Initialization of Modular Multilevel Converter Models for the Simulation of Electromagnetic Transients

Anton Stepanov, Hani Saad, Ulas Karaagac, Jean Mahseredjian

Research output: Journal article publicationJournal articleAcademic researchpeer-review

15 Citations (Scopus)

Abstract

This paper presents an accurate steady-state initialization method for electromagnetic transient (EMT) models of modular multilevel converters (MMCs). The proposed method uses steady-state arm voltages and currents to initialize internal electrical variables and control systems of the converter, including capacitor voltage and gating signals of each sub-module. In addition to typical voltage source converter upper level control, MMC specific controls are also considered, including circulating current control, dc ripple control, and capacitor voltage balancing algorithm. EMT simulations on 101-level and 401-level MMC-HVDC systems confirm the accuracy of the proposed method.

Original languageEnglish
Article number8477141
Pages (from-to)290-300
Number of pages11
JournalIEEE Transactions on Power Delivery
Volume34
Issue number1
DOIs
Publication statusPublished - Feb 2019

Keywords

  • High-voltage direct current
  • initialization
  • modular multilevel converter
  • simulation
  • steady-state

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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