空心电抗器涡流场的B样条有限元数值分析

本文从微分－积分型的数学模型出发，采用Ｂ样条有限元法，分析了具有多股并联导线结构的空心电抗器涡流场分布。从而在计及其载流线匝内趋肤和邻近效应的基础上，就电抗器设计、运行所涉及的涡流损耗、热源分布和有效电阻、电感等电磁参数的数值计算，构造了较理想的计算机辅助设计和分析的工程算法。

The B-Spline FEM Analysis of Reactor Eddy Current Field

Based on the integrodifferential equation field formulation,the eddy current field of bar and parallel multiconductor reactor are analyzed by B-Spline FEM. In this analysis the external sourcecurrent in each conductor is taken into account to ensure the uniqueness of numerical solution.Owing to the inherent property of the B-Spline FEM,i. e. it not only gives more accurate potential values and field vector values, but also maintains the continuity of field vectors,the eddy current loss of the coil,the heat source distribution,effective resistance and inductance,etc.are calculated giving satisfactorily accurate results.