Abstract
Noise annoyance generated by electrical machines is evaluated based on the sound power level (SPL) parameter measured in a reverberationroom or using a semi-anechoic chamber. However, when the machine is assembled in a base plate, the SPL can be altered depending on the new system configuration and the way the machine is assembled in the final product. The vibration generated in the electrical machine is transmitted to the base resulting in noise at the surface. The aim of this study was to model the suspension of a general machine assembled in a flexible base and minimize the vibratory power flow transmitted to the base through an optimization process, taking into account parameters such as the spring inclination, stiffness, and suspension damping. Decreasing the power flow to the base results in a reduction in the global levels of noise and vibration at the base plate. Noise annoyance generated by electrical machines is evaluated based on the sound power level (SPL) parameter measured in a reverberationroom or using a semi-anechoic chamber. However, when the machine is assembled in a base plate, the SPL can be altered depending on the new system configuration and the way the machine is assembled in the final product. The vibration generated in the electrical machine is transmitted to the base resulting in noise at the surface. The aim of this study was to model the suspension of a general machine assembled in a flexible base and minimize the vibratory power flow transmitted to the base through an optimization process, taking into account parameters such as the spring inclination, stiffness, and suspension damping. Decreasing the power flow to the base results in a reduction in the global levels of noise and vibration at the base plate.
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