Optimized Structure of Axial Flux Permanent Magnet Motors used as Submarines' Propulsion in Order to Reduce Torque Ripple

Document Type : Original Article

Abstract

Today, the permanent magnet motors are widely used in various industries especially military applications due
to such characteristics as high efficiency, low weight and high energy dens ity. Torque ripple is an inherent
characteristic of this type  of motors. Time and space harmonics produced by the motor drive and the motor
structure itself give rise to torque ri pples in these motors. Geometric structure of the magnets and stator slots
lead to cogging torque (one of the ca uses of torque ripple) in these motors. This unwanted torque component
causes noise, vibration and motor starting issues. It also creates bubbles in the application of these motors as
the submarines' propulsion. It shoul d be noted that bubbles could lead  to submarine detection which is
undesirable in military application. This paper provides analytical formulations  and validation by three-
dimensional finite element analysis to redu ce this unwanted torque. This is  an important step in achieving the
goals of the country's marine industries organization. 

Keywords

References

[1]  T. J. Woolmer, M. D. McCulloch, “Axial Flux Permanent
Magnet Machines: A New Topology For High Performance
Applications,” in Hybrid Vehicle Conference: IET The
Institution of Engineering and Technology, Coventry, pp.
27-42, 2006. ##
[2]  F. Sahin, “Design and development of a high-speed axial-flux permanent Machine,” in Technische Universities
Eindhoven, 2001. ##
[3]  J. F. Gieras, “Axial Flux Permanent Magnet Brushless
Machines,” in Springer Science, Kluwer Academic
Publishers, 2005. ##
[4]  J. F. Gieras and M. Wing, “Permanent Magnet Motor
Technology: Design and Applications,” Boca Raton: CRC
Press, 3rd ed, 2010. ##
[5]  M .  Gulec and M .   Aydin, “Influence of Magnet Grouping
in Reduction of Cogging Torque for A Slotted Double-Rotor
Axial-Flux PM Motor,” International Symposium on Power
Electronics, Electrical Drives, Automation and Motion,
Sorrento, pp. 812-817, 2012. ##
[6]  M. Aydin, “Magnet Skew in Cogging Torque Minimization
of Axial Gap Permanent Magnet Motors,” International
Conference on Electrical Machines, Vilamoura, pp. 1-6,
2008. ##
[7]  J. H. Choi, J. H. Kim, D. H. Kim, and Y. S. Baek, “Design
and Parametric Analysis of Axial Flux PM Motors With
Minimized Cogging Torque,” IEEE Trans. vol. 45, pp. 2855
- 2858, June 2009. ##
[8]  M. Hsieh, D. G. Dorrell, Y. Yeh, and S. Ekram, “Cogging
Torque Reduction in Axial Flux Machines for Small Wind
Turbines,” 35th Annual Conference of IEEE Industrial
Electronics, pp. 4435  –  4439, 2009. ##
[9]  W.  Fei and P. C. K.  Luk, “Cogging Torque Reduction
Techniques for Axial-Flux Surface-Mounted Permanent-Magnet Segmented-Armature-Torus Machines,” IEEE
International Symposium on Industrial Electronics,
Cambridge, pp. 485-490, 2008. ##
[10]   M. Aydin, Z. Q. Zhu, T. A. Lipo, and D. Howe,
“Minimization of Cogging Torque in Axial -Flux Permanent-Magnet Machines: Design Concepts,” IEEE Transactions On
Magnetics, vol. 43, pp. 3614-3622, September 2007. ##
[11]   A. Parviainen, “Design of axial-flux  permanent-magnet     
low-speed machines and performance comparison between
radial-flux and axial- flux machines,” Phd. thesis,
Lappeenranta University of Technology, Lappeenranta,
Finland, 2005##

Files

History

  • Receive Date: 02 May 2016
  • Revise Date: 06 March 2019
  • Accept Date: 19 September 2018
  • Publish Date: 22 December 2014

Share

How to cite

Statistics