Accession Number : ADA119424

Title :   Liquid Cooled Variable Speed Constant Frequency (VSCF) Converter Device Development.

Descriptive Note : Final rept. Sep 78-Dec 81,

Corporate Author : GENERAL ELECTRIC CO BINGHAMTON NY ARMAMENT AND ELECTRICAL SYSTEMS DEPT

Personal Author(s) : Butler,John W

PDF Url : ADA119424

Report Date : Jun 1982

Pagination or Media Count : 160

Abstract : Further miniaturization of high-power semi-conductor devices utilizing silicon disks larger than 12 mm. requires major innovations to improve the average thermal impedance and surge capability. The high thermal impedance in existing discrete devices is caused mostly by the dry interfaces necessary to provide stress relief. This report presents a unique approach to solving the dry interface problem. It describes the design, fabrication and evaluation of a smaller, lighter, electrically isolated dual thyristor module featuring structured copper, solder bonding, polyimide passivation, direct bonded copper on beryllium oxide and a hermetic sealed aluminum case. Details of the SCR modules evaluation in a 60 KVA single channel VSCF electrical generating system are included. (Author)

Descriptors :   *Semiconductor devices, *Disks, *Silicon, *Frequency converters, Liquid cooling, Drying, Miniaturization, High power, Electric generators, Thermal conductivity, Copper, Bonded joints, Beryllium oxides, Polyimide resins, Variable speed drives

Subject Categories : Electrical and Electronic Equipment
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE