A new vibration reduction method for reactors using NGMM

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (19) : 254-258.

YAN Rongge 1 , ZHAO Luna 1 ,BEN Tong 1 ,ZHOU Jie1

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Abstract

Noise suppression is one of key factors which must be considered in manufacture and application of reactors, especially, in high voltage transmission networks.In order to solve problems of reactors’ vibration and noise, a vibration reduction method using negative giant magnetostrictive material (NGMM) was proposed.A single-phase iron-core reactor was taken as an example, and the reactor iron-core’s electromagnetic-mechanical coupled model was established.Based on the finite element method, the quantitative analysis was conducted to study vibrations of the reactor iron-core under magnetostrictive effect, Maxwell force and their combined action, respectively.The result showed that influence of magnetostrictive effect on the reactor vibration counteracts that of Maxwell force on the reactor vibration.Then NGMM was filled into air gaps of the reactor.The negative deformation produced by the material under the action of magnetic field was used to eliminate the original mechanical deformation of the reactor.The vibration displacements of the reactor with two different filled materials were compared, the results showed that the reactor’s vibration displacement is reduced by 13%; this study provides a theoretical support for the later design of low noise reactors.

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iron-core reactor / electromagnetic mechanical coupling model / NGMM / electromagnetic vibration

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YAN Rongge 1,ZHAO Luna 1,BEN Tong 1,ZHOU Jie1. A new vibration reduction method for reactors using NGMM[J]. Journal of Vibration and Shock, 2018, 37(19): 254-258

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