基于有限元分析的船用柴油机磁性补偿技术研究

Research on magnetic compensation technology of Marine diesel enginebased on finite element analysis

摘要:

为研究船用柴油机的磁性补偿问题,通过有限元仿真计算来指导消磁设计工作。在地磁环境下,利用Ansys Maxwell软件,建立某型柴油机的有限元仿真模型,进行柴油机感应磁场空间分布的计算。仿真计算结果与实测柴油机磁场进行对比,其误差不大于10%,在允许误差范围之内。采用补偿线圈的方式对柴油机的磁场进行补偿,通过优化设置补偿电流,柴油机的磁场最大值从336nT减小到50nT,降低约85%。

Abstract:

In order to study the magnetic compensation of Marine diesel engines, finite element simulation is used to guide the degaussing design work. In the geomagnetic environment, a finite element simulation model of a diesel engine is established by using Ansys Maxwell software, to calculate the spatial distribution of the induced magnetic field of the diesel engine. compared with the measured magnetic field of the diesel engine, the error is not more than 10%,within the error range allowed. and the compensation coil is used to compensate the magnetic field of the diesel engine. By optimizing the setting of the compensation current, the maximum magnetic field of the diesel engine is reduced from 336nT to 50nT, reducing about 85%.