EWB 154 R Linear

The linear eddy current brake not only offers enhanced safety levels but also economic advantages. This system operates without contact with the rail and the braking force remains constant even at high speeds.

CUSTOMER BENEFITS APPLICATIONS n Independent of track condition and wheel/ n High-speed trains rail coefficient of adhesion n No mechanical contact, therefore wear-free n No impact on TSI infrastructure n Controllable braking force n Strong braking force at high speeds n Functions also as service brake n No noise, no development of odors n Braking without brake dust EWB 154 R Example of EWB 154 R design applied to the ICE-3 Velaro D 09.2018 P-1230-EN

FUNCTION The brake consists of a magnetic yoke with electrical coils that are positioned along the rail and magne- tized with alternating north and south poles. When the coils are put under current while the brake is not in motion, a symmetrical is gen- Axle bearing Carrier Braking force lever transfer Integral beam Coils rod Track Air bellows erated that includes the rail head and exerts a vertical magnetic force (F). When the is moved along the rail it induces TECHNICAL DATA a non-stationary magnetic field in the rail head and n Braking force at 200 km/h: ~ 21 kN per unit generates electrical potential that causes eddy cur- n Length including end elements: 1540 mm rents. These disturb the magnetic field in such a way that the magnetic force (F) is diverted against the n Width of magnet: 130 mm direction of travel. n Height of magnet: 269 mm The horizontal component of this magnetic force is n Total weight: 900 kg per unit used as braking force (F ). B n Power requirement: 86 kW per unit

Functioning of linear eddy current :

v = 0 v > 0

Yoke Pole core Coil

FB Air gap Rail FA F (v > 0) B (v = 0) B (v > 0)

F ... magnetic force FB ... braking force FA ... attraction force

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