Title: Influence of drive train modelling simplification on stability and CCT of a DFIG-integrated power system

Authors: D.R. Karthik; Narayan S. Manjarekar; Shashidhara Mecha Kotian

Addresses: Department of EEE, BITS Pilani, K.K. Birla Goa Campus, Zuari Nagar, Goa, 403726, India ' Department of EEE, BITS Pilani, K.K. Birla Goa Campus, Zuari Nagar, Goa, 403726, India ' Department of EEE, National Institute of Technology Karnataka-Surathkal, NH 66, Srinivasnagar, Mangalore, Karnataka – 575025, India

Abstract: In this paper, the effect of drive train modelling simplification on the stability as well as the critical clearing time (CCT) of the doubly fed induction generator (DFIG)-integrated power system is examined. Eigenvalue analysis and time-domain-based simulations are utilised to study the influence of drive train models on stability and CCT. Two different operating conditions, i.e., UPF and non-UPF modes of grid side convereter (GSC) of DFIG are considered for analysis. It is observed that too much simplified drive train model results in over-optimistic stability predictions. Further, an over-simplified drive train model is found to withstand the longer fault duration. The factors contributing to the over-optimistic results are also discussed.

Keywords: drive train models; doubly fed induction generator; stability analysis; eigenvalue; time-domain simulations; critical clearing time.

DOI: 10.1504/IJPEC.2026.150619

International Journal of Power and Energy Conversion, 2026 Vol.17 No.1, pp.51 - 69

Received: 26 Oct 2023
Accepted: 06 May 2024
Published online: 18 Dec 2025 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article