation of power converter with cascaded cells
2011 (English)In: Proceedings of the 2011 14th European Conference on Power Electronics and Applications, EPE 2011, 2011Conference paper (Refereed)
Multilevel converters based on cascaded cells are well suited for high power applications, due to good control performance, extensive modularity and excellent harmonic distortion. A vital requirement in high power converters is being fault-tolerant, so that a single fault in a cell does not lead to the trip of the entire converter. This paper presents a strategy for fault-tolerance on cell level with Integrated Gate Commutated Thyristors (IGCT). The concept is based on initiating a surge in a phase leg in a failing cell, limited by a di/dt reactor leading to a short circuit failure mode of the IGCT thereby excluding the cell from the chain.
Place, publisher, year, edition, pages
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-63828ScopusID: 2-s2.0-80053474201ISBN: 978-161284167-0OAI: oai:DiVA.org:kth-63828DiVA: diva2:482772
2011 14th European Conference on Power Electronics and Applications, EPE 2011. Birmingham. 30 August 2011 - 1 September 2011
QC 201201252012-01-242012-01-242016-05-04Bibliographically approved