VP17-07 Research on the characteristics and suppression techniques for vibration and noise in amorphous three-dimensional wound core transformer
Creators: Zhulin Dong
Shuaichao Yue
Jiapeng Zhou
Gaoxiangyu Zhou
Xueqing Liu and Yongjian Li ;
Publisher: name: IEEE
Year: 2025

Amorphous materials have excellent magnetic properties, such as high permeability, low iron loss and high coercivity[1]. The three-dimensional wound transformer made of amorphous strip has strong short-circuit resistance because of its completely symmetrical magnetic circuit structure, so amorphous three-dimensional wound transformer is widely used in distribution network[2]. However, due to the obvious magnetostrictive effect of amorphous strip[3], the noise problem is serious. The vibration and noise reduction of amorphous three-dimensional winding transformer needs to be improved. In this paper, a three-dimensional coiled amorphous core transformer is modeled by finite element method considering the magnetostrictive effect and anisotropy of amorphous materials. The study conducts a magnetic-mechanical-acoustic coupling analysis of the transformer, evaluating magnetic field distribution, stress patterns, and sound field characteristics in depth. Based on these findings, the article proposes a method to mitigate vibration noise by applying stress to the iron core, given the sensitivity of amorphous materials to mechanical stress. Subsequently, a multiphysics test platform is established to measure the vibration and noise from different parts such as the core column and yoke of the amorphous three-dimensional wound core transformer. The noise levels around the iron core are measured and analyzed. Comparisons of vibration amplitudes and noise levels before and after applying stress confirm the effectiveness of the proposed vibration and noise suppression method.References: [1]Liu Y, Yi Y, Shao W, et al. , Journal of magnetism and magnetic materials, 330: 119-133(2013). [2]Song W, Han Y, Yang F, et al., IEEE Access, 12: 43958-43967(2024). [3]Liu D, Li J, Noubissi R K, et al. , IET Electric Power Applications, 13(10): 1589-1597(2019).
Amorphous materials have excellent magnetic properties, such as high permeability, low iron loss and high coercivity[1]. The three-dimensional wound transformer made of amorphous strip has strong short-circuit resistance because of its completely symmetrical magnetic circuit structure, so amorphous three-dimensional wound transformer is widely used in distribution network[2]. However, due to the obvious magnetostrictive effect of amorphous strip[3], the noise problem is serious. The vibration and noise reduction of amorphous three-dimensional winding transformer needs to be improved. In this paper, a three-dimensional coiled amorphous core transformer is modeled by finite element method considering the magnetostrictive effect and anisotropy of amorphous materials. The study conducts a magnetic-mechanical-acoustic coupling analysis of the transformer, evaluating magnetic field distribution, stress patterns, and sound field characteristics in depth. Based on these findings, the article proposes a method to mitigate vibration noise by applying stress to the iron core, given the sensitivity of amorphous materials to mechanical stress. Subsequently, a multiphysics test platform is established to measure the vibration and noise from different parts such as the core column and yoke of the amorphous three-dimensional wound core transformer. The noise levels around the iron core are measured and analyzed. Comparisons of vibration amplitudes and noise levels before and after applying stress confirm the effectiveness of the proposed vibration and noise suppression method.References: [1]Liu Y, Yi Y, Shao W, et al. , Journal of magnetism and magnetic materials, 330: 119-133(2013). [2]Song W, Han Y, Yang F, et al., IEEE Access, 12: 43958-43967(2024). [3]Liu D, Li J, Noubissi R K, et al. , IET Electric Power Applications, 13(10): 1589-1597(2019).