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AssigneeMetglas, Inc.
InventorsEric Alan THEISEN, Donald E. Granger, JR., Thomas Joseph Hastie, Donald Robert Reed, JR.
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The invention relates to the reduction of core losses in soft magnetic applications utilizing amorphous foil as the core material. Amorphous foil is known to have lower losses when compared to crystalline silicon steel laminations. It is found that a reduction of 10-40% of losses can be achieved over the current state of the art amorphous material by mechanical scribing of the surface of the soft magnetic laminations comprising the wound core in power conditioning devices such as a transformer. The scribing process introduces control of the magnetic domains causing ease of magnetic flux reversal.
-9. (canceled)
An amorphous foil having a width of 75 to 260 mm and a scribed pattern with a wavelength of 0.5 to 10 mm.
An amorphous core comprising an amorphous foil having a width of 75 to 260 mm and a scribed pattern with a wavelength of 1 to 5 mm, wherein the amorphous foil is wound into a toroidal core or into a laced distribution transformer core, and wherein the amorphous core has reduced losses of core losses less than 0.2 W/kg when tested at 1.4 T, 60 Hz and less than 0.17 W/kg when tested at 1.3 T, 60 Hz.
An amorphous foil having a width of 75 to 260 mm and a scribed pattern with a wavelength of 1 to 5 mm, wherein the amorphous foil is tested in the single sheet configuration, and wherein the amorphous foil has reduced losses of core losses less than 0.08 W/kg when tested at 1.4 T, 60 Hz and less than 0.06 W/kg when tested at 1.3 T, 60 Hz.
Dependencies are inferred from the claim text.