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TUTCRIS

Impedance-Based Sensitivity-Criterion for Grid-Connected Three-Phase Inverters

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Yksityiskohdat

AlkuperäiskieliEnglanti
OtsikkoThe 10th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2018)
AlaotsikkoSeptember 23-27, 2018, Portland, Oregon, USA
KustantajaIEEE
Sivut4173-4178
Sivumäärä6
ISBN (elektroninen)978-1-4799-7312-5
DOI - pysyväislinkit
TilaJulkaistu - 12 huhtikuuta 2018
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaIEEE Energy Conversion Congress and Exposition - Portland, Yhdysvallat
Kesto: 23 syyskuuta 201827 syyskuuta 2018

Julkaisusarja

Nimi
ISSN (elektroninen)2329-3748

Conference

ConferenceIEEE Energy Conversion Congress and Exposition
MaaYhdysvallat
KaupunkiPortland
Ajanjakso23/09/1827/09/18

Tiivistelmä

Utilization of renewable energy sources such as solar and wind power requires affordable, reliable and efficient methods for grid connection. Most often, grid-parallel inverters are applied. As the number of inverter-connected resources in the power grid increases, they start to have a significant effect on the dynamics of the power system. The inverters have been shown to produce harmonic oscillations. To avoid producing or amplifying the harmonic content in the power grid currents and voltages, sensitivity of the inverter against external distortion should be analyzed. This paper provides a method for sensitivity analysis of the inverter. The sensitivity is analyzed by applying a forbidden region in the complex plane, which is based on the maximum-peak criterion that is often applied in the field of control engineering. The system is defined to have robust stability if the minor-loop gain formed by the inverter output impedance and the grid impedance stays out from the forbidden region.

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