Modular Multilevel Converter Operation in Passive Networks under Unbalanced Loads

被引：0

作者：

Zhang, Huaitian ^{[1
]}

Wickramasinghe, Harith R. ^{[2
]}

Li, Jinke ^{[3
]}

Konstantinou, Georgios ^{[2
]}

机构：

[1] Beijing Jiaotong Univ, Natl Act Distribut Network Technol Res Ctr, Beijing, Peoples R China

[2] UNSW Sydney, Sch Elect Engn & Telecommun, Sydney, NSW, Australia

[3] Jiangsu Power Design Inst Co LTD, China Energy Engn Grp, Nanjing, Jiangsu, Peoples R China

来源：

2019 IEEE PES GTD GRAND INTERNATIONAL CONFERENCE AND EXPOSITION ASIA (GTD ASIA) | 2019年

基金：

澳大利亚研究理事会;

关键词：

circulating current; capacitor voltage ripple; HVDC; load imbalance; modular multilevel converter; MVDC; passive network; CONTROL STRATEGY; SUPPRESSION;

D O I：

10.1109/gtdasia.2019.8715923

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Modular multilevel converters (MMCs) have a promising application in passive network supply, such as offshore platforms and remote loads. In these applications, load imbalance is inevitable, and the maximum-allowable voltage ripples and peak arm currents define the operating limits of modular multilevel converters. This paper investigates the impact of circulating current control supplying passive networks in capacitor voltage ripples of sub-modules and peak arm currents under unbalanced load conditions, 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 400 MVA benchmark MMC-based HVDC transmission system.

引用

页码：362 / 367

页数：6

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