Levitation
The JR-Maglev levitation train uses an Electro-dynamic Suspension (EDS) system. Moving magnetic fields create a reactive force in a conductor because of the magnetic field induction effect. This force holds up the train. The maglev-trains have superconducting magnetic coils, and the guide ways contain levitation coils.
When the trains run at high speed, levitation coils on the guide way produce reactive forces in response to the approach of the superconducting magnetic coils onboard the trains.
EDS has the advantage of larger gaps than EMS, but EDS needs support wheels which are employed in low speed running, because EDS can't produce a large levitation force at low(er) speeds (150 km/h or less in JR-Maglev). However, once the train reaches a certain speed, the wheels will actually retract so that the train is floating. JR-Magle floats 10 centimeters (approx. 3.9 inch) above the guideway.
Guide
Levitation coils which are located on the guide way generate guiding and stabilizing forces also.
Driving
JR-Maglev is driven by a Linear Synchronous Motor (LSM) System. This system is needed to supply power to the coils at the guide way.um speed of 581 km/h (361 mph) (world speed record for railed vehicles) in a manned vehicle run.Yamanashi Experiment Lines are facilities that currently have a practical use. It includes about 18.4 km of track (including 16.0 km of tunnels). The test track is currently being extended from 18.4 km to 42.8 km with completion expected for 2013/14.
