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Study on High-Efficiency Linear Induction Motor for Transit

Research Project

Project/Area Number 15360150
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 電力工学・電気機器工学
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

FUJII Nobuo  KYUSHU UNIVERSITY, Faculty of Information Science and Electrical Engineering, Associate Professor, 大学院・システム情報科学研究院, 助教授 (60101177)

Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥11,500,000 (Direct Cost: ¥11,500,000)
Fiscal Year 2005: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 2004: ¥5,400,000 (Direct Cost: ¥5,400,000)
Fiscal Year 2003: ¥3,300,000 (Direct Cost: ¥3,300,000)
KeywordsLinear Motor / Linear Induction Motor / LIM / Efficiency / End Effect Compensation / Transportation / Urban Transit / Subway Train
Research Abstract

1.Use of linear induction motor with end-effect compensator
When the primary member of linear induction motor is restricted to the present length, the only means to solve the problem left for higher efficiency is to compensate the end-effect. It will be the most effective method to use the magnet rotator type of end-effect compensator. The effect and the technique to use are as follow:
(1)The overall efficiency of linear motor with the compensator increases by 5% at least and increases to the value of 76%. The overall thrust increases by about 40%. That is, the linear motor with higher-efficiency and high-density thrust can be realized.
(2)The two-pole compensator, whose diameter is half and the volume is one forth as compared to the four-pole compensator, has almost the same effect for the compensation. The two-pole compensator can be equipped in the space of 0.2m in front of the primary core of linear motor with the length of 2.5m.
(3)In making the magnet pole of compensator formed with plural permanent magnets, the whole of pole should be magnetized in lump sum not to decrease the proper characteristics.
2.Use of linear induction motor with long primary member
(1)In the conditions that the air gap is 12mm for the safety and the width of secondary conductor is limited to 400mm, the pole pitch is saturated to about 400-500mm though the longer pole pitch increases the efficiency.
(2)Large number of poles realize the small operating slip for higher efficiency. The minimum operating slip will be about 0.07 at the schedule speed of 40km/h taking into consideration of the power factor. To obtain the efficiency of 80%, the linear motor with twenty poles and the primary length of 6m is necessary.

Report

(4 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (24 results)

All 2005 2004 2003 Other

All Journal Article (20 results) Publications (4 results)

  • [Journal Article] Estimation of Overall Efficiency of Linear Induction Motor with Magnet Rotator Type of End-Effect Compensator2005

    • Author(s)
      N.Fujii, Y.Ito, T.Yoshihara
    • Journal Title

      Proc. of XII Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering (IOS Press)

      Pages: 19-24

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Characteristics of Moving Magnet Rotator over Conducting Plate2005

    • Author(s)
      N.Fujii, Y.Ito, T.Yoshihara
    • Journal Title

      IEEE Transactions on Magnetics 41・10

      Pages: 3811-3813

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Estimation of Overall Efficiency of Linear Induction Motor with Magnet Rotator Type of End-Effect Compensator2005

    • Author(s)
      N.Fujii, Y.Ito, T.Yoshihara
    • Journal Title

      Proc.of XII Electromagnetic fields in Mechatronics, Electrical and Electronic Engineering (IOS Press)

      Pages: 19-24

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Characteristics of Moving Magnet Rotator over Conducting Plate2005

    • Author(s)
      N.Fujii, Y.Ito, T.Yoshihara
    • Journal Title

      IEEE Transactions on Magnetics 41

      Pages: 3811-3813

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Characteristics of Moving Magnet Rotator over Conducting Plate2005

    • Author(s)
      N.Fujii, Y.Ito, T.Yoshihara
    • Journal Title

      Proc.of The 2005 IEEE International Magnetics Conference

      Pages: 325-325

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Estimation of Overall Efficiency of Linear Induction Motor with Magnet Rotator Type of End-Effect Compensator2005

    • Author(s)
      N.Fujii, Y.Ito, T.Yoshihara
    • Journal Title

      Proc.of XII Int.Sympo.on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering

      Pages: 19-24

    • Related Report
      2005 Annual Research Report
  • [Journal Article] On Winding Method of Wound Type Linear Induction Motor for Transit2005

    • Author(s)
      N.Fujii, T.Mizuma
    • Journal Title

      Proc.of XII Int.Sympo.on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering

      Pages: 163-168

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Characteristics of Linear Induction Motor with Magnet Rotator Type of Compensator2005

