HERMES
HERMES is a containerized hydrogen power generation system designed to supply traction power to existing electric locomotives.
The system integrates hydrogen storage, fuel cell energy conversion and onboard energy management into a single modular platform installed on a standard railway wagon. HERMES enables electrified locomotives to operate on non-electrified railway lines without modification of the locomotive traction system.
- Simple and robust axle counting solution
- 2 wire connection from indoor to outdoor equipment
- Up to 20 km distance between sensor and BO23 evaluator
For infrastructure managers
HERMES offer a powerful tool to avoid expensive electrification while preserving the greening of transport on a certain route. A fleet of HERMES units which are rented to rolling stock operators and driven on a certain route requires multiple times less CAPEX investment than route electrification.
For rolling stock operators
HERMES offers a possibility to increase operational capacity of electric locomotives to 100% of the available network, regardless of electrification. Also, HERMES offers increase of operational flexibility by enabling electric locomotives to use electrification where available and hydrogen where electrification is not available.
Railway applications
- Operation of existing electric locomotives on non-electrified railway lines
- Enabling operation of electric powered rolling stock under any type of electrification
- Enabling hydrogen-powered traction for diesel locomotives (optional integration of a pantograph on the system platform, enabling the use of overhead line energy when available)
- Retrofitting diesel powered rolling stock to hydrogen powered using HERMES technology
- Reduction of axle load enabling utilization of lower axle load railway tracks
Applications beyond railway
- Emergency power supply during major grid failures
- Rapid deployment of temporary microgrids
- Clean mobile energy source for protected natural areas
- Temporary power supply for infrastructure works or remote locations
- Mobile power generation for large events or construction sites
- Deployment of temporary electric vehicle charging infrastructure
Functionality
HERMES is designed as a self-contained traction power unit that can be integrated with existing electric locomotives. The system is engineered to match the electrical input characteristics of standard electric locomotives, enabling operation with minimal modifications to the locomotive itself. Installed on a dedicated wagon platform, HERMES provides a modular energy source that allows electric locomotives to operate beyond electrified railway infrastructure. Hydrogen can be refuelled at dedicated stations or through rapid replacement of 20’ hydrogen storage container, allowing quick turnaround and continuation of operation.
Safety
Accordance with relevant railway safety and engineering standards and incorporates multiple layers of system protection and monitoring. The system architecture considers key railway and industrial standards including: EN 45545 (Fire protection for railway vehicles), EN 50155 (Electronic equipment on rolling stock), EN 61373 (Shock and vibration for railway equipment), EN 50124 / EN 50153 (High-voltage electrical safety), Relevant hydrogen safety and pressure system regulations. Hydrogen handling systems are designed with controlled ventilation, continuous monitoring and fail-safe safety functions.
Maintenance
The system is designed for minimal maintenance requirements and alignment with standard locomotive service intervals and coincide with the periodic maintenance schedules of the locomotive. Components that require periodic replacement are positioned in easily accessible service locations, allowing simplified maintenance procedures. System redundancy enables degraded operation mode.
Connectivity / Interfacing
Minimal modifications to the locomotive enable an electrical interface that supplies traction power in a manner as energy received through the pantograph. The locomotive retains full operation via pantograph while gaining the ability to operate using energy supplied by the system. The platform is compatible with both freight and passenger train configurations and supports standard screw couplings or modern automatic couplers.
Analytics
Integrated diagnostic and monitoring procedures are automatically activated during system startup and operation through a network of sensors and measurement points. These monitoring functions track the complete energy path from hydrogen storage to locomotive traction input, supervising both hydrogen flow and electrical power generation.