High Efficiency Hall Thruster Discharge Power Converter

Award Information
Agency:
National Aeronautics and Space Administration
Amount:
$599,996.00
Program:
SBIR
Contract:
NNX11CA65C
Solitcitation Year:
2009
Solicitation Number:
N/A
Branch:
N/A
Award Year:
2011
Phase:
Phase II
Agency Tracking Number:
095191
Solicitation Topic Code:
S3.04
Small Business Information
Busek Co., Inc.
MA, Natick, MA, 01760-1023
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
185739591
Principal Investigator
 Thomas Jaquish
 Principal Investigator
 (508) 655-5565
 busek@busek.com
Business Contact
 Judy Budny
Title: Business Official
Phone: (508) 655-5565
Email: judy@busek.com
Research Institution
 Stub
Abstract
Busek leveraged previous, internally sponsored, high power, Hall thruster discharge converter development which allowed it to design, build, and test new printed circuit board converter within this Phase 1 effort. The new converter consists of two series or parallel boards (slices) intended to power NASA GRC HiVHAC thruster or other similarly sized EP devices. The converter accepts 80 to 160V input and generates 200 to 700V isolated output while delivering continually adjustable 300W to 3.5kW power. Busek built and demonstrated one board which achieved<94% efficiency the first time it was turned on, with projected efficiency exceeding 97% following timing software optimization. The board has a projected specific mass of 1.2kg/kW achieved thru high frequency switching.In Phase 2 we will perform the required optimization to exceed 97% efficiency and build a second prototype in a form factor more appropriate for flight. This converter will then be integrated with a set of upgraded existing boards for powering magnets and the cathode which constitute the balance of the PPU and use the traditional input voltage of 28V. The program will culminate with integrating the entire PPU and testing it on Busek thruster at Busek and on HiVHAC thruster at NASA GRC.

* information listed above is at the time of submission.

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