控制棒驱动机构磁路饱和特性分析  

Analysis of Magnetic Saturation Characteristics of Control Rod Drive Mechanism

作　　者：杨云[1] 于天达 陈杨明[1] 李晴朝 刘彦霆 徐奇伟 罗凌雁[1] Yang Yun;Yu Tianda;Chen Yangming;Li Qingzhao;Liu Yanting;Xu Qiwei;Luo Lingyan(State Key Laboratory of Power Transmission Equipment&System Security and New Technology,Chongqing University,Chongqing,400044,China;Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]重庆大学输配电装备及新技术国家重点实验室,重庆400044 [2]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213

出　　处：《核动力工程》2023年第3期138-143,共6页Nuclear Power Engineering

基　　金：国防科技工业核动力技术创新中心项目(HDLCXZX-2021-ZH-016)。

摘　　要：利用理论分析和有限元分析(FEA)相结合的方法,研究了控制棒驱动机构(CRDM)中磁路饱和对电磁参数以及磁路参数的影响。通过建立CRDM等效磁路(EMC)模型,推导获取磁路参数的方法,并基于FEA获得了CRDM电磁参数以及磁路参数随电流和主气隙长度的变化趋势。分析结果表明,主磁路剩余磁阻和线圈电感受磁路饱和的影响较大;CRDM漏磁系数与磁路饱和的关系较小,但受主气隙长度的影响较大;主气隙磁阻的计算应考虑气隙磁通边缘效应。本研究为CRDM的EMC模型优化提供了理论依据。In this paper,the impact of magnetic saturation on the electromagnetic parameters and magnetic circuit parameters of the control rod drive mechanism(CRDM)is studied by combining theoretical and finite element analysis(FEA).The method of obtaining magnetic circuit parameters is derived by establishing an equivalent magnetic circuit(EMC)model of the CRDM.The change law of the electromagnetic and magnetic circuit parameters of the CRDM with the current and length of the main air gap is obtained based on FEA.The results show that magnetic saturation significantly affects the main magnetic circuit's residual reluctance and inductance.The flux leakage coefficient of the CRDM has little relationship with the magnetic saturation but is greatly affected by the length of the main air gap.The reluctance of the main air gap should consider the air gap flux edge effect.This study provides a theoretical basis for the EMC model optimization of CRDM.

关 键 词：控制棒驱动机构(CRDM) 磁路饱和 等效磁路(EMC)模型 有限元分析(FEA) 

分 类 号：TL364[核科学技术—核技术及应用]