ARMATURE OF DIRECT CURRENT ELECTRIC MOTOR Russian patent published in 1997 - IPC

FIELD: electric engineering, in particular, design of traction electric motors, electric motors for ship propellers, for dredges and so on. SUBSTANCE: along effective length of armature, each winding layer is built up from alternating winding conductors which are covered with coil insulation and ferromagnetic elements which may be shaped as laminated trapezium cross sections. Each winding layer is covered with bandage from insulation material, in particular, glass fiber ribbon. EFFECT: decreased weight and size, low level of teeth harmonic oscillations. 2 cl, 1 dwg