A stator design integrates permanent magnets within coil cores to generate pre-magnetization flux for contactless rotor drive.
Segmented rotor magnets vary flux via stator coils, reducing fabrication costs by replacing expensive permanent magnets with lower-coercive variable units.
Tangential permanent magnets in rotor recesses compensate magnetic armature reaction, reducing harmonic distortion and iron losses.
A working assembly uses an electromagnetic driving field to rotate agricultural tools via permanent magnet interaction.