Large-Signal Stability Modeling for the Grid-Connected VSC Based on the Lyapunov Method

Autor:	Bahram Shakerighadi, Esmaeil Ebrahimzadeh, Frede Blaabjerg, Claus Leth Bak
Jazyk:	angličtina
Rok vydání:	2018
Předmět:	voltage source converter (VSC) energy function (EF) Lyapunov-based stability analysis Technology
Zdroj:	Energies, Vol 11, Iss 10, p 2533 (2018)
Druh dokumentu:	article
ISSN:	1996-1073
DOI:	10.3390/en11102533
Popis:	In this paper, a Lyapunov-based method is used in order to determine the stability boundaries of the grid-connected voltage source converter (VSC). To do so, a state space model of the VSC is used to form the Lyapunov function of the system. Then, by using the eigenvalues of the Lyapunov function, the system stability boundaries will be determined. It is shown that the grid-connected VSC works in its stable mode when all of its Lyapunov function’s eigenvalues are positive. The proposed model validity is tested by time-domain simulation. Simulation results show that the method is credible in determining the stability margin of the grid-connected VSC.
Databáze:	Directory of Open Access Journals
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