Patent ID: 7190094
Filing Date: 2007-03-13
Classification: H02K

Abstract:
1. A turbo-generator comprising: a rotor body defining an axis; and a rotor winding disposed around the rotor body, the rotor winding including a sub slot, a plurality of first axial cooling ducts disposed in an axial direction and axially adjacent to each other and axially separated from each other by a first flow baffle to prevent cross flow, each first axial cooling duct having a first inlet and a first outlet, and a plurality of second axial cooling ducts disposed adjacent and parallel to the first axial cooling ducts and axially adjacent to each other for multi-path cooling, each of the second axial cooling ducts having a second inlet and a second outlet, wherein each first inlet is disposed axially offset from a respective second inlet and each first outlet is disposed axially offset from a respective second outlet.