Analysis of influence of torque ripple reduction on acoustic noise of a synchronous reluctance machine

International audienceThis paper aims to present the relation between acoustic noise and torque ripple. An equation evaluating the variation of acoustic noise caused by reducing torque ripple in synchronous reluctance machine (SynRM) is proposed. First, qualitative relation between the torque and the radial magnetic pressure (RMP) is presented. A quantitative relation between the RMP and torque is defined. Thirdly, based on the proposed equation, the influence of torque ripple reduction on electromagnetic noise is studied. The evaluation method is also computed thanks to the vibro-acoustic software Manatee. It can be concluded that the proposed approach can analyze effect of reducing torque ripple on acoustic noise