Doubly salient permanent magnet machine with field weakening...

H - Electricity – 02 – K

Patent

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Details

H02K 1/14 (2006.01) H02K 1/17 (2006.01) H02K 1/24 (2006.01) H02K 21/38 (2006.01) H02P 9/40 (2006.01) H02P 25/08 (2006.01)

Patent

CA 2226004

A permanent magnet machine (10) combines both principles of variable reluctance machines and permanent magnets, and comprises a rotor (11) with salient rotor poles (12) and a stator (14) with salient stator poles (16 and 17). A pair of ferrite arched permanent magnets (21 and 22) are embedded in the stator yoke (15) beneath respective stator poles (16 and 17) and are arranged symmetrically around the central axis (13) of the machine (10). A field winding (F) for boosting or weakening the primary flux generated by the permanent magnets (21 and 22) is wound in a special arrangement.

L'invention concerne une machine à aimant permanent qui combine à la fois les principes propres aux machines à réluctance variable et ceux d'un aimant permanent. Ladite machine comprend un rotor (11) avec des pôles en saillie (12) et un stator (14), avec également des pôles en saillie (16 et 17). Une paire d'aimants permanents en ferrite, de forme arquée (21 et 22), sont encastrés dans la culasse du stator (15), en dessous de chacun des pôles du stator (16 et 17), et disposés symétriquement autour de l'axe central (13) de la machine (10). Une bobine inductrice (F) chargée d'augmenter ou de réduire le flux primaire créé par les aimants permanents (21 et 22) est enroulée dans un dispositif spécial.

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