SELF-COMMUTATED RECTIFIER TO IMPROVE LINE CONDITIONS

When thyristor rectifiers are used for electric drives, reactive power is produced with fundamental and harmonic frequencies. Especially in single-phase traction lines, with their low short-circuit power, a technical solution of this problem, applicable mainly to thyristor-driven rail cars and locomotives, had to be found. In this paper, the sector-control system of a self-commutated unsymmetrical bridge is described. In the unsymmetrical half-controlled bridge connection, the two thyristors can be quenched by adding a self-commutating device. This attachment (supplement) can be applied to the single bridge or to two bridges in series (sector control). By using this self-commutating attachment, it is possible to shift the fundamental of the current to a leading angle with respect to the voltage.

• Corporate Authors:

  Institution of Electrical Engineers

  Savoy Place
  London WC2R 0BL, NY  England  10016-5997
• Authors:
  • Zander, H
• Conference:
  • Institution of Electrical Engineers, Proceedings
• Publication Date: 1973-9

Media Info

• Serial:
  • Volume: 120
  • Issue Number: 9

Subject/Index Terms

• TRT Terms: Communications; Electric locomotives; Electric power conditioning; Locomotives; Propulsion; Railroad electrification; Rapid transit; Signaling; Technology; Thyristors; Vehicle power plants
• Geographic Terms: Germany
• Old TRIS Terms: Propulsion controls; Thyristor control
• Subject Areas: Public Transportation; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00056814
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Jul 31 1981 12:00AM