Stability Analysis of Grid-Connected VSCs Based on S-parameters and Reflection Coefficient

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Abstrakt

The grid-connected voltage source converter (VSC) is characterized as a multiple-input multiple-output (MIMO) system in the impedance-based stability analysis, which is also a two-port network. In this paper, the stability analysis methods based on electrical characterize description parameters or scattering parameters (S-parameters) and reflection coefficients are compared. Through the use of reflection coefficients, the single-input single-output (SISO) open-loop gains on each bus can be derived individually. The stability can then be analyzed using the classical Nyquist criterion and the relative stability can be defined, as well as the critical bus can be further identified. Moreover, "start-up" resonance frequency can be predicted in the stability analysis. Simulations and the experimental result validate the theoretical derivations.
OriginalsprogEngelsk
TitelProceedings of 2019 IEEE Energy Conversion Congress and Exposition (ECCE)
Antal sider8
UdgivelsesstedUSA
ForlagIEEE Press
Publikationsdatosep. 2019
Sider5171-5178
Artikelnummer8913265
ISBN (Trykt)978-1-7281-0396-9
ISBN (Elektronisk)978-1-7281-0395-2
DOI
StatusUdgivet - sep. 2019
Begivenhed2019 IEEE Energy Conversion Congress and Exposition (ECCE) - Baltimore, USA
Varighed: 29 sep. 20193 okt. 2019

Konference

Konference2019 IEEE Energy Conversion Congress and Exposition (ECCE)
LandUSA
By Baltimore
Periode29/09/201903/10/2019
NavnIEEE Energy Conversion Congress and Exposition
ISSN2329-3721

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