WINDING WITH POLE REVERSAL Russian patent published in 1999 - IPC

FIELD: electrical engineering, development of multispeed electric motors. SUBSTANCE: in accordance with invention proposed winding has 20 coil groups with alternation of numbers of coils in groups 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2. In this case finish of 1st coil group is connected to finish of 3d coil group, start of 3d coil group is linked to start of 6th group, finish of 6th group - to finish of 8th group, start of 8th group is connected to start of 11th group, finish of 11th group is linked to finish of 13th group, start of 13th group is connected to start of 16th group, finish of 16th group - finish of 18th group, start of 18th group - to finish of 15th group, start of 15th is linked to start of 17th group, finish of 17th group is connected to finish of 20th group, start of 20th group - to finish of 5th group, start of 5th group - start of 7th group, finish of 7th group - to finish of 10th group, start of 10th group - to start of 9th group, finish of 9th group - to finish of 12th group, start of 12th group - to start of 14th group, finish of 14th group - to start of 19th group, finish of 19th group - to finish of 2nd group, start of 2nd group - to start of 1st group, leads from starts of 1st, 8th, 19th, 20th and finish of 15th coil groups. With supply of voltage to starts of 1st, 9th and finish of 15th coil groups one can form 8 pole pieces. With supply of voltage to starts of 8th, 19th and 20th coil groups and with integration of the rest in zero point one can form 6 pole pieces. EFFECT: simplified manufacturing technology of winding due to decreased number of coil groups in it, enhanced degree of usage of dimensions of motors with such windings. 5 dwg