A rotatable transverse flux electrical machine (TFEM) comprising a stator portion and a rotor portion operatively disposed inside the stator portion is described therein, the rotor portion comprising a plurality of magnets and concentrators alternatively affixed in a cylindrical arrangement to a non-magnetic magnets-and-concentrators supporting frame, the non-magnetic magnets-and-concentrators supporting frame being operatively secured to an axial shaft concentrically aligned with a rotational axis of the rotor portion.
