Patent ID: 7196439
Filing Date: 2007-03-27
Classification: H02K

Abstract:
1. A rotating electrical machine comprising: a rear bearing; a rotor centered and mounted on a rotating shaft supported by at least the rear bearing, the rear bearing comprising radial outlets for a cooling fluid; a stator surrounding the rotor, the stator comprising a field coil that has windings forming the phases of the electrical machine; a power electronics circuit connected to the windings of the stator phases; a heat dissipating bridge that has a first surface on which the power electronics circuit is mounted and a second surface, opposite said first surface and oriented toward the rear bearing; wherein said second surface forms a wall for a radial flow passageway for the flow of cooling fluid, and another wall for the radial flow passageway is formed by the rear bearing supporting the rotor; wherein the second surface of the heat dissipating bridge has cooling means arranged in the fluid flow passageway; and wherein the cooling means are arranged radially in the direction of the cooling fluid flow.