Patent ID: 7061148
Filing Date: 2006-06-13
Classification: B63H,H02K,Y02T

Abstract:
1. An electrical machine comprising a stator including successive recesses provided in a circumferential direction of the stator about a stator axis, the recesses each containing at least one winding and opening out onto an inlet face of the stator, and a rotor mounted rotatably about the axis of the stator and having an active face including permanent magnets facing the inlet face of the stator and forming an air gap with the inlet face of the stator, each of the recesses of the stator extending in a longitudinal direction and from the inlet face of the stator, the inlet face being directed towards the air gap, in a direction perpendicular to the longitudinal direction and wherein each recess is formed with a preselected depth of the recess, the machine further including a cooling device comprising, in each of the stator recesses, at least one cooling tube extending in the longitudinal direction of the recess, and means for setting in circulation a cooling fluid inside each of the cooling tubes of the stator, the cooling tubes being in communication at their ends with manifolds for the supply and evacuation of cooling fluid, the tubes being connected to a cooling circuit comprising at least one pump and one heat exchanger, so that the cooling fluid circulates in a closed circuit, wherein for each of the recesses of the stator, at least one cooling tube is located in the inlet portion of the recess closest to the air gap.