Comparison of Low-Cost Single-Phase Wound-Field Switched-Flux Machines

This paper presents a comparative study of two types of low-cost single-phase wound-field switched-flux machines with dc field and ac armature windings having the same coil-pitch of 2 slot-pitches and having different coil-pitches of 1 and 3 slot-pitches, respectively. Both can share the same stator lamination, but the latter can have shorter end windings and lower iron loss for the 12-slot/6-pole configuration. The performance, including back electromotive force, cogging torque, and static torque, of both machines are analyzed and compared by 2-D finite-element analysis and validated by experiments on the prototype machines.

[1]  C. Pollock,et al.  The flux switching motor, a DC motor without magnets or brushes , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[2]  D. Howe,et al.  Investigation of iron loss in flux-switching PM machines , 2008 .

[3]  C. Pollock,et al.  Low cost, high power density, flux switching machines and drives for power tools , 2003, 38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003..

[4]  C. Pollock,et al.  Flux-Switching Motors for Automotive Applications , 2003, IEEE Transactions on Industry Applications.

[5]  M. Gabsi,et al.  Analytical Approach for Air-Gap Modeling of Field-Excited Flux-Switching Machine: No-Load Operation , 2012, IEEE Transactions on Magnetics.

[6]  Z. Q. Zhu,et al.  Switched flux permanent magnet machines — Innovation continues , 2011, 2011 International Conference on Electrical Machines and Systems.

[7]  B. Mecrow,et al.  A Wound-Field Three-Phase Flux-Switching Synchronous Motor With All Excitation Sources on the Stator , 2010, IEEE Transactions on Industry Applications.

[8]  D. Howe,et al.  Analysis of electromagnetic performance of flux-switching permanent-magnet Machines by nonlinear adaptive lumped parameter magnetic circuit model , 2005, IEEE Transactions on Magnetics.

[9]  C. Pollock,et al.  Electronically controlled flux switching motors : a comparison with an induction motor driving an axial fan , 2003, IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468).

[10]  Z. Zhu,et al.  Low cost flux-switching brushless AC machines , 2010, 2010 IEEE Vehicle Power and Propulsion Conference.

[11]  Zhiquan Deng,et al.  Comparison of Hybrid Excitation Topologies for Flux-Switching Machines , 2012, IEEE Transactions on Magnetics.

[12]  N. S. Hoang,et al.  A Low-Cost , 1997 .

[13]  N. Matsui,et al.  Design study and experimental analysis of wound field flux switching motor for HEV applications , 2012, 2012 XXth International Conference on Electrical Machines.

[14]  Nobuyuki Matsui,et al.  A new structure of 12Slot-10Pole field-excitation flux switching synchronous machine for hybrid electric vehicles , 2011, Proceedings of the 2011 14th European Conference on Power Electronics and Applications.

[15]  S. E. Rauch,et al.  Design Principles of Flux-Switch Alternators [includes discussion] , 1955, Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems.

[16]  Z. Zhu,et al.  Advanced Flux-Switching Permanent Magnet Brushless Machines , 2010, IEEE Transactions on Magnetics.

[17]  W. Marsden.  I and J , 2012 .

[18]  Z.Q. Zhu,et al.  A simple method for measuring cogging torque in permanent magnet machines , 2009, 2009 IEEE Power & Energy Society General Meeting.

[19]  Hamid Ben Ahmed,et al.  Switching flux permanent magnet polyphased synchronous machines , 1997 .

[20]  D. Howe,et al.  Starting Torque of Single-Phase Flux-Switching Permanent Magnet Motors , 2006, INTERMAG 2006 - IEEE International Magnetics Conference.