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A new unbalanced voltage compensation method based on Hopf oscillator for three-phase DC/AC inverters with unbalanced loads

Luo Siyi, Wu Weimin, Koutroulis Eftychios, Chung Henry Shu-Hung, Blaabjerg, Frede, 1963-

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URIhttp://purl.tuc.gr/dl/dias/22AFEE23-91D3-4B4B-8BCF-AB19AC26C56A-
Identifierhttps://doi.org/10.1109/TSG.2022.3184911-
Identifierhttps://ieeexplore.ieee.org/document/9802696-
Languageen-
Extent11 pagesen
TitleA new unbalanced voltage compensation method based on Hopf oscillator for three-phase DC/AC inverters with unbalanced loadsen
CreatorLuo Siyien
CreatorWu Weiminen
CreatorKoutroulis Eftychiosen
CreatorΚουτρουλης Ευτυχιοςel
CreatorChung Henry Shu-Hungen
CreatorBlaabjerg, Frede, 1963-en
PublisherInstitute of Electrical and Electronics Engineersen
Content SummaryIn islanded microgrids, distributed generators (DGs) are employed as distributed compensators to improve the power quality on the load side. Due to the access of unbalanced loads, the low-voltage microgrid will naturally exhibit three-phase unbalance, which may cause additional power losses and deteriorate power quality. Therefore, this paper proposes a novel unbalanced-voltage compensation control method based on the Hopf oscillator, which introduces the negative-sequence voltage and current into the traditional Hopf oscillator to achieve the negative sequence voltage droop characteristics. It can not only realize the negative sequence droop control of a single inverter, but it is also capable to support the reactive power automatic distribution between multi-parallel grid-forming inverters. Compared with the traditional unbalanced voltage compensation method based on filtered negative sequence reactive power, the proposed unbalanced voltage compensation method can slightly improve the dynamic response. Experimental results verify the effectiveness of the proposed control strategy.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2023-12-04-
Date of Publication2022-
SubjectGrid-forming invertersen
SubjectHopf oscillatoren
SubjectUnbalanced-voltage compensationen
Bibliographic CitationS. Luo, W. Wu, E. Koutroulis, H. S. -H. Chung and F. Blaabjerg, "A new unbalanced voltage compensation method based on Hopf oscillator for three-phase DC/AC inverters with unbalanced loads," IEEE Trans. Smart Grid, vol. 13, no. 6, pp. 4245-4255, Nov. 2022, doi: 10.1109/TSG.2022.3184911.en

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