The Generalized Geometric Approach to Comparative Study of Permanent Magnet Synchronous Machines and Mechatronic Modules

In the paper the radial and axial permanent magnet synchronous machines (RPMSM, APMSM) are classified in accordance with the types of design topologies and degree of active electromagnetic materials utilization. To realize an express comparison analysis of these machines the generalized geometric method is presented. Unlike the other methods this approach is distinguished by very small time for calculation of the ratio of radial and axial machines volumes as well as the similar ratio of mechatronic modules based on these machines. Derived a simple analytical expression enables to draw 3D plot of the volume ratio of compared machines at different number of poles and various geometrical sizes. The comparative study shows, that at the increased number of poles and at certain stator and rotor configuration the APMSM confidently exceed the RPMSM in term of torque/power density.

[1]  I. Takahashi,et al.  A super high speed PM motor drive system by a quasi-current source inverter , 1993, Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting.

[2]  Thomas A. Lipo,et al.  A comparison of power density for axial flux machines based on general purpose sizing equations , 1999 .

[3]  E. Spooner,et al.  Direct coupled, permanent magnet generators for wind turbine applications , 1996 .

[4]  T. Lipo,et al.  Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machines , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[5]  L. Soderlund,et al.  Design of an axial flux permanent magnet wind power generator , 1997 .

[6]  K. Sitapati,et al.  Performance comparisons of radial and axial field, permanent magnet, brushless machines , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[7]  Thomas A. Lipo,et al.  A general approach to sizing and power density equations for comparison of electrical machines , 1996 .

[8]  T.A. Lipo,et al.  Design and construction of a permanent magnet axial flux synchronous generator , 1997, 1997 IEEE International Electric Machines and Drives Conference Record.

[9]  B. J. Chalmers,et al.  An axial-flux permanent-magnet generator for a gearless wind energy system , 1999 .

[10]  Alberto Tenconi,et al.  Axial Flux versus Radial Flux PM Motors , 1996 .

[11]  Jacek F. Gieras,et al.  Axial Flux Permanent Magnet Brushless Machines , 2005 .