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浙江大学学报(工学版)
浙江大学学报(工学版)
电气工程     
计及轴承传热的高密度永磁电机温升计算
张晗妮1, 张琪1, 黄苏融1, 张舟云1,2
1. 上海大学 机电工程与自动化学院,上海200072； 2. 上海电驱动股份有限公司,上海200240
Temperature calculation for high power density permanent magnet motor with consideration of heat transfer in bearings
ZHANG Han ni1, ZHANG Qi1, HUANG Su rong1, ZHANG Zhou yun1,2
1. School of Electromechanics and Automation,Shanghai University, Shanghai 200072, China；2. Shanghai Electrodrive Limited Liability Company, Shanghai 200240, China
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摘要：

以电机系统常用的油浴润滑单列深沟球轴承为例,对轴承的传热情况进行研究.基于传热学和流体力学理论,提出一种轴承的热网络模型及相应参数的计算方法.研究当轴承滚动时其内部不同区域润滑液复杂的运动状态及不同流体的热参数计算方法.分析轴承承载后滚珠、滚道之间的接触变形以及接触处的传热.在考虑轴承摩擦损耗的基础上建立能够较好模拟轴承实际热传导过程的热网络模型.将轴承热网络模型与电机系统热网络模型进行结合,对一台高密度永磁电机进行温升计算.结果表明：轴承是永磁电机转子部件散热的重要路径,且电机转速越高,轴承对电机转子部分的温度影响越大,所提出的模型可以提高转子部件热性能评估的准确性.样机的温升计算数据与实验值基本吻合,验证了所提出的轴承热网络模型和参数计算方法的有效性和可行性.
Abstract:

Hear transfer in bearing was explored by taking oil bathed deep groove ball bearings as example which was widely used in electric motor system. A thermal network model and the calculation method for the corresponding parameters were proposed based on the heat transfer theory and the hydromechanics theory. The complex flow of the lubricant fluid in loaded bearings and the thermal parameter calculation method for different fluids were studied. The contact deformation between the balls and the raceway and the heat transfer between the contact zones in loaded bearings were also studied. Considering the frictional loss of bearing, the thermal network model was built, which could well simulate the real heat transfer in bearings. Combine this model with the thermal network model of electrical motor to calculate the temperature rise of a high power density permanent magnet motor. The calculation results show that the higher the motor speed is, the greater the influence of the bearings is on the temperature of the motor rotor. Therefore, bearings are the crucial paths for the rotor heat transfer. The proposed model can improve the thermal performance assessment precision of the rotor components. The good agreement between the calculation data and the test data verifies the effectiveness and the feasibility of the thermal network model for bearings and the calculation method for the parameters.
出版日期: 2015-12-31
:  TM 351  
基金资助:

国家“863”高技术研究发展计划资助项目（2012AA110802）.
通讯作者: 张琪,女,教授,博导. ORCID： 0000 0003 0090 853X.     E-mail: qizhang@staff.shu.edu.cn
作者简介: 张晗妮（1989—）,女,硕士生,从事永磁电机温度场仿真技术研究. ORCID： 0000 0001 5826 4840. E-mail: smile.hn@163.com
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引用本文:

张晗妮, 张琪, 黄苏融, 张舟云. 计及轴承传热的高密度永磁电机温升计算[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2015.12.022.

ZHANG Han ni, ZHANG Qi, HUANG Su rong, ZHANG Zhou yun. Temperature calculation for high power density permanent magnet motor with consideration of heat transfer in bearings. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2015.12.022.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2015.12.022    或    http://www.zjujournals.com/eng/CN/Y2015/V49/I12/2410

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