Plug-in identification method for an LCL filter of a grid converter

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorKoppinen, Jussien_US
dc.contributor.authorKukkola, Jarnoen_US
dc.contributor.authorHinkkanen, Markoen_US
dc.contributor.departmentDepartment of Electrical Engineering and Automationen
dc.contributor.groupauthorElectric Drivesen
dc.date.accessioned2018-02-09T09:59:27Z
dc.date.available2018-02-09T09:59:27Z
dc.date.issued2018-04-02en_US
dc.description.abstractThis paper proposes a method for estimating the two inductances and the capacitance of an LCL filter, connected between the converter and the grid. Only the DC-bus voltage and converter phase currents need to be measured. An excitation signal is fed into the converter voltage reference. The fundamental and selected harmonic components are removed from the stored identification data to prevent biases in the parameter estimates. The parameters of the hold-equivalent discrete-time model are estimated recursively. The inductance and capacitance estimates are calculated from the estimated discrete-time parameters using the corresponding closed-form model. The proposed method can be added to existing converter control algorithms. It can provide the parameter estimates for the converter control. Further, it can be run occasionally during the normal operation in order to obtain an updated grid inductance estimate. Experimental results show that the proposed method yields very good parameter estimates and that it can also detect the changes in the grid inductance.en
dc.description.versionPeer revieweden
dc.format.extent10
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationKoppinen, J, Kukkola, J & Hinkkanen, M 2018, ' Plug-in identification method for an LCL filter of a grid converter ', IEEE Transactions on Industrial Electronics, vol. 65, no. 8, pp. 6270-6280 . https://doi.org/10.1109/TIE.2017.2787546en
dc.identifier.doi10.1109/TIE.2017.2787546en_US
dc.identifier.issn0278-0046
dc.identifier.otherPURE UUID: 71737d1d-9fa9-4010-bc0e-dc4eb1b652d5en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/71737d1d-9fa9-4010-bc0e-dc4eb1b652d5en_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/16823210/j39_post.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/29862
dc.identifier.urnURN:NBN:fi:aalto-201802091358
dc.language.isoenen
dc.relation.ispartofseriesIEEE Transactions on Industrial Electronicsen
dc.rightsopenAccessen
dc.subject.keywordconvertersen_US
dc.subject.keywordparameter estimationen_US
dc.subject.keywordpower filtersen_US
dc.titlePlug-in identification method for an LCL filter of a grid converteren
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionacceptedVersion

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