COMPARISON OF EXPERIMENTAL AND THEORETICAL REACTION RAIL CURRENTS, RAIL VOLTAGES, AND AIRGAP FIELDS FOR THE LINEAR INDUCTION MOTOR RESEARCH VEHICLE

Measurements of reaction rail currents, reaction rail voltages, and airgap magnetic fields in tests of the Linear Induction Motor Research Vehicle (LIMRV) were compared with theoretical calculations from the mesh/matrix theory. It was found that the rail currents and magnetic fields predicted by the theory are within 20 percent of the measured currents and fields at most motor locations in most of the runs, but differ by as much as a factor of two in some cases. The most consistent difference is a higher experimental than theoretical magnetic field near the entrance of the motor, and a lower experimental than theoretical magnetic field near the exit. The observed differences between the theoretical and experimental magnetic fields and currents do not account for the differences of as much as 26 percent between the theoretical and experimental thrusts. (Color illustrations reproduced in black and white)

• Corporate Authors:

  Jet Propulsion Laboratory

  California Institute of Technology, 4800 Oak Grove Drive
  Pasadena, CA  United States  91103

  National Aeronautics and Space Administration

  600 Independence Avenue, SW
  Washington, DC  United States  20546

  Federal Railroad Administration

  Office of Research and Development, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Elliott, D G
• Publication Date: 1977-7

Media Info

• Pagination: 84 p.

Subject/Index Terms

• TRT Terms: Electric current; Electric power; Electric railroads; Electrical systems; Electromagnetic fields; High speed ground transportation; Induction motors; Intelligent transportation systems; Linear induction motors; Linear motors; Measurement; Propulsion; Rapid transit; Reaction rails
• Old TRIS Terms: Advanced systems; Electrical potential; Linear electric motor; Rapid transit railroads
• Subject Areas: Operations and Traffic Management; Public Transportation; Railroads;

Filing Info

• Accession Number: 00168985
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FRA/ORD-77/33 Final Rpt., 77-36
• Contract Numbers: NAS7-100
• Files: NTIS, TRIS, USDOT
• Created Date: Jan 30 1982 12:00AM