Permanent-magnet switched-flux machine

At least one permanent-magnet switched-flux (PMSF) device comprising:

• a shaft about a central axis extending axially through the PMSF device;
• an outer rotor carried by the shaft;
• a plurality of rotor poles carried by the outer rotor and disposed around an inner surface of the outer rotor in a rotor pole circle;
• and
• an inner stator encircling the shaft and comprising:
• a stator core having a core axis co-axial with the central axis;
• a first plurality of permanent magnets mounted in a first permanent magnet circle radially outwardly in a first transverse plane extending transversely from the stator core axis in the first transverse plane;
• and
• a second plurality of permanent magnets mounted in a second permanent magnet circle radially outwardly in a second transverse plane extending transversely from the stator core axis in the second transverse plane,
• the first and second pluralities of permanent-magnets each comprising permanent magnets of alternating polarity from one permanent magnet to an adjacent permanent magnet in the corresponding plurality of permanent magnets.