Design of a novel bearingless permanent magnet motor for bioreactor applications

The paper presents a novel topology for a bearingless permanent magnet motor. This disk-shaped motor can be advantageously employed in delicate bioreactor processes. Both torque and bearing forces originate inside this magnetically levitated motor. Using 3D-FEM analysis, the optimal machine sizing parameters are evaluated with the goal to maximize torque while providing sufficient bearing forces to allow a stable operation.

[1]  J.W. Kolar,et al.  Novel Integrated Bearingless Hollow-Shaft Drive , 2006, Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting.

[2]  J.W. Kolar,et al.  Saturation effects in high acceleration bearingless motors , 2008, 2008 IEEE International Symposium on Industrial Electronics.

[3]  Wei-Shou Hu,et al.  Cell culture technology for pharmaceutical and cell-based therapies , 2005 .

[4]  Natale Barletta,et al.  Principle and Application of a Bearingless Slice Motor , 1997 .

[5]  J.W. Kolar,et al.  Comparison of winding concepts for bearingless pumps , 2007, 2007 7th Internatonal Conference on Power Electronics.

[6]  Akira Chiba,et al.  BasicCharacteristic oftheMulti-Consequent - PoleBearinglessMotor , 2007 .

[7]  S. Whitley,et al.  Development of active magnetic bearings for high speed rotors , 1990, International Conference on Magnetics.

[8]  Murray Moo-Young,et al.  Clean-in-place systems for industrial bioreactors: Design, validation and operation , 2005, Journal of Industrial Microbiology.

[9]  T. Nussbaumer,et al.  Novel Magnetically Levitated Two-Level Motor , 2008, IEEE/ASME Transactions on Mechatronics.

[10]  Juan A. Asenjo,et al.  Bioreactor System Design , 1994 .

[11]  Johannes Tramper,et al.  Basic Bioreactor Design , 1991 .

[12]  J.W. Kolar,et al.  Magnetically Levitated Homopolar Hollow-Shaft Motor , 2010, IEEE/ASME Transactions on Mechatronics.

[13]  W. Amrhein,et al.  Design aspects of bearingless slice motors , 2005, IEEE/ASME Transactions on Mechatronics.