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Core/Shell Composite Soft Magnetic Material for Advanced Motors (REVISED)

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-07ER84787
Agency Tracking Number: 82219
Amount: $99,986.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: 05
Solicitation Number: DE-PS02-06ER06-30
Solicitation Year: 2007
Award Year: 2007
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
133 Defense Highway Suite 212
Annapolis, MD 21401
United States
DUNS: 153908801
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Todd Heil
 (410) 987-8988
Business Contact
 Sharon Fehrenbacher
Title: Mrs
Phone: (410) 224-3710
Research Institution

For hybrid electric vehicle (HEV) applications, the Department of Energy (DOE) is directing an aggressive program to achieve rapid progress in permanent magnet (PM) machine development. To achieve DOE goals, PM motors must operate at twice the frequency of current electric motors used in hybrid-electric vehicles. Achieving these goals will require rotor and stator core materials with high electrical resistivity to reduce eddy currents and decrease total core losses during high frequency operation. This project will reduce core losses by using a powder metallurgy approach to create soft magnetic, high-resistivity, rotor and stator core materials. In particular, soft magnetic alloy powders will be coated with a nanolayer of a high resistivity, ferrimagnetic ferrite. The powders will be used to create dense composite parts with low porosity. This approach will isolate the electrically-conductive ferromagnetic regions with a shell of high resistivity ferrimagnetic material, thereby reducing eddy current losses while maintaining magnetic exchange coupling between metallic ferromagnetic regions. This exchange coupling is necessary to achieve high permeability materials with low hysteretic losses. Commercial Applications and other Benefits as described by the awardee: In addition to vehicle applications, improved permanent magnets should have application to distribution and power transformers, high reactance cores, communications equipment, high-efficiency fractional horsepower motors, large generators, pole pieces, and relays.

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

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