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United States Patent Application

View the Complete Application at the US Patent & Trademark Office
A dual magnetic phase rotor lamination for use in induction machines is disclosed. A rotor assembly is provided that includes a rotor core and a plurality of rotor conductors mechanically coupled to the rotor core and positioned thereabout, with the plurality of rotor conductors positioned within slots formed in the rotor core. The rotor core comprises a plurality of rotor laminations that collectively form the rotor core, with each of the rotor laminations being composed of a dual magnetic phase material and including a first rotor lamination portion comprising a magnetic portion and a second rotor lamination portion comprising a non-magnetic portion, wherein the second rotor lamination portion comprises a treated portion of the rotor lamination that is rendered non-magnetic so as to adjust a leakage inductance of the induction machine.
Galioto, Steven Joseph (Niskayuna, NY), EL-Refaie, Ayman Mohamed Fawzi (Niskayuna, NY)
General Electric Company (Schenectady NY)
13/ 853,122
March 29, 2013
GOVERNMENT LICENSE RIGHTS [0002] 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.