Dual-circulant Modulation for Inherent Submodule Voltage Balancing in MMDC

Shiyuan Fan, Xin Xiang, Yi Zhao, Yunjie Gu, Huan Yang, Wuhua Li, Xiangning He, Timothy C. Green

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding

2 Citations (SciVal)

Abstract

The modular multilevel dc-dc converter (MMDC) has attracted much interest in medium voltage dc applications, but it has to face the main issue of balancing submodule (SM) capacitor voltages. This paper proposes a dual-circulant modulation and mathematically proves it possessing the inherent balancing capability for arbitrary operation cases. Two sets of circular switching patterns are preset and combined to complete the full constrains on SM voltages for balancing, and then reallocated to keep the advantage of SM uniformity. The associated polynomial of circulant matrix is introduced and the coprime of polynomials demonstrates the full-rank feature of the extended switching matrix that promises the inherent balancing. Experiments are conducted on prototype to validate the inherent voltage balancing capability of the dual-circulant modulation.

Original languageEnglish
Title of host publicationPEAC 2022 - 2022 IEEE International Power Electronics and Application Conference and Exposition, Proceedings
PublisherIEEE
Pages33-38
Number of pages6
ISBN (Electronic)9781665491419
DOIs
Publication statusPublished - 7 Nov 2022
Event3rd IEEE International Power Electronics and Application Conference and Exposition, PEAC 2022 - Xiamen, China
Duration: 4 Nov 20227 Nov 2022

Publication series

NamePEAC 2022 - 2022 IEEE International Power Electronics and Application Conference and Exposition, Proceedings

Conference

Conference3rd IEEE International Power Electronics and Application Conference and Exposition, PEAC 2022
Country/TerritoryChina
CityXiamen
Period4/11/227/11/22

Bibliographical note

Funding Information:
This work was supported in part by the National Key Research and Development Program of China under Grant 2022YFE0101900, in part by the National Natural Science Foundation of China under Grant 52107214, and in part by the Provincial Key Research and Development Program of Inner Mongolia under Grant 2021D0026.

Funding

This work was supported in part by the National Key Research and Development Program of China under Grant 2022YFE0101900, in part by the National Natural Science Foundation of China under Grant 52107214, and in part by the Provincial Key Research and Development Program of Inner Mongolia under Grant 2021D0026.

Keywords

  • associated polynomial of circulant matrix
  • coprime polynomial
  • dual-circulant modulation
  • Inherent submodule voltage balancing
  • modular multilevel dc converter (MMDC)

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Safety, Risk, Reliability and Quality
  • Electronic, Optical and Magnetic Materials
  • Control and Optimization

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