Machine with cup-shaped armature and air gap

H - Electricity – 02 – K

Patent

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H02K 1/22 (2006.01) H02K 1/12 (2006.01) H02K 3/00 (2006.01) H02K 3/04 (2006.01) H02K 3/46 (2006.01) H02K 3/47 (2006.01) H02K 16/00 (2006.01) H02K 23/26 (2006.01) H02K 23/54 (2006.01) H02K 23/58 (2006.01)

Patent

CA 2362360

An electro-mechanical machine having a field producing assembly (34, 34', 34a, 34b) providing a cup-shaped air gap (133) which is circumferentially disposed about an axis of rotation. The field assembly (34, 34', 34a, 34b) produces a circumferential distribution of magnetic flux in the cup-shaped air gap (133) having n periodic extremes of flux density (34, 34', 34a, 34b) about the axis. A cup-shaped electrical assembly (128) or armature is disposed in the air gap (133) and the armature (128) and field assembly (34, 34', 34a, 34b) are relatively rotatable. The armature (128) has a circular array of C non- overlapping coils (131) on each of its inner and outer faces with the coils (131) on one face being angularly offset from the coils (131) on the other face. Moreover, since the air gap (133) and coils (131) are cup-shaped, it is possible to achieve, for a machine of given diameter and form factor, a horsepower and torque which was previously possible only with substantially larger disk-type motors. That is because the total volume of the air gap (133) and coils (131) correspond to those of a much larger diameter disk-type motor.

La présente invention concerne une machine électromécanique qui comporte un assemblage (34, 34', 34a, 34b) générateur de champ ayant un entrefer (133) en forme de coupelle placé de manière circulaire autour d'un axe de rotation. Ledit assemblage (34, 34', 34a, 34b) permet une distribution circonférentielle du flux magnétique dans l'entrefer (133) ayant n valeurs extrêmes périodiques d'induction (34, 34', 34a, 34b) magnétique autour de l'axe. Un assemblage (128) électrique ou armature en forme de coupelle est placé dans l'entrefer (133), et l'armature (128) et l'assemblage (34, 34', 34a, 34b) de champ sont rotatifs l'un par rapport à l'autre. L'armature (128) comporte un groupement circulaire de bobines (131) C, ne se chevauchant pas, sur chacune de ses faces intérieure et extérieure, les bobines (131) se trouvant sur une face étant angulairement décalées par rapport aux bobines (131) se trouvant sur l'autre face. De plus, étant donné que l'entrefer (133) et les bobines (131) sont en forme de coupelle, il est possible, pour une machine d'un diamètre et facteur de forme donnés, d'avoir une puissance en chevaux et un couple qui n'étaient auparavant possibles qu'avec des moteurs à disque sensiblement plus grands. En effet, le volume total de l'entrefer (133) et des bobines (131) correspond au volume d'un moteur à disque d'un diamètre beaucoup plus grand.

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