摘要
在涡流区采用修正向量磁位（ Ａ＊） ，非涡流区采用标量磁位（ψ） ，将体分布的激磁电流合理假设为面分布电流，用Ａ＊ － ψ法数学模型进行有限元计算。
Analysing and calculating ofthe 3Dnonlinearinstantaneous magnetic field is difficult.This paper can effectively deal with the difficulty asfollows :applying the modified vector magnetic potential A* in eddy region ,using scalar magnetic potential ψin noneddy region ,and supposing volume distributed exciting cur rent as surface distributed exciting currentreasonably ,then the whole region can be calculated with A* - ψ mathematical model.
关键词
磁场
数学模型
电磁铁
瞬态磁场
magnetic field ,calculation , mathematical model
