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Three Phase Resonant DC Power Converter for Ion Thrusters

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2005 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Colorado Power Electronics, Inc.
CO Fort Collins, CO 80524-4731
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2005
Title: Three Phase Resonant DC Power Converter for Ion Thrusters
Agency: NASA
Contract: NNC05CA18C
Award Amount: $599,986.00


Our phase 1 study has revealed many significant benefits of a new class of DC-to-DC power converters with performance that cannot be matched by current flight power systems. The goal of low stored energy has been demonstrated while producing a record-breaking efficiency of 95.5%. This new converter claims this remarkable accomplishment not at just one full power point but at two distinct points. The converter was able to delivery its full rated power of 1kW at 2850V and 5000V load voltages without any physical adjusts. This new converter demonstrated low arc energy and rapid recovery response while powering NEXIS like sub-scale ion optics at Colorado State University. The 1kW prototype's stored energy was less than 1.9mj at 5000Voutput and less than 700?j at 2850V output. In phase 2 we will integrate this new technology into a computerized ion thruster test system capable of delivering 24kW screen power. The planned test system will serve to gain confidence with the new topology and to initiate power system designers to an exciting new technology.

Principal Investigator:

Geoff Drummond
Principal Investigator

Business Contact:

Geoffrey N. Drummond
Small Business Information at Submission:

Colorado Power Electronics, Inc.
200 Commerce, Unit F Fort Collins, CO 80524

EIN/Tax ID: 841352626
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No