DEVELOPMENT OF A DC LINEAR MOTOR -- 2. RESEARCH FOR A GROUND COIL AND FIELD-MAGNET

A test facility has been constructed for the linear motor car mainly to examine its propulsion characteristies. The 3.3 ton vehicle has a 2 ton propulsion force and can be accelerated to 165 Km/h in 200 m. The DC Linear Motor (DCLM) is made up of three main components: a ground coil, a field-magnet and a flip-flop type thyristor inverter. This paper deals with the development of the ground coil and the field-magnet. The ground coil is equivalent to the armature coil of the conventional rotary motor. The fundamental construction of the ground coil is of a air-core type so as to prevent the attractive force caused by the field-magnet. It is molded into a broad with FRP. Since the field-magnet is a part of the DCLM car and straddles the ground coil, the magnetic flux of the field-magnet passes through the ground coil. In order to have a light-weight field-magnet, the ground coil must be as thin as possible. The field magnet must be designed to minimize its weight and its exciting power, given a gap length, magnetic strength and region of magnetic flux. Ordinarily, the generated heat quantity of a magnet coil is very large, so the cooling of the magnet coil is necessary. The results of test with actual models are described.

  • Supplemental Notes:
    • IEEE Power Eng Soc, Summer Meeting, Los Angeles, California, July 16-21, 1978.
  • Corporate Authors:

    Institute of Electrical and Electronics Engineers (IEEE)

    3 Park Avenue, 17th Floor
    New York, NY  United States  10016-5997
  • Authors:
    • Umemori, T
    • Hosoda, Y
    • Isasaki, M
    • Toyoshima, M
  • Publication Date: 1978

Media Info

  • Pagination: 9 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00184954
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Paper F 78 756-9 Preprint
  • Files: TRIS
  • Created Date: Jan 13 1979 12:00AM