On Inherent Redundancy of MMC-Based STATCOMs in the Overmodulation Region

被引：16

作者：

Cupertino, Allan Fagner ^{[1
,2
]}

Pereira, Heverton Augusto ^{[3
]}

Seleme Jr, Seleme Isaac ^{[4
]}

Teodorescu, Remus ^{[5
]}

机构：

[1] Univ Fed Minas Gerais, Grad Program Elect Engn, BR-31270901 Belo Horizonte, MG, Brazil

[2] Fed Ctr Technol Educ Minas Gerais, Dept Mat Engn, BR-30421169 Belo Horizonte, MG, Brazil

[3] Univ Fed Vicosa, Dept Elect Engn, BR-36570900 Vicosa, MG, Brazil

[4] Univ Fed Minas Gerais, Dept Elect Engn, BR-31270901 Belo Horizonte, MG, Brazil

[5] Aalborg Univ, Dept Energy Technol, DK-9220 Aalborg, Denmark

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2020年 / 35卷 / 03期

关键词：

Redundancy; Automatic voltage control; Capacitors; Modulation; Reactive power; Fault tolerant systems; Modular multilevel converter; redundancy; fault tolerance; overmodulation; MULTILEVEL; CONVERTER;

D O I：

10.1109/TPWRD.2019.2936784

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Modular multilevel converters (MMCs) are frequently featured to their modular structure, which results in fault-tolerant operation and easy redundancy realization. Nevertheless, in order to reach a given redundancy factor, more cells must be included in the converter, which directly affects the costs. This paper discusses the inherent redundancy of a modular multilevel converter (MMC) based static synchronous compensator (STATCOM) operating in the overmodulation region. Analytical expressions for the limits of the converter linear region were developed in order to define the minimum required dc-link voltage. Moreover, sensitivity analyses were implemented in order to show the effects of grid voltage variations, different output impedances, power factor and injected currents. The results indicated that the operation in overmodulation region has significant inherent redundancy. For a MMC based STATCOM with 26 cells, the converter can ride through 4 failures per arm without significantly increasing the output THD or reducing the injected current into the grid.

引用

页码：1169 / 1179

页数：11

共 23 条

[11] Carrier-based PWM-VSI overmodulation strategies: Analysis, comparison, and design [J].

Hava, AM ;

Kerkman, RJ ;

Lipo, TA .

IEEE TRANSACTIONS ON POWER ELECTRONICS, 1998, 13 (04) :674-689

[12] On Energy Storage Requirements in Modular Multilevel Converters [J].

Ilves, Kalle ;

Norrga, Staffan ;

Harnefors, Lennart ;

Nee, Hans-Peter .

IEEE TRANSACTIONS ON POWER ELECTRONICS, 2014, 29 (01) :77-88

[13] Redundancy Determination of HVDC MMC Modules [J].

Kim, Chanki ;

Lee, Seongdoo .

ELECTRONICS, 2015, 4 (03) :526-537

[14] Recent contributions and future prospects of the modular multilevel converters: A comprehensive review [J].

Kurtoglu, Mehmet ;

Eroglu, Fatih ;

Arslan, Ali Osman ;

Vural, Ahmet Mete .

INTERNATIONAL TRANSACTIONS ON ELECTRICAL ENERGY SYSTEMS, 2019, 29 (03)

[15] Comparative Study of the Active and Passive Circulating Current Suppression Methods for Modular Multilevel Converters [J].

Li, Binbin ;

Xu, Zigao ;

Shi, Shaolei ;

Xu, Dianguo ;

Wang, Andwei .

IEEE TRANSACTIONS ON POWER ELECTRONICS, 2018, 33 (03) :1878-1883

[16] Seamless Transition Control for Modular Multilevel Converters When Inserting a Cold-Reserve Redundant Submodule [J].

Li, Binbin ;

Zhang, Yi ;

Yang, Rongfeng ;

Xu, Rong ;

Xu, Dianguo ;

Wang, Wei .

IEEE TRANSACTIONS ON POWER ELECTRONICS, 2015, 30 (08) :4052-4057

[17] Optimized Control Strategy Based on Dynamic Redundancy for the Modular Multilevel Converter [J].

Liu, Gaoren ;

Xu, Zheng ;

Xue, Yinglin ;

Tang, Geng .

IEEE TRANSACTIONS ON POWER ELECTRONICS, 2015, 30 (01) :339-348

[18]

López M, 2015, IEEE ENER CONV, P3550, DOI 10.1109/ECCE.2015.7310162

[19] On the Redundancy Strategies of Modular Multilevel Converters [J].

Matos Farias, Joao Victor ;

Cupertino, Allan Fagner ;

Pereira, Heverton Augusto ;

Seleme Junior, Seleme Isaac ;

Teodorescu, Remus .

IEEE TRANSACTIONS ON POWER DELIVERY, 2018, 33 (02) :851-860

[20]

Rodriguez P., 2006, PROC 37 IEEE POWER E, P1

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