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DUAL MAGNETIC PHASE STATOR LAMINATIONS FOR STATOR PERMANENT MAGNET ELECTRIC MACHINES

United States Patent Application

20140239763
A1
View the Complete Application at the US Patent & Trademark Office
A dual magnetic phase stator lamination for use in stator permanent magnet electric machines is disclosed. The permanent magnet electrical machine includes a rotor mounted for rotation about a central axis and a stator positioned about the rotor and comprising a plurality of stator laminations, wherein each of the stator laminations is composed of a dual magnetic phase material and includes a first stator lamination portion comprising a magnetic material and a second stator lamination portion comprising a non-magnetic material, the second stator lamination portion comprising an area positioned adjacent to each of a plurality of permanent magnets embedded in the stator lamination. The second stator lamination portion comprises a heat treated portion of the stator lamination, with the heat treating of the second stator lamination portion rendering the dual magnetic phase material of the stator lamination non-magnetic at the locations of the second stator lamination portion.
Raminosoa, Tsarafidy (Niskayuna, NY), EL-Refaie, Ayman Mohamed Fawzi (Niskayuna, NY), Alexander, James Pellegrino (Ballston Lake, NY)
GENERAL ELECTRIC COMPANY (Schenectady NY)
13/ 780,773
February 28, 2013
GOVERNMENT LICENSE RIGHTS [0001] This invention was made with Government support under contract number DE-EE0005573 awarded by the United States Department of Energy. The Government has certain rights in the invention.