自励式液冷电磁缓速器的数值模拟与实验研究  

Numerical Simulation and Experimental Study on Self-excited Liquid-cooled Electromagnetic Retarder

作　　者：张凯[1] 李德胜[1] 尹汪雷[1] 郑然[1] 

机构地区：[1]北京工业大学机械工程与应用电子技术学院,北京100124

出　　处：《汽车工程》2015年第6期699-706,共8页Automotive Engineering

基　　金：国家自然科学基金(51277005)资助

摘　　要：为克服传统电涡流缓速器持续制动时制动转矩热衰退严重的问题和节约能源,提出一种新型自励式电磁液冷缓速器结构。运用有限元法分别对该缓速器电磁场和制动性能进行分析,应用有限体积法对缓速器瞬态流场-热场进行数值模拟。通过台架试验对缓速器特性进行测试,结果表明,仿真结果与实测数据吻合较好,制动转矩可达1 600N·m,且在持续工作时制动转矩热衰退在5%以下,满足车辆需求。In order to overcome the problem of severe thermal decay of braking torque in sustained braking of conventional eddy current retarder and save energy, a novel structure of liquid-cooled self-excited electromagnetic retarder is proposed. The electromagnetic field and the braking performance of the retarder are analyzed with finite element method and numerical simulations on its transient flow field and thermal field are conducted by using finite volume method. The characteristics of the retarder are also measured on a test bench. The results show that the sim- ulated results well agree with test data with a braking torque up to 1,600N ·m and its thermal decay less than 5% in continuous braking condition, meeting the requirements of heavy vehicles.

关 键 词：电磁缓速器 液冷 自励式 数值模拟 实验研究 

分 类 号：U463.5[机械工程—车辆工程]