Journal Publications

[1]      J. Bird and T. A. Lipo, “Characteristics of an electrodynamic wheel using a 2-D steady-state model,” IEEE Transactions on Magnetics, vol. 43, pp. 3395-3405, Aug. 2007.  DOI: http://dx.doi.org/10.1109/TMAG.2007.900572

[2]      J. Bird and T. A. Lipo, “A 3D steady-state magnetic charge finite element model of an electrodynamic wheel,” IEEE Transactions on Magnetics, vol. 44, pp. 253-265, Feb. 2008. DOI: http://dx.doi.org/10.1109/TMAG.2007.911597

[3]     J. Bird and T. A. Lipo, “Calculating the forces created by an electrodynamic wheel using a 2D steady-state finite element model,” IEEE Transactions on Magnetics, vol. 44, pp. 365-372, Mar. 2008. DOI: http://dx.doi.org/10.1109/TMAG.2007.913038

[4]      J. Bird and T. A. Lipo, “Modeling the 3-D rotational and translational motion of a Halbach rotor above a split-sheet guideway,” IEEE Transactions on Magnetics, vol. 45, pp. 3233-3242, Sept. 2009. DOI: http://dx.doi.org/10.1109/TMAG.2009.2021160

[5]      N. Paudel and J. Z. Bird, “General 2-D steady-state force and power equations for a traveling time-varying magnetic source above a conductive plate ” IEEE Transactions on Magnetics, vol. 48, pp. 95-100, Jan. 2012. DOI: http://dx.doi.org/10.1109/TMAG.2011.2161638

[6]      N. Paudel, S. Paul, et al., “General 2-D transient eddy current force equations for a magnetic source moving above a conductive plate,” Progress in Electromagnetic Research B, vol. 43, pp. 255-277, 2012. DOI: http://dx.doi.org/10.2528/PIERB12072414

[7]      S. Paul, D. Bobba, N. Paudel and J. Bird, “Source Field Modeling in Air Using Magnetic Charge Sheets”, IEEE Transactions on Magnetics,Vol. 48, No. 11, Nov. 2012 DOI:http://dx.doi.org/10.1109/TMAG.2012.2201927

[8]     N. Paudel and J. Z. Bird, “Modeling the dynamic electromechanical suspension behavior of an electrodynamic eddy current maglev device,” Progress in Electromagnetic Research B, vol. 49, pp. 1-30, 2013. DOI: http://dx.doi.org/10.2528/PIERB12121115

[9]     V. M. Acharya and J. Z. Bird, “A flux focusing axial magnetic gear,” IEEE Transactions on Magnetics, vol 49, pp 4092-4095, July, 2013. DOI: http://dx.doi.org/10.1109/TMAG.2013.2248703

[10]    W. Bomela, J. Z. Bird, and V. M. Acharya, “The performance of a transverse flux magnetic gear,” IEEE Transactions on Magnetics, vol. 50, No. 1, Article # 4000104, Jan. 2014. DOI: http://dx.doi.org/10.1109/TMAG.2013.2277431

[11]    S. Paul and J. Z. Bird, “A 3-D analytic eddy current model for a finite width conductive plate,” COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, vol. 33, Iss: 1/2, pp 688-706, 2014.  DOI: http://dx.doi.org/10.1108/COMPEL-03-2013-0083

[12]    Uppalapati K. and J. Z. Bird, “An Iterative Magnetomechanical Deflection Model for a Magnetic Gear”, IEEE Transaction on Magnetics, Vol. 50. No. 2, Article #7005904, Feb. 2014. DOI: http://dx.doi.org/10.1109/TMAG.2013.2283018

[13]    S. Paul, W. Bomela, N. Paudel,  J.Z. Bird., “3-D Eddy Current Torque Modeling” , IEEE Transactions on Magnetics, , Vol. 50. No. 2, Article #7022404, Feb. 2014,  DOI: http://dx.doi.org/10.1109/TMAG.2013.2285566

[14]    K. Uppalapati, W. Bomela, J. Bird, M. Calvin, J. Wright, “Experimental Evaluation of Low-Speed Flux Focusing Magnetic Gearboxes,” Accepted to: IEEE Transactions on Industrial Applications,2014. DOI: http://dx.doi.org/10.1109/TIA.2014.2312551

