楔形气隙结构对永磁同步电主轴转矩和径向力影响的分析
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摘要
为了提高永磁同步电主轴电磁转矩,减小振动噪声,提出了一种楔形气隙结构。文中对楔形气隙永磁同步电主轴的电磁转矩进行了解析分析。利用有限元软件对均匀气隙和楔形气隙永磁同步电主轴模型进行了仿真分析,将以上两种气隙结构模型的电主轴转矩和径向力进行了对比,发现楔形气隙结构和均匀气隙结构的永磁同步电主轴相比电磁转矩幅值增加较大,径向力幅值显著减小。并得出楔形气隙结构对提高永磁同步电主轴转矩密度、减小振动噪声有明显的作用。
In order to improve the electromagnetic torque and reduce the vibration and noise of the permanent magnet synchronous electric spindle,a novel wedgy air-gap structure was introduced. The electromagnetic torque for the wedgy air-gap structure of electric spindle is analytically analysed. By using finite element software,two kinds of permanent magnet synchronous electric spindle models which have the uniform and the wedgy airgap structure are simulated,and the electromagnetic torque and the radial force of the two kinds of models are compared. The research shows that the wedgy air-gap structure permanent magnet synchronous electric spindle can produce higher electromagnetic torque and lower radial force amplitude than that of the uniform air-gap permanent magnet synchronous electric spindle. The conclusion is that the permanent magnet synchronous electric spindle with the wedgy air-gap structure can increase the electromagnetic torque and reduce the vibration and noise.
In order to improve the electromagnetic torque and reduce the vibration and noise of the permanent magnet synchronous electric spindle,a novel wedgy air-gap structure was introduced. The electromagnetic torque for the wedgy air-gap structure of electric spindle is analytically analysed. By using finite element software,two kinds of permanent magnet synchronous electric spindle models which have the uniform and the wedgy airgap structure are simulated,and the electromagnetic torque and the radial force of the two kinds of models are compared. The research shows that the wedgy air-gap structure permanent magnet synchronous electric spindle can produce higher electromagnetic torque and lower radial force amplitude than that of the uniform air-gap permanent magnet synchronous electric spindle. The conclusion is that the permanent magnet synchronous electric spindle with the wedgy air-gap structure can increase the electromagnetic torque and reduce the vibration and noise.
引文
[1]Zhang Xin Yun,Wang Min,Zan Tao,et al.The static anddynamic analysis of high-speed electric spindle based on ANSYS[C].2011 Second International Conference on Digital Manufacturing and Automation(ICDMA),2011.
[2]李景灿,廖勇,姚骏.饱和对埋入式永磁同步电机电感特性的影响[J].重庆大学学报,2009,32(11):1285-1290.
[3]于慎波,姜菲菲,王辉,等.永磁同步电主轴分数槽电机的径向电磁力分析[J].组合机床与自动化加工技术,2014(6):15-16.
[4]刘明基,韩志,裴亚伟,等.基于田口法的永磁发电机气隙磁通密度优化[J].微特电机,2014,42(3):29-35.
[5]J H Lee,D H Kim,I H Park.Minimization of higher backEMF harmonics in permanent magnet motor using shape design sensitivity with B-spline parameterization[J].IEEE Transactions on Magnetics,2003,39(3):1269-1272.
[6]Seong Taek Lee,Leon M Tolbert.Analysis of Slanted Airgap Structure of Interior Permanent Magnet Synchronous Motor with Brushless Field Excitation[C].IEEE Energy Conversion Congress and Exposition,2009.
[7]M A Rahman,P Zhou.Analysis of Brushless Permanent Magnet Synchronous Motors[J].IEEE Transactions on Industrial Electronics,1996,43(2):256-267.
[8]刘长红,姚若萍,刘彤彦.变频调速永磁同步电机电抗参数的研究[J].大电机技术,2003(5):1-5.
[9]陈世元,郭建龙.双凸极永磁电动机磁阻转矩和转矩脉动的关系研究[J].中国电机工程学报,2008,28(9):76-80.
[10]唐任远,宋志环,于慎波,等.变频器供电对永磁电机振动噪声源的影响研究[J].电机与控制学报,2010,14(3):12-16.
[2]李景灿,廖勇,姚骏.饱和对埋入式永磁同步电机电感特性的影响[J].重庆大学学报,2009,32(11):1285-1290.
[3]于慎波,姜菲菲,王辉,等.永磁同步电主轴分数槽电机的径向电磁力分析[J].组合机床与自动化加工技术,2014(6):15-16.
[4]刘明基,韩志,裴亚伟,等.基于田口法的永磁发电机气隙磁通密度优化[J].微特电机,2014,42(3):29-35.
[5]J H Lee,D H Kim,I H Park.Minimization of higher backEMF harmonics in permanent magnet motor using shape design sensitivity with B-spline parameterization[J].IEEE Transactions on Magnetics,2003,39(3):1269-1272.
[6]Seong Taek Lee,Leon M Tolbert.Analysis of Slanted Airgap Structure of Interior Permanent Magnet Synchronous Motor with Brushless Field Excitation[C].IEEE Energy Conversion Congress and Exposition,2009.
[7]M A Rahman,P Zhou.Analysis of Brushless Permanent Magnet Synchronous Motors[J].IEEE Transactions on Industrial Electronics,1996,43(2):256-267.
[8]刘长红,姚若萍,刘彤彦.变频调速永磁同步电机电抗参数的研究[J].大电机技术,2003(5):1-5.
[9]陈世元,郭建龙.双凸极永磁电动机磁阻转矩和转矩脉动的关系研究[J].中国电机工程学报,2008,28(9):76-80.
[10]唐任远,宋志环,于慎波,等.变频器供电对永磁电机振动噪声源的影响研究[J].电机与控制学报,2010,14(3):12-16.