磁力联轴器隔离套涡流场与温度场的数值计算

作者：王梦文 日期：2010-09-08/span> 浏览：3212 查看PDF文档

磁力联轴器隔离套涡流场与温度场的数值计算

王梦文

（鸡西大学 电气与信息工程系，黑龙江  鸡西  158100）

摘要：为了满足永磁磁力联轴器(PMSC)转矩传递过程中的介质无泄漏要求，在PMSC内外转子间增加了隔离套，隔离套处在变化的磁场中，其内部将产生涡流，导致涡流损耗和隔离套的发热问题，采用二维有限元法对PMSC隔离套区域涡流场进行了计算,得到了隔离套内的涡流和涡流损耗。在此基础上结合流体相似理论得到了散热系数,并对所建立的PMSC三维暂态温度场进行了数值计算,分别得到了隔离套内涡流损耗、隔离套平均温度与隔离套材料电阻率及PMSC转速之间的关系曲线，为磁力联轴器的设计提供了参考依据。
关键词：磁力联轴器；隔离套;涡流场;暂态温度场
中图分类号：TH131；TH123
文献标识码：A文章编号：1001-4551(2010)08-0039-05

Calculation and analysis of eddy-current field and temperature field for 
insulation shell of permanent magnet shaft coupling
WANG Meng-wen
（Department of Electrical and Information Engineering, Jixi University,Jixi  158100  China, China）

Abstract: In order to solve the problem of medium leakiness of permanent magnet shaft coupling (PMSC) at its running, an insulation shell was mounted between the inside rotor and outside rotor of PMSC. When PMSC was working, the magnet field in insulation shell would alternate and resulted in the eddy current, which led to the problem of eddy current loss and temperature rise of insulation shell. The eddy current field of PMSC insulation shell was calculated, using 2D finite element method, and the eddy current distribution and eddy current loss of insulation shell were obtained. Based on the analysis, using the coefficient of heat emission obtained according to the theory of fluid similarity, the 3D transient temperature field of PMSC was calculated. The curves between eddy loss, temperature of insulation shell and material resistivity of insulation shell, and rotate speed of PMSC were gained. The research proves the reference for the design of the PMSC.
Key words: permanent magnet shaft coupling(PMSC); insulation shell; eddy-current field; temperature field