Propulsion Converters - The Heart of the Train
Based on Bombardier’s field proven modular concept, MITRAC (Modular Integrated TRACtion system) converters can be configured to fit any customer need perfectly and enable operators to run passenger and freight services efficiently and economically using any conventional power source.
The converter is the direct link between the energy source and a train’s drive and control system. It converts energy into a form the train can use. And it does it on rail networks as diverse as France, Brazil, China, India, Germany, North America and the United Kingdom. In Europe for instance, trains fitted with MITRAC propulsion and control equipment can fulfill multiple functions such as power conversion on AC as well as DC supplies with full recuperation during braking, providing efficient, uninterrupted transportation performance in regions with different power systems as well as across national borders. In North America, the majority of metropolitan regions currently have networks with electrification limited to downtown and central areas, but most rural and transcontinental services still rely on diesel. Dual power systems with MITRAC traction converters are able to provide traction power from both catenary and diesel engines, and are thus the ideal solution for seamless commuter services providing convenient one-seat rides. For diesel locomotives, traction converters process the power coming from up to four individually controlled fuel-efficient diesel engines in order to fulfill the latest emission standards.
The MITRAC converter modules, the core elements of the converters are optimally designed to meet precise customer requirements, whether it is to supply power to drive the train forward or to power the on board auxiliary systems. The inherently modular design permits straightforward adaptation to different power sources but also to the complete range of vehicle applications.
MITRAC Converter brochure
Based on mounting principles, the following three types of converters can be defined:
Modular for underframe mounting
Used for metros, commuter, regional and intercity trains but also for high floor trams and people movers.
Modular for roof mounting
Used where low-floor entry is a customer requirement: trams, metros, commuter and regional trains.
Modular for machine room mounting
This principle is applied when the vehicle design facilitates for the converters to be incorporated in the carbody, especially for double-deck trains, locomotives and high speed powerheads.
The MITRAC converters are available in the low, medium, and high power range:
| MITRAC 500 Low Power Propulsion | MITRAC 1000 Medium Power Propulsion | MITRAC 3000 High Power Propulsion |
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| Applications - Trams (LRV) - Streetcars - Trolley Busses - People Movers (APM) | Applications - Metros - Regional Trains - Intercity Trains - (Very) High Speed Trains | Applications - Electric Locomotives - Diesel Locomotives - Dual Power Locomotives - Powerheads |
MITRAC Hybrid
The Bombardier MITRAC Hybrid enables vehicles to operate efficiently on electrified tracks as well as on non-electrified tracks. This is made possible with a common propulsion chain that is capable of utilizing both electric and diesel power sources. Customer benefits include minimal use of fossil fuels, low emissions and economically optimal and flexible allocation of the fleet.
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