SU1372509A1 - Three-phase pole-switchable winding - Google Patents

Abstract

This invention relates to windings of electrical machines of alternating current. The aim of the invention is to improve the use of active materials. The winding is made with the 2P: 2P 3/2 pole ratio, contains coil groups (CG), which form nine branches (c) with six leads, made with the number of coils that are a multiple of 54, distributed in coil groups with serial numbers 1-21 correspondingly In the following order: К, 2К, 2К, К, 4К, 4К, 4К, К, 2К, 2К, К, 4К, 4К, 4К, К, 2К, 2К, К, 4К, 4К, 4К in each В are included CG having the following sequence numbers: first B - 17.21; the second B - 10.14; third B - 19.2; the fourth B - 12.16, n ta B - 15.20,4; pole B - 8,13,18; seventh B - 5.9; the eighth B - 1,6,11, the ninth B - 3,7. CG with numbers 21,14,19,12,15,4,8,18, 5,11,7,7 are connected in series and oppositely to other CG of corresponding B. The winding terminals are formed by connecting the terminals B as follows: for polarity P one the winding pin is formed by connecting the leads from the ends of the ninth, first and second B, the second winding lead is from the seventh, third and fourth B ends, the third winding lead is from the eighth, fifth and sixth B ends, for polarity P, one winding lead is formed by the connection conclusions from the beginnings of the third, sixth and ninth B, the second output of the winding - from the beginnings of the first, fourth In the eighth and rtoy third output winding - I started from the second, fifth and seventh V. Z - the number of coil windings, K - a positive integer, K Z / 54. 1 il. with b (l so to eat about so

Description

The invention relates to pole-selectable windings of electric machines of alternating current and can be used in two-speed motors.

The purpose of the invention is to improve the use of active materials.

The drawing shows a winding pattern for L and 6 poles for laying in 54 slots.

In this case , . In this case, the alternation of the numbers of coils in the coil groups corresponds to the row 1,2,2,1,4,4,1,2,2,1,4,4,4,1,2,2,1,4, 4,4 . The first branch connected to the clamps 6Cj-4Cj includes a coil group 17 and oppositely with it a group 21. The second branch connected to the clamps 6C-4C includes a coil group 10 and oppositely with it a group 14. The third branch attached to the clamps 6Cj-4Cj, coil group 2 is included and opposite to it is group 19. In the fourth branch attached to the clamps, coil group 16 is included and oppositely to it is group 12. Fifth branch connected to clamps 6C, 4c , the coil group 20 is turned on and heading against it is groups 4 and 15. In the sixth branch, The coil group 13 is connected to the clamps 6C, -4C, and the group is opposite to it and 18. The seventh branch connected to the 6C2-4C terminals is the coil group 9 and the group 5 opposite it. The eighth branch attached to the clamps , the coil group 6 is turned on and heading against it is groups 1 and 11. The ninth branch is connected to the 6Cj-4C3 clamps, the coil group 3 is turned on and the head 7 is heading with it.

The conclusions of the branches located from the ends of the named counter-included reel groups are taken as the beginnings of the branches, and from the side of the beginnings of the reel groups mentioned above, at the ends of the branches. The winding leads are formed by connecting together the branch leads as follows: from groups 3, 10 and 17 to 6C, from groups 5, 12 and 19 to 6Cj, from groups 4, 11 and 18 to 6C 1, from groups 9, 14 and 15-4C ,, from groups 1, 16 and 21 - 40, from groups 2, 7 and 8 - 4C ,.

When power is connected to terminals 6C 6C ,, 6C 5 and free terminals

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5 0 5

0

five

0

five

0

five

The 4Cj, 4C, 4Cj winding creates a rotating magnetic field with the number of poles equal to six. When power is connected to pins 4C, 4C, 4Cz, the winding creates a rotating magnetic field with a number of poles equal to four. The conclusions of 6C,, CS, 6C, while free. With both numbers of poles, the winding forms a star connection with three parallel branches.

The winding improves the use of active materials by fully utilizing all the branches for both numbers of poles (in the known winding with a complex connection in a triangle, the three branches are largely underused). The equalization currents in this winding are insignificant, since the difference MDS of the parallel branches is less than 2%.

Claims (1)

Invention Formula A three-phase pole-switchable winding with a ratio of the numbers of the poles 2P, containing coils combined into coil groups, forming nine branches with six leads, is made with a number of coils that are multiples of 54 distributed among the coil groups with sequence numbers 1-21 in accordance with a number : К, 2К, 2К, К, 4К, 4К, 4К, К, 2К, 2К, К, 4К, 4К, 4К, К, 2К, 2К, К, 4К, 4К, 4К, with coil groups included in each branch with the following serial numbers: first branch - 17, 21, second branch - 10, 14, third branch - 19, 2, fourth branch - 12, 16, nth branch - 15, 20, 4, more that branch - 8, 13, 18, the seventh branch - 5, 9, the eighth branch - 1, 6, 11, the virgin branch - 3, 7, with the coil groups with the numbers 21, 14, 19, 12, 15, 4, 8, 18, 5, 1, 11, 7 are connected in series to other coil groups of the respective branches, characterized in that, in order to improve the use of active materials for polarity P, one winding lead is made from the ends of the ninth, first connected together and the second branch, the second winding pin - from the ends of the seventh, third and fourth branches, the third winding pin - from the ends of the eighth, fifth, and sixth branches, for lusennosti P {one the output winding is made from the third, sixth and nineth branches joined together; the second winding output is from the first, fourth and eighth branches, the third winding output is from the beginnings of the second, nth and seventh branches, where Z is the number of windings1G-2 coils ki, 54 Central Bank positive number. 9 rs rs p l ,