摘要
电磁装置的发热问题是影响磁悬浮系统工作稳定的重要因素之一,本文首先分析了装置的发热机理,采用ANSYS软件建立电磁装置的三维有限元模型,并将装置中动铁芯随大轴旋转时与空气产生的风摩擦损耗包含在模型中。通过瞬态仿真分析,计算出电磁装置的温度分布及温度随时间的变化趋势,由计算结果发现电磁装置长期运行后其内部温度较高,超出了系统内部正常工作的温升允许范围。继而提出冷却方案,即采用冷却管进行散热,并初步设计冷却管的安装位置、形状、参数等。最后进行仿真计算,结果表明其冷却效果非常明显,符合温升允许要求。热分析中计及了热参数随温升的变化。
The temperature rise of electromagnetic device is a fatal factor that affects its service performance. First ly, the heating mechanism of the device is analyzed, and the 3D finite element model of electromagnetic device is established by ANSYS software which contained air loss friction generated by the movecore of device rotation with shaft in the model. According to the transient simulation analysis, the electromagnetic device temperature distribu tion and the temperature trend over time are calculated. From the calculated results, it can be found that the inter nal temperature of magnetic device is so high in the longrunning that is beyond the temperature rise allowable range. Then a cooled program is proposed that makes the temperature down by cooling pipe, and the cooling pipe installation location, shape, parameters, etc. are designed preliminary. Finally, from the simulation results, it can be found that its cooling effect is very obvious, and can meet the requirements of the allowable temperature rise. The thermal parameters which change with temperature rise are considered in thermal analysis.
出处
《电工电能新技术》
CSCD
北大核心
2013年第4期59-64,共6页
Advanced Technology of Electrical Engineering and Energy
基金
国家自然科学基金(51177039)
国水利水电科学研究院开放研究基金(200954211)资助项目
关键词
磁悬浮
电磁装置
温度场
有限元分析
冷却管
温升
magnetic levitation
electromagnetic device
temperature field
finite element analysis
cooling pipe
temperature rise
