High-efficiency UPS system 50kWh for rail transit

Modular, high-efficiency UPS systems with 50kWh energy storage are available for rail transit, offering redundancy, hot-swappable modules, and compatibility with critical signaling and control systems. OverviewHigh-efficiency UPS systems for rail applications are designed to ensure continuous, stable power for critical loads such as signaling, ETCS control systems, passenger services, and station management. These systems typically integrate modular, redundant architectures with energy storage systems (ESS) sized according to the required backup duration, such as 50kWh for medium-duration autonomy.

Key Features

Modular Design: Systems like ABB and Centiel offer hot-swappable modules, allowing maintenance or replacement without interrupting the critical load. This reduces mean time to repair (MTTR) and simplifies spare parts management. High Efficiency: Modern UPS solutions employ IGBT-based double conversion (AC/DC rectifier and DC/AC inverter), achieving efficiencies up to 95%, minimizing energy losses and operational costs.

Redundancy and Reliability: Dual-input or dual-frequency UPS systems can operate from two independent power sources (e.g., public grid and catenary rail power). In case of a fault in both networks, the battery pack provides backup, ensuring uninterrupted operation. Battery Integration: Compatible with Lithium-ion, NiCad, VRLA, and salt-based batteries, allowing flexible configuration for 50kWh or higher energy storage.

Battery systems are designed for long life, high reliability, and compliance with railway safety standards. Compliance: Systems are certified to EN 50121 and EN 50171, ensuring suitability for railway environments, including electromagnetic compatibility and safety-critical applications. Scalability: Modular UPS systems can be expanded to meet higher power demands, supporting multiple modules in parallel to increase capacity and redundancy.

Applications in Rail Transit

Signaling and Control Systems: Continuous power for ETCS and ERTMS-compliant devices. Station Operations: Backup for building management systems, lighting, and passenger services. Substations: AC/DC converters and rectifiers for auxiliary devices and measurement relays.

High-

Speed Lines: Reliable power supply without the need for diesel generators, reducing emissions and noise.

Advantages

Reduced Downtime: Online module replacement and redundancy minimize service interruptions. Energy Efficiency: High-efficiency conversion reduces operational costs and heat generation. Flexible Deployment: Can operate with multiple battery types and power sources, including dual-frequency networks.

Environmental Benefits: Eliminates or reduces reliance on diesel generators, lowering greenhouse gas emissions.

Example Systems

Centiel Cumulus

Power RW: Modular, redundant UPS with battery integration, dual-frequency operation, and EN 50121 certification.

SK

E 50kVA Modular UPS: High-efficiency, hot-swappable modules, scalable from 50kVA to 500kVA, suitable for medium to large installations.

Borri Railway UP

S: DC and AC UPS systems with Ni-Cd batteries, redundant parallel configuration, and compliance with ETCS/ERTMS standards. These systems provide a robust, scalable, and energy-efficient solution for rail transit operators seeking reliable backup power with 50kWh energy storage capacity.