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All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Transport Research International Documentation (TRID) https://trid.trb.org/Images/PageHeader-wTitle.jpg https://trid.trb.org/ Dynamic Modeling and Analysis of Vehicle-Track–Bridge Coupled System for Superconducting EDS Train https://trid.trb.org/View/2511627 Thu, 10 Apr 2025 09:23:13 GMT https://trid.trb.org/View/2511627 Exploration of Split-Guideway Permanent Magnet Linear Eddy Current Brake With Improved Brake Force and Critical Speed Implemented in HTS Maglev System https://trid.trb.org/View/2394999 Thu, 22 Aug 2024 15:09:52 GMT https://trid.trb.org/View/2394999 Maglev Technology and Research Trends on Superconductivity https://trid.trb.org/View/2120641 Thu, 23 Mar 2023 10:20:43 GMT https://trid.trb.org/View/2120641 Fabrication and Characterization of High-temperature Superconducting Materials with High Magnetic Field https://trid.trb.org/View/2120639 Thu, 23 Mar 2023 10:20:42 GMT https://trid.trb.org/View/2120639 Superconducting Feeder Cable Laying and Stress Relaxation Method for Cooling https://trid.trb.org/View/1874806 Tue, 14 Dec 2021 17:50:44 GMT https://trid.trb.org/View/1874806 Study on Characteristic of High-Temperature Superconducting Linear Motor for High Speed Maglev System https://trid.trb.org/View/1728604 Fri, 28 Aug 2020 17:40:26 GMT https://trid.trb.org/View/1728604 Update on Basic Research into Superconducting Maglev and Research on Application of Maglev Technology to Conventional Railway Systems https://trid.trb.org/View/1691124 Wed, 22 Apr 2020 12:27:52 GMT https://trid.trb.org/View/1691124 Electromagnetic Characteristic Comparison of Superconducting Synchronous Motor Characteristics for Electric Aircraft Propulsion Systems https://trid.trb.org/View/1653388 98%) for their motors in comparison with current ones. To satisfy the demands, two kinds of superconducting motors are dealt in this study: one is partially superconducting motors (PSCMs), made of superconducting field coils and copper armature windings; the other is the fully superconducting motors (FSCMs) made of superconducting field/armature windings. They are cooled at 20 K with liquid hydrogen. We designed these two motors with finite element method to obtain the output density of 16-20 kW/kg for future electrified propulsion systems. We selected 3.0- and 5.0 MW superconducting motors, considering the application to aircraft for almost 180 passengers and 44 MW rated power for take-off. Also, we evaluated the motor weight using two kinds of cryostat materials: stainless steel (SUS) and fiber-reinforced plastic (FRP). The results show that the 5.0 MW PSCM using FRP achieved the output density of 16.9 kW/kg and the FSCMs with FRP of 23.5 kW/kg, respectively. The values of their output density are over three times higher than those of synchronous motors using permanent magnets, whose maximum output density value is 5 kW/kg, so far. We also evaluated the motor losses and efficiency; their results described that the efficiency of the PSCM achieved around 98%, while the 5.0 MW FSCM over 99%. The obtained data shows the superconducting motors are one of the key solutions to realize future electrified aircraft propulsion systems. ]]> Wed, 09 Oct 2019 12:26:43 GMT https://trid.trb.org/View/1653388 Analysis of the influence of magnetic stiffness on running stability in a high-speed train propelled by a superconducting linear synchronous motor https://trid.trb.org/View/1581036 Fri, 08 Feb 2019 17:00:34 GMT https://trid.trb.org/View/1581036 Recent Status of Fundamental Research on Superconducting Maglev Technology and Research on the Application of Maglev Technology to the Conventional Railway System https://trid.trb.org/View/1568734 Fri, 30 Nov 2018 17:06:49 GMT https://trid.trb.org/View/1568734 Development of Superconducting Magnetic Bearing Capable of Supporting Large Loads in Flywheel Energy Storage System for Railway Applications https://trid.trb.org/View/1568732 Fri, 30 Nov 2018 17:06:49 GMT https://trid.trb.org/View/1568732 Verification of the Reliability of a Superconducting Flywheel Energy Storage System and Its Application to the Railway System https://trid.trb.org/View/1491261 Wed, 27 Dec 2017 10:29:23 GMT https://trid.trb.org/View/1491261 Development of a Real-scale REBCO Coil for the Demonstration of a Magnetomotive Force of 700 kA https://trid.trb.org/View/1491259 Wed, 27 Dec 2017 10:29:23 GMT https://trid.trb.org/View/1491259 Research and Development Concerning Superconducting Maglev and Research on Applying Superconducting Maglev Technology to the Conventional Railway System https://trid.trb.org/View/1491256 Wed, 27 Dec 2017 10:29:23 GMT https://trid.trb.org/View/1491256 Fe-doped epitaxial YBCO films prepared by chemical solution deposition https://trid.trb.org/View/1408839 Mon, 20 Jun 2016 10:13:47 GMT https://trid.trb.org/View/1408839