Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/144589
Title: Circulating current control scheme of modular multilevel converters supplying passive networks under unbalanced load conditions
Authors: Zhang, Huaitian
Wickramasinghe, Harith R.
Jing, Long
Li, Jinke
Pou, Josep
Konstantinou, Georgios
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Zhang, H., Wickramasinghe, H. R., Jing, L., Li, J., Pou, J., & Konstantinou, G. (2019). Circulating current control scheme of modular multilevel converters supplying passive networks under unbalanced load conditions. Electric Power Systems Research, 171, 36–46. doi:10.1016/j.epsr.2019.01.041
Journal: Electric Power Systems Research
Abstract: Load imbalances in the supply of passive loads with modular multilevel converter (MMC)-based medium (MVDC) and high voltage (HVDC) dc-links are inevitable. In such applications, the maximum-allowable voltage ripples and peak arm currents define the operating limits of the MMCs. This paper demonstrates the impact of circulating current control in capacitor voltage ripples of sub-modules and peak arm currents under unbalanced load conditions when supplying passive networks, comparing the effects of three circulating current control methods on internal variables of the MMCs. The efficacy of the circulating current control is validated through real-time digital simulations of an 800 MVA benchmark MMC-based HVDC transmission system.
URI: https://hdl.handle.net/10356/144589
ISSN: 0378-7796
DOI: 10.1016/j.epsr.2019.01.041
Rights: © 2019 Elsevier B.V. All rights reserved. This paper was published in Electric Power Systems Research and is made available with permission of Elsevier B.V.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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