Rotary electric machine with radial cooling

H - Electricity – 02 – K

Patent

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Details

H02K 1/20 (2006.01) H01F 27/28 (2006.01) H02K 3/28 (2006.01) H02K 3/40 (2006.01) H02K 3/48 (2006.01) H02K 15/08 (2006.01) H02K 9/19 (2006.01)

Patent

CA 2261638

A rotating electric machine comprising a stator (1) wound with a high-voltage cable and provided with stator teeth (4) extending radially inwards from an outer yoke portion (5), wherein at least one stator tooth (4) is connected to at least one cooling tube (18) running radially in the stator tooth (4) and connected to a cooling circuit (34) in which coolant (36) is arranged to circulate and wherein the cooling is arranged to take place over at least most of the axial extension of the stator tooth (4), and also a method of cooling a rotating electric machine provided with high-voltage stator windings, wherein the stator is cooled by a coolant (36) being caused to circulate in a cooling circuit (34) through cooling ducts running radially through the stator teeth (4).

Cette invention se rapporte à un générateur électrique rotatif, qui comprend un stator (1) dont l'enroulement est constitué par un câble haute tension et qui est pourvu de dents (4) s'étendant radialement vers l'intérieur à partir d'un étrier externe (5). Au moins l'une des dents (4) du stator est reliée par au moins un tube de refroidissement (18) s'étendant radialement dans la dent (4) du stator et relié à un circuit de refroidissement (34) dans lequel circule un réfrigérant (36), le refroidissement s'effectuant sur au moins la majeure partie de l'extension axiale de la dent (4) du stator. Cette invention se rapporte également à un procédé de refroidissement d'un générateur électrique rotatif pourvu d'enroulements de stator haute tension, le stator étant refroidi par un réfrigérant (36) qui circule dans un circuit de refroidissement (34) le long de conduits de refroidissement s'étendant radialement à travers les dents (4) du stator.

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