US Patent 11962194 Rotating electric machine

A rotating electric machine includes a field system and an armature. The field system includes a magnet section having a plurality of magnetic poles whose polarities alternate in a circumferential direction. The armature includes a multi-phase armature coil. Either of the field system and the armature is configured as a rotor. The magnet section is configured to have an easy axis of magnetization oriented such that the closer the position to a d-axis in the circumferential direction, the more the direction of the easy axis of magnetization becomes parallel to the d-axis.