TRANSIENT TEMPERATURE FIELD IN ACTIVE THRUST MAGNETIC BEARING

查看全文 作　　者：Sun [1]Shouqun;Geng [2]Haipeng;Guo [3]Keqian

机构地区：[1]College of Mechanical Engineering,University of Shanghai for Science and Technology, Shanghai 200093, China;[2]Institute of Mechatronics and Information Systems, Xi'an Jiaotong University, Xi'an 710049, China;[3]School of Mechanical Engineering & Automation, Beihang University, Beijing 100083, China

出　　处：《Chinese Journal of Mechanical Engineering》索引2005年第18卷第4期,共4页

基　　金：This project is supported by National Natural Science Foundation of China (No.50505030)Key Technology R&D Program of Shanghai Municipal (No.031111001). 摘　　要：A transient temperature field model in a thrust magnetic bearing is built in which the heat resources come mainly from the eddy-current loss of solid cores and the copper loss of coils. The transient temperature field, system temperature rise and the thermo-equilibrium state during the rotor starting-up are calculated considering only the copper loss and the eddy-current loss. The numerical results indicate that the temperatures in coils and in magnets rise rapidly, their thermo-equilibrium states are formed within a short time. The temperatures in a thrust-disk and in a rotor rise slowly, their thermo-equilibrium states are formed after a long period time. The temperatures of the thrust-disk and the rotor are far higher than the temperatures of coils and/or magnets after the thermo-equilibrium state has come into being. 关键词：推力轴承磁轴承磁场瞬时温度场热平衡

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TRANSIENT TEMPERATURE FIELD IN ACTIVE THRUST MAGNETIC BEARING

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