When designing electric drives, current processes primarily focus on energy efficiency. This might affect acoustic performance, especially when structural resonances coincide with electro-magnetic excitation frequencies. This white paper explains the significant influence of radial forces on the noise signature next to the effects of torque ripple. By performing vibro-acoustic simulation and analysis, engineers can capture the mechanisms and major contributors of the acoustic signature of an electric motor to accurately predict related NVH behavior early in the design cycle.
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