High-Power-Density, Rad-hard, SiC Based, Intelligent Multi Module DC/DC Converter PMAD System For Optimal Energy Utilization

Award Information
Agency:
Department of Defense
Branch
Missile Defense Agency
Amount:
$99,996.00
Award Year:
2009
Program:
SBIR
Phase:
Phase I
Contract:
W9113M-09-C-0132
Agency Tracking Number:
B083-012-0476
Solicitation Year:
2008
Solicitation Topic Code:
MDA08-012
Solicitation Number:
2008.3
Small Business Information
Arkansas Power Electronics International
535 W. Research Center Blvd., Suite 209, Fayetteville, AR, 72701
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
121539790
Principal Investigator:
Roberto Schupbach
Chief Technology Officer
(479) 443-5759
mschupb@apei.net
Business Contact:
Sharmila Mounce
Business Operations Manager
(479) 443-5759
smounce@apei.net
Research Institution:
n/a
Abstract
Increasing power density and efficiency, reducing size and weight, and introducing standardization of electronics systems are all goals of the STSS program. The performance of Power Management and Distribution (PMAD) systems has great impact on the energy storage systems of the spacecraft or satellite. APEI, Inc proposes to develop rad-hard SiC based modular DC/DC converter PMAD systems. The modular rad-hard SiC PMAD concept will enable seamless scalability and power sharing among modules for space applications. It will also allow the electrical removal of a failed module to provide uninterrupted power. APEI’s proposed modular converter technology is also the gateway to two advanced optimal energy utilization techniques: 1) Battery run-time extension—Battery capacity decreases with increasing discharge load current. By using the modular PMADs, the current load can be distributed among different batteries (from the existing redundant systems), which increases the amount of the maximum nominal capacity utilized. 2) Maximum efficiency tracking—The efficiency of a typical converter diminishes as the power demand decreases; thus, relegating the operation of the converter to a low-efficiency point for low power demands. APEI’s proposed modular PMAD technology will dynamically tailor the number of “active/inactive” modular PMADs to the existing power demands in order to always operate at maximum efficiency.

* information listed above is at the time of submission.

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