Grid inductance estimation by reactive power perturbation for sensor-less scheme based on virtual flux

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorKulka, Arkadiusz
dc.contributor.authorUndeland, Tore
dc.date.accessioned2011-11-23T12:57:44Z
dc.date.available2011-11-23T12:57:44Z
dc.date.issued2008
dc.description.abstractUse of renewable energy sources is raising for grid connected systems, for which higher power quality requirements are being issued. Monitoring the grid impedance ensure stable operation of the controller and proper connection and disconnection from the grid. Thus it is vital to know the value of grid or transformer distributed impedance in given time, instead assuming a constant value in controller. To overcome this problem an identification method based on perturbation of reactive power is proposed. The normally inductive character of the grid used together with synchronous frame current controller have cross coupling terms which are used in analysis. This method is suitable for use with virtual flux oriented control. It uses two current sensors and one dc link voltage sensor. Method enables maintain unity power factor not only at PCC but also further into the grid, including lines and transformer leakage inductance.en
dc.description.versionrevieweden
dc.format.extent7
dc.format.mimetypeapplication/pdf
dc.identifier.isbn978-951-22-9708-5
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/813
dc.identifier.urnurn:nbn:fi:tkk-011642
dc.language.isoenen
dc.publisherHelsinki University of Technologyen
dc.publisherTeknillinen korkeakoulufi
dc.relation.ispartofNordic Workshop on Power and Industrial Electronics (NORPIE/2008), June 9-11, 2008, Espoo, Finlanden
dc.relation.ispartofseriesProceedings of the Nordic Workshop on Power and Industrial Electronics (NORPIE/2008)en
dc.subject.keywordgrid impedanceen
dc.subject.keywordrenewably energyen
dc.subject.keywordvirtual fluxen
dc.subject.keywordVSC controlen
dc.subject.otherElectrical engineeringen
dc.titleGrid inductance estimation by reactive power perturbation for sensor-less scheme based on virtual fluxen
dc.typeA4 Artikkeli konferenssijulkaisussafi
dc.type.dcmitypetexten
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