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Track tests: Batteries will be fitted in a Greater Anglia Class 379
Network Rail is developing a battery-powered train to operate on parts of the network that have no overhead wires.
A collaborative project with Derby-based train-maker Bombardier will see a Greater Anglia Class 379 used as a test-bed and fitted with two different forms of batteries: lithium (iron magnesium) phosphate and hot sodium nickel salt. The batteries will undergo extensive lab tests before being fitted to the train.
The modified 379 will undergo a variety of tests ‘off network’, including runs at the Old Dalby test track in Leicestershire. Should those tests prove successful, the train will run on an electrified branch line on the Anglia route with its pantograph down. If there are any problems, the train can raise its pantograph, and collect power again. This running will be both in and out of passenger service.
The development of independently powered electric multiple units (IPEMUs) could see trains running on battery power over non-electrified lines, before charging at terminal stations, or using their batteries to run over diesel lines in otherwise electrified parts of the railway.
Network Rail said that electric trains were quicker, quieter, and more efficient than their diesel counterparts, and that the development of battery technology would spread those benefits while not having to put up miles of wiring. Richard Eccles, Network Rail’s director of network strategy, said: “We see this project as an important element of our strategy of increasing electrification.
“If we can create an energy storage capability for trains, electric traction can be introduced to more parts of the network without the need to necessarily extend the electrification infrastructure.
“As the principal funder and delivery manager, we have done a great deal of feasibility work, to define the outputs we seek from the trial and to build confidence in the project across the industry. We are working with our partners to drive this innovation forward.” Funding is coming from Network Rail, the Enabling Innovation Team (hosted by the Rail Safety and Standards Board) and the Department for Transport.
David Clarke, director of the Enabling Innovation Team, said: “Energy storage on trains is a typical example of a development that’s good for passengers, taxpayers and the long-term future of the railway but where it is difficult for individual businesses to make the business case to invest in the technology.
“To help prove the business case we are funding up to 30% of the technology demonstration.
“We see the IPEMU project as a good example of something that will work according to the R&D but no one will invest in it without seeing a full-scale demonstrator.”