Optimal Design and Prototype Development of Aircraft Generators with Increased Power Density

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-08-C-2859
Agency Tracking Number: F071-188-0523
Amount: $748,866.00
Phase: Phase II
Program: SBIR
Awards Year: 2008
Solicitation Year: 2007
Solicitation Topic Code: AF071-188
Solicitation Number: 2007.1
Small Business Information
PC KRAUSE & ASSOC., INC.
3016 Covington Street, West Lafayette, IN, 47906
DUNS: 161183322
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Benjamin Loop
 Mgr, Engrg Services and S
 (765) 464-8997
 loop@pcka.com
Business Contact
 Eric Walters
Title: Vice President
Phone: (765) 464-8997
Email: walters@pcka.com
Research Institution
N/A
Abstract
The primary objective of the proposed work is to investigate design techniques to improve torque density, power density, and efficiency in wound-rotor synchronous machines. The underlying principle of the proposed design technique is to alter the flux paths in the machine to increase torque production. This will be achieved through optimally altering the stator tooth geometry, rotor tooth geometry, and magnetic material properties. The design process is automated by an evolutionary optimization algorithm that employs a finite element analysis program as an objective function evaluation engine. Finite element modeling in the Phase I effort showed a potential increase of 12.2% in average torque production for the F18E/F generator. In the proposed Phase II effort, prototype machines will be built based on the designs obtained in the Phase I. Hardware validation of the approach will be performed with the help of GE Aviation. In order to investigate optimization of machines at high-speeds, additional research will be carried out to enhance the finite element modeling capabilities. These enhancements include saturation, eddy current effects, and skew. Finally, extensive statistical analysis of the performance of the genetic optimization procedure will be carried out to improve the design technique. The result will be a commercially viable machine design software package that could be adopted by government agencies and industry.

* information listed above is at the time of submission.

Agency Micro-sites

US Flag An Official Website of the United States Government