"Plastic" electric motors: a viable solution for axial flux machines

After more than 100 years of development, rotating electric machines are a mature industrial product. Nevertheless improvements are still possible for specific applications, and it is likely that the major evolution will be promoted by unconventional structures. Among them, some of the most interesting proposals have a three dimensional flux path. Due to the magnetic circuit geometry, the unconventional "3D motors" suffer the difficulties in adopting the laminated iron technology: the problem can be afforded adopting new materials, such as plastic or powder magnetic composite material. Hence, unconventional motor structures and new materials open a possible evolution in the electric machines and drives scenario. Today, plastic materials are an infrequent choice for the electric machines structural parts, but, pioneering applications, such as aeronautical components, let some technological scouting: a low weight-high efficiency plastic axial flux motor for a solar flying platform is presented as example of a combined new material-new geometry development.

[1]  J. S. Varga,et al.  Magnetic and Dimensional Properties of Axial Induction Motors , 1986, IEEE Transactions on Energy Conversion.

[2]  D. Platt.  Permanent magnet synchronous motor with axial flux geometry , 1989 .

[3]  F. Profumo,et al.  A low loss permanent magnet brushless DC motor utilizing tape wound amorphous iron , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[4]  T. Hirasa,et al.  Optimum values for magnet and armature winding thickness for axial-field permanent magnet brushless DC motors , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[5]  A. E. Corbett.  An axial airgap brushless DC tachogenerator , 1991 .

[6]  J. Y. Hung,et al.  Detent Torque and Axial Force Effects In A Dual Air-gap Axial-field Brushless Pm Motor , 1993 .

[7]  Dean Patterson.  Development of an Axial Flux Permanent Magnet Brushless DC Motor for Wheel Drive in a Solar Powered Vehicle , 1994 .

[8]  R. Spee,et al.  The design and development of an axial flux permanent magnet brushless DC motor for wheel drive in a solar powered vehicle , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[9]  K. R. Shao,et al.  Magnetic field analysis and optimal design of DC permanent magnet coreless disc machine , 1994 .

[10]  Ezio Santini,et al.  Multi-stage axial-flux PM machine for wheel direct drive , 1995 .

[11]  Ezio Santini,et al.  Multi-stage axial-flux PM machine for wheel direct drive , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[12]  Branislav Hredzak,et al.  Elimination of torque pulsations in a direct drive EV wheel motor , 1996 .

[13]  Keith Robert Pullen,et al.  The high speed axial flux disc generator-unlocking the potential of the automotive gas turbine , 1996 .

[14]  F. Crescimbini,et al.  PERFORMANCE OF CORELESS-WINDING AXIAL-FLUX PERMANENT-MAGNET GENERATOR WITH POWER OUTPUT AT 400 Hz - 3000 rev/min , 1997 .

[15]  F. Crescimbini,et al.  Modular, axial-flux, permanent-magnet motor for ship propulsion drives , 1997 .

[16]  E. Spooner,et al.  COMPACT PERMANENT-MAGNET MACHINES , 1997 .

[17]  Zheng Zhang,et al.  Axial flux machines drives: a new viable solution for electric cars , 1997, IEEE Trans. Ind. Electron..

[18]  Edward P. Furlani,et al.  A three-dimensional field solution for permanent-magnet axial-field motors , 1997 .

[19]  F. Profumo,et al.  Analysis and experimental validation of performance for an axial flux permanent magnet brushless DC motor with powder iron metallurgy cores , 1997 .

[20]  A. J. Mitcham,et al.  Transverse flux motors for electric propulsion of ships , 1997 .

[21]  Barrie Mecrow,et al.  Design of an in-wheel motor for a solar-powered electric vehicle , 1997 .

[22]  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.

[23]  R. Kruse,et al.  Transverse flux reluctance motor for direct servodrive applications , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[24]  F. Profumo,et al.  Novel axial flux interior PM synchronous motor realized with powdered soft magnetic materials , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[25]  Y. Zhilichev,et al.  Three-dimensional analytic model of permanent magnet axial flux machine , 1998 .

[26]  Fabrizio Marignetti,et al.  DESIGN AND PERFORMANCE EVALUATION OF A NEW DISC-TYPE MICROMOTOR WITH ETCHED WINDINGS , 1998 .

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

[28]  B.E. Hasubek,et al.  Two dimensional finite element analysis of passive rotor transverse flux motors with slanted rotor design , 1999, Engineering Solutions for the Next Millennium. 1999 IEEE Canadian Conference on Electrical and Computer Engineering (Cat. No.99TH8411).

[29]  Lie-Tong Yan,et al.  Design of a permanent-magnet brushless DC motor drive for an electric bicycle , 1999, Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475).

[30]  H. Bulent Ertan,et al.  A comparison of torque capabilities of axial flux and radial flux type of brushless DC (BLDC) drives for wide speed range applications , 1999 .

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

[32]  Barrie Mecrow,et al.  Combined radial and axial permanent magnet motors using soft magnetic composites , 1999, IEMDC 1999.

[33]  Andrea Cavagnino,et al.  Axial flux interior PM synchronous motor: parameters identification and steady-state performance measurements , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[34]  F. Crescimbini,et al.  Axial-flux permanent magnet motor for direct-drive elevator systems without machine room , 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).

[35]  The design of a high speed flywheel mounted axial-flux permanent-magnet machine , 2000 .

[36]  J.-L. Schanen,et al.  Design of a permanent magnet planar synchronous micromotor , 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).

[37]  L. Solero,et al.  The use of soft magnetic materials for improving flux weakening capabilities of axial flux PM 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).

[38]  R. Wrobel,et al.  Towards optimisation of the disc-type brushless dc motor by changing the stator core structure , 2000 .

[39]  E. P. Nowicki,et al.  Design limitations of reduced magnet material passive rotor transverse flux motors investigated using 3D finite element analysis , 2000, 2000 Canadian Conference on Electrical and Computer Engineering. Conference Proceedings. Navigating to a New Era (Cat. No.00TH8492).

[40]  S. Ueno,et al.  Characteristics and control of a bidirectional axial gap combined motor-bearing , 2000 .

[41]  B. Mecrow,et al.  Design and testing of a universal motor using a soft magnetic composite stator , 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).

[42]  F. Crescimbini,et al.  High-efficiency low-volume starter/alternator for automotive applications , 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).

[43]  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).

[44]  J. M. Kim,et al.  A design of transverse flux motor with permanent magnet shield , 2001, ISIE 2001. 2001 IEEE International Symposium on Industrial Electronics Proceedings (Cat. No.01TH8570).

[45]  F. Profumo,et al.  A comparison between the axial flux and the radial flux structures for PM synchronous motors , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[46]  R.J. Hill-Cottingham,et al.  Multi-disc axial flux stratospheric aircraft propeller drive , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[47]  Alberto Tenconi,et al.  Propeller Drive Motors for High Altitude Aircraft , 2001 .

[48]  Andrea Cavagnino,et al.  Axial Flux Machines: Structures and Applications , 2001 .

[49]  Alberto Tenconi,et al.  Novel axial flux machine for aircraft propeller drive: design and modelling , 2002 .

[50]  P. C. Coles,et al.  Novel axial flux machine for aircraft drive: design and modeling , 2002 .