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Permanent-magnet-less synchronous reluctance system

United States Patent

8,264,120
September 11, 2012
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A permanent magnet-less synchronous system includes a stator that generates a magnetic revolving field when sourced by an alternating current. An uncluttered rotor is disposed within the magnetic revolving field and spaced apart from the stator to form an air gap relative to an axis of rotation. The rotor includes a plurality of rotor pole stacks having an inner periphery biased by single polarity of a north-pole field and a south-pole field, respectively. The outer periphery of each of the rotor pole stacks are biased by an alternating polarity.
Hsu; John S. (Oak Ridge, TN)
UT-Battelle, LLC (Oak Ridge, TN)
12/ 274,895
November 20, 2008
GOVERNMENT INTEREST The application was made with United States Government support under Contract No. DE-AC05-000R22725 between the United States Department of Energy and U.T. Battelle, LLC. The United States Government has certain rights in these inventions.