[15]    S. Paul and J. Z. Bird, “Analytic 3-D eddy current model of a finite width conductive plate including edge-effects”, International Journal of Applied Electromagnetics and Mechanics, Vol. 45, no 1-4, pp. 565-571, 2014. DOI: http://dx.doi.org/10.3233/JAE-141874

[16]    K. Uppalapti and J. Z. Bird, “Magnetic gear axial scaling analysis using magnetomechanical deflection analysis “, International Journal of Applied Electromagnetics and Mechanics, Vol. 45, no 1-4, pp. 565-571, 2014. DOI: http://dx.doi.org/10.3233/JAE-141878

[17]    N. Paudel, S. Paul, W. Bomela, J.Z. Bird., “Dynamic Electromechanical Eddy Current Force Modeling,” Accepted to: COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, Vol 33. Issue 6, pp. 2101-2120, 2014
DOI:  http://dx.doi.org/10.1108/COMPEL-08-2013-0266

[18]    S. Paul, J. Wright, and J. Z. Bird, “3-D Steady-State Eddy-Current Damping and Stiffness Terms for a Finite Thickness Conductive Plate,” IEEE Transactions on Magnetics, vol. 50, Article #: 6301404, Nov., 2014. DOI:  http://dx.doi.org/10.1109/TMAG.2014.2327097

Conference Publications

[1]       J. Bird and T. A. Lipo, “An electrodynamic wheel: an integrated propulsion and levitation machine,” in Electric Machines and Drives Conference, June, 2003, June 1-4, pp. 1410-1416. DOI: http://dx.doi.org/10.1109/IEMDC.2003.12106

[2]       J. Bird and T. A. Lipo, “A preliminary investigation of an electrodynamic wheel for simultaneously creating levitation and propulsion,” in 18th International Conference on Magnetically Levitated Systems and Linear Drives, Shanghai, China, 2004, pp. 316-325.

[3]       J. Bird and T. A. Lipo, “Electrodynamic wheel and flat passive track topologies capable of creating lift, thrust and guidance forces simultaneously,” in 8th International Symposium On Magnetic Suspension Technology, Dresden, Germany, Sept. 26-28, Sept. 2005.

[4]       J. Bird and T. A. Lipo, “A study of the effect of using electrodynamic wheels in series,” in 8th International Symposium on Magnetic Suspension Technology, Dresden, Sept. 26-28, Sept. 2005, pp. 52-56

[5]       J. Bird and T. A. Lipo, “The experimental verification of lift, thrust and guidance forces for an electrodynamic wheel rotating over a split-sheet guideway,” in 19th International Conference on Magnetically Levitated Systems and Linear Drives, Dresden, Germany, Sept. 13-15, 2006.

[6]       J. Bird, “Modelling a 3D eddy current problem using the weak formulation of the convective A*-phi  steady state method,” in Comsol Conference 2009, Boston, MA, USA, Oct. 8-10, 2009. http://www.comsol.com/paper/modeling-a-3d-eddy-current-problem-using-the-weak-formulation-of-the-convective–6387

[7]       J. Bird, “Evaluating the Guidance Force Capabilities of Flat Passive Maglev Guideway Topologies Using the A-Phi Formulation,” presented at the Compumag 2009, Florianopolis, Brasil, Nov. 22-26, Nov. 22-26, 2009.

[8]       S. Paul, D. Bobba, et al., “Three dimensional transient modeling of a Halbach rotor moving above a conductive guideway using fictitious magnetic charge,” presented at the 14th Biennial IEEE Conference on Electromagnetic Field Computation, Chicago, IL., 2010, May 9-12. DOI: http://dx.doi.org/10.1109/CEFC.2010.5481464

[9]       N. Paudel and J. Bird, “2D Analytical Based Model of a Rotor Moving Over a Conductive Guideway,” presented at the 14th Biennial IEEE Conference on Electromagnetic Field Computation, Chicago, IL, May 9-12, 2010.

[10]     N. Paudel, J. Bird, et al., “A Transient 2D model of an electrodynamic wheel moving above a conductive guideway,” in IEEE International Electric Machines and Drives Conference, Niagra Falls, Canada, May 15-18, 2011. DOI: http://dx.doi.org/10.1109/IEMDC.2011.5994657

[11]     J. Bird, “Magnetic Rolling Resistance,” presented at the IEEE International Magnetics Conference, Taipei, Taiwan, April 25-29, 2011.

