500 KW D.C. AT LESS THAN FOUR POUNDS PER KW

Teledyne-Inet of Gardena, California has recently developed a D-C generator standing only 28 inches high. This gas turbine generator looks like a 100 kw unit, however, it can develop 500 kw at 33,000 rpm. Weighing less than 2,000 lb and occupying a volume of less than 90 cu ft, it could have wide applications in light-weight, high-speed vessels, on offshore oil rigs, as a portable emergency generator and a variety of other mobile applications. The heart of the machine is the generator rotor machined from a single billet of alloy steel. The design, based on the homopolar principle, is quite new, and apparently singularly successful. Ironically, the homopolar generator is one of the earliest known, invented in 1893. The turbine is a United Aircraft of Canada ST6L-77, mounted on a single axis with the generator and a splined shaft connecting the two elements solidly. There is no gear box or other speed reducing device, this alone accounting for part of the savings in size and weight. When constant D-C power is applied to the excitation coil, the steel rotor becomes an electromagnet with a north pole at one end and a south pole at the other. As it rotates, it generates A-C power of 1100 Hz 12 phase, which is then rectified into D-C by twelve solid-state diodes mounted on the periphery of the casing. Other solid-state circuits regulate the voltage to within plus or minus 1 percent of the nominal value of 600 volts D.C. The capacity of the generator set is established by the power of the gas turbine, which in turn is affected by the atmospheric pressure and temperature. For a given kw output, the fuel consumption increases as the temperature rises. The fuel rate at 60 F according to the published curves, is 0.91 lb per kw-hr.

  • Availability:
  • Corporate Authors:

    Simmons-Boardman Publishing Corporation

    P.O. Box 530
    Bristol, CT  USA  06010
  • Publication Date: 1973-7

Media Info

  • Pagination: 46 p.
  • Serial:
    • Marine Engineering/Log
    • Volume: 77
    • Issue Number: 8
    • Publisher: New York: Simmons-Boardman Publishing Corp.
    • ISSN: 0732-5460

Subject/Index Terms

Filing Info

  • Accession Number: 00047668
  • Record Type: Publication
  • Source Agency: Marine Engineering/Log
  • Files: TRIS
  • Created Date: Oct 31 1973 12:00AM