全轴向通风无刷励磁机三维温度场数值模拟
|
摘要
为获得全轴向通风无刷励磁机中定转子部件及同轴布置的单侧整流盘区空气温度分布特点,建立其整机流固耦合物理模型,基于计算流体动力学原理,采用有限体积法,给定边界条件,对励磁机整机三维湍流流动及传热控制方程进行数值求解与分析。结果表明:整流盘附近空气温度50～72℃,远低于二极管工作环境允许的极限温度110℃,相同截面位置转子线棒温度高于定子线棒,转子风沟空气温度较高。数值模拟结果与测点间的温度值误差较小,其相对误差为-4. 5%;采用有限体积法与工厂采用等效热网络法所得励磁机定转子部件体平均温度,相对误差绝对值均小于10%,证明本文数值计算结果的准确性。研究结果可为同类型励磁机风路设计提供参考。
In order to obtain the characteristics of the air temperature distribution in the stator and rotor parts of the full axial ventilation brushless exciter and the single side rectifier arranged coaxially,the fluid-solid coupling physical model was established. Finite volume method was adopted,boundary conditions were given,and the calculation and analysis of exciter three dimensional turbulent flow and temperature field is conducted based on computational fluid dynamics. The results show that the air temperature50 ～ 72 ℃ near the rectifier is much lower than the allowable temperature 110 ℃ of the diode working environment,rotor bar temperature is higher than stator bar in same section position,and the air temperature of rotor wind channel is higher than that of stator. The error-4. 5% between the numerical simulation results and the measured values is small,the error 10% between the finite volume method and the equivalent thermal network method for obtaining the average temperature of the stator and rotor is also small,both of which prove the accuracy of the numerical results. The results above provides reference for the design of the same type of exciter.
In order to obtain the characteristics of the air temperature distribution in the stator and rotor parts of the full axial ventilation brushless exciter and the single side rectifier arranged coaxially,the fluid-solid coupling physical model was established. Finite volume method was adopted,boundary conditions were given,and the calculation and analysis of exciter three dimensional turbulent flow and temperature field is conducted based on computational fluid dynamics. The results show that the air temperature50 ～ 72 ℃ near the rectifier is much lower than the allowable temperature 110 ℃ of the diode working environment,rotor bar temperature is higher than stator bar in same section position,and the air temperature of rotor wind channel is higher than that of stator. The error-4. 5% between the numerical simulation results and the measured values is small,the error 10% between the finite volume method and the equivalent thermal network method for obtaining the average temperature of the stator and rotor is also small,both of which prove the accuracy of the numerical results. The results above provides reference for the design of the same type of exciter.
引文
[1]李俊卿,王丽慧.汽轮发电机空心股线堵塞时定子温度场的数值仿真[J].中国电机工程学报,2009,29(12):70-74.LI Junqing,WANG Lihui.Numerical simulation of temperature field in turbo-generators stator on cooling water blockage[J].Proceedings of the CSEE,2009,29(12):70-74.
[2]王艳武,杨立,陈翾,等.异步电机转子三维温度场及热应力场研究[J].电机与控制学报,2010,14(6):27-32.WANG Yanwu,YANG Li,CHEN Xuan,et al.Study on 3D thermal field and thermal stress field of the induction motor rotor[J].Electric Machines and Control,2010,14(6):27-32.
[3]张凤阁,杜光辉,王天煜,等.1.12MW高速永磁电机不同冷却方案的温度场分析[J].电工技术学报,2014,29(Z):66-72.ZHANG Fengge,DU Guanghui,WANG Tianyu,et al.Temperature field analysis of 1.12MW high speed permanent magnet machine with different cooling schemes[J].Transactions of China Electrotechnical Society,2014,29(Z):66-72.
[4]M G Mc Ardle,D J Morrow.Noninvasive detection of brushless exciter rotating diode failure[J].IEEE Institute of Electrical and E-lectronic Engineers,2004,19(2):378-382.
[5]郝亮亮,王善铭,邱阿瑞,等.多相无刷励磁系统旋转整流器故障的仿真与识别[J].电工技术学报,2012,27(4):138-144.HAO Liangliang,WANG Shanming,QIU Arui,et al.Simulation and recognition for rotary rectifier fault of multi-phase brushless excitation system[J].Transactions of China Electrotechnical Society,2012,27(4):138-144.
[6]Richard C Schaefer.Brushless rotating exciter conversion to main field static exciter system[J].IEEE Institute of Electrical and E-lectronic Engineers,2013,172:1-5.
[7]孙富.西门子同步电机无刷励磁系统改造[J].电工技术,2011(10):57-58.SUN Fu.Modification of brushless excitation system for SIEMENSsynchronous motor[J].Electric Engineering,2011(10):57-58.