[12]     N. Paudel, J. Z. Bird, et al., “Modeling the dynamic suspension behavior of an eddy current device ” in IEEE Energy Conv. Cong. Exp., Phoenix, AZ, 17-22 Sept., 2011, pp. 1692-1699. DOI: http://dx.doi.org/10.1109/ECCE.2011.6063986 [2 citations] [13]     K. Uppalapati and J. Bird, “A flux focusing ferrite magnetic gear,” presented at the Power Electronics, Machines and Drives Conference, Bristol, UK., March 27-29, 2012. DOI: http://dx.doi.org/10.1049/cp.2012.0303

[14]     S. Paul, D. Bobba, et al., “Three Dimensional Magnetic Charge Modeling of Permanent Magnet Rotors,” presented at the IEEE International Magnetic Conference (INTERMAG), Vancouver, Canada, May 7-11th, 2012.

[15]     S. Paul and J. Bird, ” Three dimensional analytic modeling of the field distribution in a conductive region due to a moving magnetic rotor ” presented at the IEEE International Magnetic Conference (INTERMAG), Vancouver, May 7-11, 2012.

[16]     K. Uppalapati and J. Bird, “A high-performance flux focusing magnetic gear using ferrite magnets,” presented at the American Society of Naval Engineers – Electric  Machines Technology Symposium, Philadelphia, PA, May 23-24, 2012 https://www.navalengineers.org/ProceedingsDocs/EMTS2012/Papers/53_Bird_EMTS2012Paper.pdf

[17]     S. Hazra, S. Bhattacharya, et al., “Ocean energy power take-off using oscillating paddle,” in 4th IEEE Energy Conversion Congress & Exposition, Raleigh, NC, Sept. 15-20th, 2012. DOI: http://dx.doi.org/10.1109/ECCE.2012.6342793

[18]     K. K. Uppalapati, J. Z. Bird, et al., “Performance of a magnetic gear using ferrite magnets for low speed ocean power generation,” in 4th IEEE Energy Conversion Congress & Exposition, , Raleigh, NC, Sept. 15-20th, 2012.   DOI: http://dx.doi.org/10.1109/ECCE.2012.6342498

[19]     V. M. Acharya and J. Z. Bird, “A flux focusing axial magnetic gear,” in Joint IEEE International Magnetics (INTERMAG) and MMM Conference Chicago, 14-18 Jan., 2013.

[20]     P. Padmanathan, J. Z. Bird, “A continuously variable magnetic gear”, presented at 9th IEEE International Electric Machines and Drives Conference, Chicago, IL, May 12-15, 2013, DOI: http://dx.doi.org/10.1109/IEMDC.2013.6556277

[21]     K. Uppalapati and J. Z. Bird, “An Iterative Magnetomechanical Deflection Model for a Magnetic Gear:, presented at the  19th International Conference on the Computation of Electromagnetic Fields (COMPUMAG),  June 30 – July 4th, 2013, Budapest, Hungary.

[22]      S. Paul, W. Bomela, J. Z. Bird, “3-D Eddy Current Torque Modeling”, presented at the 19th International Conference on the Computation of Electromagnetic Fields (COMPUMAG),  June 30 – July 4th, 2013, Budapest, Hungary.

[23]    W. Bomela, J. Z. Bird, A. M. Vedanadam, “The performance of a transverse flux magnetic gear”, presented at The 3rd International Symposium on Advanced Magnetic Materials and Applications (ISAMMA 2013), Taichung, Taiwan, July 21 – July 25, 2013

[24]       S. Paul, and J. Z. Bird, “An  Analytic Based 3-D Eddy Current Model of a Finite Width Linear Conducting Plate with an Arbitrary Source”, presented at the 16th  International Symposium on Applied Electromagnetics and Mechanics, Quebec, Canada, July 31 – Aug. 2, 2013

[25]      K. Uppalapati and J. Z. Bird, “Mechanical Displacement Modelling of a Magnetic Gear Steel Bar”, presented at the 16th International Symposium on Applied Electromagnetics and Mechanics (ISEM), Quebec, Canada, July 31 – Aug. 2, 2013

[26]     K. K. Uppalapati, J. Z. Bird, “Construction of a Low Speed Flux Focusing Magnetic Gear,” presented at The 5th IEEE Energy Conversion Congress & Exposition (ECCE2013), Denver, CO,  Sept. 15-19th, 2013. DOI: http://dx.doi.org/10.1109/ECCE.2013.6646976

