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Semi-explicit multilinear modeling of a PQ open-loop controlled PV inverter in aß-frame

Authors :
Christoph Kaufmann
Georg Pangalos
Gerwald Lichtenberg
Oriol Gomis-Bellmunt
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Elèctrica
Universitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica
Universitat Politècnica de Catalunya. CITCEA-UPC - Centre d'Innovació Tecnològica en Convertidors Estàtics i Accionaments
Publication Year :
2023
Publisher :
Elsevier, 2023.

Abstract

This paper introduces semi-explicit multilinear modeling to ac power systems, including voltage source converters. Firstly, the novel semi-explicit multilinear modeling class is explained. Then this class is applied to a small example of PV inverter connected to an infinite bus. Some part of the nonlinear current reference calculation is expressed as a multilinear algebraic constraint. The formulation of this multilinear algebraic constraint allowed modeling the whole nonlinear inverter as a semi-explicit multilinear model. The novel modeling approach is compared with common nonlinear time-based simulation in Simulink. The results show a good approximation of the nonlinear model by its semi-explicit multilinear model where the relative error is below . This low error motivates the further usage of the semi-explicit multilinear modeling class for power system analysis.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....b38c89c87630afc2dd34f72ce5ba2b70