Design-Oriented Analysis of Resonance Damping and Harmonic Compensation for LCL-Filtered Voltage Source Converters

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11 Citationer (Scopus)
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Abstrakt

This paper addresses the interaction between harmonic resonant controllers and active damping of LCL resonance in voltage source converters. A virtual series R-C damper in parallel with the filter capacitor is proposed with the capacitor current feedback loop. The phase lag resulting from the digital computation and modulation delays is thus compensated by the virtual capacitor. The frequency region that allows using resonant controllers is then identified with the virtual damper. It reveals that the upper frequency limit of harmonic resonant controllers can be increased above the gain crossover frequency defined by the proportional gain of current controller. This is of particular interest for high-performance active harmonic filtering applications and low-pulse-ratio converters. Case studies in experiments validate the theoretical analysis.
OriginalsprogEngelsk
TitelProceedings of the 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE-Asia)
Antal sider8
ForlagIEEE Press
Publikationsdatomaj 2014
Sider216-223
DOI
StatusUdgivet - maj 2014
Begivenhed2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE-ASIA) - Hiroshima, Japan
Varighed: 18 maj 201421 maj 2014

Konference

Konference2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE-ASIA)
LandJapan
ByHiroshima
Periode18/05/201421/05/2014

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