Stability Analysis of MMC under Grid Voltage Phase Change

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

2 Scopus Citations
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Author(s)

  • Yushuang Liu
  • Meng Huang
  • Xiaoming Zha
  • Chi K. Tse
  • Zhihong Yan

Detail(s)

Original languageEnglish
Title of host publicationProceedings of 2019 IEEE Energy Conversion Congress and Exposition (ECCE)
PublisherIEEE
Pages5179-5184
ISBN (Electronic)9781728103952
ISBN (Print)9781728103969
Publication statusPublished - Sep 2019
Externally publishedYes

Publication series

NameIEEE Energy Conversion Congress and Exposition, ECCE
ISSN (Print)2329-3721
ISSN (Electronic)2329-3748

Conference

Title11th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2019)
PlaceUnited States
CityBaltimore
Period29 September - 3 October 2019

Abstract

Grid voltage faults may cause grid voltage phase changes in grid-connected modular multilevel converter (MMC) systems, leading to power factor degradation and excessive reactive power in grid-connected MMC systems. To see the effect of reactive power on the stability of an MMC system, in this paper, the effects of the grid voltage phase on the control loop and hence stability of the system are analyzed. The Lyapunov method is adopted to identify the critical grid phases in grid-connected MMCs. By comparing the effects of the various parts of the control loop, it is concluded that the unstable response of MMCs under phase change is caused by the instability of the active power loop. The analytical results are verified by simulations of a three-phase 21-level MMC.

Research Area(s)

  • modular multilevel converter, ter, grid voltage phase change, control loop, stability analysis, Lyapunov method

Citation Format(s)

Stability Analysis of MMC under Grid Voltage Phase Change. / Yushuang Liu; Meng Huang; Xiaoming Zha et al.

Proceedings of 2019 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2019. p. 5179-5184 8912717 (IEEE Energy Conversion Congress and Exposition, ECCE).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review