Noise Radiated by an Electric Motor IWRN11 Uddevalla 2013

Electrical machines radiate high frequency pure tones noise which can be annoying, despite a low overall noise. To evaluate sound perception of future users during the design phase, a multiphysical tool is developed; the electromagnetic field, calculated by a electromagnetic finite element solver is projected on to a mechanical finite element mesh for calculating the vibration field from which is computed the radiated acoustic field. Experimentations led on an automotive electric motor validate the simulation.