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Hybrid Nearest Level and open loop control of Modular Multilevel Converters with N+1 and 2N+1 levels
KTH, School of Electrical Engineering (EES), Electric Power Systems. HVDC ABB AB, Dept Syst Studies, Ludvika, Sweden.
KTH, School of Electrical Engineering (EES), Electric Power Systems. Stattnet SF, Oslo, Norway. (SmarTS Lab)ORCID iD: 0000-0002-4125-1055
KTH, School of Electrical Engineering (EES), Electric Power Systems. (SmarTS Lab)ORCID iD: 0000-0002-2845-8043
KTH, School of Electrical Engineering (EES), Electric Power Systems. HVDC ABB AB, Dept Syst Studies, Ludvika, Sweden.
2014 (English)In: Power Electronics and Applications (EPE'14-ECCE Europe), 2014 16th European Conference on, IEEE conference proceedings, 2014Conference paper, Published paper (Refereed)
Abstract [en]

In this paper a Nearest Level Control with open loop approach for modular multilevel converter (MMC) is proposed. By using open loop approach it is possible to suppress circulating currents without using feedback controllers. Moreover, with this method, both N+1 and 2N+1 levels (N=number of sub-modules) can be obtained at the output voltage. In addition, the voltage quality is improved and the total harmonic distortion is reduced at higher and lower modulation indices by increasing the number of levels up to 2N+1. Simulation results of 3-phase MMC are presented for both 2N+1 and N+1 levels together with the description of proposed Nearest Level Control scheme.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2014.
Keyword [en]
Multilevel Converters, Voltage Source Converter (VSC), Modulation Strategy, Modeling, Simulation
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-161752DOI: 10.1109/EPE.2014.6910866ISI: 000361460002052Scopus ID: 2-s2.0-84923917534OAI: oai:DiVA.org:kth-161752DiVA: diva2:795610
Conference
EPE’14-ECCE Europe,26-28 Aug. 2014,Lappeenranta
Note

QC 20150319

Available from: 2015-03-16 Created: 2015-03-16 Last updated: 2015-10-20Bibliographically approved

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Vanfretti, LuigiLi, Wei

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