FIELD: electricity.
SUBSTANCE: invention refers to the field of electric engineering, in particular, to electric machines, and relates to features of design of electric motors with low rpm. Electric motor (10) is proposed with low rpm, comprising rotor (17), with supply from source of three-phase AC voltage, magnets (21, 22) and stator coil (24). Rotor (17), stator (24) and magnets (21, 22) are located in body (13) of pulley, which rotates around fixed axis (11), besides, rotor (17) is fixed to body (13), coil of stator (24) is arranged with supply from DC voltage source. Magnets (21, 22), forming stator (24), are fixed to axis (11) and are arranged with the possibility to locate a stator (24) coil in them, and body (13) of pulley is fixed to two diamagnetic side plates (16, 16'). Motor comprises electromagnet brake (25), including two metal disks, one of which is arranged as a whole with one of specified diamagnetic plates (16'), and the other one with magnet (22), which forms poles of stator (24), and spring pushes of disks arranged in according slots of magnet (22). To resist action of lowering braking disk, there is a thrust bearing. Besides, the possibility to control frequency of rotor voltage is provided to produce required motor rpm.
EFFECT: production of perfect working characteristics of motor with low rpm, having compact design, which does not require step-down gear.
7 cl, 1 dwg
