On inherent redundancy of MMC-based STATCOMs in the overmodulation region

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dc.creatorAllan F. Cupertino
dc.creatorHeverto Augusto Pereira
dc.creatorSeleme Isaac Seleme Júnior
dc.creatorRemus Teodorescu
dc.date.accessioned2025-05-15T13:12:58Z
dc.date.accessioned2025-09-08T23:49:30Z
dc.date.available2025-05-15T13:12:58Z
dc.date.issued2019
dc.identifier.doi10.1109/TPWRD.2019.2936784
dc.identifier.issn08858977
dc.identifier.urihttps://hdl.handle.net/1843/82288
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofIEEE Transactions on Power Delivery
dc.rightsAcesso Restrito
dc.subjectConversores eletrônicos
dc.subject.otherRedundancy , Automatic voltage control , Capacitors , Modulation , Reactive power , Fault tolerant systems
dc.subject.otherModular multilevel converter , redundancy , fault tolerance , overmodulation
dc.subject.otherStatic Synchronous Compensator , Inherent Redundancy , Overmodulation Region , Sensitivity Analysis , Power Factor , Fault-tolerant , Voltage Variation , Dc-link Voltage , Grid Voltage , Output Impedance , Modular Multilevel Converter , Redundant Factors , Upper Limit , Output Current , Reference Signal , Maximum Voltage , Modulation Index , Cell Voltage , High Voltage Direct Current , Lower Arm , Sum Of Voltages , Nonlinear Region , Grid Impedance , Voltage Ripple , Capacitor Voltage Ripple , Power Reference , Converter Operation , Minimum Number Of Cells , Technical Literature , Converter Design
dc.titleOn inherent redundancy of MMC-based STATCOMs in the overmodulation region
dc.typeArtigo de periódico
local.citation.epage1179
local.citation.spage1169
local.citation.volume35
local.description.resumoModular 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.
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELÉTRICA
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELETRÔNICA
local.publisher.initialsUFMG
local.url.externahttps://ieeexplore.ieee.org/document/8809215

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