High Energy Cryogenic Varistors

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: N/A
Agency Tracking Number: 18175
Amount: $73,536.00
Phase: Phase I
Program: SBIR
Awards Year: 1992
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
19 Kearney Road, Needham, MA, 02194
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 V J Hruby
 (617) 449-3929
Business Contact
Phone: () -
Research Institution
N/A
Abstract
High energy (>1kJ/cc) varistors operating at cryogenic temperatures (<77 degrees Kelvin) are being developed at Busek. Power generation, distribution and energy storage at cryogenic temperature is more efficient and requires less massive systems than the room temperature equivalents. These systems, as well as superconducting coils/magnets, require surge/discharge protection devices capable of operating at the same temperatures. Additionally, low voltage cryovaristors may be the enabling technology for protection of high temperature superconductors (HTS) which, when mature, will be used in all electrical systems. Continuous (DC) power dissipation of 2 kW/cc at room temperature was already demonstrated. Development of varistors with higher DC and pulse ratings is currently proceeding via the use of novel ingredients and material processing.

* Information listed above is at the time of submission. *

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