Abstract
The noise of three-phase low voltage and heavy current busbar bridge system is studied.First,electromagnetic field is calculated by using edge finite element method.Then, the f'mite element and the boundary element method are com- bined together to analyze the vibration and acoustic characteris- tics of the system by using node electromagnetic forces as load. Based on the analysis,methods are proposed to reduce the noise The results of numerical simulations and experiments show that the noise can be reduced effectively by using these methods.
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