Electric motor with a low number of revolutions, in...

H - Electricity – 02 – K

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H02K 7/10 (2006.01) B66B 11/04 (2006.01) H02K 19/10 (2006.01)

Patent

CA 2629630

An electric motor (10) with a low number of revolutions comprises a rotor (17) powered by three-phase alternating voltage, a series of magnets (21, 22) and a coil forming a stator (24), in which the rotor (17) and the stator (24) have the same number of magnetic poles. The stator (24) is powered with direct voltage, and the frequency of the rotor voltage (17) is varied to obtain a predetermined number of rpm of the motor and to vary the acceleration and deceleration conditions of the motor. A thrust bearing opposes the effort of the falling brake disc.

La présente invention concerne un moteur électrique (10) avec un faible nombre de révolutions qui comprend un rotor (17) alimenté par tension alternative triphasée, une série d'aimants (21, 22) et une bobine qui forme un stator (24), dans lequel le rotor (17) et le stator (24) possèdent le même nombre de pôles magnétiques. Le stator (24) est alimenté avec une tension directe, et la fréquence de la tension de rotor (17) est variée pour obtenir un nombre prédéterminé de tr/min du moteur et pour varier les conditions d'accélération et de décélération du moteur. Un palier de butée s'oppose à l'effort du disque de frein qui tombe.

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