Verification of effect of damper windings on the transient condition of synchronous generator

Junya Matsuki*, Hisao Taoka, Yasuhiro Hayashi, Shigeru Iwamoto, Akihiro Daikoku

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This paper describes the results of experimental investigation on the effects of damper winding of a 4-pole synchronous generator at the synchronous generator transient. It is known in the simulation that the damper winding acts effectively at the synchronous generator transient condition. However, experimental proof has not been performed yet. Then, experiments on damper effects were conducted in this paper using a laboratory-scale power system. The damper winding of tested generator consists of 5 damper bars each pole and the number of working damper bars can be changed manually. Damper currents at each bar were measured by a Rogowski coil. FFT analysis was applied to both damper currents and armature currents under different operating conditions. Relationships between damper currents in the rotor and armature currents in the stator were made clearer than before.

Original languageEnglish
Pages (from-to)447-454
Number of pages8
JournalIEEJ Transactions on Power and Energy
Issue number5
Publication statusPublished - 2011


  • Damper winding current
  • Harmonic component
  • Rogowski coil
  • Saliency
  • Transient characteristic
  • Verification

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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