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Vehicle, Japan

Sakamoto Y.,Electromagnetic Applications Laboratory | Kashiwagi T.,Electromagnetic Applications Laboratory | Yoneyama T.,Drive Systems Laboratory | Saga S.-I.,Drive Systems Laboratory
Quarterly Report of RTRI (Railway Technical Research Institute) | Year: 2014

Studies have been carried out on a rail brake developed by applying a linear induction motor technology, called LIM-type rail brake. This brake is capable of generating braking forces without contact. In addition, this method decreases the rise in rail temperature, and on-board supply of electric power is not required by using dynamic braking. It is however necessary to install this brake in the limited space between front and rear wheels of the bogie. A prototype rail brake system was designed and built and its electromagnetic characteristics were examined on a test track in RTRI. These investigations revealed that the LIM-type rail brake could be applicable for practical use. Source


Yamamoto T.,Drive Systems Laboratory | Hasegawa H.,Electromagnetic Applications Laboratory | Furuya T.,Drive Systems Laboratory | Ogawa K.,Drive Systems Laboratory
Quarterly Report of RTRI (Railway Technical Research Institute) (Japan) | Year: 2010

Fuel cells are currently receiving attention for their potential to clean and highly efficient power-supply systems. The authors have been developing a new type of fuel cellpowered railway vehicle to replace conventional diesel vehicles in non-electrified sections. In this work, a hybrid system using fuel cells and batteries was installed on test vehicles, which were then subjected to running tests on a test track. This paper describes the development of fuel cells and batteries hybrid test vehicles and the evaluation of this hybrid system's energy efficiency and fuel consumption rate. Source


Kondo M.,Drive Systems Laboratory | Miyabe M.,Drive Systems Laboratory | Manabe S.,Drive Systems Laboratory
Quarterly Report of RTRI (Railway Technical Research Institute) | Year: 2014

Induction motors are widely used as traction motors on trains. Because energy loss from traction motors accounts for a large portion of energy consumption in commuter trains, highly efficient traction motors are very effective in saving energy. A high efficiency induction motor was therefore developed. Its efficiency was verified through analysis and tests with a prototype machine. This paper presents the calculation results of running simulations for estimating the energy conservation effect of the high efficiency induction motor. The results indicate that the energy consumption is reduced by 6% to 11%. Source


Kondo M.,Drive Systems Laboratory | Manabe S.,Drive Systems Laboratory | Takashige T.,Drive Systems Laboratory | Kanno H.,Drive Systems Laboratory
Quarterly Report of RTRI (Railway Technical Research Institute) | Year: 2016

Traction machines are essential parts for a train to run. Therefore, a condition monitoring system (CMS) is being developed, that detects machine failure in the early stages to prevent traffic disruption. The CMS observes the vibrations of a machine and detects abnormal vibrations with a machine learning algorithm. In the CMS, octave-band analysis is performed to extract feature vectors from vibration data. Running tests were conducted to verify the performance of the CMS. Test results showed that simulated abnormal vibrations were clearly distinguishable from normal ones with the CMS. © 2016, Ken-yusha Inc. All rights reserved. Source

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