Influence of Rotor Structure on Field Current and Rotor Electromagnetic Field of Turbine Generator under Out-of-Phase Synchronization

Weili Li, Purui Wang, Yong Li, Yi Xue, Dong Li, Xiaochen Zhang, Jianjun Zeng

Research output: Journal PublicationArticlepeer-review

15 Citations (Scopus)

Abstract

Out-of-phase synchronization (OPS) fault may occur to the turbine generator used in gas-steam combined cycle units, which may seriously endanger the operation stability of the generator unit. To investigate the influences of rotor structure on field current and rotor electromagnetic field of a turbine generator under OPS, a 2-D field-circuit-grid coupled model (FCGCM) of the 150-MW turbine generator is established. By using the established FCGCM, the influences of rotor slot indexing number (RSIN) and magnetic permeability of the rotor wedge on field current under OPS of 180° were studied. A magnetic no uniform coefficient (MNC) was proposed to evaluate rotor magnetic field nonuniformity. The relations of the field current oscillation ratio and MNC to RSIN and magnetic permeability of rotor wedge were investigated. The results could provide a theoretical basis for the electromagnetic mechanism of the turbine generator under OPS faults.

Original languageEnglish
Article number7847392
JournalIEEE Transactions on Magnetics
Volume53
Issue number6
DOIs
Publication statusPublished - Jun 2017
Externally publishedYes

Keywords

  • Field current oscillation ratio (FCOR)
  • magnetic field
  • magnetic nonuniform coefficient
  • out-of-phase synchronization (OPS)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Influence of Rotor Structure on Field Current and Rotor Electromagnetic Field of Turbine Generator under Out-of-Phase Synchronization'. Together they form a unique fingerprint.

Cite this