A Novel Control Strategy for Modular Multilevel Converter with Integrated Supercapacitor Energy Storage System

Guodong Zhao, Ke Shen, Guangzhao Luo, Dan Zhao

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

1 Scopus citations

Abstract

This paper proposes a state of charge (SOC) balancing control strategy for the modular multilevel converter (MMC) with integrated supercapacitor energy storage system (ISC-ESS). The equivalent model is derived by analyzing the behavioral characteristics between the SOC of the supercapacitors and ac-side output power. Moreover, the submodule (SM) capacitor voltage fluctuation suppression and energy management control strategy are put forward. The proposed control strategy enables the converter system to suppress SM capacitor voltage fluctuation during SC charging and discharging. A thorough simulation evaluation of the MMC with ISC-ESS has been conducted to validate the correctness and feasibility of the proposed solution.

Original languageEnglish
Title of host publicationProceedings
Subtitle of host publicationIECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society
PublisherIEEE Computer Society
Pages6037-6042
Number of pages6
ISBN (Electronic)9781728148786
DOIs
StatePublished - Oct 2019
Event45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019 - Lisbon, Portugal
Duration: 14 Oct 201917 Oct 2019

Publication series

NameIECON Proceedings (Industrial Electronics Conference)
Volume2019-October

Conference

Conference45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019
Country/TerritoryPortugal
CityLisbon
Period14/10/1917/10/19

Keywords

  • energy storage
  • fluctuation suppression
  • modular multilevel converter
  • state of charge

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