永磁同步电机永磁体分块对涡流损耗的影响分析
|
摘要
逆变器供电的永磁同步电机(PMSM)中电子器件的高频开关会产生高频的电流时间谐波,进而引起永磁体涡流损耗的显著增加。给出了一种考虑电流时间谐波的永磁体涡流损耗计算的解析式,详细分析了永磁体尺寸和透入深度与涡流损耗之间的关系,并通过一个理想的3D模型进行验证。以1台逆变器供电的48槽8极PMSM为例进行涡流损耗仿真计算,结果表明:永磁体合理的分块数可以有效减少涡流损耗。
In the inverter-powered permanent magnet synchronous motor( PMSM),high frequency current time harmonics was produced by the high frequency switch tube,and the eddy current loss of permanent magnet( PM) was increased. Considering the current time harmonics in PM,an analytic equation about the eddy current loss was proposed. The relationship between the dimension of PM,penetration depth and eddy current loss was deduced in details. Then the conclusion was drawn. The eddy current loss of PM was greatest when the axial or circumferential dimension of PM was twice the penetration depth,and the accuracy of the conclusion was verified by an ideal 3 D model. In addition,the eddy current loss simulation of a 48-slot 8-pole water-cooled PMSM powered by an inverter was taken as an example. The results showed that a reasonable number of segments in PM could effectively reduce the eddy current loss.
In the inverter-powered permanent magnet synchronous motor( PMSM),high frequency current time harmonics was produced by the high frequency switch tube,and the eddy current loss of permanent magnet( PM) was increased. Considering the current time harmonics in PM,an analytic equation about the eddy current loss was proposed. The relationship between the dimension of PM,penetration depth and eddy current loss was deduced in details. Then the conclusion was drawn. The eddy current loss of PM was greatest when the axial or circumferential dimension of PM was twice the penetration depth,and the accuracy of the conclusion was verified by an ideal 3 D model. In addition,the eddy current loss simulation of a 48-slot 8-pole water-cooled PMSM powered by an inverter was taken as an example. The results showed that a reasonable number of segments in PM could effectively reduce the eddy current loss.
引文
[1]朱卫光,张承宁,董玉刚.大功率永磁同步电机转子永磁体损耗研究[J].电机与控制学报,2014,18(1):33-37.
[2]宋进金,赵静,李晓贝.高速永磁电机的永磁体和护套涡流损耗分析[J].智能电网,2015(4):313-317.
[3]YAMAZAKI K,ABE A.Loss investigation of interior permanent-magnet motors considering carrier harmonics and magnet eddy currents[J].IEEE Transactions on Industry Applications,2009,45(2):659-665.
[4]陈丽香,王雪斌,李敏.永磁体涡流损耗的分析[J].微电机,2015,48(6):13-16.
[5]李洪凤,韩冰,崔忠宝.永磁电机永磁体涡流损耗的研究进展[J].微特电机,2017,45(4):87-92.
[6]BETTAYEB A,JANNOT X,VANNIER J C.Analytical calculation of rotor magnet eddy-current losses for high speed IPMSM[C]∥XIX International Conference on Electrical Machines IEEE,2010:1-6.
[7]BALAMURALI A,LAI C,MOLLAEIAN A,et al.Analytical investigation into magnet eddy current losses in interior permanent magnet motor using modified winding function theory accounting for pulsewidth modulation harmonics[J].IEEE Transactions on Magnetics,2009,27(3):39-41.
[8]李洪凤,沈彦波.永磁球形电动机永磁体涡流损耗分析[J].电工技术学报,2015,30(12):267-275.
[9]陈萍,唐任远,佟文明,等.高功率密度永磁同步电机永磁体涡流损耗分布规律及其影响[J].电工技术学报,2015,30(6):1-9.
[10]WILLS D A,KAMPER M J.Reducing PM eddy current rotor losses by partial magnet and rotor yoke segmentation[C]∥XIX International Conference on Electrical Machines IEEE,2010:1-6.
[11]WANG J,ATALLAH K,CHIN R,et al.Rotor eddycurrent loss in permanent-magnet brushless AC machines[J].IEEE Transactions on Magnetics,2010,46(7):2701-2707.
[12]何彪.逆变器供电变频永磁同步电机损耗和温度场的理论与计算[D].上海:上海大学,2016.
[2]宋进金,赵静,李晓贝.高速永磁电机的永磁体和护套涡流损耗分析[J].智能电网,2015(4):313-317.
[3]YAMAZAKI K,ABE A.Loss investigation of interior permanent-magnet motors considering carrier harmonics and magnet eddy currents[J].IEEE Transactions on Industry Applications,2009,45(2):659-665.
[4]陈丽香,王雪斌,李敏.永磁体涡流损耗的分析[J].微电机,2015,48(6):13-16.
[5]李洪凤,韩冰,崔忠宝.永磁电机永磁体涡流损耗的研究进展[J].微特电机,2017,45(4):87-92.
[6]BETTAYEB A,JANNOT X,VANNIER J C.Analytical calculation of rotor magnet eddy-current losses for high speed IPMSM[C]∥XIX International Conference on Electrical Machines IEEE,2010:1-6.
[7]BALAMURALI A,LAI C,MOLLAEIAN A,et al.Analytical investigation into magnet eddy current losses in interior permanent magnet motor using modified winding function theory accounting for pulsewidth modulation harmonics[J].IEEE Transactions on Magnetics,2009,27(3):39-41.
[8]李洪凤,沈彦波.永磁球形电动机永磁体涡流损耗分析[J].电工技术学报,2015,30(12):267-275.
[9]陈萍,唐任远,佟文明,等.高功率密度永磁同步电机永磁体涡流损耗分布规律及其影响[J].电工技术学报,2015,30(6):1-9.
[10]WILLS D A,KAMPER M J.Reducing PM eddy current rotor losses by partial magnet and rotor yoke segmentation[C]∥XIX International Conference on Electrical Machines IEEE,2010:1-6.
[11]WANG J,ATALLAH K,CHIN R,et al.Rotor eddycurrent loss in permanent-magnet brushless AC machines[J].IEEE Transactions on Magnetics,2010,46(7):2701-2707.
[12]何彪.逆变器供电变频永磁同步电机损耗和温度场的理论与计算[D].上海:上海大学,2016.