Decentralized Nonlinear Controller Based SiC Parallel DC-DC Converter

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNC05CA55C
Agency Tracking Number: 041332
Amount: $69,982.00
Phase: Phase I
Program: SBIR
Awards Year: 2005
Solicitation Year: 2004
Solicitation Topic Code: X2.05
Solicitation Number: N/A
Small Business Information
201 Research Blvd., Starkville, MS, 39759-7704
DUNS: 622392111
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Jeffrey Casady
 Principal Investigator
 (662) 324-7607
 jeff.casady@semisouth.com
Business Contact
 Jeffrey Casady
Title: President & CTO
Phone: (662) 324-7607
Email: jeff.casady@semisouth.com
Research Institution
N/A
Abstract
This proposal is aimed at demonstrating the feasibility of a Decentralized Control based SiC Parallel DC-DC Converter Unit (DDCU) with targeted application for NASA's International Space Station Program and Satellite Power Systems. The proposed DDCU has three key features: a) "true" redundancy for parallel DC-DC converter based on a novel concept developed at the University of Illinois at Chicago, b) a novel nonlinear hybrid controller that achieves enhanced robustness and wider stability margin and yet achieves interleaving to reduce output current ripple, and c) SiC based power stage yielding higher breakdown voltage, temperature-sustenance, and radiation-hardness capabilities for the DDCU leading also to higher power density as compared with Si based power stage.

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

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