磁轨制动器励磁线圈耐热等级分析  

Heat Resistance Grade Analysis of the Excitation Coil of the Magnetic Rail Brake

作　　者：李江波 袁文琦 王明星 李敬 陈树亮 LI Jiangbo;YUAN Wenqi;WANG Mingxing;LI Jing;CHEN Shuliang(CRRC Qingdao Sifang Rolling Stock Research Institute Co.,Ltd.,Qingdao 266031 Shandong,China)

机构地区：[1]中车青岛四方车辆研究所有限公司,山东青岛266031

出　　处：《铁道机车车辆》2022年第2期75-78,共4页Railway Locomotive & Car

摘　　要：独立于轮轨黏着的磁轨制动已广泛应用于有轨电车及部分高速动车组的紧急制动,其励磁线圈属发热元件,为保证设备安全必须选择具备足够耐热等级的导线。文中介绍了磁轨制动器的工作原理及结构,分析了线圈电阻、温升、功率的计算方法,并针对2种极端工况进行了线圈温度、功率、电阻、电流的计算,结果表明线圈最高温度约170℃,选用H级(180℃)的导线可以满足设计要求。The magnetic rail brake, which is independent of wheel rail adhesion, has been widely used in the emergency braking of trams and some High-speed EMUs. The excitation coil is a heating element, in order to ensure the safety of the equipment, it is necessary to select the conductor with enough heat-resistance-grade. The working principle and structure of the magnetic rail brake are introduced in this paper, as well as the calculation methods of coil resistance, temperature rise and power. The coil temperature, power, resistance and current are calculated under two extreme conditions, using the method above. The calculation results show that the maximum temperature of the coil is about 170 ℃, so the H-class(180 ℃) conductor can meet the design requirements.

关 键 词：磁轨制动器 线圈温升 耐热等级 计算分析 

分 类 号：U270.35[机械工程—车辆工程]