COMPARISONS BETWEEN DESIGNS FOR SINGLE-SIDED LINEAR ELECTRIC MOTORS: HOMOPOLAR SYNCHRONOUS AND INDUCTION. PHASE III

A design study of two types of single-sided (with a passive rail) linear electric machine designs, namely homopolar linear synchronous machines (LSM's) and linear induction machines (LIM's), is described. It is assumed the machines provide tractive effort for several types of light rail vehicles and locomotives. These vehicles are wheel supported and require tractive powers ranging from 200 kW to 3735 kW and top speeds ranging from 112 km/hr to 400 km/hr. All designs are made according to specified magnetic and thermal criteria. The LSM advantages are a higher power factor, much greater restoring forces for track misalignments, and less track heating. The LIM advantages are no need to synchronize the excitation frequency precisely to vehicle speed, simpler machine construction, and a more easily anchored track structure. The relative weights of the two machine types vary with excitation frequency and speed; low frequencies and low speeds favor the LSM. The effect of variations in several LSM design parameters are shown to illustrate trends in machine dimensions, track weight, and commutating reactance. The details of the LSM design programs are described and a Fortran IV listing of the programs is provided.

• Record URL:
  https://railroads.dot.gov/elibrary/comparisons-between-designs-single-sided-linear-electric-motors-homopolar-synchronous-and
• 
• Corporate Authors:

  General Electric

  Marine Turbine & Gear Engineer, 1100 Western Ave
  Lynn, MA  United States  01910

  Federal Railroad Administration

  Office of Research and Development, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Nondahl, T A
  • Richter, E
• Publication Date: 1980-9

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; Tables;
• Pagination: 121 p.

Subject/Index Terms

• TRT Terms: Computer programs; Design; Guideways; Homopolar generators; Linear induction motors; Linear motors; Power factor (Electricity); Structural design; Synchronous motors
• Uncontrolled Terms: Design criteria
• Old TRIS Terms: Guideway design; Homopolar motors; Linear electric motor; Power factor
• Subject Areas: Design; Railroads; Terminals and Facilities;

Filing Info

• Accession Number: 00325729
• Record Type: Publication
• Report/Paper Numbers: FRA/ORD-80/54 Final Rpt.
• Contract Numbers: DOT-FR-64147
• Files: TRIS, USDOT
• Created Date: Feb 18 1981 12:00AM