考虑磁致伸缩效应的可控饱和电抗器电磁振动分析

Analysis on electromagnetic vibration of controllable saturable reactor considering magnetostrictive effects

可控饱和电抗器由于其优良的工作特性,在电力系统和有色冶金等多种行业得到了广泛的应用。作为补偿用电设备,可控饱和电抗器能连续不断地调整其电抗值,改变其容量。由于可控饱和电抗器铁心结构的特殊性及交直流共同作用的工作特点,铁心的振动噪声较大,其振动噪声问题成为可控饱和电抗器应用发展的制约因素之一。本文基于开源型有限元分析软件建立了磁路-机械耦合模型,考虑电磁力与磁致伸缩效应作用,完成了不同工作状态下铁心磁场和振动的数值分析,得到了其磁场、振动的分布情况,为在设计上减少电抗器振动噪声提供理论依据和计算方法。

Due to its excellent operating characteristics, controllable saturable reactor has been widely used in many kinds of industries, such as power systems and non-ferrous metallurgy. As compensation for electrical equipment, controllable saturable reactor can continuously adjust its reactance and change its capacity. However, due to the special structure and the working characteristics of controllable saturable reactor, vibration and noise of the core are larger. The vibration and noise problem becomes one of the restricting factors of controllable saturable reactor applications. Based on open source model finite element analysis software this paper establishes a magnetic circuit-mechanical coupling model. Considering the electromagnetic and magnetostrictive force numerical analysis of the mag- netic field and vibration under different working conditions is completed. The magnetic flux density distribution, core deformation, the magnitude of vibration displacement and vibration acceleration are obtained. The paper provides the theoretical basis and calculation method on the design of reactor to reduce the vibration.