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Auxiliary converters: State-of-the art technology, reliability and efficiency for all rolling stock


Auxiliary converters at a glance

  • Extensive range of service proven solutions for all types of rolling stock
  • Worldwide footprint close to our customers
  • A wide range of state-of-the-art solutions supported by Innovation and R&D programs
  • Efficiency, reliability and total cost of ownership

Alstom’s extensive range of highly reliable, efficient, low maintenance and cost-effective auxiliary converters is suitable for use on all types of railway vehicles, LRV’s, metros, regional, high-speed trains and locomotives.

Adapted to all applications

Alstom auxiliary converters can be supplied for all types of power supply deployed on electrified urban and mainline networks and for a wide range of climate and environmental conditions. They are available in a wide range of cooling system options: force air cooled, naturally-cooled and water-cooled. They are  also available in various packaging options including: roof-mounted, underframe-mounted or interior-mounted, depending on the requirements of the application.

Innovation and performance

Alstom leverages its extensive innovation capabilities and research and development programmes to design and develop systems featuring the latest semiconductor technologies including Silicon Carbide (SiC). Operators benefit from our long-standing experience together with our development tools, simulation tools and validation procedures to achieve high efficiency, high reliability and low operating costs.

Close to market

With Alstom representation all around the world, our customers know that they can receive the support where and when they need it, suited to their individual requirements.


Alstom’s technology solutions are based on key eco-design principles: high energy efficiency, lightweight, low noise, low maintenance, low lifecycle costs and highly recyclable.

units manufactured every year
units sold worldwide in various environmental conditions
years of experience in manufacturing auxiliary converters

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