Permanent Magnet Electric Generator with Rotor Circumferentially Encircling Stator

A permanent magnet electric generator comprising:

• a housing;
• a rotor assembly disposed inside the housing and being concentric with an axis of rotation, the rotor assembly having annular outer and inner rings concentric with the axis of rotation, the rotor assembly adapted to be rotationally coupled to a source of rotational energy for rotating the rotor assembly, the rotor assembly having a plurality of magnets distributed on the inner surface of the outer ring, each magnet having a north pole and a south pole aligned to the axis of rotation such that adjacent magnets have poles of alternating polarity;
• a stator assembly secured inside the housing at a static location with respect to and in close proximity to the rotor assembly, the stator assembly having a plurality of stator blocks placed in the form of an annular ring-shaped stator member retained by a support structure, the stator member being interposed between the inner and outer rings such that the outer ring circumferentially encircles the stator member, the stator member wound with a three phase winding,
• wherein electricity is generated in the three-phase winding by rotation of the rotor assembly in relation to the stator assembly.

A permanent magnet electric generator comprising:

• a housing;
• a rotor assembly disposed inside the housing and being concentric with an axis of rotation, the rotor assembly having an annular outer ring and a laminated inner ring, the rotor assembly adapted to be rotationally coupled to a source of rotational energy for rotating the rotor assembly, the rotor assembly having a plurality of magnets distributed on the inner surface of the outer ring, each magnet having a north pole and a south pole aligned to the axis of rotation such that adjacent magnets have poles of alternating polarity;
• a stator assembly secured inside the housing at a static location with respect to and in close proximity to the rotor assembly, the stator assembly having a plurality of laminated stator blocks placed in the form of an annular ring-shaped stator member retained by a support structure, the stator member being concentric with the axis of rotation and being interposed between the inner and outer rings such that the outer ring circumferentially encircles the stator member, the stator member wound with a three phase winding,
• wherein electricity is generated in the three-phase winding by rotation of the rotor assembly in relation to the stator assembly.