Electrical machine with double-sided rotor

摘要

Machines useful for wind turbine and ship propulsion purposes include a double-sided generator (12) or motor with two concentric air gaps. In one embodiment, the machine includes a double-sided rotor (86) with an inner rotor side (108) and an outer rotor side (110); and a stator (88) with an inner stator core (90) and an outer stator core (92), wherein the double-sided rotor (86) is concentrically disposed between the inner stator core (90) and the outer stator core (92).