Circulating current control for modular multilevel converter based on selective harmonic elimination with ultra-low switching frequency

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dc.contributor.authorPerez-Basante, Angel
dc.contributor.authorCeballos, Salvador
dc.contributor.authorKonstantinou, Georgios
dc.contributor.authorLiserre, Marco
dc.contributor.authorPou, Josep
dc.contributor.authorDe Alegria, Inigo Martinez
dc.contributor.institutionPOWER ELECTRONICS AND SYSTEM EQUIPMENT
dc.date.issued2016-10-25
dc.descriptionPublisher Copyright: © 2016 IEEE and EPE Association.
dc.description.abstractMultilevel converters (MCs) are utilized in medium voltage (MV) high power applications due to its higher efficiency than two level converters. On the other hand, modular multilevel converters (MMCs) provide several advantages with regard to other MCs, such as higher scalability, reliability and no requirement of a common DC capacitor. Particularly, low switching frequency modulations, such as (2N+1) selective harmonic elimination (SHE) - pulse width modulation (PWM), may improve the efficiency of MMCs when they are utilized in MV and high power applications, where the number of sub-modules is not high. This work presents a new circulating current control for MMC when (2N+1) SHE-PWM is utilized. Therefore, it is possible to operate the converter simultaneously with low switching frequency and low capacitor voltage ripple at every sub-module besides a correct energy balance between arms. In addition, a new method to implement (2N+1) SHE-PWM for MMCs, which is also valid to implement standard SHE-PWM for any MC, is provided. Using this method, different equation systems are not required for every switching pattern. In this way, this technique provides simultaneously both the switching patterns and the firing angles which solve the SHE problem, simplifying the searching task. Simulation results which have been obtained from a MMC with 5 sub-modules at every arm, have validated the novel proposed circulating current control. Furthermore, the spectrum of the simulated line to line voltage waveform has proved the correct performance of the proposed (2N+1) SHE-PWM implementation method. Several sets of angles have been provided throughout the ma range, where 17 harmonics have been controlled.en
dc.description.statusPeer reviewed
dc.format.extent10
dc.identifier.citationPerez-Basante , A , Ceballos , S , Konstantinou , G , Liserre , M , Pou , J & De Alegria , I M 2016 , Circulating current control for modular multilevel converter based on selective harmonic elimination with ultra-low switching frequency . in 2016 18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe . , 7695372 , 2016 18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe , Institute of Electrical and Electronics Engineers Inc. , pp. 1-10 , 18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe , Karlsruhe , Germany , 5/09/16 . https://doi.org/10.1109/EPE.2016.7695372
dc.identifier.citationconference
dc.identifier.doi10.1109/EPE.2016.7695372
dc.identifier.isbn9789075815245
dc.identifier.otherresearchoutputwizard: 11556/340
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=84996618823&partnerID=8YFLogxK
dc.language.isoeng
dc.publisherInstitute of Electrical and Electronics Engineers Inc.
dc.relation.ispartof2016 18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe
dc.relation.ispartofseries2016 18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordsConverter control
dc.subject.keywordsEfficiency
dc.subject.keywordsHarmonics
dc.subject.keywordsMultilevel converters
dc.subject.keywordsSwitching losses
dc.subject.keywordsHarmonic analysis
dc.subject.keywordsSwitches
dc.subject.keywordsModulation
dc.subject.keywordsCapacitors
dc.subject.keywordsSwitching frequency
dc.subject.keywordsVoltage control
dc.subject.keywordsCurrent control
dc.subject.keywordsHarmonic analysis
dc.subject.keywordsSwitches
dc.subject.keywordsModulation
dc.subject.keywordsCapacitors
dc.subject.keywordsSwitching frequency
dc.subject.keywordsVoltage control
dc.subject.keywordsCurrent control
dc.subject.keywordsEnergy Engineering and Power Technology
dc.subject.keywordsElectrical and Electronic Engineering
dc.subject.keywordsSDG 7 - Affordable and Clean Energy
dc.titleCirculating current control for modular multilevel converter based on selective harmonic elimination with ultra-low switching frequencyen
dc.typeconference output
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