neobjavljeni prilog sa skupa
This paper presents a vibration and vibro-acoustic noise simulation methodology for a three-phase
synchronous generator with salient poles. The objective of this study is to explore the time-domain numerical analysis
approach to predict stator core vibrations and structure-borne noise. This methodology aims to support decision-making
during the machine design and ensure that the stator core vibration and noise performance comply with the requirements
specified in the tender documentation or as outlined in the (IEC 60034-33:2022) standard.
The simulation results are validated on a machine that was produced in three different design variations. Experimental
validation is conducted for a target frequency spectrum and multiple operational load conditions.
The methodology consists of the following steps: vibration and noise measurement on different machine design variations
and operational load conditions, numerical simulation of electromagnetic forces on stator teeth and coils using 2D (or 3D)
models, pre-stressed modal analysis, numerical time-domain transient vibration analysis, assessment of structure-vibration
generated sound levels (ISO/TS 7849-2:2009) and correlation between simulated and measured data.
Electric machines, Electromagnetic forces, Finite element method, Vibrations, Noise, Measurement
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