THREE-PHASE WINDING SWITCHABLE TO 6/4 POLES Russian patent published in 2000 - IPC

FIELD: electric machine engineering. SUBSTANCE: proposed winding includes 18 coil groups with number of coils in coil groups 1K,2K,1K,2K,1K,2K,1K, 1K, 1K, 1K,2K,1K,2K,1K,2K,1K,1K,1K, where K=1, 2, 3, etc with starts and finishes in each phase connected in series opposition. In first phase coil groups 1, 4, 7, 10, 13, 16, in second phase coil groups 2, 5, 9, 11, 14, 18 and in third phase coil groups 17, 3, 6, 8, 12, 15 made with pitch y=5K are connected. Starts of phases are taken from start of 1st and finishes of 2nd and 17th coil groups with six poles and from starts of 6th, 9th and finish of 7th coil groups with four poles. Winding has six lead-out finishes making it possible to switch poles according to phase mating circuit Y/YY. For presentation of six poles voltage is supplied to terminals 19, 20, 21, leads 22, 23, 24 in this case remain free. If voltage is supplied to terminals 22, 23, 24 with integrated terminals 19, 20, 21 then four-pole winding is obtained. Technical objective of invention lies in expansion of functional capabilities of winding by way of its usage in motors with number of slots in stator multiple of 24K, where K=1, 2, 3... . EFFECT: expanded functional capabilities of winding. 5 dwg