In the UK as in most other countries, there is a general trend toward the electrification of railways. One of the attractions is the natural ability of electric drives to recirculate braking energy back into the network. However there are many routes that will remain diesel-powered well into the future.
In a project supported by the Technology Strategy Board (TSB), Artemis and its partners Ricardo and Bombardier are developing a system that can be retrofitted to diesel multiple unit (DMU) vehicles and that uses an advanced flywheel unit to store and then recirculate braking energy.
The July 2014 edition of the The Rail Engineer contains an article by David Shires which describes this project.
We are grateful to Rail Media for allowing us to re-publish this article – which you can see by clicking here.