MULTIPOLE COMMUTATOR MACHINE WITH ODD NUMBER OF POLE PAIRS Russian patent published in 1995 - IPC

FIELD: primarily six-pole and ten-pole low-power electrical machines. SUBSTANCE: electrical machine has inductor with poles, brushes installed on two diametrically opposite brush studs contacting maximum two commutator bars, armature with plain wave winding having equal first and second winding pitches and, with slotted armature, provided with as many coils as there are armature slots; it also has commutator with number K of bars. Inductor has different pole pitches two of which are, respectively, for transposed and transposed windings 180(K± p∓ 1)·(pK)^-1 geometric degrees arranged on diametrically opposite sides and (2p-2) pitches of 180·(K∓ 1)(pK)^-1 geometric degrees; pole arcs within two first given pole pitches differ from remaining pole arcs by value equal in limit to difference in pole pitches and amounting to 1/2Kth part of inductor bore circumference. EFFECT: improved design. 1 dwg