Active reduction of vibrations in synchronous motors by use of an estimator

Electric vehicles rise new issues, among them high frequency noise, that are coming from electric powertrain. This noise is caused by interaction between magnetic radial forces and mechanical stator structure. Current harmonics may excite stator natural frequencies, thus leading to vibrations responsible for acoustic noise. In this paper, we propose a new method based on control to reduce current harmonics. They are modeled as the consequence of a sinusoidal disturbance at a given frequency. This is estimated by an observer and this estimation is used to cancel harmonic components contained in stator currents.

[1]  D. Alexa,et al.  Optimization of PWM technique with partially constant modulating waves , 2000 .

[2]  Marc Bekemans.  Modélisation des machines électriques en vue du contrôle des efforts radiaux , 2006 .

[3]  Didier Dumur,et al.  Cancellation of bulging effect on mould level in continuous casting: Experimental validation , 2011 .

[4]  Didier Dumur,et al.  Cancellation of Bulging Effect on Mold Level in Continuous Casting: Experimental Validation , 2009 .

[5]  K. Hameyer,et al.  Active reduction of audible noise exciting radial force-density waves in induction motors , 2011, 2011 IEEE International Electric Machines & Drives Conference (IEMDC).

[6]  Didier Dumur,et al.  Suppression of periodic disturbances in the continuous casting process , 2008, 2008 IEEE International Conference on Control Applications.

[7]  Stefan Capitaneanu,et al.  On the acoustic noise radiated by PWM AC motor drives , 2003 .

[8]  G. Friedrich,et al.  Active reduction of electrical machines magnetic noise by the control of low frequency current harmonics , 2012, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society.

[9]  Arnaud Hubert.  Contribution à l'étude des bruits acoustiques générés lors de l'association machines électriques-convertisseurs statiques de puissance. Application à la machine asynchrone , 2000 .

[10]  Xavier Mininger.  Réduction des vibrations des machines à réluctance variable à l'aide d'actionneurs piézoélectriques , 2005 .