Patent ID: 7230363

Claim:
A generator comprising: a rotor frame including a cylindrical body, the cylindrical body having an inner surface, an outer surface, a first end, and a second end, the inner surface defining an interior cavity; a driveshaft coupled to the cylindrical body first end along an axis; a generator housing having an inner surface that defines a substantially cylindrical cavity about the axis; a first rotor armature coupled to the inner surface of the cylindrical body, the first rotor armature having electrical windings thereon and defining a space to receive a stator assembly; a second rotor armature coupled to the outer surface of the cylindrical body and having electrical windings thereon that are electrically coupled to the first rotor armature electrical windings; a first stator fixedly coupled to the generator housing and extending into the interior cavity via the cylindrical body second end, the first stator positioned within the space defined by the first rotor armature, having electrical windings thereon that are each electrically isolated from the first rotor armature electrical windings and the second rotor armature electrical windings, substantially aligned with the driveshaft along the axis, and not surrounding the drive shaft; and a second stator surrounding the second rotor armature, having electrical windings thereon that are each electrically isolated from the first rotor armature electrical windings and the second rotor armature electrical windings, and fixedly coupled to the generator housing inner surface.