Induction Motor Noise Reduction using JMAG

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AMMAR Aymen
Design Department, JEUMONT Electric

Abstract

JEUMONT Electric is a manufacturer of high power electrical rotating machines. In order to respond quickly to customers requirement JEUMONT Electric developed many tools based on analytical models. However, for specific requirements or to study local phenomena the use of Finite Elements Methods is unavoidable.
In this presentation we show how we used JMAG to reduce electromagnetic noise of an induction motor. First an analysis of the electromagnetic force is done. Secondly, JMAG was used to calculate stator mechanical eigen modes. Then, a coupling between mechanical and electromagnetic models gives the radiated noise. Finally, a comparison between three slots combinations allowed to pick up the best design.

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