Grain boundary engineering of low loss ferrite cores required for high efficiency power electronics components

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00024-11-C-4179
Agency Tracking Number: N093-209-0902
Amount: $999,204.00
Phase: Phase II
Program: SBIR
Awards Year: 2011
Solicitation Year: 2009
Solicitation Topic Code: N093-209
Solicitation Number: 2009.3
Small Business Information
36 Station St, Sharon, MA, -
DUNS: 829728067
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Anton Geiler
 Principal Investigator
 (617) 780-7983
 geiler@metamagneticsinc.com
Business Contact
 Elaine Trudell
Title: Program Manager
Phone: (781) 636-8275
Email: trudell@metamagneticsinc.com
Research Institution
 Stub
Abstract
The development of switch mode power supplies is constantly challenging the ferrite industry to produce new, high-quality ferrite cores capable of operating at increasingly higher frequencies and low loss. Furthermore, it is important to reduce the power losses of ferrite cores used in transformers in order to maximize output power and efficiency. This program"s technical objectives are to develop boundary engineered ferrite materials with high magnetic flux density (Bs>500 mT), high initial permeability (ur>500), low power loss (PL<300 mW/cm3 at 10mT and 100oC) in the frequency range of 0.5-7 MHz. Further, the development of compaction and thermal processing methods to produce ferrite cores while maintaining the boundary engineered structure is pursued. Optimized ferrite cores will be utilized to build planar transformers that can be used in future power electronics systems or retrofitted into existing ones. The proposed boundary engineered ferrite materials are expected to be far superior to those presently utilized to develop switched-mode power supplies, dc-to-dc converters, and other power electronics components. Increased operating frequency range, increased saturation magnetization, reduced core losses, and improved temperature stability are expected to produce a significant reduction in size, weight, cost, and power consumption of power systems.

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

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