Skip to main navigation Skip to search Skip to main content

A Decoupled Circulating Current Suppressing Strategy for Modular Multilevel Converter

  • School of Electrical Engineering and Automation, Harbin Institute of Technology
  • State Grid Corporation of China

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

Abstract

Modular multilevel converters (MMC) have an inevitable double-frequency circulating current between phases because of the three-phase parallel structure. This leads to extra power loss of the converter. The traditional circulating current suppression strategy suppresses the double-frequency content by superimposing the circulating current suppression signal into the reference of upper and lower arms. Due to the addition of the suppression signal, the upper-and lower-arm modulation reference waves are distorted. That affects the quality of output waveform on AC voltage. This paper proposes a decoupled circulating current suppressing strategy which suppresses the circulating current without affecting the output waveform on the AC side. Simulation and experiment results show the effectiveness of the proposed strategy.

Original languageEnglish
Title of host publication2018 IEEE 4th Southern Power Electronics Conference, SPEC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538682579
DOIs
StatePublished - 2 Jul 2018
Externally publishedYes
Event4th IEEE Southern Power Electronics Conference, SPEC 2018 - Singapore, Singapore
Duration: 10 Dec 201813 Dec 2018

Publication series

Name2018 IEEE 4th Southern Power Electronics Conference, SPEC 2018

Conference

Conference4th IEEE Southern Power Electronics Conference, SPEC 2018
Country/TerritorySingapore
CitySingapore
Period10/12/1813/12/18

Keywords

  • Modular multilevel converter
  • circulating current suppressing
  • decoupled

Fingerprint

Dive into the research topics of 'A Decoupled Circulating Current Suppressing Strategy for Modular Multilevel Converter'. Together they form a unique fingerprint.

Cite this