SU1265927A1 - Three-phase pole-changeable winding - Google Patents

Abstract

The invention relates to electrical engineering and can be used to create multi-speed electric motors. The purpose of the invention is to enhance the functionality by obtaining the ratio of the numbers of poles 8:12. The winding contains in phase six coil groups (CG), whose numbers are determined in accordance with the numerical series 6i-5, 6i-3, 6i-1, 6i + 4, 6i + 6, 6i + 8 with conclusions from the beginnings of CG 6i- 5, 6i-3, 6i-1. The end of the CG 6i-5 is connected with the beginning of the CG 6i + 4, the end of the 61-3 - with the beginning of 61 + 6, the end of the 61-1 - with the beginning, the ends of the CG 61 + 4, 61 + 6, 61 + 8 are combined at each phase, where 1 is the phase number. 6 Il.

Description

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The invention relates to electrical engineering and can be used to create multi-speed electric motors. The purpose of the invention is to enhance the functionality of the winding by obtaining the ratio of the numbers of poles 8:12. FIG. 1 and 2 show diagrams of interphase connections and phases among themselves at different winding poles; in fig. 3 and 4 - the distribution of the sides of the coils and the currents in them (the sides of the coils of phase A are indicated by a square, the phases C - by a circle, the phases B - by a triangle) by the example of a motor with 36 slots on the stator; in fig. 5 and 6 are the curves of the magnetizing forces of the winding for the point in time when the current in phase A has a maximum positive value. The winding (figs. 1 and 2) contains eighteen coil groups 1-18 and nine conclusions 19-27. In each phase, the end of the 6i-5 coil group is connected with the beginning of 61 + 4 coil group, the end of 6i-3 - with the beginning of 6i-l-6, the end of 61-1 - with the beginning of 61 + 8, the ends of 61 + 4, 61 + 6 and 6i + 8 coil groups are joined to zero points in each phase, the conclusions are taken from the beginnings of 61-5, 61-3, 61-1 coil groups. If the voltage is applied to pins 20, 23 and 26, in the connection of pins 21 from 22, 24 from 25 and 27 from 19 (Fig. 1), we get eight poles (Fig. 4 and 6). If eg / / / /

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Claims (1)

5W - 12/4 to submit to the combined pins 19, 22, 25; 20, 23, 26 and 21, 24, 27 (Fig. 2), we get twelve poles (Fig. 3 and 5). With a step of 3, the values of the winding factors are as follows: Ko6i2 / Ko6.8 0.866 / 0.77. The ratio of induction in the air gap Bi2 / B8 1 / 0,4. The positive properties of the pole-winding winding are simple winding and laying-and-reel groups and a small number of leads. When the number of grooves on the stator 54 and 72, the coil groups have respectively 3 and 4 coils. The invention has a three-phase pole-switching winding containing in each phase six coil groups, the numbers of which are determined in accordance with the numerical series of ™ from the beginnings of the coil groups 61-5, 61-3, 61-1, characterized in that expanding functionality by obtaining the ratio of the numbers of poles 8:12, the end of the coil group 6i-5 is connected with the beginning of the coil group 61 + 4, the end of 61-3 - with the beginning of 61 + b, 61-1 with the beginning of 61 + 8, the ends coil groups 61 + 4, 61 + 6, 61 + 8 are combined into zero points in each phase, where 1 is the phase number (1 1, 2, 3). 02/7 0 // 1618 2 Xh ./f x / n 025 T iVCH68 x hch Xs / L x 25 27 Riga.1 i5JO12Jl V / / / x 02 r023 X X / N r rS 0 5 CHA 18 J6  H a U / g.2 TI