Project Profile: Siemens Desiro HC High-Capacity EMU Platform

The Siemens Desiro HC (High Capacity) is a modular electric multiple unit (EMU) platform engineered for high-density regional and intercity routes. It integrates a hybrid single and double-decker configuration to maximize passenger volume while leveraging advanced energy recuperation systems to optimize operational efficiency and reduce lifecycle costs across demanding networks.

Technical Specifications

The Desiro HC platform is designed for operational flexibility and high throughput on congested corridors. Its core design principle is a combination of single-decker end cars and double-decker intermediate cars. This configuration provides level, step-free access in the end cars, compliant with modern accessibility standards, while maximizing seating capacity in the center of the train. The distributed traction system delivers up to 4,000 kW of power across eight driven axles, enabling rapid acceleration profiles crucial for regional services with frequent stops.

Energy efficiency is a central design pillar. The train’s electrodynamic braking system facilitates high rates of energy recuperation, feeding substantial power back into the grid and reducing overall consumption by up to 25% compared to legacy fleets. This is augmented by intelligent auxiliary power management systems that optimize energy use for HVAC, lighting, and onboard systems. The vehicle’s architecture is built on a high-performance communication network integrating an ethernet-based Train Control Network (TCN) and Train Operator Network (TON), ensuring robust data transmission for diagnostics, train control (including ETCS compatibility), and passenger information systems.

Key Takeaways

• High Capacity and Accessibility: The unique hybrid single- and double-decker design maximizes passenger capacity on key routes while providing fully accessible, low-floor boarding zones, addressing both peak demand and inclusivity requirements.
• Optimized Lifecycle Costs: A focus on energy efficiency through regenerative braking and intelligent power management significantly reduces operational expenditures. The platform’s proven reliability and modular design also contribute to lower long-term maintenance costs.
• Scalable and Modular Platform: The Desiro HC’s adaptability, allowing for various car combinations and lengths, makes it a versatile solution for operators to scale their fleet according to specific network demands and passenger growth projections.

FAQ

What makes the Siemens Desiro HC energy efficient?

The Siemens Desiro HC achieves high energy efficiency primarily through its advanced regenerative braking system, which converts kinetic energy during deceleration back into electrical energy and feeds it into the power grid. Additionally, its lightweight construction and intelligent onboard systems minimize power consumption from auxiliary units like air conditioning and lighting, further reducing its environmental footprint and operational costs.

Who builds and operates the Desiro HC train?

The Desiro HC train is designed and manufactured by Siemens Mobility, a global leader in railway technology. Major operators who have deployed the Desiro HC in their fleets include Deutsche Bahn (DB) in Germany for the Rhine-Ruhr Express (RRX) network and Israel Railways (ISR) for its national passenger services.