Title :
A New Passive Methodology for Reducing the Noise in Electrical Machines: Impact of Some Parameters on the Modal Analysis
Author :
Torregrossa, Dimitri ; Peyraut, François ; Cirrincione, Maurizio ; Espanet, Christophe ; Cassat, Alain ; Miraoui, Abdellatif
Author_Institution :
Univ. de Technol. de Belfort-Montbeliard, Belfort, France
Abstract :
This paper presents a 3-D finite-element modal analysis to reduce the acoustical power radiated by a brushless permanent-magnet synchronous machines and avoid any resonance phenomena. The method is able to analyze the impact of some design parameters on all the resonance frequencies for reducing the total sound power and gives some guidelines to their choice. A less noisy prototype has been analyzed in simulation without any acoustic calculation and then built and validated with experimental results.
Keywords :
acoustic noise; brushless machines; finite element analysis; machine testing; permanent magnet machines; synchronous machines; 3D finite-element modal analysis; brushless permanent-magnet synchronous machines; electrical machines; noise reduction; total sound power; Acoustic noise; Guidelines; Iron; Magnetic analysis; Modal analysis; Noise reduction; Permanent magnet machines; Resonance; Resonant frequency; Virtual prototyping; Finite-element method (FEM); passive mitigation of vibration and noise; skewed stator; structural analysis;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2010.2057491
