• CN:11-2187/TH
  • ISSN:0577-6686

›› 2011, Vol. 47 ›› Issue (10): 101-105.

• 论文 • 上一篇    下一篇

水冷式永磁涡流制动装置的仿真与试验

叶乐志;李德胜;焦兵锋   

  1. 北京工业大学机械工程与应用电子技术学院
  • 发布日期:2011-05-20

Simulation and Experiment of Water-cooled Permanent Magnet Eddy Current Brake

YE Lezhi;LI Desheng;JIAO Bingfeng   

  1. College of Mechanical Engineering and Applied Electronic Technology, Beijing University of Technology
  • Published:2011-05-20

摘要: 为克服传统永磁涡流制动装置的制动性能热衰退问题,采用水冷散热的方法设计出一种新型永磁涡流制动装置。介绍两种永磁涡流制动装置的结构和工作原理,着重分析水冷式结构的冷却循环特点。为防止出现磁饱和现象,利用有限元法分析电磁场并给出装置的磁场分布图。利用磁路法分析装置静态吸力与磁铁厚度之间的关系曲线。通过拟合试验制动力矩与仿真静态吸力数据,得出制动力矩与吸力近似呈线性关系的结论。对两种装置温度场和制动力矩进行试验比较,给出试验曲线和仿真计算曲线,仿真数据与试验数据吻合较好。试验结果表明,采用水冷散热方式使永磁涡流制动装置保持较低的工作温度,持续工作时未发生制动力矩热衰退,装置的持续工作能力得到很大提高。

关键词: 水冷, 温度场, 涡流制动, 永久磁铁

Abstract: In order to overcome the braking performance thermal recession problem of the conventional permanent magnet eddy current brake (PM-ECB), a new type of PM-ECB is designed by using water-cooled method. The structure and working principle of new type PM-ECB are presented, and the characteristics of the cooling cycle system are highlighted. To prevent the magnetic saturation, the magnetic field distribution is obtained by using magnetic field finite element method. The relationship between static suction and magnet thickness is shown by magnetic circuit method. There is nearly linear relationship between test braking torque and calculation suction by fitting data. The temperature and braking torque of the two types of devices are tested. The calculated temperature agrees fairly well with the measured results. The results show that the water-cooled PM-ECB maintains low working temperature, braking performance does not occur thermal recession and the continuing work capacity is improved greatly.

Key words: Eddy current brake, Permanent magnet, Thermal field, Water-cooled

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