A Deviation Elimination Control Based on Autonomous Current-Sharing Controller for the Parallel-Connected Inverters in AC Microgrids

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Abstrakt

Conventional autonomous current-sharing controller (ACSC) will induce inevitable frequency and voltage magnitude deviations due to the output currents and virtual impedances. Thereby secondary control has been proposed to restore the frequency and voltage magnitude deviations by using communication links. In this paper, an autonomous deviation eliminative control method is proposed for the parallel-connected inverters in AC islanded microgrids in order to simplify the control scheme and to improve power quality and control reliability. Two high-pass filters are included in synchronous-reference-frame virtual impedance loop and are activated in steady-state operation to attenuate frequency and voltage magnitude deviations, meanwhile maintaining the autonomous current-sharing performance among the parallel inverters. Simulation results based on two parallel-connected voltage controlled inverters from Matlab/Simulink verify the effectiveness of the proposed approach in different scenarios.
OriginalsprogEngelsk
TitelProceedings of the 2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)
Antal sider6
ForlagIEEE
Publikationsdato22 okt. 2018
Sider3678-3683
Artikelnummer8507423
ISBN (Trykt)978-1-5386-4190-3
ISBN (Elektronisk)978-4-88686-405-5
DOI
StatusUdgivet - 22 okt. 2018
BegivenhedThe 2018 International Power Electronics Conference
- Niigata, Japan
Varighed: 20 maj 201824 maj 2018

Konference

KonferenceThe 2018 International Power Electronics Conference
LandJapan
ByNiigata
Periode20/05/201824/05/2018

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