Cooling an electrical machine

Details Cooling an electrical machine Cooling an electrical machine

H - Electricity

02

K

H02K 5/20 (2006.01) H02K 9/02 (2006.01) H02K 9/04 (2006.01) H02K 9/06 (2006.01) H02K 9/10 (2006.01)

Patent

CA 2679637

An electrical machine includes a stator and a rotor disposed in a housing of the electrical machine. The stator includes windings having a first set of end turns at a first end of the stator and having a second set of end turns at a second, opposing end of the stator. The stator has a substantially tubular shape and an interior lateral surface. The rotor extends through the interior of the stator. A flow inlet into a volume in the housing about the first end turns is located radially outside of the interior lateral surface of the stator. A flow outlet from the volume in the housing about the first end turns is located radially outside of the interior lateral surface. The inlet and the outlet are cooperatively arranged to communicate a flow of fluid substantially transverse across the first end of the stator.

L'invention porte sur une machine électrique comportant un stator et un rotor disposés dans un logement de la machine. Le stator inclut des enroulements présentant un premier ensemble de spires à une extrémité et un deuxième ensemble de spires à l'extrémité opposée. Le stator, sensiblement tubulaire, comporte une surface latérale intérieure. Le rotor s'étend à l'intérieur du stator. Une entrée de flux dans le volume du logement entourant les spires de la première extrémité est située radialement à l'extérieur de la surface latérale intérieure du stator, et une sortie de flux du volume du logement entourant les spires de la première extrémité est située radialement à l'extérieur de la surface latérale intérieure du stator. Lesdits orifices d'entrée et de sortie coopèrent à l'écoulement d'un fluide sensiblement transversal à travers la première extrémité du stator.

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