Design and implementation of 30kW 200/900V LCL modular multilevel based DC/DC converter for high power applications

S. M. Fazeli, A. Aboushady, K. H. Ahmed, D. Jovcic

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents the design, development and testing of a 30kW, 200V/900V modular multilevel converter (MMC) based DC/DC converter prototype. An internal LCL circuit is used to provide voltage stepping and fault tolerance property. The converter comprises two five level MMC based on insulated gate bipolar transistors (IGBTs) and metal oxide semiconductor field effect transistor (MOSFET). Due to low number of levels, selective harmonic elimination modulation (SHE) is used, which determines the switching angles in such a way that third harmonic is minimized whereas the fundamental component is a linear function of the modulation index. In addition, instead of using an expensive control board, three commercial control boards are embedded. This is required to implement the sophisticated DC/DC converter control algorithm. Simulation and experimental results are presented to demonstrate the converter performance in step up and down modes.

Original languageEnglish
Title of host publicationIET Conference Publications
PublisherInstitution of Engineering and Technology
Volume2016
EditionCP684
ISBN (Print)978-1-78561-188-9
DOIs
Publication statusPublished - 2016
Event8th IET International Conference on Power Electronics, Machines and Drives, PEMD 2016 - Glasgow, United Kingdom
Duration: 19 Apr 201621 Apr 2016

Conference

Conference8th IET International Conference on Power Electronics, Machines and Drives, PEMD 2016
CountryUnited Kingdom
CityGlasgow
Period19/04/1621/04/16

Keywords

  • DC fault
  • DC grids
  • DC/DC converter
  • Modular multilevel converter (MMC)
  • Selective harmonic elimination

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Fazeli, S. M., Aboushady, A., Ahmed, K. H., & Jovcic, D. (2016). Design and implementation of 30kW 200/900V LCL modular multilevel based DC/DC converter for high power applications. In IET Conference Publications (CP684 ed., Vol. 2016). Institution of Engineering and Technology. https://doi.org/10.1049/cp.2016.0144