Passivity-Based Analysis and Design of Linear Voltage Controllers for Voltage-Source Converters

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Abstrakt

This paper presents a systematic evaluation on the impedance passivity of voltage-controlled voltage-source converters. The commonly used single- and dual-loop control structures with different linear controllers are compared extensively, considering the effect of the time delay involved in the control loop. A virtual impedance control, co-designed with different voltage control schemes, is then proposed to eliminate the negative output resistance till half of the sampling frequency, which improves the system stability for grid-forming converters in grid-connected applications. Both frequency-domain analysis and experimental results validate the theoretical findings.
OriginalsprogEngelsk
TidsskriftI E E E Open Journal of the Industrial Electronics Society
Vol/bind1
Sider (fra-til)114-126
Antal sider13
ISSN2644-1284
DOI
StatusUdgivet - jun. 2020

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