A5014923252- Railway Systems and Energy Efficiency
- Electrical Contact Performance and Analysis
- Thermal Analysis in Power Transmission
- Electromagnetic Compatibility and Noise Suppression
- Advanced DC-DC Converters
- Multilevel Inverters and Converters
- Railway Engineering and Dynamics
- Power Systems and Renewable Energy
- Transportation Systems and Safety
- Electric and Hybrid Vehicle Technologies
- Electric Vehicles and Infrastructure
- Microgrid Control and Optimization
Roche (France)
2024
Nidec (France)
2024
Société Nationale des Chemins de Fer Français (France)
2018-2020
Laboratoire Plasma et Conversion d'Energie
2018-2019
École Nationale Supérieure d'Électrotechnique, d'Électronique, d'Informatique, d'Hydraulique et des Télécommunications
2018
Institut National Polytechnique de Toulouse
2018
This paper highlights the potential of medium-voltage dc electrification for railway traction. A method is proposed determining voltage level in order to guarantee, terms traffic, equivalent performances an ac-electrified line. Railroad type transport service, and network topology being given, analysis takes into account following constraints: at pantograph, heating overhead line rail-to-ground voltage. Once chosen, system compared with a standard 25-kV ac case French high-speed from Paris...
Today, in electric railways, the old dc supply systems are reaching their limits. To improve efficiency and increase railroad traffic, a new electrification has recently been proposed at 9 kV. It is now necessary to prepare migration of infrastructure rolling stock, using power electronic transformers (PETs), for adaptation this voltage level. For application, high reduced volume essential. This article clearly demonstrates that it possible achieve compact, high-power, isolated dc-dc...
Recently, the potential of medium voltage DC (MVDC) railway electrification has been highlighted in literature. Currently, classical systems reach their limits and it is not possible to operate locomotives at nominal ratings or increase traffic. Thus, this paper proposes a strategy for changing system from 1.5 kV 9 DC. A method with an intermediate system, keeping overhead line using feed-wire proposed. In order validate proposed solution real case study on French Railway network considered....
In order to improve the energy efficiency of railway traction power supply, a DC voltage 9 kV has recently been proposed. Beyond train this new system will allow connect several sources and/or loads (AC grid, storage, wind farm, solar panels, etc.). This "smart grid" require insulated DC-DC converters operating in medium frequency range (from 10 20 kHz) reduce size passive components (mainly transformer). and ranges targeted, is now possible thanks arrival on market modules based SiC...
This paper presents an optimum renewable energy sources (RES) and storage system (ESS) sizing for multiple railway substations. The is formulated as multi-objective optimization problem which aims to optimize three objective functions: load shaving, RES ESS capacities. Load shaving level of substation defined the percentage power consumption reduction compared maximum peak demand. solved using memetic algorithm several levels in five substations France. Results showed that 50% can be...
In order not to overload the fixed 1.5 kV DC electrical installations, an automatic device is embedded on trains. This system allows regulate tractive effort when pantograph voltage less than 1.3 kV. However, this regulation triggers unwanted fluctuations. paper focuses modelling of fluctuations using Energetic Macroscopic Representation (EMR) formalism. A real case considered assess impact train schedule regulation. The implementation energy storage (ESS) studied increase overhead line and...