摘要
建立了平行对极电磁铁的三维模型，依据电磁效应原理，在齐次狄利克雷和诺依曼边界条件下，使用有限元法模拟仿真，得到了不同电流强度下，电磁铁对极间的三维磁感应强度分布特性，并用实验进行验证。结果表明：对极间磁感应强度在X和Z方向呈“V”型分布，在Y方向呈倒“V”形分布，模拟仿真与实测结果变化趋势基本一致；在同一参数下，测量基准面左右两侧的磁感应强度值是中心区域的2～5倍，电磁铁内侧的磁感应强度值大于外侧，且与基准面距离的平方成反比；磁感应强度均值在水平方向与位移的平方成正比。
A three-dimensional model for parallel magnetic poles electromagnet was established based on the principle of electromagnetic effects. The homogeneous Dirichlet and Neumann boundary conditions were applied in the finite element analysis. The distribution characteristics of three-dimensional magnetic flux density between poles were obtained under different current intensity, and the simulation results were verified by experiments. The results indicate that the magnetic flux density distribution of poles at X and Z direction is V-shaped, and inverted V-shape at Y direction. The trend of simulation is broadly consistent with experimental results. In the same parameters, the magnetic flux density on the left and right sides of measurement datum plane is 2 to 5 times of that in central area. The magnetic flux density inside the electromagnet is greater than that of the outside, and it is inversely proportional to the square of the distance from measurement point to the datum plane. The average magnetic flux density is pro- portional to the square of displacement in horizontal direction.
出处
《科学技术与工程》
北大核心
2014年第2期27-31,共5页
Science Technology and Engineering
关键词
平行对极
电磁铁
磁感应强度
分布特性
parallel magnetic poles
electromagnet
magnetic flux density
distribution character
