A novel SVPWM-Based switching algorithm for MMC for high power applications

Safia B. Bashir, Abdul R. Beig

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

10 Scopus citations

Abstract

The emerging Modular Multilevel Converter (MMC) is considered as one of the promising topologies for high power application. The balancing of the capacitor voltage of the MMC Submodules (SMs) plays a critical role for proper operation of MMC. At low switching frequency the balancing of capacitor voltages of MMC becomes a challenging task. This paper proposes a balancing approach based on space vector PWM (SVPWM) switched at the fundamental frequency. The proposed method uses only one SVPWM to generate the switching vectors for the upper arm of the MMC. The switching vectors of the lower arm are obtained by finding the complement of the upper arm switching vectors, which in turn eliminates the requirement of using another SVPWM for the lower arm. To verify the proposed method a simulation of MMC with half-bridge submodules (SMs) was carried out in MATLAB/SIMULINK/SIMPOWER. The simulation results demonstrate the capability of the proposed strategy in balancing the SMs capacitors voltages even when the MMC is switched at fundamental frequency.

Original languageBritish English
Title of host publication2016 IEEE 59th International Midwest Symposium on Circuits and Systems, MWSCAS 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509009169
DOIs
StatePublished - 2 Jul 2016
Event59th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2016 - Abu Dhabi, United Arab Emirates
Duration: 16 Oct 201619 Oct 2016

Publication series

NameMidwest Symposium on Circuits and Systems
Volume0
ISSN (Print)1548-3746

Conference

Conference59th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2016
Country/TerritoryUnited Arab Emirates
CityAbu Dhabi
Period16/10/1619/10/16

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