Hybrid rotary electrical machine

A hybrid rotary electrical machine, comprising:

• a stator including a stator core including an annular core-back portion and a plurality of main poles radially protruded from the core-back portion, each of the main poles including a plurality of inductor teeth provided at a tip end thereof, the stator further including multi-phase coils wound on the main poles of the stator core;
• and
• a rotor including one or more rotor elements including a pair of annular rotor magnetic pole members made of a magnetic material and an axially-magnetized annular permanent magnet interposed between the annular rotor magnetic pole members, the rotor magnetic pole members being rotatably arranged with respect to the stator with a radial air gap provided therebetween;
• wherein
• each of the rotor magnetic pole members includes a specified number of magnetic teeth arranged at an equal pitch T, the pitch T corresponding to an angle between center portions of adjacent teeth on the rotor magnetic pole members, on an inner circumferential surface or an outer circumferential surface thereof facing the stator, the rotor magnetic pole members being arranged such that the magnetic teeth of one of the rotor magnetic pole members are deviated by about T/2 from the magnetic teeth of the other rotor magnetic pole member;
• each of the rotor magnetic pole members includes cutout portions provided on the inner circumferential surface or the outer circumferential surface of each of the rotor magnetic pole members in a specified positional relationship with respect to the magnetic teeth;
• and
• the cutout portions of one of the rotor magnetic pole members are axially aligned with the cutout portions of the other rotor magnetic pole member turned upside down such that the magnetic teeth of one of the rotor magnetic pole members have a phase difference of about T/2 with respect to the magnetic teeth of the other rotor magnetic pole member in a circumferential direction.