THYRISTOR PROTOTYPE WILL DEMONSTRATE BETTER ADHESION CHARACTERISTICS

A prototype 25 kV 50 Hz electric locomotive is serving to test thyristor control on British Railways. Until now all BR ac electric motive power has used tap changers to regulate motor current. Better use of adhesion because tractive effort peaks caused by notching up are eliminated--plus the rapid response of solid state circuits to wheelslip detection--are the principal adbantages claimed for thyristors. Maintenance requirements are also reduced. Against these must be set possible harmonic interference with signalling and telecommunications circuits. Preliminary trials showed that electrical interference effects are likely to be within acceptable limits.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03735346
• Corporate Authors:

  IPC Transport Press, Limited

  Dorset House, Stamford Street
  London SE1 9LU,   England 
• Publication Date: 1975-8

Media Info

• Features: Figures;
• Pagination: p. 301-303
• Serial:
  • Railway Gazette International
  • Volume: 131
  • Issue Number: 8
  • Publisher: DVV Media Group
  • ISSN: 0373-5346
  • Serial URL: http://www.railwaygazette.com/about-us.html

Subject/Index Terms

• TRT Terms: Adhesion; Electric locomotives; Electric power conditioning; Interference; Locomotives; Solid state devices; Tests; Traction; Vehicle design; Wheel slip
• Identifier Terms: British Rail
• Uncontrolled Terms: Propulsion systems
• Old TRIS Terms: Locomotive design; Solid state; Traction tests
• Subject Areas: Design; Railroads;

Filing Info

• Accession Number: 00126437
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 5 1975 12:00AM