Dynamic Analysis of Modular Multilevel Converters
2013 (English)In: IEEE transactions on industrial electronics (1982. Print), ISSN 0278-0046, Vol. 60, no 7, 2526-2537 p.Article in journal (Refereed) Published
Theory for the dynamics of modular multilevel converters is developed in this paper. It is shown that the sum capacitor voltage in each arm often can be considered instead of the individual capacitor voltages, thereby significantly reducing the complexity of the system model. Two selections of the so-called insertion indices, which both compensate for the sum-capacitor-voltage ripples, are considered. The dynamic systems which respectively result from these selections are analyzed. An effective dc-bus model, which takes into account the contribution from the submodule capacitors, is obtained. Finally, explicit formulas for the stationary sum-capacitor-voltage ripples are derived.
Place, publisher, year, edition, pages
2013. Vol. 60, no 7, 2526-2537 p.
Control, dynamic systems, modular multilevel converters (M2Cs), voltage-source converters (VSCs)
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-121103DOI: 10.1109/TIE.2012.2194974ISI: 000316208000001ScopusID: 2-s2.0-84874851348OAI: oai:DiVA.org:kth-121103DiVA: diva2:617078
QC 201304222013-04-222013-04-192013-04-22Bibliographically approved