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.
|Publication status||Published - 2010|
|MoE publication type||Not Eligible|
|Event||IFAC WORKSHOPS - Periodic Control Systems PSYCO 2010 - Antalya, Turkey|
Duration: 26 Aug 2010 → 28 Aug 2010
|Conference||IFAC WORKSHOPS - Periodic Control Systems PSYCO 2010|
|Abbreviated title||PSYCO 2010|
|Period||26/08/10 → 28/08/10|
- Time-periodic system
- electrical machine
- self-bearing machine
- force actuator
- active control
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.