Berdut Technology is a novel magnetic levitation system suitable for high speed train applications. This technology combines magnets and electromagnets to obtain levitation and propulsion. A Berdut array of permanent magnets is used to provide the levitation via skates that are located on both sides of the vehicle. Both the rails and the skates are based on permanent magnets therefore no energy is required for levitation. A linear motor located along the center of the vehicle provides the propulsion. Both, skate and linear motor use the same concept and working principle. The paper is divided into two parts: the first part describes the skate levitation, while the second part describes the linear motor. Finite element method was chosen to model and simulate both the skate levitation and the linear motor. Energy dissipation resulting from hysteresis and eddy current losses in the skate was determined. Stiffness and damping characteristics for the levitation skates are presented and validated. The efficiency and thrust force for the linear motor model are also presented along with experiments performed to validate the simulations. Once, validated the models are used to design a Maglev suspension and a linear motor for high-speed train applications.

1.
Jayawant
B. V.
, “
Electromagnetic suspension and levitation
,”
Reports on Progress in Physics
, vol.
44
, pp.
411
472
,
1981
.
2.
Thorton, Richard D., “Why the U.S. needs a maglev system,” Technology Review 1991.
3.
http://www.daedalusal4.utvinternet.co.uk/14%20%20Internal%20Transport.htm.
4.
Cory, S. A., “The Nature of Linear Induction. Motors, Machine Design.” August 23, pp. 111–113. 1984.
5.
Laithwaite, E. R., “A History of Linear Electric Motors,” MacMillian, 1987.
6.
Gieras, Jacek F., “Linear Induction Drives,” third edition, Oxford Science Publications, 1994.
7.
Riaz, M., “Linear Electrical Machines,” Course Notes of EE 5820, University of Minnesota, 1995.
8.
Poloujadoff, M., “The Theory of Linear Induction Machinery,” Oxford University Press, 1980.
9.
Nasar, S. A. and Boldea, I., “Linear Motion Electric Machines,” John Wiley & Sons, 1976.
10.
Transrapid Web site www.transrapid.de.
11.
Richard Freeman, “The Science of Maglev,” American Almanac, 1993
12.
www.amlevtrans.com.
13.
Oleg V. Tozoni, “Magnetodynamic levitation and stabilizing selfregulating system.” U.S. Patent No 5,652,472, Jul. 1997
14.
E. Berdut, “Levitation and linear propulsion system using ceramic permanent magnets and interleaved malleable steel,” U.S. Patent No 5,431,109, Jul. 1995.
15.
E. Berdut, “Levitation And Propulsion System Using Permanent Magnets And Interleaved Iron Or Steel.” U.S. Patent No 5,452,633, Oct. 1994.
16.
E. Berdut, “Permanent magnet type automotive vehicle suspension,” U.S. Patent No 5,584,367, Dec. 1996.
17.
E. Berdut, “Orbital and modular motors using permanent magnets and interleaved iron or steel magnetically permeable members,” U.S. Patent No 5,615,618, Apr. 1997.
18.
D. Serrano, A. Irizarrry and F. Just-Agosto, “Magnetically levitated Transport, Proof of Concept Development,” COINAR, San Juan, PR, 2003.
19.
L. A. Torres Morales and D. Serrano, “Finite Element Simulation of Magnetically levitated Train Using Berdut Poles.” COINAR. San Juan, PR, 2003
20.
J. Robles and D. Serrano, “Damping Characteristics of a Magnetic Levitation Train,” COINAR, San Juan, PR, 2003.
21.
L. A. Torres Morales, “Characterization and equivalent spring constant for a magnetic levitated train system using Berdut poles,” UPRM, 2001.
22.
J. Robles, “Dynamic Response and Damping Characteristics of a Berdut Skate for a Magnetically Levitated Train,” Master Thesis, UPRM, Dec. 2003.
23.
E. Medici, “Finite Element Simulations and Optimization of Berdut Linear Motor for a Novel Elevator System,” Master Thesis, UPRM, May. 2005.
24.
E. Me´dici and D. Serrano, “Finite Element Eimulations of Berdut linear motor,” XIV Congress on Numerical Methods and their Applications, Bariloche, Argentina, November 2004.
25.
E. Me´dici and D. Serrano, “Finite Element Simulations And Characterization Of Berdut Linear Motor,” COINAR, Congress of Engineering and Survey, San Juan, Puerto Rico, March 2004.
26.
O. Flores, “Analysis and Similation of EM Fields of Permanent Magnets DC Linear Motor used to Propulse a Magnetically Levitated Train,” Master Thesis, UPRM, June 2004.
27.
M. Schuwartz, “Principles of Electrodynamics,” DOVER, New York, 1987.
28.
J. Reitz and F. Mildford, “Fundations of Electromagnetic Theory,” Addison-Wesley Pub. Comp., Massachusetts, 1967.
29.
http://www.oulu.fi/atkk/tkpalv/unix/ansys6.1/content/thy_emg2.html.
30.
Maxwell® 2D, “A 2D Magnetostatic Problem,” Nov., 2002.
31.
Maxwell® 2D, “A 2D Transient Linear Motion Problem,” Nov. 2000.
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