Optimization design and braking performance analysis of eddy current retarder

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Jan.2024, Vol.47 No.1: 21-27

DOI: 10.3969/j.issn.1003-5060.2024.01.004

Authors

ZHENG Hongmei $ ^{1} $, BIAN Shangqi $ ^{1} $, ZHA Chuanting $ ^{2} $, SHEN Hao $ ^{1} $, CHEN Hua $ ^{3} $

(1. School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, China; 2. Hefei Yiheng Intelligent Technology Co., Ltd., Hefei 230022, China; 3. Shanghai Telma Automotive Braking System Co., Ltd., Shanghai 201300, China)

Abstract and Keywords

Abstract: Based on the demagnetization effect, the mathematical calculation model of eddy current retarder was established, the magnetic induction intensity of closed magnetic circuit was calculated by eddy current conversion coefficient method, and the expression of electromagnetic braking torque of eddy current retarder was derived. Based on the existing products of an automotive braking system company, the circular pole was optimized as a fan-shaped pole, and Maxwell finite element simulation software was used to simulate the braking torque of the new type of eddy current retarder model with different lengths of fan-shaped pole. Finally, the new eddy current retarder was compared with the original product through finite element simulation and bench test. The results show that the braking torque of the new eddy current retarder is basically the same as that of the traditional eddy current retarder at different speeds, and the braking performance is obviously improved. The maximum error of simulation and test results is less than 5%, which proves the effectiveness of the new eddy current retarder and the correctness of optimization design.

Keywords: eddy current retarder; fan-shaped pole; braking torque boost; simulation; bench test

作者信息

郑红梅 $ ^{1} $，边尚琪 $ ^{1} $，查传婷 $ ^{2} $，沈浩 $ ^{1} $，陈华 $ ^{3} $

（1. 合肥工业大学机械工程学院，安徽合肥 230009；2. 合肥亿恒智能科技有限公司，安徽合肥 230022；3. 上海泰乐玛汽车制动系统有限公司，上海 201300）

摘要和关键词

摘要: 文章在考虑去磁效应的基础上建立电涡流缓速器数学计算模型, 采用涡流折算系数法求出闭合磁路磁感应强度, 推导出电涡流缓速器电磁制动力矩表达式; 在某汽车制动系统有限公司现有产品的基础上, 将圆形极柱优化设计为扇形极柱, 并利用 Maxwell 有限元仿真软件对不同长度扇形极柱的新型电涡流缓速器模型的制动力矩进行仿真分析; 将最终确定的新型电涡流缓速器通过有限元仿真和台架实验与原产品进行对比验证。结果表明: 新型电涡流缓速器与传统电涡流缓速器的制动扭矩在不同转速下变化的规律基本一致, 制动性能有明显提升; 仿真结果和实验结果最大误差小于 5%, 证明了新型电涡流缓速器的有效性和优化设计的正确性。

关键词: 电涡流缓速器；扇形极柱；制动力矩提升；仿真分析；台架试验

Funding

国家自然科学基金青年科学基金资助项目（51705499）

合肥工业大学学报(自然科学版)

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