Modelling of flexural rotor vibration and time-periodic system dynamics in a two-pole cage induction machine equipped with a self-bearing force actuator

Antti Laiho, Kari Tammi, Ville Vidqvist

Research output: Contribution to conferenceConference articleScientific

6 Citations (Scopus)

Abstract

In this paper, linear time--periodic system dynamics in rotor vibration of electrical machines is examined. We consider a two-pole cage induction machine equipped with a built--in force actuator for active generation of lateral force on the rotor. The main contribution of the work is to identify and model the sources of time-periodic system dynamics in the coupled electromechanical actuator-rotor system. Especially, the effect of higher spatial harmonics of the magnetic field on the generated force is considered. In this work, a linear time--periodic model for the actuator-rotor system is derived. The parameters of the analytical model are estimated by using time-stepping finite-element analysis of the machine.
Original languageEnglish
Publication statusPublished - 2010
MoE publication typeNot Eligible
EventIFAC WORKSHOPS - Periodic Control Systems PSYCO 2010 - Antalya, Turkey
Duration: 26 Aug 201028 Aug 2010

Conference

ConferenceIFAC WORKSHOPS - Periodic Control Systems PSYCO 2010
Abbreviated titlePSYCO 2010
CountryTurkey
CityAntalya
Period26/08/1028/08/10

Keywords

  • Time-periodic system
  • electrical machine
  • self-bearing machine
  • force actuator
  • active control
  • vibration

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    Laiho, A., Tammi, K., & Vidqvist, V. (2010). Modelling of flexural rotor vibration and time-periodic system dynamics in a two-pole cage induction machine equipped with a self-bearing force actuator. Paper presented at IFAC WORKSHOPS - Periodic Control Systems PSYCO 2010, Antalya, Turkey.