A practical comparison between the three-phase series-stacked and neutral point clamped multilevel converter topologies

Lee, G. B. (2003-12)

Thesis (MScEng)--Stellenbosch University, 2003.

Thesis

ENGLISH ABSTRACT: The versatility of power electronic converters has made them a dominant force in the current electrical and electronic engineering industry. So too industry presents a wider range of applications, forever demanding operation at higher power levels. To meet this need a variety of multilevel converters have evolved. The challenge often lies in the selection of the appropriate topology for a specific application. This thesis presents a practical comparison between the Series-Stacked and Neutral Point Clamped multilevel converter topologies as candidates for Medium Voltage Direct Current and Traction applications. Their configurations, characteristics, switching techniques and practical performances are compared, in order to aid the topology selection process.

AFRIKAANSE OPSOMMING: As gevolg van die veelsydigheid van drywings elektroniese omsetters word dit geimplementeer in n toenemende hoeveelheid toepassings met toenemende drywings vlakke in die elektriese en elektroniese industrie. Om aan hierdie behoefte te voorsien het n reeks veelvlak omsetters ontstaan. Die uitdaging hiermee is die keuse van die toepaslike topologie vir n spesifieke doelwit. Hierdie proefskrif vergelyk die Serie Gekoppelde en die Geklemde Neutrale Punt omsetters ten opsigte van konfigirasie, karakteristieke, skakel tegnieke en praktiese werksverrigting om die toepaslikheid te bepaal vir Medium Spanning Gelykstroom en Traksie toepassings.

Please refer to this item in SUNScholar by using the following persistent URL: http://hdl.handle.net/10019.1/53287
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