An electrical machine having a stator with rectangular and...

H - Electricity – 02 – K

Patent

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Details

H02K 1/16 (2006.01)

Patent

CA 2643125

Arrangement at an electric machine, particularly motor, generator, or actuator, with a stator with teeth (11, 12) carrying coils (15), particularly one layer, for concentrated windings. A permanent magnetic rotor is movable relatively to the stator (11, 12). The teeth of the stator are arranged for receiving coils (15) with generally rectangular opening. Advantages are achieved if the stator teeth (11, 12) are provided to receive generally identical coils (15) closing the grooves (14, 16). The teeth (11, 12) may be alternating rectangular and converging/diverging toward the top, to provide grooves (14, 16), with parallel sides to enter the coils (15). The converging teeth (22) have preferably a shortened top (23). The grooves are preferably provided to make room for a semi magnetic groove wedge (17, 18) between adjacent teeth.

La présente invention concerne un dispositif dans une machine électrique, particulièrement un moteur, générateur, ou actionneur, comportant un stator pourvu de dents (11, 12) qui supportent des bobines (15), particulièrement une couche, pour enroulements concentrés. Un rotor magnétique permanent est mobile par rapport au stator (11, 12). Les dents du stator sont conçues pour recevoir des bobines (15) avec une ouverture généralement rectangulaire. Les dents du stator sont conçues, de façon avantageuse, pour recevoir des bobines généralement identiques (15) qui ferment les rainures (14, 16). Les dents (11, 12) peuvent être rectangulaires et converger/diverger vers la partie supérieure en alternance, pour ménager dans les rainures (14, 16), des côtés parallèles pour entrer dans les bobines (15). Les dents convergentes (22) possèdent de préférence une partie supérieure raccourcie (23). Les rainures sont de préférence prévues pour faire de la place à une cale de rainure semi-magnétique (17, 18) entre des dents adjacentes.

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