ABB helps develop universal train

has supplied transformer technology to make possible the world’s first universal train - developed by Bombardier - that can run without stopping on diesel, AC and DC power supplies.

Bombardier’s AGC XBiBi (bi-mode and dual voltage) train can switch effortlessly and efficiently between the different power sources using ABB’s roof-mounted traction transformer.

Previously the traction transformer, which powers the train with AC power, and the diesel engine were mutually exclusive because they occupied the same position in the train. ABB solved the impasse by developing a traction transformer that could be installed on the roof of the train, thereby freeing up space inside for the diesel engine.

Crucially, the roof-mounted traction transformer has no impact on the speed, acceleration, performance or seating capacity of the train itself.

The AGC XBiBi was developed for the French national rail operator SNCF, whose extensive network in 21 regions uses all three power alternatives.