Wideband dissipativity enhancement of grid-following inverters using virtual element design

Zhiqing Yang, Wei Wu, Helong Li, Lijian Ding, Shan He*, Frede Blaabjerg

*Kontaktforfatter

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Abstract

Dissipativity provides a convenient approach to predict system stability, which explains the induced resonances from the perspective of damping. To mitigate potential resonances and improve stability, this work presents a design method to enhance the dissipativity of grid-following inverters over a wide frequency range. Based on the dq-domain admittances, the frequency-domain dissipativity affected by different control loops and the time delay are investigated. By designing virtual elements, the dissipativity in different frequencies can be flexibly enhanced. A model-based design criterion is proposed to tune the control parameters following a model-based approach. The design method is presented for a high-power inverter system. The effectiveness of the method is also proved with a down-scaled prototype, which includes simulations, experiments, and dissipativity analysis.
OriginalsprogEngelsk
TidsskriftCPSS Transactions on Power Electronics and Applications (CPSS TPEA)
Vol/bind8
Udgave nummer4
Sider (fra-til)336-347
Antal sider12
ISSN2475-742X
DOI
StatusUdgivet - 1 dec. 2023

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