Title :
Attenuation of Harmonic Rotor Vibration in a Cage Rotor Induction Machine by a Self-Bearing Force Actuator
Author :
Laiho, Antti ; Sinervo, Anssi ; Orivuori, Juha ; Tammi, Kari ; Arkkio, Antero ; Zenger, Kai
Author_Institution :
VTT Ind. Syst., Espoo, Finland
Abstract :
In this paper, attenuation of flexural rotor vibration in electrical machines is considered. In order to generate force on the machine rotor, an electromagnetic actuator based on self-bearing machine working principle is examined. A control method for attenuating harmonic rotor vibration components is applied in a 30 kW two-pole cage induction machine. The machine is equipped with a four-pole supplementary winding for generation of lateral force on the rotor. Experimental results for the two-pole induction motor are presented. The main contribution of this paper is to apply a control method, specially designed for compensating harmonic excitations, by using a built-in electromagnetic actuator in an induction machine.
Keywords :
asynchronous machines; electromagnetic actuators; machine bearings; machine control; rotors; stators; vibrations; electromagnetic actuator; flexural rotor vibration; four-pole supplementary winding; harmonic excitation; harmonic rotor vibration attenuation; lateral force generation; machine control method; power 30 kW; self-bearing force actuator; two-pole cage rotor induction machine; Actuators; Attenuation; Design methodology; Electromagnetic forces; Induction generators; Induction machines; Induction motors; Machine windings; Rotors; Vibration control; Active control; bearingless drive; electromagnetic actuator; induction machine; mechanical vibration; rotor-dynamics; self-bearing machine;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2009.2026168
