Stator for axial flux machine

A stator 100 for an axial flux machine, comprising a plurality of stator bars 120 disposed circumferentially at intervals around an axis where each of the bars has a set of windings 130 wound therearound. The bars are arranged to provide a central hollow region 140, and have an outer periphery facing away from the axis and an inner periphery facing towards the axis. A plurality of radially outwardly disposed electrical interconnects 150 are provided for connecting two or more windings together and extend circumferentially along at least a portion of the outer periphery of the bars. A plurality of radially inwardly disposed interconnects 160 are also provided extending circumferentially along at least a portion of the inner periphery, wherein the outer periphery is devoid of outwardly disposed interconnects along one or more portions 170. The radially inwardly portion of the stator may comprise interconnects corresponding to the outward portion devoid of interconnects. One or more electrical transitions 180 between the inwardly and outwardly interconnects may be provided via a respective winding. The windings may be a single layer using a ribbon shaped wire and wound in a 3-phase star arrangement. The machine may be a single or dual rotor motor or generator that may also include a housing 200 suitable for cooling purposes.