DESIGN STUDY FOR THE RETROFITTING OF FLYWHEEL UNITS (ESU'S) UNDER THE CARBODY OF EXISTING COMMUTER TRAIN SETS
Netherlands Railways Ltd investigates energy recuperation, storage and re-use on board of electric commuter train sets. The EC Research Contract Nr. EE/E3/441/NL concerns the design of both the suspension system for the flywheel equipment and the improved streamlining of the car bodies. Two different types of energy storage flywheel units are being developed on the basis of both conventional and advanced techniques. A reduction of dimensions, weight and internal losses is being pursued by an integrated design of the electric machine and the flywheel mass. The flywheel units will be mounted under the coach of a commuter train set. The load on the bearings of the flywheel units can be limited by the use of a cardanic suspension. In order to increase the benefit of this energy storage system design studies for a refined streamlining of the train sets have been carried out. By the development of a retractable central automatic coupler, which required an extensive design effort, the streamlining of the front ends has been improved considerably. The adaptations described result in an energy saving up to 25%; 308.000 kWh per train set each year. Although the economic prospects thus far seem unpromising mainly as a result of the high conversion costs of the streamlining, the investigations into flywheel techniques will be continued, because the availability of cheap energy can not be taken to be guaranteed for the near, or the distant future.
Bibliographic Reference: EUR 10911 EN (1986) MF, 14 P., BFR 150, BLOW-UP COPY BFR 200, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989125042300 / Last updated on: 1987-07-01
Available languages: en