Technology for energy-saving railway operation through power-limiting brakes - A case study at an urban railway

Takafumi Koseki, Shoichiro Watanabe, Yasuhiro Hamazaki, Keiichiro Kondo, Tomonori Hasegawa, Takeshi Mizuma

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

An appropriate driver-assistance in order to use regenerative braking effectively is significant as a feasible method of a smart power management for energy-saving and economical solutions in sustainable electric railway operation. It is substantially significant to suppress braking force in high speed so that the braking force is less than corresponding traction force in the field-weakening speed region so that the whole braking force can be supplied by the regenerative electric brakes without active use of ordinary mechanical brakes. This power limitation in high speed is also beneficial to reduce the probability of regenerative braking cancellation caused by occasional high voltage at pantographs. If one limit the braking force, the total traveling time is increased, but this supplemental running time is relatively small, when the limitation of the deceleration is only applied in high speed and this supplemental time can be absorbed in realistic time margin, which is the difference of the initially scheduled conservative running time and actual one. Authors propose this type of the fully used electric braking pattern as 'constant-power braking'or 'power-limiting braking'and for realistic application to existing rolling stocks, they also propose a minor variation called as discrete approximate constant-power electric braking. The train driver must start braking operation considerably earlier than conventional ordinary train operation, and the braking force must be precisely controlled depending on the actual train speed timely. Since this driving method is, therefore, inherently more complicated than conventional one, a smart onboard driver-assistance or automatic train stopping control is requested for the realization.

本文言語English
ホスト出版物のタイトル2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014
出版社IEEE Computer Society
ページ2126-2132
ページ数7
ISBN(印刷版)9781479927050
DOI
出版ステータスPublished - 2014 1 1
外部発表はい
イベント7th International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014 - Hiroshima, Japan
継続期間: 2014 5 182014 5 21

出版物シリーズ

名前2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014

Other

Other7th International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014
国/地域Japan
CityHiroshima
Period14/5/1814/5/21

ASJC Scopus subject areas

  • 電子工学および電気工学

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