Universal electric motor with variable air gap

Details Universal electric motor with variable air gap Universal electric motor with variable air gap

H - Electricity

02

K

H02K 21/38 (2006.01)

Patent

CA 2335151

The present invention relates to a universal electric motor with variable air gap. It has a rotor (1) with one or more attraction steps and a stator (2) provided with an excitation system. The excitation system comprises, mounted consecutively distanced on a stator support (20) facing the rotor (1), at least an electromagnet (21), provided with an armature (24) and with a winding (25), a control circuit (22), provided with a position detector (26) for supply power to the electromagnet, and a permanent magnet (23). The electromagnet (21) and the permanent magnet (23) are fastened onto the stator support (20) to excite the rotor alternatively, and in adjustable positions to change the direction of rotation of the rotor itself.

La présente invention concerne un moteur électrique universel avec entrefer variable. Le moteur comporte un rotor (1) à une ou plusieurs dents d'attraction et un stator (2) doté d'un système d'excitation. Ce système d'excitation comprend, montés à la suite et à une certaine distance les uns des autres sur un support de stator (20) en face du rotor (1), au moins un électroaimant (21) avec induit (24) et enroulement (25), un circuit de commande (22),avec détecteur de position (26), pour l'alimentation de l'électroaimant, et un aimant permanent (23). L'électroaimant (21) et l'aimant permanent (23) sont fixés sur le support de stator (20) de manière à exciter alternativement le rotor, ceci dans des positions réglables permettant de changer le sens de rotation du rotor lui-même.

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