Electric motor

H - Electricity – 02 – K

Patent

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Details

H02K 33/00 (2006.01) H01F 27/24 (2006.01) H01F 30/12 (2006.01) H02K 35/00 (2006.01)

Patent

CA 2350491

Electric motor (10) includes a magnet (12) in the form of a cockcroft ring provided with a circumferential air gap (18) through which lines of magnetic flux extend. A planar disc (14) is provided that is capable of two dimensional motion relative to the magnet (12). Disc (14) is provided with a number of electrically conductive paths (C) each of which has a segment (16) that cuts across the lines of magnetic flux in the air gap (18). A multi-phase transformer (40) having a number of windows (42) is arranged so that each path (C) is linked with at least one of the windows (42). The multi-phase transformer (40) induces currents to flow in the respective conductive paths (C) and thus through respective segments (16) of each path (C). The current passing through the segments (16) interact with the lines of magnetic flux passing through the gap (18) to produce a thrust force that acts on the disc (14) in a direction as dictated by the "right hand rule". The magnitude and direction of the respective thrust forces and thus the motion of the disc (14) is controlled by varying the magnitude and/or phase relationship of the currents flowing through the segments (16). In this way the disc (14) can be controlled to move in any desired path in two dimensions.

L'invention concerne un moteur (10) électrique qui comprend un aimant (12) se présentant sous forme d'un anneau de Cockcroft comportant un entrefer (18) périphérique traversé par des lignes de flux magnétique. Ce moteur comprend en outre un disque (14) planaire capable d'effectuer un mouvement bidimensionnel par rapport à l'aimant (12). Ce disque (14) comprend un certain nombre de voies (C) conductrices d'électricité dont chacune comporte un segment (16) qui recoupe les lignes de flux magnétique dans l'entrefer (18). Un transformateur (40) polyphasé comprenant plusieurs ouvertures (42) est disposé de telle manière que chacune des voies (C) est connectée à au moins une des ouvertures (42). Le transformateur (40) polyphasé entraîne le passage des courants dans les voies (C) conductrices respectives, à travers les segments (16) respectifs de chaque voie (C). L'interaction du courant passant dans les segments (16) avec les lignes de flux magnétique passant à travers l'ouverture (18) provoque une force de poussée qui s'exerce sur le disque (14) dans une direction conforme au sens trigonométrique. L'amplitude et la direction des forces de poussée respectives et, partant, le mouvement du disque (14) sont réglés par la variation de l'amplitude et/ou du rapport de phase des courants passant à travers les segments (16). Ce système permet de régler le mouvement du disque (14) sur n'importe quelle trajectoire bidimensionnelle.

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