4 State-of-the-Art: AMT American Maglev Tech.NameTeam Maglev
125 mphTop Speed1.4 ft/s 50 tonsWeight0.5 lb < $20
Million/MileCost$523
Slide 4
System Components AC Drive LSM Track rails AC Drive LSM AC
Reactor Power Resistors Track Rails
Slide 5
Design Changes Levitation, Stabilization Track rails with
magnets Magnets spin along one rail Ball bearings Spacers Optimal
rail spacing
Slide 6
Design Changes - Propulsion LSM Windings 5 wires per phase (18
gauge) to increase magnetic field strength of LSM Provide uniform
propulsion Train Car Halbach array 4 disc magnets
Slide 7
7 Performance AC Drive Sinusoidal output current desired AC
reactor utilized to smooth drive output Peak output current: 10 A
Output Voltage:208Vrms Frequency range used: 2.7 Hz 5.5 Hz
Slide 8
8 Performance LSM Secondary Lorentz ForceI= 10 A, B= 1.2 T, L=
0.0195m Secondary Primary Max Force (single wire) Force (5 wires) =
0.051*5 = 0.255lbf
Slide 9
11 Performance LSM Optimal air gap: 2 mm Max air gap: 4 mm
Current: 9.1 A Frequency: 5.5 Hz
Slide 10
4 Design Objectives CriteriaProposed Specifications Achieved
Specifications LevitationNo contact between train and track
Vertical levitation with horizontal contact Vertical Stability+/- 6
mm+/- 1 mm Horizontal Stability +/- 4 mm+/- 0 mm Torsional
Stability +/- 10 degrees+/- 0 degrees Propulsion0 - 5 mph0 -1 mph
Train LoadingMust support 0.5 lbsSupported 0.11 lb
Slide 11
4 Material Costs ProductCost Neodymium Magnets Free Magnetic
Strip$180 18 Gauge Wire $70 AC Drive$255 AC ReactorFree Balsa
Wood$5 Bearings$13 Total Cost$523
Slide 12
11 Discussion Project Conclusion 2 failed designs Pseudo-maglev
achieved Good platform for future senior design projects Our Design
Electrodynamic Suspension
