Servo-Drive Amplifier for Micro-Satellite Superconductor-Levitated Flywheels

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNG04CA52C
Agency Tracking Number: 034156
Amount: $69,995.00
Phase: Phase I
Program: SBIR
Awards Year: 2004
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Barrett Technology
625 Mount Auburn St., Cambridge, MA, 02138
Duns: 620793612
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 William Townsend, PhD
 Principal Investigator
 (617) 252-9000
Business Contact
 Burt Doo
Title: Chief Operating Officer
Phone: (617) 252-9000
Research Institution
A new servo-drive technology is available to support energy storage and navigation for micro-satellites. Exploiting the ?pinning? effect of high-temperature superconductors, high-speed momentum wheels can be suspended in a stable condition that is virtually independent of speed (unlike magnetic levitation). Aside from the motor drive, this levitation system is compact and highly energy efficient. To be effective it requires a drive that is equally compact and energy efficient. It also requires extremely high servo performance with especially low torque ripple. Barrett proposes an innovation to support such a compact/efficient drive amplifier. Phase I will focus on feasibility of this approach and Phase II will support prototype design and aggressive space qualification of this unit.

* information listed above is at the time of submission.

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