Analytic determination of conduction power losses in flying capacitor multicell power converter

Vahid Dargahi, Arash Khoshkbar-Sadigh, Keith Corzine

Research output: Contribution to conferencePaper

6 Scopus citations

Abstract

Multilevel converters are mainly used in the medium-voltage high-power applications. Flying capacitor multicell (FCM) converter is one of the well-known categories of multilevel power converters. Since conduction power loss investigation can be very advantageous in the design step of multilevel converters, this paper presents an analytic approach in order to calculate and investigate the conduction power loss in FCM converters. First, the rms and average currents of the insulated gate bipolar transistors (IGBTs) and anti-parallel diodes are analytically calculated by considering the associated duty cycle of each IGBT and anti-parallel diode, power converter modulation index, load current, and load power factor. Numerical results of the obtained analytical equations to calculate the rms and average currents of the IGBTs/diodes are compared against the simulation results whereas matching well and confirming accuracy of the derived formula. Afterwards, the obtained equations for the rms and average currents computation are used to calculate conduction power losses in a 12.25MVA 3.3kV 9-level (line-to-line) FCM power converter. A 2.5kV 1.5kA IGBT module from ABB is considered as power switches for FCM converter in performed case study.

Original languageEnglish (US)
Pages2358-2364
Number of pages7
DOIs
StatePublished - May 8 2015
Event30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015 - Charlotte, United States
Duration: Mar 15 2015Mar 19 2015

Conference

Conference30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015
CountryUnited States
CityCharlotte
Period3/15/153/19/15

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Analytic determination of conduction power losses in flying capacitor multicell power converter'. Together they form a unique fingerprint.

  • Cite this

    Dargahi, V., Khoshkbar-Sadigh, A., & Corzine, K. (2015). Analytic determination of conduction power losses in flying capacitor multicell power converter. 2358-2364. Paper presented at 30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015, Charlotte, United States. https://doi.org/10.1109/APEC.2015.7104678