TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Stability and Performance Analysis of Grid-Connected Inverter Based on Online Measurements of Current Controller Loop

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
OtsikkoIECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society
KustantajaIEEE
Sivut2013-2019
Sivumäärä7
ISBN (elektroninen)978-1-7281-4878-6
ISBN (painettu)978-1-7281-4879-3
DOI - pysyväislinkit
TilaJulkaistu - lokakuuta 2019
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaAnnual Conference of the IEEE Industrial Electronics Society -
Kesto: 1 tammikuuta 1900 → …

Julkaisusarja

NimiAnnual Conference of the IEEE Industrial Electronics Society
ISSN (painettu)1553-572X
ISSN (elektroninen)2577-1647

Conference

ConferenceAnnual Conference of the IEEE Industrial Electronics Society
Ajanjakso1/01/00 → …

Tiivistelmä

The amount of grid-connected three-phased inverters is increasing rapidly. In a weak grid, the non-ideal grid impedance decreases the control performance and can even compromise the system stability through load effect. The stability assessment of the inverter-grid interface has been assessed extensively through state-space and impedance-based methods. The current work presents stability analysis method based on the load-affected loop gain of the innermost control loop, which includes the effect of phase-locked loop and grid impedance. The stability analysis is carried out by assessing modeled and measured loop gains using the Nyquist criterion, step responses, and system closed-loop poles. The stability issues originating from grid impedance or too high phase-locked loop bandwidth are accurately predicted by examining the innermost control loop.

Tutkimusalat

Julkaisufoorumi-taso