LINEAR STEPPER MOTOR Russian patent published in 2009 - IPC H02K41/03 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, particularly to linear permanent magnet stepper motors and can be used in industrial, transport and electromechanical systems. The linear stepper motor has main imbricated cores with stator heelpieces 1, with wide cores 2 and with narrow cores 3, high-coercivity permanent magnets 4, two-phase winding 5 with phases A and B, and an additional imbricated core 8. Plates 6 are mechanically connected to a nonmagnetic plate 10 and form a liner. Plates 7 are mechanically connected to the stator by a nonmagnetic plate 11. Each plate has alternating ferromagnetic and nonmagnetic elements, lying crosswise. All magnetic elements of the plates and all teeth have the same lateral dimensions. Magnetic elements of the plate of the liner are at equal distance from each other, which determines the tooth spacing. Teeth on the wide and narrow cores are shifted by half the tooth division, and teeth on cores of neighbouring stator magnetic circuits - by quarter of the tooth division. Teeth of main stator magnetic circuits, additional magnetic circuit and magnetic elements of the plate, joined to the stator, have the same longitudinal position. Phases A and B lie alternately on wide cores. Neighbouring permanent magnets are magnetised tangentially and head-on.

EFFECT: improved weight and size characteristics.

3 dwg