西安交通大学热流科学与工程教育部重点实验室,西安,710049
网络首发:2018-09-10,
纸质出版:2018
移动端阅览
梁雪琪 1, 罗慧强 2, 吴一宁 1, 等. 地铁用电机传热特性数值模拟与实验研究[J]. 西安交通大学学报, 2018,52(9):148-154.
Numerical Simulation and Experimental Investigation on the eat Transfer Characteristics of a Metro Motor[J]. 2018, 52(9): 148-154.
梁雪琪 1, 罗慧强 2, 吴一宁 1, 等. 地铁用电机传热特性数值模拟与实验研究[J]. 西安交通大学学报, 2018,52(9):148-154. DOI: 10.7652/xjtuxb201809020.
Numerical Simulation and Experimental Investigation on the eat Transfer Characteristics of a Metro Motor[J]. 2018, 52(9): 148-154. DOI: 10.7652/xjtuxb201809020.
为研究电机的超温问题
以负载状态的地铁用电动机为例
考虑电机结构的不对称性
建立三维全域物理模型。采用ANSYS软件
旋转部件应用多重旋转坐标系
进行流动与传热耦合仿真计算
探究了额定状态下电机内流场和温度场分布特点
以及转速和环境温度对其流动、传热特性的影响。此外
采用预埋热敏电阻的方法对在额定工况运行的电机定子线圈进行测温
验证了数值模型的可靠性。数值分析结果表明:从纵截面来看
轴向中心平面偏非传动端侧约25 mm处温度最高; 从横截面来看
机箱底部与接线组支撑组件的夹角范围内温度最高
故全域模型比对称模型更合理。此外
随着电机转速增大
定子线圈最高温度近似线性升高
转速平均每升高1 000 r/min
定子线圈最高温度升高6.2%
最高温升升高7.5%; 随着工作环境温度升高
定子线圈最高温度近似线性升高
定子线圈最大温升也有小幅升高
环境温度平均每升高10 ℃
最高温度提高10.1%
最高温升提高2.3%。
To investigate the over-temperature problem of motors
this study took a loaded metro motor as the research object
and established a three-dimensional physical model taking the asymmetry of the motor structure into account. The flow and heat transfer characteristics were computed through coupled simulation using ANSYS. When the flow and temperature fields were under rated condition
the internal flow and temperature fields distribution characteristics of the motor and the influences of rotating speed of motor and ambient temperature on the flow and heat transfer characteristics were investigated. In addition
the experiments used embedded thermal resistors to measure the temperature of the stator coils in the rated condition
which verified the reliability of the numerical model. The numerical results suggest that in the longitudinal section through the axis
the peak temperature emerges at the position about 25 mm from the middle plane at the non-driving end; and in the cross section
the peak temperature emerges in the area between the bottom and the component supporting the input wires. So a complete model is more rational than the symmetrical model. In addition
it is shown that with the increase of rotating speed
the highest temperature of the stator coils rises linearly
and that the peak temperature increases by 6.2% and the maximum temperature rise increases by 7.5% for each speed rise of 1 000 r/min. The highest temperature of the stator coils increases linearly with the ambient temperature
and the highest temperature rise of the stator coils also goes up slightly. The peak temperature increases by 10.1% and the maximum temperature rise increases by 2.3% when the ambient temperature is raised by 10 ℃.
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田亚明,张红光,李高胜,等.自由活塞直线发电机输出性能试验研究.2018,52(3):119-125.[doi:10.7652/xjtuxb2018 03016]
左曙光,张耀丹,钟鸿敏,等.爪极发电机转子结构对电磁力谐波和振动噪声的影响分析.2018,52(3):111-118.[doi:10.7652/xjtuxb201803015]
杨金歌,邓兆祥,周忆,等.车用永磁轮毂电机解析建模与齿槽转矩削弱.2018,52(1):84-91.[doi:10.7652/xjtuxb2018 01013]
王丽华,谢阳阳,张永宏,等.采用深度学习的异步电机故障诊断方法.2017,51(10):128-134.[doi:10.7652/xjtuxb2017 10021]
顾万里,胡云峰,张森,等.有刷直流电机自适应滑模控制器设计与实验.2017,51(9):112-117.[doi:10.7652/xjtuxb2017 09016]
李法敬,高建民,史晓军,等.电主轴轴心冷却用环路热虹吸管的传热特性.2017,51(7):90-97.[doi:10.7652/xjtuxb 201707014]
左曙光,张耀丹,阎礁,等.考虑定子各向异性的永磁同步电机振动噪声优化.2017,51(5):60-68.[doi:10.7652/xjtuxb 201705010]
徐益飞,张鹏,张博,等.异步电机全分数阶矢量控制系统的设计与实现.2017,51(3):111-115.[doi:10.7652/xjtuxb2017 03019]
刘小勇,郑爱红,蒋峰,等.一种提高异步电动机转矩性能的直接转矩控制方法.2016,50(12):12-17.[doi:10.7652/xjtuxb201612003]
王悍枭,刘凌,吴华伟.改进型滑模观测器的永磁同步电机无传感器控制策略.2016,50(6):104-109.[doi:10.7652/xjtuxb201606016]
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