    • Author(s)
      N.Fujii, Y.Ito, T.Yoshihara
    • Journal Title

      Proc.of The 5th Int.Sympo.on Linear Drives for Industry Applications

      Pages: 351-354

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Methods for Improving Efficiency of Linear Induction Motor for Urdan Transit2004

    • Author(s)
      N.Fujii, T.Hoshi, Y.Tanabe
    • Journal Title

      JSME International Journal 47・2

      Pages: 512-517

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Essential Methods to Reduce Power Consumption for Traction Linear Induction Motor2004

    • Author(s)
      N.Fujii, Y.Tanabe, Y.Ito
    • Journal Title

      Proc. of International Symposium on Power Electronics, Electrical Drives, Automation and Motion

      Pages: 408-413

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Overall Characteristics of Traction Linear Induction Motor with New End-effect Compenstor2004

    • Author(s)
      N.Fujii, Y.Tanabe, Y.Ito
    • Journal Title

      Proc. of 16th International Symposium on Electrical Machines (Journal of Electrical Engineering in Transportation)

      Pages: 510-515

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Methods for Improving Efficiency of Linear Induction Motor for Urban Transit2004

    • Author(s)
      N.Fujii, T.Hoshi, Y.Tanabe
    • Journal Title

      JSME International Journal 47

      Pages: 512-517

    • NAID

      110004820769

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Essential Methods to Reduce Power Consumption for Traction Linear Induction Motor2004

    • Author(s)
      N.Fujii, Y.Tanabe, Y.Ito
    • Journal Title

      Proc.of International Symposium on Power Electronics, Electrical Drives, Automation and Motion

      Pages: 408-413

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Overall Characteristics of Traction Linear Induction Motor with New End-effect Compensator2004

    • Author(s)
      N.Fujii, Y.Tanabe, Y.Ito
    • Journal Title

      Proc.of 16th International Symposium on Electrical Machines

      Pages: 510-515

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Methods for Improving Efficiency of Linear Induction Motor for Urban Transit2004

    • Author(s)
      N.Fujii, T.Hoshi, Y.Tanabe
    • Journal Title

      JSME International Journal 47・2

      Pages: 512-517

    • NAID

      110004820769

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Essential Methods to Reduce Power Consumption for Traction Linear Induction Motor2004

    • Author(s)
      N.Fujii, Y.Tanabe, Y.Ito
    • Journal Title

      Proc.of Int.Sympo.on Power Eletronics, Eletrical Drives, Automation and Motion

      Pages: 408-413

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Basic Analytical Study on On-board Wound-Secondary Type of Linear Induction Motor for Light Transit2004

    • Author(s)
      N.Fujii, T.Mizuma
    • Journal Title

      Proc.of 16th Int.Conference on Electrical Machines

      Pages: 504-509

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Overall Characteristics of Traction Linear Induction Motor with New End-effect Compensator2004

    • Author(s)
      N.Fujii, Y.Tanabe, Y.Ito
    • Journal Title

      Proc.of 16th Int.Conference on Electrical Machines

      Pages: 510-515

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A Compensation Method for the End Effect of a Linear Induction Motor2003

    • Author(s)
      N.Fujii, T.Harada, Y.Sakamoto, T.Kayasuga
    • Journal Title

      Electrical Engineering in Japan 143・3

      Pages: 58-67

    • NAID

      210000160609

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] A Compensation Method for the End Effect of a Linear Induction Motor2003

    • Author(s)
      N.Fujii, T.Harada, Y.Sakamoto, T.Kayasuga
    • Journal Title

      Electrical Engineering in Japan 143

      Pages: 58-67

    • NAID

      210000160609

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Publications] N.Fujii, T.Hoshi, Y.Tanabe: "Methods for Improving Efficiency of Linear Induction Motor for Urban Transit"JSME International Journal. 47・2(掲載予定). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] N.Fujii: "Characteristics of Linear Induction Motor With Onboard Long Armature Core for Transit"Proc. of The 4th Int. Sympo. on Linear Drives for Industry Applications. 231-234 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] N.Fujii, T.Hoshi, Y.Tanabe: "Characteristics of Two Types of End Effect Compensators for Linear Induction Motor"Proc. of The 4th Int. Sympo. on Linear Drives for Industry Applications. 73-76 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] N.Fujii, T.Hoshi, Y.Tanabe: "Methods for Improving Efficiency of Linear Induction Motor for Urban Transist"Proc. of Int. Sympo. on Speed-up and Service Technology for Railway and Maglev Systems. 583-588 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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