Power limitation analysis of hybrid MMC considering sub-module balancing constraint

Xiaojun Lu, Wang Xiang, Jinyu Wen, Weixing Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

Due to the hybrid composition of half-bridge submodule (HBSM) and full-bridge sub-module (FBSM) in each phase arm, hybrid modular multilevel converter (MMC) is able to actively adjust the output DC voltage and operate under reduced DC voltage. Sub-module balancing is one of the most concerned issues regarding low DC voltage operation. This paper analyzes the impact of sub-module balancing constraint on the active and reactive power transfer ability of hybrid MMC. The calculation method of the marginal active and reactive power limited by sub-module balancing constraint is presented, considering the characteristics of arm current and arm output voltage. The effect of DC voltage on the feasible operating area is studied. The proposed method can be treated as the empirical formulas to estimate the feasible active and reactive power range.

Original languageEnglish
Title of host publication2018 IEEE Power and Energy Society General Meeting, PESGM 2018
Number of pages5
Volume2018-January
ISBN (Electronic)9781538622124
DOIs
Publication statusPublished - 29 Jan 2018
Event2018 IEEE Power and Energy Society General Meeting, PESGM 2018 - Portland, United States
Duration: 5 Aug 201810 Aug 2018

Conference

Conference2018 IEEE Power and Energy Society General Meeting, PESGM 2018
CountryUnited States
CityPortland
Period5/08/1810/08/18

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Keywords

  • analytical analysis
  • HVDC transmission
  • hybrid MMC
  • power operating zone

Cite this

Lu, X., Xiang, W., Wen, J., & Lin, W. (2018). Power limitation analysis of hybrid MMC considering sub-module balancing constraint. In 2018 IEEE Power and Energy Society General Meeting, PESGM 2018 (Vol. 2018-January). [8586595] https://doi.org/10.1109/PESGM.2018.8586595