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poster
Fault Operation Analysis Of A Novel Dual Three
I. Introduction
Double mechanical port permanent-magnet (DMP-PM) motor is one of the research highlights in motor field in recent years1,2.As shown in Fig. 1, this motor called NS-DRFSPM
machine.In this paper,the performances of NS-DRFSPM machine under several fault operation conditions are compared and analyzed.The simultaneous operation of two groups of
armature windings and the first group of permanent magnets is called state I,namely S1;The simultaneous operation of two groups of armature windings and the second group of permanent
magnets is called state II,namely S2;The first group of armature windings and two groups of permanent magnets operate at the same time,which is called state III,namely S3;The second
group of armature windings and two groups of permanent magnets operate at the same time,which is called state IV,namely S4.
II.Performance comparisons
A series of comparisons of electromagnetic performance of several fault operation states are conducted by finite element analysis (FEA).Fig.2(a) compares the no-load phase back-EMF per
turn waveforms of four fault operation states of the NS-DRFSPM machine at 1500r/min based on FEA.It can be seen that the back-EMF amplitude of the third operating state of the motor
is the smallest,and the second is the largest.Fig.2(b) shows the flux linkage waveforms of four fault operation states of the NS-DRFSPM machine.The cogging torque waveforms of four
fault operation states of NS-DRFSPM machine shown in Fig.2(c).The cogging torque waveforms of state III and state IV are almost the same,and the torque ripple is the smallest.Fig.2(d)
present the electromagnetic torque of the NS-DRFSPM machine under id=0 control with current densities Jsa=5A/mm2.The best performance of average torque and torque ripple of the NSDRFSPM
machine is state II(6.9Nm,42.1%).
III.Conclusion
The other performance,such as the FFT results analysis and simultaneous fault operation of single armature winding and magnet,will be shown in the full paper.
References:
1J. Bai,P. Zheng,C. Tong,Z. Song,and Q. Zhao,“Characteristic Analysis and Verification of the Magnetic-Field-Modulated Brushless Double-Rotor Machine,” IEEE Trans.
Ind. Electron.,vol. 62,no. 7,pp. 4023–4033,Jul. 2015.
2X. Zhu,L. Chen,L. Quan,Y. Sun,W. Hua,and Z. Wang,“A new magnetic-planetary-geared permanent-magnet brushless machine for hybrid electric vehicle,”IEEE Trans. Magn.,vol.
48,no. 11,pp. 4642–4645,Nov. 2012.