Rotating back iron for synchronous motors/generators
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United States of America Patent
Stats
-
Nov 6, 2007
Grant Date -
Feb 13, 2003
app pub date -
May 31, 2002
filing date -
May 12, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to systems and methods for a synchronous motor/generator including at least one back iron element which is rotated along with a rotor of the motor/generator. Rotation of the back iron(s) mitigates eddy current losses and improves efficiency in the motor/generator. The motor/generator also includes at least one stator winding supported in a non-conductive structure attached to the machine frame. The motor/generator of the present invention can also include at least one permanent magnet located in the rotor. The permanent magnet(s) cooperates with rotor windings to generate a DC magnetic field for the rotor. The components of the motor/generator can be configured in an axial gap topology, radial gap topology, or any other suitable topology.
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