SINGLE-PHASE SYNCHRONOUS MOTOR Russian patent published in 1997 - IPC

FIELD: electrical engineering. SUBSTANCE: motor has stator with coil placed inside it, and multipole permanent-magnet rotor. Coil is secured inside stator by means of magnetic core parts and is placed inside them. Each magnetic core part is built up of two parts 6 and 7 forming each pole of two halves 8 and 9. Magnetic core parts 6 and 7 are separated by screen 10 made in the form of disk having through holes 11 to pass halves 9 of each pole. Proposed machine can be used as stepping motor. EFFECT: improved starting and operating characteristics of motor throughout entire range of controlled speed from zero to maximum value due to improved flux linkage between stator and rotor and due to better screening of motor poles. 5 cl, 4 dwg