Author(s)

S. Sone, T. Suzuki & T. Koseki

Abstract

Train scheduling and energy saving with pure electric braking and semi-automatic train operation S. Sone\ T. Suzuki^ & T. Koseki ^ *Kogakuin University, Shinjuku-ku, Japan University of Tokyo, Japan Abstract Distributed traction systems have been more and more popular since ac motor traction was introduced practically. One of the advantages of distributed traction system is much easier maintenance work of friction braking apparatus, and this proposal brings almost no wear of braking pads. Pure electric braking can be realised by really four quadrant traction system. Smooth and accurate movement like that of a passenger lift can be realised with mechanical brake used only for keeping standstill as in the case of a lift. Possible improvements are shorter braking time and distance, better riding comfort, more precise stopping position and less energy consumption. All of these are not always realised simultaneously and if it is used in a wrong way adverse effects such as longe

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