[8]孙维炎,黄浩.空冷系列汽轮发电机上的无刷励磁机研制[J].上海大中型电机,2009(2):14-16.SUN Weiyan,HUANG Hao.Development of brushless exciter on air cooled turbo generator[J].Shanghai Medium and Large Electrical Machines,2009(2):14-16.
[9]路义萍,付余,张万全,等.一种新型无刷励磁机的三维热流场分析[J].中国电机工程学报,2014,34(27):4699-4705.LU Yiping,FU Yu,ZHANG Wanquan,et al.Analysis of three dimensional thermal and flow fields for a new brushless exciter[J].Proceedings of the CSEE,2014,34(27):4699-4705.
[10]路义萍,张东学,孙博,等.无刷励磁机通风冷却数值模拟研究[J].电机与控制学报,2016,20(6):26-31.LU Yiping,ZHANG Dongxue,SUN Bo,et al.Numerical simulation of ventilation cooling system for brushless exciter[J].Electric Machines and Control,2016,20(6):26-31.
[11]Chhavi Nagpal,Prateek K.Jain,Vikram Kumar Reddy V.Rotor vent Hole shape studies on totally enclosed fan cooled motor[C]//2012 IEEE International Conference on power Electronics,Drives and Energy Systems,2012,Bengaluru,4673-4508.
[12]张秀凤.永磁同步牵引电动机温度场研究[D].哈尔滨理工大学,2015,21-23.
[13]张志强,戈宝军,吕艳玲.双馈异步发电机通风冷却综合计算[J].电机与控制学报,2012,16(4):36-42.ZHANG Zhiqiang,GE Baojun,LV Yanling.Comprehensive calculation on ventilation and cooling of doubly-fed induction generator[J].Electric Machines and Control,2012,16(4):36-42.
[14]路义萍,阴文豪,李俊亭,等.汽轮发电机转子端部及槽内供风量分布特性[J].电工技术学报,2010,25(4):38-43.LU Yiping,YIN Wenhao,LI Junting,et al.Distribution characteristic of air flow rate in rotor end and inner slot of turbo generator[J].Transactions of China Electrotechnical Society,2010,25(4):38-43.
[15]LU Yiping,LIU Li,ZHANG Dongxue.Simulation and analysis of thermal fields of rotor multislots for nonsalient-pole motor[J].IEEE Transactions on Industry Electronics,2015,62(12):7678-7686.
[16]丁树业,关天宇,崔广慧.船舶驱动用异步电机三维温度场研究[J].哈尔滨理工大学学报,2015,20(5):1-7.DING Shuye,GUAN Tianyu,CUI Guanghui.The research on 3Dtemperature field of asynchronous motor for ship drive[J].Journal of Harbin University of Science and Technology,2015,20(5):1-7.
[17]路义萍,李会兰,韩家德,等.某轴向通风无刷励磁机三维流场数值模拟[J].哈尔滨理工大学学报,2016,21(4):1-5.LU Yiping,LI Huilan,HAN Jiade,et al.Three dimensional flow field numerical simulation for some axial ventilation brushless exciter[J].Journal of Harbin University of Science and Technology,2016,21(4):1-5.
[18]路义萍,洪光宇,汤璐,等.多风路大型空冷汽轮发电机三维流场计算[J].中国电机工程学报,2013,33(3):132-139.
[19]陶文铨.数值传热学[M].西安:西安交通大学出版社,2001:1-9,347-375.
[20]路义萍,潘庆辉,孙雪梅,等.湍流模型变化对汽轮发电机转子热流场影响[J].电机与控制学报,2014,18(11):72-76.LU Yiping,PAN Qinghui,SUN Xuemei,et al.Effect of turbulence models on temperature and flow field for turbo-generator rotor[J].Electric Machines and Control,2014,18(11):72-76.
[21]SHANEL M,PICKERING S J,LAMPARD D,et al.Application of computational fluid dynamics to the cooling of salient pole electrical machines[C]//International Conference on Electrical Machines,Espoo,Finland,2000:338-342.
[2]王艳武,杨立,陈翾,等.异步电机转子三维温度场及热应力场研究[J].电机与控制学报,2010,14(6):27-32.WANG Yanwu,YANG Li,CHEN Xuan,et al.Study on 3D thermal field and thermal stress field of the induction motor rotor[J].Electric Machines and Control,2010,14(6):27-32.
[3]张凤阁,杜光辉,王天煜,等.1.12MW高速永磁电机不同冷却方案的温度场分析[J].电工技术学报,2014,29(Z):66-72.ZHANG Fengge,DU Guanghui,WANG Tianyu,et al.Temperature field analysis of 1.12MW high speed permanent magnet machine with different cooling schemes[J].Transactions of China Electrotechnical Society,2014,29(Z):66-72.
[4]M G Mc Ardle,D J Morrow.Noninvasive detection of brushless exciter rotating diode failure[J].IEEE Institute of Electrical and E-lectronic Engineers,2004,19(2):378-382.
