THREE-PHASE ROD-SHAPED WAVE-WINDING FOR ELECTRICAL MACHINE WITH EVEN NUMBER q=z/6p≥4 Russian patent published in 2009 - IPC H02K3/04 H02K3/28 H02K17/14 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and electric machine building and pertains to distinctive features of stators of three-phase asynchronous and synchronous electrical machines, as well as phase wound rotors of asynchronous motors. The proposed three-phase rod-shaped wave-winding for electrical machines with even number q=z/6p≥4 is made from uniformly distributed coils with number of turns w_K=1 in each, connected in phases into one or two parallel branches. According to the first version of the invention, when q = 4, z = 24·p the coil contains 12 p turns with numbers 1K…(12·p)K with slot pitch y_p = 11 with the beginning in the odd and the end in the even slot. Each of the turns 1K…12K is connected in series with (p - 1) others, displaced by 12 numbers, in 12 parts 1A, 2A, 3Z, 4Z, 5B, 6B, 7X, 8X, 9C, 10C, 11Y, 12Y, and in phase A parts A + 2A are connected in series into one and 7X + 8X into the other branch with their connection in series or in parallel using jumpers with antiparallel connection of branch 7X + 8X with respect to 1A + 2A. The other two phases B and C are connected likewise from parts 5B + 6B, 11Y + 12Y in phase B and 9C + 10C, 3Z + 4Z in phase C with phase onset from the beginning 1K, 5K, 9K. In the second version when q = 6, z = 36·p the coil contains 18·p turns with numbers 1K…(18·p)K with slot pitch y_p= 15 with the beginning in the odd and the end in the even slot. Each of the turns 1K…18K is connected in series with (p - 1) others, displaced by 18 numbers, in 18 parts 1A, 2A, 3A, 4Z, 5Z, 6Z, 7B, 8B, 9B, 10X, 11X, 12X, 13C, 14C, 15C, 16Y, 17Y, 18Y, and in phase A parts 1A+2A+3A are connected into one and 10X+11X+12X into the other branch with their connection in series or in parallel using jumpers with antiparallel connection of branch 10X + 11X + 12X with respect to 1A + 2A + 3A. The other two phases B and C are connected likewise from parts 7B + 8B + 9B, 16Y + 17Y + 18Y in phase B and 13C+14C+15C and 4Z+5Z+6Z in phase C with phase onset from the beginning 1K, 7K, 13K. In the third version when q = 8, z = 48·p the coil contains 24·p turns with numbers 1K…(24·p)K with slot pitch y_p= 19 with the beginning in the odd and the end in the even slot. Each of the turns 1K…24K is connected in series with (p - 1) others, displaced by 24 numbers, in 24 parts 1A, 2A, 3A, 4A, 5Z, 6Z, 7Z, 8Z, 9B, 10B, 11B, 12B, 13X, 14X, 15X, 16X, 17C, 18C, 19C, 20C, 21Y 22Y, 23Y, 24Y, and in phase A parts 1A + 2A + 3A + 4A are connected into one and 13X + 14X + 15X + 16X into the other branch with their connection in series or in parallel using jumpers with antiparallel connection of branch 13X + 14X + 15X + 16X with respect to 1A + 2A + 3A + 4A. The other two phases B and C are connected likewise from parts 9B + 10B + 11B + 12B and 21Y + 22Y + 23Y +24Y in B, 17C + 18C + 19C + 20C in B and 17C + 18C + 19C + 20C and 5Z + 6Z + 7Z + 8Z in C with phase onset from the beginning 1K, 9KD, 7K. In all versions the phases of the coils are conjugated into a star (Y) or triangle (Δ) with values p= 1, 2, 3, ….

EFFECT: simple design of rod-shaped wave-winding, made in a single layer with one rod in each slot.

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