MECHANICAL DESIGN OF FIELD WINDING ON MOTOR STATOR CORE Russian patent published in 2002 - IPC

FIELD: electrical engineering; motors with improved field winding on stator core. SUBSTANCE: field winding on stator core of motor that has stator and rotor is characterized in that it incorporates series-connected upper coils and lower ones, first power leads being formed on one end of lower coils and connecting wire disposed between lower and upper coils being used to form second power leads for selective power supply through first or second power leads when motor is placed in operation so as to ensure choice of desired number of field winding turns. Proposed design makes it possible to prevent excessive temperature rise in motor at the same time enabling selective use of field coils. EFFECT: enhanced reliability. 2 cl, 3 dwg