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dc.contributor.authorLyu, Jing
dc.contributor.authorZhang, Xin
dc.contributor.authorCai, Xu
dc.contributor.authorMolinas Cabrera, Maria Marta
dc.date.accessioned2019-04-12T08:04:15Z
dc.date.available2019-04-12T08:04:15Z
dc.date.created2019-01-17T16:23:19Z
dc.date.issued2018
dc.identifier.citationIEEE transactions on power electronics. 2018, 1 .nb_NO
dc.identifier.issn0885-8993
dc.identifier.urihttp://hdl.handle.net/11250/2594396
dc.description.abstractThe small-signal impedance modeling of a modular multilevel converter (MMC) is the key for analyzing resonance and stability of MMC-based power electronic systems. The MMC is a power converter with a multifrequency response due to its significant steady-state harmonic components in the arm currents and capacitor voltages. These internal harmonic dynamics may have great influence on the terminal characteristics of the MMC, which, therefore, are essential to be considered in the MMC impedance modeling. In this paper, the harmonic state-space (HSS) modeling approach is first introduced to characterize the multiharmonic coupling behavior of the MMC. On this basis, the small-signal impedance models of the MMC are then developed based on the proposed HSS model of the MMC, which are able to include all the internal harmonics within the MMC, leading to accurate impedance models. Besides, different control schemes for the MMC, such as open-loop control, ac voltage closed-loop control, and circulating current closed-loop control, have also been considered during the modeling process, which further reveals the impact of the MMC internal dynamics and control dynamics on the MMC impedance. Furthermore, an impedance-based stability analysis of the MMC-high-voltage direct current connected wind farm has been carried out to show how the HSS-based MMC impedance model can be used in practical system analysis. Finally, the proposed impedance models are validated by both simulation and experimental measurements.nb_NO
dc.language.isoengnb_NO
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)nb_NO
dc.relation.urihttps://www.researchgate.net/profile/Jing_Lyu3/publication/325493047_Harmonic_State-Space_Based_Small-Signal_Impedance_Modeling_of_Modular_Multilevel_Converter_with_Consideration_of_Internal_Harmonic_
dc.titleHarmonic State-Space Based Small-Signal Impedance Modeling of Modular Multilevel Converter with Consideration of Internal Harmonic Dynamicsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber10nb_NO
dc.source.volume1nb_NO
dc.source.journalIEEE transactions on power electronicsnb_NO
dc.identifier.doi10.1109/TPEL.2018.2842682
dc.identifier.cristin1659679
dc.description.localcode© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.nb_NO
cristin.unitcode194,63,25,0
cristin.unitnameInstitutt for teknisk kybernetikk
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode2


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