计及结构特征的TEFC感应电动机温度敏感性研究

发布时间：2018-01-01 03:01

  本文关键词：计及结构特征的TEFC感应电动机温度敏感性研究　出处：《机械工程学报》2015年24期 　论文类型：期刊论文

  更多相关文章： 感应电动机 结构敏感性 三维温度场 有限体积元法

【摘要】：为研究小型感应电动机温升分布与其结构特性的数值关系,以一台TEFC(Total enclosed fan-cooled)感应电动机为研究对象,根据流体力学和传热学基本理论,并结合感应电动机定子绕组散下线等结构特点,建立包含离心式风扇及接线盒等结构部件的三维流动与传热耦合数学模型及物理模型,采用有限体积元法,对其三维流体场及温度场进行耦合计算,在利用试验数据佐证本研究精准性的基础上,详细地阐明电动机内部温升随结构特性的敏感性,结果表明,机壳底脚上的横向拉筋对电动机内部的温升分布有着较大的影响,导致与其位置对应的定子绕组存在温升二次升高的现象,同时,转子上具有自力性的风扇对定子绕组端部表现出良好的散热效果,以上结论为中小型电动机的机械结构优化提供了一定参考。
[Abstract]:In order to study the numerical relationship between the temperature rise distribution and the structural characteristics of small induction motors. A TEFC(Total enclosed fan-cooled induction motor is studied according to the basic theories of fluid mechanics and heat transfer. Combined with the characteristics of the stator winding of induction motor, the mathematical model and physical model of three-dimensional flow and heat transfer coupling including centrifugal fan and junction box are established, and the finite volume element method is used. On the basis of the experimental data to prove the accuracy of this study, the sensitivity of the internal temperature rise with the structure characteristics of the motor is explained in detail. The results show that the coupling calculation of the three-dimensional fluid field and the temperature field of the motor shows that the temperature rise of the motor is sensitive to the structural characteristics. The transverse tension on the bottom foot of the chassis has a great influence on the temperature rise distribution of the motor, which leads to the phenomenon of secondary rise in the stator winding corresponding to the position of the stator, and at the same time. The self-acting fan on the rotor has a good heat dissipation effect on the end of the stator winding. The above conclusion provides a certain reference for the optimization of the mechanical structure of the small and medium-sized motor.
【作者单位】： 哈尔滨理工大学电气与电子工程学院;
【基金】：国家自然科学基金(51277045) 黑龙江省青年科学基金(QC2012C109) 黑龙江省普通高等学校新世纪人才(1254-NCET006) 黑龙江省教育厅基金(12531112)资助项目
【分类号】：TM346
【正文快照】： 0前言*笼型感应电动机因其具有结构简单、运行可靠以及制造成本低廉等特点,所以应用非常广泛。由于军事舰船需要面对极其复杂的海上环境,不仅要求其要有较好的稳定性,还要有较高的效率,在动力舱内,工作空间小、热源密度大导致电动机散热 非常困难,而在电动机的设计过程中,常，

本文编号：1362616