Improvements achieved by R&D Activities


Improvements of Car Performance

Comparison between urban Maglev and Steel Wheel-On-Rail System
Existing System at
National Science Museum
New System for Incheon
International Airport Line
Number of bogies 3 per car 4 per car

Improved curve running performance

Improved anti-vibration performance

Improved ride comfort

Improved levitation stability

Suspension System 2 sets/bogie 4 sets/bogie
Levitation Air Gap 10mm 8mm

Power consumption reduced by 36%

Gap Deviation ±5mm (at 70km/h) ±3mm (at 110km/h)

Improved running stability

Levitation Controller Redundancy not applied Redundancy applied

Increased availability

Steering Mechanism Not applied Hydraulic cylinder type
Lateral DisplacementAbsorption System Not applied Sliding Table employed
Vehicle Weight (Tare) 26.5 tons/car 19 tons/car

Reduced power consumption

Improved Levitation Stability

System Improvement

The number of bogies has been increased (3 > 4bogies/car) and
the levitation air gap is reduced (10 > 8mm).

Redundancies have been implemented in the levitation controller and electromagnet system.

Improved Components and Algorithm

The measuring range of the gap sensor has been increased and the control algorithm of the
controller has been improved.

Improved Power Supply System

Independent power supply units have been adopted for each bogey. An emergency backup
battery system has been installed.

The capacity of the power supply system has been increased.

Comparison of Running Performance

Comparison with the Existing Maglev Systems

Improved Levitation Stability

Improvement of Guideway Performance

  • Rail production by roll-forming process

    Rail production by roll-forming process

  • Manufacture of curved rails

    Manufacture of curved rails

Development of Articulation Type Turnouts

  • For left turnout

    For left turnout

  • For center setting

    For center setting

  • For right turnout

    For right turnout

Development of Third Rail System

검색 닫기