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Magnetic Damping Characteristics of the Superconducting Magnetic Levitation

Research Project

Project/Area Number 06650320
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 電力工学・電気機器工学
Research InstitutionThe University of Tokyo

Principal Investigator

OHSAKI Hiroyuki  Univ.of Tokyo, Dept.of Elec.Eng., Assoc.Prof., 大学院・工学系研究科, 助教授 (10203754)

Co-Investigator(Kenkyū-buntansha) TAMURA Minoru  Univ.of Tokyo, Dept.of Elec.Eng.Assistant, 大学院・工学系研究科, 助手 (00011180)
MASADA Eisuke  Univ.of Tokyo, Dept.of Elec.Eng.Professor, 大学院・工学系研究科, 教授 (40010706)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1995: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1994: ¥1,700,000 (Direct Cost: ¥1,700,000)
Keywordssuperconductivity / magnetic levitation / electromagnetic induction / damping / simulation / running characteristics / active damper / passive damper
Research Abstract

To investigate magnetic damping characteristics of the superconducting EDS (Electrodynamic suspension) magnetically levitated system and their influence on running performance and riding comfort, we have analyzed damping characteristics of the most essential levitation system structure, the feasibility of a passive and an active damper for the improvement of damping characteristics and their performance, and in addition we have made running simulations with a bogie model.
1.Running simulation : Numerical simulation of six-degree-of-freedom motion of the superconducting magnetically levitated bogie was carried out using analysis programs we have been developing to study running characteristics under various conditions : running along a straight and a curved section, multi-bogie models, superconducting coil quench, etc. The results show us the bogie motion in detail, in particular, the importance of the rotational motion of the bogie when full characteristics are considered, and how mechanical dampers influence it.
2.Damping mechanism : To clarify the damping mechanism in detail only vertical motion of the bogie was considered and analyzed on the basis of an energy balance. The dependence of the damping characteristic on the electromagnetic force, induced current, coil resistance and inductance was demonstrated.
3.Passive damper : To improve the damping characteristics electromagnetically the installation of short-circuited coils in the vehicle was considered and the influence of the coil position and size was analyzed.
4.Active damper : An active damper, where the damper coil current is controlled actively was investigated, The results show that it can improve the damping more effectively than a passive coil. The shape, the size and position of active damper coils were proposed.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] S.Ohashi: "Study on Damping Characteristics of the Superconductive Magnetically Levitated System" Advances in Superconductivity. 7. 1263-1266 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Higashi: "Mechanism of Magnetic Damping in the Superconducting Magnetic Levitation System" Proc.Of the 1^<st> Int.Symp.On Linear Drive for Industry Applications. 131-135 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Ohashi: "Unstable Rotation Motion of the Superconductive Magnetically Levitated Bogie" Proc.Of Int.Power Electronics Conference 1995. 1. 551-556 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Ohashi: "Running Simulation of the Superconductive Magnetically Levitated System" Proc.6^<th> European Conf.on Power Electronics and Applications. 3. 650-655 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Ohashi: "Influence of Mechanical and Electromagnetic Disturbance on the Running Characteristics of the Superconducting Maglev System" Proc.14^<th> Int.Conf.On Magnetically Levitated Systems. 467-472 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Ohashi, et al.: ""Study on Damping Characteristics of the Superconductive Magnetically Levitated System"" Advances in Superconductivity. VII. 1263-1266 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Higashi, et al.: ""Mechanism of Magnetic Damping in the Superconducting Magnetic Levitation System"" Proc.Of the 1^<st> Int.Symp.On Linear Drive for Industry Applications. 131-135 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Ohashi, et al.: ""Unstable Rotation Motion of the Superconductive Magnetically Levitated Bogie"" Proc.Of Int.Power Electronics Conf.1995. Vol.1. 551-556 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Ohashi, et al.: ""Running Simulation of the Superconductive Magnetically Levitated System"" Proc.6^<th> European Conf.on Power Electronics and Applications. Vol.3. 650-655 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Ohashi, et al.: ""Influence of Mechanical and Electromagnetic Disturbance on the Running Characteristics of the Superconducting Maglev System"" Proc.14^<th> Int.Conf.On Magnetically Levitated Systems. 467-472 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Ohashi,K.Higashi,H.Ohsaki,E.Masada: ""Study on Damping Characteristics of the Superconductive Magnetically Levitated System"" Advances in Superconductivity VII. Vol.2. 1263-1266 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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