基于遗传算法的永磁涡流缓速器优化设计  

Optimization Design of Permanent-Magnet Eddy Current Retarder based on Genetic Algorithm

作　　者：王坚[1] 董舒寻 钱玉倩 钱志华 王念 沈泽宇 Wang Jian;Dong Shuxun;Qian Yugian;Qian Zhihua;Wang Nian;Shen Zeyu(School of Automation,Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]南京工程学院自动化学院

出　　处：《防爆电机》2019年第3期1-4,共4页Explosion-proof Electric Machine

基　　金：江苏省大学生创新创业基金项目(201811276029Y)

摘　　要：永磁涡流缓速器作为车辆新型辅助制动装置,有较为广泛的应用前景。基于遗传算法,以最大制动转矩为优化目标,对永磁涡流缓速器基本模型尺寸进行了优化。优化结果表明,各优化参数收敛在稳定范围内。其中,永磁体背铁和铜盘背铁的厚度在一定范围内可以减少磁漏,增大制动转矩,但过厚会导致装置转动惯量过大,影响动态响应特性,因此存在一个最佳区间。铜盘厚度增加,电阻将减小,但磁阻同时增加,同样存在最佳区间。永磁体厚度直接影响装置磁密大小,过厚将造成磁阻过大,并降低制动转矩。As a new type of auxiliary braking device for vehicles,the permanent-magnet eddy current retarder has a wide application prospect.Based on genetic algorithm,the basic model size of the retarder is optimized by taking maximal braking torque as an optimization objective.The optimized results show that all optimization parameters tend to be within a stable range.In which,the thicknesses of both permanent magnet back iron and copper disk back iron within a certain range can reduce the magnetic leakage and increase the braking torque,but excessive thicknesses will cause the overlarge inertia moment of the device and affect the dynamic response characteristics of it,and thus there is an optimal range.If the thickness of copper disk is increased,the resistance will be decreased,while the reluctance is increased simultaneously,and thus there is an optimal range similarly.The thickness of permanent magnet can directly affects the size of magnetic flux density of the device.The excessive thickness will bring about the overlarge reluctance and then reduce the braking torque.

关 键 词：遗传算法 涡流 参数优化 

分 类 号：TM302[电气工程—电机]