[27]     Acharya, V. M., M. D. Calvin and J. Z. Bird (2014). A low torque ripple flux focusing axial magnetic gear. presented at 7th IET Inter. Conf. Power Elect. Mach. Drives. Manchester, UK. April 2014. DOI: http://dx.doi.org/10.1049/cp.2014.0476

[28]     Bird, J. Z., “Marine hydrokinetic power take-off using magnetic gearing”, presented at 2nd Marine Energy Technology Symposium, Seattle, WA, April 2014 http://www.globalmarinerenewable.com/images/pdf/METS_PAPERS_VII/75-Bird.pdf

[29]     Padmanathan, P. and J. Z. Bird, “A continuously variable magnetic gear performance comparison”,  to be presented at IEEE International Magnetics Conference (INTERMAG). Dresden, Germany. May 2014.

[30]     Paul, S. J. Wright and J. Z. Bird, “3-D Steady-State Eddy Current Damping and Stiffness Terms for a Finite Thickness Conductive Plate “,  to be presented at IEEE International Magnetics Conference (INTERMAG). Dresden, Germany. May 2014.

[31]     K. Uppalapati, J. Wright, M. Calvin, J. Z. Bird, “Efficiency Analysis of Magnetic Gears”, to be presented at Sixteenth Biennial IEEE Conference on Electromagnetic Field Computation, Annecy, France, May 25-28, 2014.

[32]     V. M. Acharya, J. Bird, S. Paul, “Scaling Analysis of Radial and Axial Rotary Magnetic Devices”, to be presented at Sixteenth Biennial IEEE Conference on Electromagnetic Field Computation, Annecy, France, May 25-28, 2014.

[33]     K. K. Uppalapati, J. Z. Bird, M. Calvin, J. Wright, J. Pritchard, W. Williams “A Magnetic Gearbox with an Active Region Torque Density of 239Nm/L,” Accepted to The 6th IEEE Energy Conversion Congress & Exposition (ECCE2014), Pittsburgh, PA,  Sept. 14-18th, 2014. DOI: http://dx.doi.org/10.1109/ECCE.2014.6953585

Patents

[1] R. Blissenbach., J. Bird, Methods and apparatus for preventing demagnetization in interior permanent magnet machines, Nov. 2010, U.S. patent number 7,843,100
[2] R. Blissenbach, K. Le, D.D. Dang, J. Bird, Method and apparatus for a permanent magnet machine with segmented ferrite magnets, Mar. 2011, U.S. patent number 7,902,711
[3]  J. Bird, R. Blissenbach, D. D. Dang, E. Hatch, K. Le, Method and apparatus for a permanent magnet machine with a direct liquid cooled stator, Aug, 21, 2012,  Pub. No.: S 8247933 B2
[4] J. Bird,Flux focusing magnetic gear assembly using ferrite magnets or the like, April 8, 2013, International Patent No: WO2013052516 A1

Dissertation Publications

[1] Uppalapati K., An investigation into the torque density capabilities of flux-focusing magnetic gearboxes, Ph.D. granted Dec. 2015 Proquest link to dissertation

[2] Subra P., Three Dimensional Steady State and Transient Eddy Current Modeling,   Ph.D. granted: May, 2014. Proquest Link to dissertation

[3] Paudel N., Dynamic Suspension Modeling of an Eddy-Current Device: An Applicaiton to MAGLEV, Ph.D. granted: Dec. 2012. Proquest link to dissertation

Thesis Publications

[1] Calvin, M., A Comparative Study Between Axial and Radial Flux-Focusing Magnetic Gear Topologies and Mechanical Gearboxes, M.S. Thesis, May 2015.

[2] Vedanadam M. A., Design of an Axial Flux Focusing Magnetic Gear, M.S. Thesis,Dec. 2013. Library link to thesis

[3] Padmanathan P., Design of a Continuously Variable Magnetic Gear, M.S Thesis, Dec. 2013. Library link to thesis

[4] Bobba D., 3-D Analytic Based Modeling of an Electrodynamic Wheel and the Performance of Electrodynamic Wheels in series for Urban Transportation, M.S.Thesis, Dec. 2011. [Now at University of Wisconsin – Madison] Library link to thesis