关键词: 磁特性, 硅钢片, 深海应力, 铁心损耗, 有限元, 磁化曲线

Abstract: Magnetic properties are an important factor reflecting the performance of silicon steel sheets. In deep-sea motors, the stator core will withstand huge deep-sea stress, and the magnetic properties of the silicon steel sheets will change, resulting in changes in the iron loss of the deep-sea motors. Aiming at the problem of changes in the magnetic properties of the stator silicon steel sheets for deep-sea motors, the iron loss of the motor was calculated by the finite element method. The stress distribution of the stator core under different pressures was calculated, the calculation results were coupled with the electromagnetic field, and the core loss under different pressure was calculated.A measurement experiment of the magnetic properties of silicon steel sheets under different pressures was set up. The results show that the magnetization curve of silicon steel sheets will shrink under deep sea stress environment. The research results can provide important theoretical references for the design of deep-sea motors.

Key words: magnetic properties, silicon steel sheet, deep-sea stress, core loss, finite element, B-H curve