Energy Harvesting (EH) for Small Air Vehicles

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-07-M-3719
Agency Tracking Number: F071-258-0022
Amount: $99,360.00
Phase: Phase I
Program: SBIR
Awards Year: 2007
Solicitation Year: 2007
Solicitation Topic Code: AF071-258
Solicitation Number: 2007.1
Small Business Information
330 West Gray St., Suite 511, Norman, OK, 73069
DUNS: 121251446
HUBZone Owned: Y
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 James Grimsley
 President / CEO
 (405) 307-0397
Business Contact
 James Grimsley
Title: President / CEO
Phone: (405) 307-0397
Research Institution
Technological advances in energy harvesting (EH) offer significant benefits to powering micro aerial vehicles (MAVs) by extending mission length and range. Currently, batteries limit the range and mission time of MAVs since the batteries contain a finite supply of energy. The proposed research is unique in that it considers the use of multiple EH sources along with both batteries and supercapacitors to store energy. Supercapacitors represent a highly reversible storage mechanism and can be used for energy buffering, primary storage for low-power subsystems, and parallel operation with batteries to reduce peak current demands on batteries. The proposed power supply functions are isolated from other vehicle subsystems by the use of a separate energy-efficient supervisory power control system so that the duty cycles of other subsystems can be optimized based on mission needs and availability of energy. Maximum Power Point Tracking (MPPT) is accomplished by efficient computational techniques so that maximum efficiency is obtained from the EH sources. The supervisory control system also directs EH sources to either recharging functions or to direct application of power to other subsystems. The proposed Phase I project will investigate the use of solar, power line inductance, and mechanical vibration as EH sources.

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

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