Inductors are the most widely used components in power converters, and their vibration and acoustic noise are problems that cannot be ignored for the stable operation of the system. In order to figure out the vibration and noise performance of nanocrystalline inductors, the coupling finite element model of the electromagnetic-mechanical field is established. The vibration and noise of cut and uncut nanocrystalline inductors are tested under different excitation conditions. The results show that the vibration and noise of the cut core under square wave excitation are stronger than in other cases. And the vibration excited by square wave excitation mostly concentrates on the double frequency of the excitation. The research in this paper can provide a basis for the optimization of vibration and noise of inductors.
