Cyrogenic System Stability

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: N/A
Agency Tracking Number: 41135
Amount: $64,601.00
Phase: Phase I
Program: SBIR
Awards Year: 1998
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
3016 Covington St., West Lafayette, IN, 47906
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Steven F. Glover
 (765) 494-3434
Business Contact
Phone: () -
Research Institution
N/A
Abstract
Cryogenic components are being proposed for a ground-transportable radar (GTR) systems. Incorporating low-loss components into power-electronic based systems is a concern from the standpoint of system stability due to the inherent low resistance of the cryogenic components which may tend to destabilize the system due to reduced damping. The purpose of the work proposed herein is first to investigate the stability of this type of GTR system. This is to be accomplished by first defining a baseline GRT system configuration and then determining the parameters, and the variation thereof, in order to approximate the operating characteristics of the proposed cryogenic GTR. The overall goal, however, is to conduct a first-look into optimizing performance, weight, and cost of a GTR system in regard to system stability. Optimization studies will focus first on small-disturbance stability and then on large-excursion stability with a pulsed load present. During this research, a new and innovative means of eliminating negative- impedance instability, which has recently been shown to be effective on a noncryogenic power- electronic based system, will be considered as a means of reducing the weight requirements by decreasing the number and size of the system capacitors for a low-loss GTR system. The possible use of this stabilizer control in a pulsed-load environment has not been investigated. Moreover, the possible interaction of the various system controllers, including the stabilizer control, will be investigated with a focus on achieving optimum system performance through appropriate coordination or modification of the system controllers.

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

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