车用永磁同步电机转子热结构耦合分析
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摘要
为了准确分析永磁同步电机(permanent magnet synchronous motor,PMSM)转子结构强度,文章从热结构耦合方面出发,以额定功率30 kW的车用PMSM为研究对象,基于传热学理论建立了电机三维温度场求解域模型,求解电机全域温度分布,并通过温升实验验证了仿真精度;然后将转子瞬态温度场仿真结果作为载荷施加到结构场中,分析了转子在热结构耦合下的应力分布;最后分别研究了离心力、热应力以及两者耦合对转子应力的影响。该文研究结果为进一步优化PMSM转子结构提供了一定的参考依据。
In order to analyze the rotor structural strength of permanent magnet synchronous motor(PMSM) accurately, and in view of thermal and structural coupling, a rated power of 30 kW PMSM in vehicle was taken as the research object. Firstly, based on the theory of heat transfer, the 3 D thermal field solution domain model of the motor was established, the global temperature distribution of the motor was obtained, and the simulation accuracy was verified by temperature rise experiment. Then the transient temperature field simulation results of the rotor was applied to the structural field as load, and the stress distribution of the rotor under thermal-structural coupling was analyzed. Finally, the effects of centrifugal force, thermal stress and their coupling on rotor stress were studied respectively. This study provides a reference for further optimization of the rotor structure of PMSM.
In order to analyze the rotor structural strength of permanent magnet synchronous motor(PMSM) accurately, and in view of thermal and structural coupling, a rated power of 30 kW PMSM in vehicle was taken as the research object. Firstly, based on the theory of heat transfer, the 3 D thermal field solution domain model of the motor was established, the global temperature distribution of the motor was obtained, and the simulation accuracy was verified by temperature rise experiment. Then the transient temperature field simulation results of the rotor was applied to the structural field as load, and the stress distribution of the rotor under thermal-structural coupling was analyzed. Finally, the effects of centrifugal force, thermal stress and their coupling on rotor stress were studied respectively. This study provides a reference for further optimization of the rotor structure of PMSM.
引文
[1]曲荣海,秦川.电动汽车及其驱动电机发展现状与展望[J].南方电网技术,2016,10(3):82-86.
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[8]董剑宁,黄允凯,金龙,等.高速永磁电机设计与分析技术综述[J].中国电机工程学报,2014,34(27):4640-4653.
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[11]孔晓光,王凤翔,邢军强.高速永磁电机的损耗计算与温度场分析[J].电工技术学报,2012,27(9):166-173.
[12]张琪,土伟旭,黄苏融,等.高密度车用永磁电机流固耦合传热仿真分析[J].电机与控制应用,2012,39(8):1-5.
[13]王淑旺,江曼,朱标龙,等.车用变频调速水冷永磁同步电机三维温度场分析[J].电机与控制应用,2016,43(2):55-59.
[14]刘蕾,刘光复,刘马林,等.车用永磁同步电机三维温度场分析[J].中国机械工程,2015,26(11):1438-1444.
[15]张洪亮.永磁同步电机铁心损耗与暂态温度场研究[D].哈尔滨:哈尔滨工业大学,2010.
[16]COOK R D.Finite element modeling for stress analysis[M].NewYork:John Wiley&Sons,1995.
[2]刘金峰,张学义,扈建龙.电动汽车驱动电机发展展望[J].农业装备与车辆工程,2012,50(10):35-37.
[3]彭海涛,何志伟,余海阔.电动汽车用永磁同步电机的发展分析[J].微电机,2010,43(6):78-81.
[4]佟文明,次元平.高速内置式永磁电机转子机械强度研究[J].电机与控制学报,2015,19(11):45-50.
[5]QIAO L,WANG X J,CHEN X B,et al.3dimensional finite element analysis of vehicle permanent magnet motor's rotor[C]//International Conference on Mechatronic Science,E-lectric Engineering and Computer.[S.l.]:IEEE,2011:1407-1410.
[6]陈远扬,韩则胤,陈阳生.高速内嵌式永磁电动机转子机械强度分析[J].微特电机,2012,40(5):5-9.
[7]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.
[8]董剑宁,黄允凯,金龙,等.高速永磁电机设计与分析技术综述[J].中国电机工程学报,2014,34(27):4640-4653.
[9]HUYNH C,ZHENG L P,ACHARYA D.Losses in high speed permanent magnet machines used in microturbine applications[J].Journal of Engineering for Gas Turbines and Power,2008,131(2):697-703.
[10]LEWIS R W,NITHIARASU P,SEETHARAMU K N.Fundamentals of the finite element method for heat and fluid flow[M].Hoboken:John Wiley&Sons Ltd.,2004.
[11]孔晓光,王凤翔,邢军强.高速永磁电机的损耗计算与温度场分析[J].电工技术学报,2012,27(9):166-173.
[12]张琪,土伟旭,黄苏融,等.高密度车用永磁电机流固耦合传热仿真分析[J].电机与控制应用,2012,39(8):1-5.
[13]王淑旺,江曼,朱标龙,等.车用变频调速水冷永磁同步电机三维温度场分析[J].电机与控制应用,2016,43(2):55-59.
[14]刘蕾,刘光复,刘马林,等.车用永磁同步电机三维温度场分析[J].中国机械工程,2015,26(11):1438-1444.
[15]张洪亮.永磁同步电机铁心损耗与暂态温度场研究[D].哈尔滨:哈尔滨工业大学,2010.
[16]COOK R D.Finite element modeling for stress analysis[M].NewYork:John Wiley&Sons,1995.