Hayato Naojima
Digital Engineering Dept. Digital Innovation Laboratory Corporate R&D Headquarters,
Fuji Electric Co., Ltd.
Abstract
In recent years, with the miniaturization and higher efficiency of rotating machines, there is also an increasing demand for noise reduction. In particular, electromagnetic vibrations and noise caused by the resonance of the stator’s electromagnetic force and eigenmode can often be problems. To predict these electromagnetic vibrations and noise at the design stage through numerical simulations, it is necessary to reproduce the electromagnetic force and vibration characteristics. Traditionally, we have been identifying the vibration characteristics of the stator’s laminated steel sheets and windings from experiments, but now we are developing a method which can determine these characteristics analytically in order to realize virtual prototyping. In this presentation, we introduce a case study of electromagnetic-structure-acoustic analysis using JMAG and Actran, targeting the electromagnetic vibration and noise of three-phase induction motors.
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