Magnet shifting for back EMF improvement and torque ripple reduction of a TORUS-type nonslotted axial flux permanent magnet machine

被引：7
作者：
Mirzahosseini, Reza [1 ]
Darabi, Ahmad [1 ]
Assili, Mohsen [1 ]
机构：
[1] Shahrood Univ Technol, Fac Elect Engn & Robot, Shahrood, Iran
来源：
INTERNATIONAL TRANSACTIONS ON ELECTRICAL ENERGY SYSTEMS | 2020年 / 30卷 / 04期
关键词：
analytical formula; back EMF improvement; PM shifting method; torque ripple reduction; TORUS NS-AFPM machine; SYNCHRONOUS MOTOR; DESIGN; COST;
D O I：
10.1002/2050-7038.12293
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Permanent magnet (PM) shifting method is one of the ways to improve performance characteristics of PM machines. In this paper, PM shifting method is employed to reduce total harmonic distortion (THD) of the back EMF and torque ripple of a TORUS type nonslotted axial flux permanent magnet (TORUS NS-AFPM) machine. To fulfill this goal, a formula for calculating back EMF waveform of the machine with shifted PMs is proposed. A 3.7 kW, 1400 rpm TORUS NS-AFPM machine is selected as case study machine and the accuracy of the proposed formula is confirmed with the help of three-dimensional finite element method (3-D FEM). Then by using proposed formula, the effect of PM shifting angle on the back EMF waveform of the machine is investigated. In addition, the case study machine is fabricated and back EMF waveform of the machine with different value of PM shifting angle is analyzed using experimental results. With the help of proposed formula and 3-D FEM the effect of PM shifting angle on the torque ripple of the machine is studied. In addition, a procedure for calculating optimum value of PM shifting angle is proposed. The obtained results show the effectiveness of the PM shifting method on improving machine back EMF waveform and torque ripple.
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页数：14
相关论文
共 23 条
[1]   An analytical model of harmonic content no-load magnetic fields and Back EMF in axial flux PM machines regarding the iron saturation and winding distribution [J].
Baghayipour, Mohammadreza ;
Darabi, Ahmad ;
Dastfan, Ali .
COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING, 2018, 37 (01) :54-76
[2]   Back EMF improvement and force ripple reduction in PM linear motor drives [J].
Bianchi, N ;
Bolognani, S ;
Cappello, ADF .
PESC 04: 2004 IEEE 35TH ANNUAL POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-6, CONFERENCE PROCEEDINGS, 2004, :3372-3377
[3]   Analytical Model of Slotted Air-Gap Surface Mounted Permanent-Magnet Synchronous Motor With Magnet Bars Magnetized in the Shifting Direction [J].
Boughrara, Kamel ;
Chikouche, Brahim Ladghem ;
Ibtiouen, Rachid ;
Zarko, Damir ;
Touhami, Omar .
IEEE TRANSACTIONS ON MAGNETICS, 2009, 45 (02) :747-758
[4]   Analyzing the Profile Effects of the Various Magnet Shapes in Axial Flux PM Motors by Means of 3D-FEA [J].
Cetin, Emrah ;
Daldaban, Ferhat .
ELECTRONICS, 2018, 7 (02)
[5]   An Extended Analytical Algorithm for Optimal Designing of a TORUS-type Non-slotted Axial-Flux Permanent Magnet Motor [J].
Darabi A. ;
Baghayipour M. ;
Mirzahosseini R. .
Journal of Control, Automation and Electrical Systems, 2017, 28 (6) :748-761
[6]   Cogging torque reduction in permanent magnet machines [J].
Dosiek, Luke ;
Pillay, Pragasen .
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 2007, 43 (06) :1565-1571
[7]   Axial-flux permanent-magnet motor for direct-drive elevator systems without machine room [J].
Ficheux, R.L. ;
Caricchi, F. ;
Crescimbini, F. ;
Honorati, O. .
1693, Institute of Electrical and Electronics Engineers Inc. (37)
[8]  
Gieras J., 2008, AXIAL FLUX PERMANENT
[9]  
Gulec M, 2012, INT S POW EL EL DRIV, P20
[10]   Investigation of winding MMF harmonic reduction methods in IPM machines equipped with FSCWs [J].
Gundogdu, Tayfun ;
Komurgoz, Guven .
INTERNATIONAL TRANSACTIONS ON ELECTRICAL ENERGY SYSTEMS, 2019, 29 (01)
123