摘要
电磁涡流制动是磁浮列车安全紧急状况下的重要保障措施。本文通过解析法建立涡流制动过程感应板的温升模型以及温度对涡流制动力的影响作用模型,并结合具体参数分析温升情况和涡流制动力受影响情况。首先,根据磁路定律推导出涡流制动力与列车速度、励磁电流、气隙、电导率和磁导率之间的数学关系式,并从热平衡方程式出发建立制动过程中感应板的温升模型;再以电导率和磁导率为纽带使涡流制动力与感应板温度相关联,据此对涡流制动力进行温度修正;最后,将温度修正后的涡流制动力与试验得到的结果进行对比,从而验证了模型的有效性。
Electromagnetic Eddy Current Brake （ECB） is an essential safeguard measure for a maglev train in emergency. The inductive board temperature rise mathematical model and interaction model between temperature and ECB force were established with the analytical method. Specific parameters of the maglev train were substituted into the model and the results were analyzed. The mathematical relation between the ECB force and the train speed, excitation current, air gap, electric and magnetic conductivity was derived by the magnetic law. According to the heat balance equation the inductive board temperature rise model was built. The ECB force and inductive board temperature were correlated through the link of conductivity and magnetic permeability. On the basis, the ECB force was modified against the temperature. Finally, the temperature modified ECB force and the experimental result were compared to verify the validity of the model.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2012年第1期29-33,共5页
Journal of the China Railway Society
基金
"十一五"国家科技支撑计划(11504-XF)
关键词
涡流制动力
感应板温升
磁导率
电阻率
eddy current braking force
inductive board temperature rise
magnetic conductivity
specific resistance
