THYRISTOR (SCR) CHOPPER CONTROL SYSTEM FOR TRANSPORTATION EQUIPMENT

Circuit design. Series field d-c traction motor control, providing smooth tractive effort control motoring and in dynamic braking of 500 to 1,000 hp (continuously rated) rapid transit car drives, especially in the Chicago Transit Authority System is described. The thyristors are switched by a feedback current control system utilizing a fixed-frequency variable pulse-width technique. Armature series reactors and line filter requirements are minimized by a multistage scheme. Both armature and field currents are modulated for full speed range control. Third rail system extreme voltage transients are accommodated by system features.

  • Corporate Authors:

    Institute of Electrical and Electronics Engineers

    3 Park Avenue, 17th Floor
    New York, NY  USA  10016-5997
  • Authors:
    • Zeccola, R A
    • Weiser, E F
  • Publication Date: 1969-7

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00037162
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Paper TP-12-IGA
  • Files: TRIS
  • Created Date: Oct 13 1973 12:00AM