ECONOMIC FACTORS GOVERNING THE SPECIFICATION AND SELECTION OF ELECTRICAL EQUIPMENT FOR LARGE REVERSING DRIVES IN ROLLING MILLS

This paper deals with the application of thyristor convertors and d.c. motors to large reversing drives for rolling mills. In the case of the motors such factors as voltage, thermal utilization of the insulation class, overload capability, load requirements and their effect on motor costs, moment of inertia, torque amplification and ventilation must be taken into account. Factors governing the dimensioning of thyristor convertors and their protection are discussed with regard to the reliability. Thyristor convertors generate harmonics and consume reactive power. The use of 12-pulse convertors to reduce harmonics and thyristor-controlled capacitor banks to improve the power factor are discussed. A comparison is made of double convertors using a blocking system and those having a circulating current system.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00012459
• Supplemental Notes:
  • First published in IEE Conference Publication #93, pp 102-106, London, 1972.
• Corporate Authors:

  Allmanna Svenska Elektriska Aktiebolaget

  S-72183 Vasteras,   Sweden 
• Authors:
  • Krishnan, L B
• Publication Date: 1973

Media Info

• Pagination: p. 85-89
• Serial:
  • Asea Journal
  • Volume: 46
  • Issue Number: 4
  • ISSN: 0001-2459

Subject/Index Terms

• TRT Terms: Electric power; Electrical systems; Motors; Propulsion
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 00050801
• Record Type: Publication
• Source Agency: ASEA Journal
• Files: TRIS
• Created Date: Jan 24 2003 12:00AM