Cost-efficient and reliable trains, including high-capacity trains and high-speed trains

IP Coordinator: Xabier Perez – CAF


Project title:
IP1 Traction TD1 and Brakes TD5 – Phase 1

Total Project Value:
€ 29 201 993,71
from 01/09/2016 to 30/11/2018
S2R (H2020) co-funding:
€ 12 977 366,25
Laurent Nicod
Alstom Transport S.A
Complementary project of:


Traction subproject focuses on the improvement of seven technical and economical performances of the Traction system that have been agreed and defined in Roll2Rail. These performances have to be improved on five different train applications. Traction subproject addresses the Shift2Rail MAAP objectives as follows:

Railway system LCC reduction by reduction in validation & certification cost.
Operational reliability increase via higher reliability/availability of components.
Train & Line capacity increase through weight, volume and noise savings of Traction equipment.
Adhesion subproject focussed on contributing in formulating new performance specifications for Adhesion Recovery Systems. Moreover, improved requirements for Wheel Slide Protection test procedures should be developed, followed by new specifications for Automatic Test benches. The Adhesion subproject main specific objectives are:

Improvement of braking degradation limit in poor adhesion condition.
Management of all adhesion conditions in a way that brake distances are optimised.
Improvement of the overall train safety, which relies substantially on the management of the wheel/rail contact.
Reduction of wheel Life-Cycle-Costs through optimised wheel/rail contact in braking.

Project Structure

WP1 Top level requirements

The objective is to understand, specify, agree and update top-level specifications for traction systems from Roll2Rail with the operational and maintenance needs of operators to secure train operator needs for the year 2020 and beyond.
With these inputs, the top-level requirements of the next generation traction systems will be described for a range of applications covering tramway, metro, sub-urban, regional and high-speed. Market segment specific requirements are developed that serve as input for the traction demonstrators.

WP2 Development of lab prototypes

The main objective of this WP is the development of lab prototypes of innovative Traction components and/or subsystem, at TRL2 to TRL4 levels depending on members’ contributions and prepare the defined future traction systems of IP1 vehicle (TRL7) on train testing. The objectives to be attained in this work package are:
  • Continue and extend previous developments done in Roll2Rail on Traction systems for tramways, metro, sub-urban, regional and HST taking into account the different respective markets and technical constraints and needs of each segment.
  • Increase performance and power density of the traction equipment to contribute to a higher system capacity. The reduced volume of the traction system supports realizing new train architectures with additional potential to increase the number of seats and payload. A higher efficiency of the traction system will decrease the energy consumption and less material used will decrease the capital costs. This will contribute to lower initial and operational costs and thus increases the competitiveness of the railway system.
  • Increase line capacity by reducing dwell times by using a driven independently rotating wheel architecture.

WP3 Tools and methodologies to reduce noise and EMI emission

The objective of this task is to develop methodologies and simulation tools able to predict the acoustic noise and EMI emissions during the development phases of the traction system and sub-systems in order to reduce, as a result, the acoustic noise and EMI (Electro-magnetic interference) emission of future traction systems.

WP4 Tools and methodologies for increased reliability, availability and smart maintenance

The objective of this work package is to increase reliability and availability of the traction system and the related traction components, especially SiC (Silicon Carbide) power modules, sensors and inductive components. The main items to be improved and developed in this task are:
  • Improve knowledge of mission profiles
  • Improve knowledge of failure mechanisms of critical power (traction) components
  • Improve existing methodologies for life cycle estimation of critical power (traction) electronics, especially power modules
  • Improve methodology of reliability stress test
  • Improve models for reliability and lifetime prediction
  • Develop concepts for remote diagnostics and health monitoring
  • Develop concepts and architectures for higher availability
  • Develop concepts for predictive maintenance
The work in this task will focus on (but it is not limited to) main power critical components, e.g. SiC power modules, sensors and inductive components.

WP5 Requirements, specifications and developments for virtual validation and certification

The main objective of this work package is to contribute to a reduction of Rolling Stock capital costs by developing methods and simulation tools/methodologies which would enable a significant reduction in the number of traction component and system validations, homologations and physical test certifications.

WP6 Supply standardisation for key components & technology transfer

The objective is to deliver pre- standardization for key components (like semiconductors) and key technologies (like predictive maintenance, virtual certification) including an update of the relevant new technologies as well as access and transfer research results from on-going and forthcoming European research projects out of different industries, and also from research programmes outside of Europe..

WP7 Adhesion detection and low adhesion management

The objective of this work package is to map different adhesion conditions occurring in rail traffic. With the resulting adhesion catalogue, predictions to adhesion conditions dependant on seasonal influences and locations can be given. This data collection is the basis for a standardized adhesion detection concept.

WP8 Adhesion modelling and laboratory & track reproduction systems

The main objective of this WP is to specify and realise a WSP (Wheel Slide Protection) test bench demonstrator based on the results of WP7. Test bench design objectives are:
  • Reproducibility of test results.
  • Reproducibility of real track test results.
  • Standardized interoperable test method and reporting.
  • Reduce the number of track tests needed for certification of WSP systems.
  • Proposal for EN, UIC, etc. standards up to date to promote standard test rigs for WSP certification

Within the work package objectives, an adhesion model will be developed to better reproduce in laboratory the real low adhesion conditions happening on track. Based on the adhesion model standard test benches will be defined for the realisation of approval tests for low adhesion management systems, e.g. friction and/or electrical wheel slide protection

WP9 Project Management and Technical Coordination

WP10 Dissemination, communication and Exploitation




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Laurent Nicod

Project Coordinator

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This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No: 730668