Synchronous machine block diagram analysis with fast dynamics

A. Varghese, P. W. Sauer, M. A. Pai

Research output: Contribution to journalArticlepeer-review


Reduced order modelling techniques are employed to incorporate the dynamic effects of a q-axis damper winding in a lower-order synchronous machine model. Using timescale analysis of the two-axis model, it is shown that the DeMello-Concordia model is an approximation of the former under special conditions. An improved version of this model is derived which accounts for the damping provided by the amortisseur winding.

Original languageEnglish (US)
Pages (from-to)239-247
Number of pages9
JournalInternational Journal of Electrical Power and Energy Systems
Issue number4
StatePublished - Oct 1989


  • dynamic stability
  • eigenvalue analysis
  • machine modelling
  • power system dynamics

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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