Segmented stator for a permanent magnet electric machine having a fractional-slot concentrated winding

A Torque Tunnel Halbach Array electric machine comprising:

• a magnetic toroidal cylinder including;
• an inner rotor assembly, the inner rotor assembly comprising a plurality of inner permanent magnets positioned about and coupled to an inner rotor core, wherein the plurality of inner permanent magnets form a plurality of flux shaping Halbach Arrays configured to focus the Flux Density Distribution (FDD) in the magnetic toroidal cylinder;
• a first axial rotor assembly, the first axial rotor assembly comprising a plurality of permanent magnets positioned about and coupled to a first axial rotor core, wherein the plurality of first axial permanent magnets form a plurality of flux shaping Halbach Arrays configured to focus the FDD in the magnetic toroidal cylinder, the first axial rotor assembly coupled at an inner edge to a first end of inner rotor assembly;
• a second axial rotor assembly, the second axial rotor assembly comprising a plurality of permanent magnets positioned about and coupled to a second axial rotor core, wherein the plurality of second axial permanent magnets form a plurality of flux shaping Halbach Arrays configured to focus the FDD in the magnetic toroidal cylinder, the second axial rotor assembly coupled at an inner edge to a second end of the inner rotor assembly;
• such that, the rotor core assemblies form a three sided magnetic torque tunnel comprising at least a first magnetic pole tunnel segment and a second magnetic pole tunnel segment, and
• a coil winding assembly positioned within the magnetic toroidal cylinder, the coil winding assembly including a plurality of coils, wherein the first or second magnetic pole tunnel segment surround at least one of the plurality of coils.