Wisconsin Alumni Research Foundation

Permanent Magnet Synchronous Motor
WARF: P150276US01

Inventors: Robert Lorenz, Apoorva Athavale, Kensuke Sasaki, Takashi Kato, Takashi Fukushige

The Invention
A permanent magnet synchronous motor includes a stator, a rotor rotatable relative to the stator, and a magnetic structure with a low coercive force magnet and a high coercive force magnet that are arranged magnetically in series with respect to each other to define a pole-pair of the permanent magnet synchronous motor. A magnetization level of the low coercive force magnet is changeable by a stator current pulse such that a stator magnetomotive force at a rated current is equal to or larger than a product of a magnetic field strength for fully magnetizing the low coercive force magnet and a thickness of the low coercive force magnet.
For current licensing status, please contact Michael Carey at [javascript protected email address] or 608-960-9867