Dynamic characteristic of electromechanical coupling effects in motor-gear system

Wenyu Bai, Datong Qin, Yawen Wang, Teik C. Lim

Research output: Contribution to journalArticlepeer-review

52 Scopus citations


Dynamic characteristics of an electromechanical model which combines a nonlinear permeance network model (PNM) of a squirrel-cage induction motor and a coupled lateral-torsional dynamic model of a planetary geared rotor system is analyzed in this study. The simulations reveal the effects of internal excitations or parameters like machine slotting, magnetic saturation, time-varying mesh stiffness and shaft stiffness on the system dynamics. The responses of the electromechanical system with PNM motor model are compared with those responses of the system with dynamic motor model. The electromechanical coupling due to the interactions between the motor and gear system are studied. Furthermore, the frequency analysis of the electromechanical system dynamic characteristics predicts an efficient way to detect work condition of unsymmetrical voltage sag.

Original languageEnglish (US)
Pages (from-to)50-64
Number of pages15
JournalJournal of Sound and Vibration
StatePublished - Jun 9 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering


  • Dynamic characteristics
  • Induction machine
  • Permeance network model
  • Planetary gear system
  • Unsymmetrical voltage sags


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