Abstract

For the grid-side current control of LCL-filtered grid-connected converters, capacitor current active damping is a common method to enhance dissipativity. However, the dissipation near the critical frequency can be jeopardized by the filter parameter deviation, which may result in high-frequency resonances. Besides, the grid voltage feedforward is often abandoned due to the stability consideration, which is however preferred in the practical application to enhance the transient performance. To tackle these challenges, a multi-sampled current control scheme is proposed in this paper. By combining the capacitor current active damping and the capacitor voltage feedforward, not only the dissipative range can be optimized up to the switching frequency, but also the robustness against the filter parameter deviation is enhanced. The validity of the proposed method is verified through the experiments.
OriginalsprogEngelsk
TitelProceedings of the 2022 IEEE Energy Conversion Congress and Exposition (ECCE)
Antal sider6
ForlagIEEE (Institute of Electrical and Electronics Engineers)
Publikationsdato1 dec. 2022
Artikelnummer9947784
ISBN (Trykt)978-1-7281-9388-5
ISBN (Elektronisk)978-1-7281-9387-8
DOI
StatusUdgivet - 1 dec. 2022
Begivenhed2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022 - Detroit, USA
Varighed: 9 okt. 202213 okt. 2022

Konference

Konference2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022
Land/OmrådeUSA
ByDetroit
Periode09/10/202213/10/2022
NavnIEEE Energy Conversion Congress and Exposition
ISSN2329-3721

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