表贴式与内置式无轴承永磁同步电动机电磁特性对比
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摘要
为探究不同转子结构对无轴承永磁同步电动机电磁特性的影响,对2台表贴式与内置式无轴承永磁同步电动机进行对比分析。2台无轴承永磁同步电动机的定子结构、绕组通入的电流、相位、永磁体产生的气隙磁密完全相同。建立了2台电动机的有限元模型,对比分析了永磁磁链、反电动势、电感、转矩以及悬浮力等静态电磁特性。有限元仿真结果表明:表贴式永磁同步电动机永磁体的用量较小,磁链谐波分量较少;内置式无轴承永磁电动机能够产生较大的电感、转矩与悬浮力。
In order to explore the influence of different rotor structure on the electromagnetic characteristics of the bearingless permanent magnet synchronous motors( BPMSMs),a surface- mounted BPMSM and an interior BPMSM are compared. The surface- mounted and interior BPMSMs have the same stators,winding currents and permanent magnet air gap flux densities. The finite element models of the two BPMSMs are built. The static electromagnetic characteristics are deduced,including permanent magnet flux linkage,back- EMF,winding inductances,static torque,and radial suspension force. Finite element simulation results show that the amount of the permanent magnet in surface BPMSMs is much smaller and it has less harmonic of permanent magnet flux linkage. The interior BPMSM generates greater inductance,torque and suspension force.
In order to explore the influence of different rotor structure on the electromagnetic characteristics of the bearingless permanent magnet synchronous motors( BPMSMs),a surface- mounted BPMSM and an interior BPMSM are compared. The surface- mounted and interior BPMSMs have the same stators,winding currents and permanent magnet air gap flux densities. The finite element models of the two BPMSMs are built. The static electromagnetic characteristics are deduced,including permanent magnet flux linkage,back- EMF,winding inductances,static torque,and radial suspension force. Finite element simulation results show that the amount of the permanent magnet in surface BPMSMs is much smaller and it has less harmonic of permanent magnet flux linkage. The interior BPMSM generates greater inductance,torque and suspension force.
引文
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[6]Li C,Wu L.Sliding Mode Control for Synchronization of Fractional Permanent Magnet Synchronous Motors with Finite Time[J].International Journal for Light and Electron Optics,2016,127(6):3 329-3 332.
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[8]曹鑫,邓智泉,杨钢,等.无轴承开关磁阻电机麦克斯韦应力法数学模型[J].中国电机工程学报,2009,29(3):78-83.
[9]Sun X D,Zhu H Q.Study on Static Electromagnetic Characteristics of a Bearingless Permanent Magnet Synchronous Motor[J].Advanced Science Letters,2011,5(1):40-48.
[10]贾红云,程明,花为,等.基于电流谐波注入的磁通切换永磁电机定位力矩补偿方法[J].中国电机工程学报,2009,29(27):83-89.
[11]Zhu H Q,Li H.Magnetic Field Equivalent Current Analysis-Based Radial Force Control for Bearingless Permanent Magnet Synchronous Motors[J].Energies,2015,8(6):4 920-4 942.
[2]赵旭升,邓智泉,王晓琳,等.永磁偏置磁轴承的研究现状及其发展[J].电工技术学报,2009,24(9):9-20.
[3]Jia H,Wang J,Cheng M.Mathematical Model of Radial Suspending Force for a New Stator-Permanent Magnet Bearingless Machine[J].IEEE Transactions on Magnetics,2015,51(11):1-4.
[4]孙晓东,朱熀秋,杨泽斌.无轴承永磁同步电机技术综述及其发展趋势探讨[J].中国机械工程,2012,23(17):2 128-2 135.
[5]孙晓东,朱熀秋,张涛,等.无轴承永磁同步电机径向悬浮力动态解耦控制[J].电机与控制学报,2011,15(11):21-26.
[6]Li C,Wu L.Sliding Mode Control for Synchronization of Fractional Permanent Magnet Synchronous Motors with Finite Time[J].International Journal for Light and Electron Optics,2016,127(6):3 329-3 332.
[7]贺益康,年珩,阮秉涛.感应型无轴承电机的优化气隙磁场定向控制[J].中国电机工程学报,2004,24(6):116-121.
[8]曹鑫,邓智泉,杨钢,等.无轴承开关磁阻电机麦克斯韦应力法数学模型[J].中国电机工程学报,2009,29(3):78-83.
[9]Sun X D,Zhu H Q.Study on Static Electromagnetic Characteristics of a Bearingless Permanent Magnet Synchronous Motor[J].Advanced Science Letters,2011,5(1):40-48.
[10]贾红云,程明,花为,等.基于电流谐波注入的磁通切换永磁电机定位力矩补偿方法[J].中国电机工程学报,2009,29(27):83-89.
[11]Zhu H Q,Li H.Magnetic Field Equivalent Current Analysis-Based Radial Force Control for Bearingless Permanent Magnet Synchronous Motors[J].Energies,2015,8(6):4 920-4 942.