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Monday5February2018, Time:10.00-12.00
Room, Ground Floor, Ed. 3/A DIETI- Via Claudio, 21 NAPOLI
Hiroyasu Kobayashi
Chiba University, Chiba, Japan,
Department ofElectrical and Electronic engineering
A Strategy for Energy Savingin DC-electrified Railway System Utilizing Energy Storage Devices
Abstract: It is commonly said that electrified railway is energy-saving transportation. This is because the running resistance of rail vehicle is low and regenerative brake can be applied. Regenerative brake is important characteristic of motors operated as a generator. By applying regenerative brake, the kinetic energy of rail vehicle can be converted to electric energy. However, in DC-electrified railway system, unidirectional substations using diode rectifier are generally utilized in power supply system to trains.Therefore, especially in DC-electrified railway system, regenerative brake is not always available because regenerative power should be consumed by powering train at the same time. If there are not any other powering train, the kinetic energy of the braking vehicle will be lost and this deteriorates energy efficiency of the system. To cope with this technical issue, many kinds of strategies have been developed. One of these strategies is to apply Energy Storage Devices (ESDs) to DC-electrified railway system. This seminar focuses on Wayside Energy Storage System (WESS), in which ESDs are introduced on the ground. Concerning to the WESS, a new control strategy proposed by our research group and comparison between the new and the conventional control strategy are introduced in this seminar.
CV: Hiroyasu Kobayashi was born in 1991. He received B.S. and M.S. degrees with the department of electrical and electronic engineering of Chiba University, Chiba, Japan, in 2014 and 2016, respectively. Now, hi is Ph.D. candidate of the department of electrical and electronic engineering of Chiba University from 2016. He also worked in National Traffic Safety and Environment Laboratory (NTSEL) as a technical staff from 2016 to 2017.His research interest is energy saving in DC-electrified railway system, which includes energy storage system on the ground or on-board and traction control of railway vehicle.
Info:Prof. Diego Iannuzzi- tel. 081 7683232–