300KW单极超导电机电磁场的分析研究

Magnetic Field Calculation for A 300KW Homopolar Superconducting D.C Machine

本文利用有限元方法对一３００ＫＷ单极超导电机内电磁场进行了系统地分析，给出了额定励磁、空载运行时，电机气隙、集流排、超导磁体和转子等位置的磁场分布，并对计算所得的空载特性曲线及集电环表面的磁场大小与实验测量结果进行了比较，证明了数值计算的准确性和可靠性．所得到的计算结果对于提高电机效率、充分利用超导材料和磁屏蔽系统的设计等工作具有重要的参考价值．

In this paper,the magnetic field in a 300KW homopolar Superconducting D. C machine is investigated by using finite element method.The Distributions of the magnetic held arc given in air gap. iron core. supcrconducting magnet and armaturc in no-load. nominal state.By comparing the calculated results with the results obtained by test,the accuracy and crcditability of the numerical calculation is shown. All these calculated results are of particular value to design the magnetic screen system. improve the machine working characteristics, raise the efficiency. reducc the superconductor consumption.