Lightweight high power electromotive device

Details Lightweight high power electromotive device Lightweight high power electromotive device

H - Electricity

02

K

H02K 1/16 (2006.01) H01F 7/08 (2006.01) H02K 3/42 (2006.01) H02K 21/12 (2006.01) H02K 21/22 (2006.01)

Patent

CA 2051118

A lightweight electromotive device with a high power-to-weight ratio capable of operating as an efficient motor, alternator or generator includes a magnetic-flux producing assembly comprising a plurality of spaced magnetic elements (32,33) and an armature assembly (82) formed by winding conductive, non-magnetic wire (84), such as copper wire, on flux carrying core (86) or stator bar elements. The elements (86) are shaped to form an eddy current shield for the windings (84) and provide two heat radiating surfaces. This allows the device to operate with minimal eddy current losses and maximum radiation and convection cooling. The armature windings (84) and flux carrying elements (86) are dispersed as a further measure to avoid creating opposing induced currents.

Dispositif électromoteur léger présentant un rapport puissance-poids élevé et capable de fonctionner en tant que moteur, alternateur ou génératrice à bon rendement. Le dispositif comporte un ensemble produisant un flux magnétique comprenant des éléments magnétiques espacés (32, 33) et une armature (82) formée en enroulant un fil conducteur non magnétique (84), tel un fil de cuivre, sur un noyau acheminant le flux (86) ou les éléments de la barre-stator. Les éléments (86) présentent une forme permettant de former un blindage contre les courants de Foucault pour les enroulements (84) et fournissent deux surfaces à rayonnement thermique. Tous ces éléments permettent au dispositif de fonctionner avec une perte minimale due aux courants de Foucault, et un refroidissement maximal par rayonnement et par convection. La dispersion des enroulements (84) de l'armature et des éléments acheminant le flux (86) constitue une autre mesure pour éviter de créer des courants induits opposés.

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