Parametric Identification of DQ Impedance Model for Three-Phase Voltage-Source Converters

Gong Hong, Dongsheng Yang, Xiongfei Wang

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4 Citationer (Scopus)
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Abstrakt

The impedance-based approach has been widely used to predict the system stability at each point of connection of the individual voltage-source converter (VSC). However, the analytical impedance model is difficult to obtain because the system operators usually have no access to the detailed data of the control system of power converters due to confidentiality of manufacturers. Therefore, impedance measurement is necessary. In this paper, a broadband signal, pseudo-random binary sequence (PRBS) is selected as injected perturbations to excite the voltage and current response of VSC. Moreover, a parametric identification method for impedance measurement of VSC in the dq-frame is proposed based on recursive least squares algorithm. According to the nonlinear time-domain simulation data and the experimental data, the identified model of the converter is obtained. The accuracy of this impedance measurement method based on the parametric identification is verified in both the time-domain and frequency-domain.
OriginalsprogEngelsk
TitelProceedings of the 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018
Antal sider6
ForlagIEEE Press
Publikationsdatonov. 2018
Sider1-6
Artikelnummer8590653
ISBN (Trykt)978-1-5386-6055-3
ISBN (Elektronisk)978-1-5386-6054-6
DOI
StatusUdgivet - nov. 2018
Begivenhed2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018 - Shenzhen, Kina
Varighed: 4 nov. 20187 nov. 2018

Konference

Konference2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018
Land/OmrådeKina
ByShenzhen
Periode04/11/201807/11/2018
SponsorChina Power Supply Society (CPSS), IEEE Power Electronics Society (PELS)

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