计及高次谐波影响的高密度永磁同步电机铁耗计算
|
摘要
在经典Bertotti三项式常系数铁耗计算模型的基础上,基于谐波分析原理,引入涡流损耗、磁滞损耗和附加损耗补偿系数,提出了一种计及高次谐波影响的高密度永磁同步电机(PMSM)铁耗计算模型。该模型中的补偿系数均随磁密幅值、频率和畸变率变化,能较好地反映基波及谐波磁场对铁耗的影响。为了验证该模型的有效性及准确性,以48槽/8极内转子和36槽/48极外转子两台PMSM为研究对象,将模型的计算值、有限元仿真结果和试验数据进行对比分析。结果表明,铁耗计算模型有较高的精度,特别适用于磁密幅值与频率变化范围大的场合。
Based on the classical Bertotti trinomial constant coefficient iron loss calculation model and the harmonic analysis principle, a high density permanent magnet synchronous motor(PMSM) iron loss calculation model considering eddy current loss, hysteresis loss and additional loss compensation coefficient was proposed. The compensation coefficients in the model varied with the amplitude, frequency and distortion rate of magnetic density, which could better reflect the effect of fundamental wave and harmonic magnetic field on iron loss. In order to verify the validity and accuracy of this model, two PMSMs with respectively 48 slots/8 poles inner rotor and 36 slots/48 poles outer rotor were taken as examples to compare the calculated value of the model with the finite element simulation results and experimental data. The results showed that the iron loss calculation model proposed had higher accuracy, and was suitable for applications in a wide range of magnetic density amplitude and frequency especially.
Based on the classical Bertotti trinomial constant coefficient iron loss calculation model and the harmonic analysis principle, a high density permanent magnet synchronous motor(PMSM) iron loss calculation model considering eddy current loss, hysteresis loss and additional loss compensation coefficient was proposed. The compensation coefficients in the model varied with the amplitude, frequency and distortion rate of magnetic density, which could better reflect the effect of fundamental wave and harmonic magnetic field on iron loss. In order to verify the validity and accuracy of this model, two PMSMs with respectively 48 slots/8 poles inner rotor and 36 slots/48 poles outer rotor were taken as examples to compare the calculated value of the model with the finite element simulation results and experimental data. The results showed that the iron loss calculation model proposed had higher accuracy, and was suitable for applications in a wide range of magnetic density amplitude and frequency especially.
引文
[1] 黄苏融,张琪,谢国栋,等.燃料电池轿车用高密度无刷永磁牵引电动机[J].机械工程学报,2005,41(12):69.
[2] 张琪,鲁茜睿,黄苏融,等.多领域协同仿真的高密度永磁电机温升计算[J].中国电机工程学报,2014,34(12):1874.
[3] BERTOTTI G.General properties of power losses in soft ferromagnetic materials[J].IEEE Transactions on Magnetics,1988,24(1):621.
[4] 刘晓芳,赵海森,陈伟华,等.电机铁耗的有限元计算方法研究进展及有待解决的问题[J].电机与控制应用,2010,37(12):1.
[5] 黄允凯,胡虔生,朱建国.顾及旋转铁耗的高速爪极电机三维磁热耦合分析[J].电工技术学报,2010,25(5):54.
[6] 朱洒,程明,李祥林,等.新型外转子低速直驱永磁游标电机的损耗[J].电工技术学报,2015,30(2):14.
[7] 佟文明,朱晓锋,贾建国,等.时间谐波对永磁同步电机损耗的影响规律[J].电工技术学报,2015,30(6):60.
[8] DAN M I,POPESCU M,MCGILP M I,et al.Computation of core losses in electrical machines using improved models for laminated steel[J].IEEE Transactions on Industry Applications,2007,43(6):1554.
[9] 刘光伟,赵新刚,张凤阁,等.高速永磁爪极电机铁耗与空气摩擦损耗计算[J].电工技术学报,2015,30(2):148.
[10] POPESCU M,IONEL D M.A best-fit model of power losses in cold rolled-motor lamination steel operating in a wide range of frequency and magnetization[J].IEEE Transactions on Magnetics,2007,43(4):1753.
[11] IONEL D M,POPESCU M,DELLINGER S J,et al.On the variation with flux and frequency of the core loss coefficients in electrical machines[J].IEEE Transactions on Industry Applications,2006,42(3):658.
[12] 孔晓光,王凤翔,徐云龙,等.高速永磁电机铁耗的分析和计算[J].电机与控制学报,2010,14(9):26.
[13] 周娟,任国影,魏琛,等.电动汽车交流充电桩谐波分析及谐波抑制研究[J].电力系统保护与控制,2017,45(5):18.
[14] 陈世坤.电机设计[M].2版.北京:机械工业出版社,2004.
[2] 张琪,鲁茜睿,黄苏融,等.多领域协同仿真的高密度永磁电机温升计算[J].中国电机工程学报,2014,34(12):1874.
[3] BERTOTTI G.General properties of power losses in soft ferromagnetic materials[J].IEEE Transactions on Magnetics,1988,24(1):621.
[4] 刘晓芳,赵海森,陈伟华,等.电机铁耗的有限元计算方法研究进展及有待解决的问题[J].电机与控制应用,2010,37(12):1.
[5] 黄允凯,胡虔生,朱建国.顾及旋转铁耗的高速爪极电机三维磁热耦合分析[J].电工技术学报,2010,25(5):54.
[6] 朱洒,程明,李祥林,等.新型外转子低速直驱永磁游标电机的损耗[J].电工技术学报,2015,30(2):14.
[7] 佟文明,朱晓锋,贾建国,等.时间谐波对永磁同步电机损耗的影响规律[J].电工技术学报,2015,30(6):60.
[8] DAN M I,POPESCU M,MCGILP M I,et al.Computation of core losses in electrical machines using improved models for laminated steel[J].IEEE Transactions on Industry Applications,2007,43(6):1554.
[9] 刘光伟,赵新刚,张凤阁,等.高速永磁爪极电机铁耗与空气摩擦损耗计算[J].电工技术学报,2015,30(2):148.
[10] POPESCU M,IONEL D M.A best-fit model of power losses in cold rolled-motor lamination steel operating in a wide range of frequency and magnetization[J].IEEE Transactions on Magnetics,2007,43(4):1753.
[11] IONEL D M,POPESCU M,DELLINGER S J,et al.On the variation with flux and frequency of the core loss coefficients in electrical machines[J].IEEE Transactions on Industry Applications,2006,42(3):658.
[12] 孔晓光,王凤翔,徐云龙,等.高速永磁电机铁耗的分析和计算[J].电机与控制学报,2010,14(9):26.
[13] 周娟,任国影,魏琛,等.电动汽车交流充电桩谐波分析及谐波抑制研究[J].电力系统保护与控制,2017,45(5):18.
[14] 陈世坤.电机设计[M].2版.北京:机械工业出版社,2004.