[5]郝亮亮,王善铭,邱阿瑞,等.多相无刷励磁系统旋转整流器故障的仿真与识别[J].电工技术学报,2012,27(4):138-144.HAO Liangliang,WANG Shanming,QIU Arui,et al.Simulation and recognition for rotary rectifier fault of multi-phase brushless excitation system[J].Transactions of China Electrotechnical Society,2012,27(4):138-144.
[6]Richard C Schaefer.Brushless rotating exciter conversion to main field static exciter system[J].IEEE Institute of Electrical and E-lectronic Engineers,2013,172:1-5.
[7]孙富.西门子同步电机无刷励磁系统改造[J].电工技术,2011(10):57-58.SUN Fu.Modification of brushless excitation system for SIEMENSsynchronous motor[J].Electric Engineering,2011(10):57-58.
[8]孙维炎,黄浩.空冷系列汽轮发电机上的无刷励磁机研制[J].上海大中型电机,2009(2):14-16.SUN Weiyan,HUANG Hao.Development of brushless exciter on air cooled turbo generator[J].Shanghai Medium and Large Electrical Machines,2009(2):14-16.
[9]路义萍,付余,张万全,等.一种新型无刷励磁机的三维热流场分析[J].中国电机工程学报,2014,34(27):4699-4705.LU Yiping,FU Yu,ZHANG Wanquan,et al.Analysis of three dimensional thermal and flow fields for a new brushless exciter[J].Proceedings of the CSEE,2014,34(27):4699-4705.
[10]路义萍,张东学,孙博,等.无刷励磁机通风冷却数值模拟研究[J].电机与控制学报,2016,20(6):26-31.LU Yiping,ZHANG Dongxue,SUN Bo,et al.Numerical simulation of ventilation cooling system for brushless exciter[J].Electric Machines and Control,2016,20(6):26-31.
[11]Chhavi Nagpal,Prateek K.Jain,Vikram Kumar Reddy V.Rotor vent Hole shape studies on totally enclosed fan cooled motor[C]//2012 IEEE International Conference on power Electronics,Drives and Energy Systems,2012,Bengaluru,4673-4508.
[12]张秀凤.永磁同步牵引电动机温度场研究[D].哈尔滨理工大学,2015,21-23.
[13]张志强,戈宝军,吕艳玲.双馈异步发电机通风冷却综合计算[J].电机与控制学报,2012,16(4):36-42.ZHANG Zhiqiang,GE Baojun,LV Yanling.Comprehensive calculation on ventilation and cooling of doubly-fed induction generator[J].Electric Machines and Control,2012,16(4):36-42.
[14]路义萍,阴文豪,李俊亭,等.汽轮发电机转子端部及槽内供风量分布特性[J].电工技术学报,2010,25(4):38-43.LU Yiping,YIN Wenhao,LI Junting,et al.Distribution characteristic of air flow rate in rotor end and inner slot of turbo generator[J].Transactions of China Electrotechnical Society,2010,25(4):38-43.
[15]LU Yiping,LIU Li,ZHANG Dongxue.Simulation and analysis of thermal fields of rotor multislots for nonsalient-pole motor[J].IEEE Transactions on Industry Electronics,2015,62(12):7678-7686.
[16]丁树业,关天宇,崔广慧.船舶驱动用异步电机三维温度场研究[J].哈尔滨理工大学学报,2015,20(5):1-7.DING Shuye,GUAN Tianyu,CUI Guanghui.The research on 3Dtemperature field of asynchronous motor for ship drive[J].Journal of Harbin University of Science and Technology,2015,20(5):1-7.
[17]路义萍,李会兰,韩家德,等.某轴向通风无刷励磁机三维流场数值模拟[J].哈尔滨理工大学学报,2016,21(4):1-5.LU Yiping,LI Huilan,HAN Jiade,et al.Three dimensional flow field numerical simulation for some axial ventilation brushless exciter[J].Journal of Harbin University of Science and Technology,2016,21(4):1-5.
[18]路义萍,洪光宇,汤璐,等.多风路大型空冷汽轮发电机三维流场计算[J].中国电机工程学报,2013,33(3):132-139.
[19]陶文铨.数值传热学[M].西安:西安交通大学出版社,2001:1-9,347-375.
[20]路义萍,潘庆辉,孙雪梅,等.湍流模型变化对汽轮发电机转子热流场影响[J].电机与控制学报,2014,18(11):72-76.LU Yiping,PAN Qinghui,SUN Xuemei,et al.Effect of turbulence models on temperature and flow field for turbo-generator rotor[J].Electric Machines and Control,2014,18(11):72-76.
[21]SHANEL M,PICKERING S J,LAMPARD D,et al.Application of computational fluid dynamics to the cooling of salient pole electrical machines[C]//International Conference on Electrical Machines,Espoo,Finland,2000:338-342.