SU1372510A1 - Three-phase pole-switchable winding - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to improve the use of active materials and reduce the labor intensity of manufacturing. The winding consists of twelve coil groups with numbers from 37 to 48, laid in thirty six stator slots with numbers from 1 to 36. Six coil groups with numbers 37, 39, 41, 43, 45, 47 and the beginnings of external coils in grooves with numbers 36, 6, 12, 18, 24, 30, respectively, are formed by concentric coils consisting of one coil with a pitch and one coil with a pitch. There is a scheme for switching coil groups into each half-phase of each phase. The winding has a high winding ratio. 1 il. "F J f S i7 8 (L to to e

Description

1 13

The invention relates to pole-selectable windings of electric machines of alternating current and can be used in electrical engineering in the manufacture and installation of stator windings asynchronous electric motors.

The purpose of the invention is to improve the use of active materials and reduce the labor intensity of manufacturing the winding.

The drawing shows the unfolded winding circuit, made in 36 slots of the stator with numbers from 1 to 36 and the ratio of the numbers of poles 2P: 2P 14: 4.

The coil includes 12 coil groups with serial numbers from 37 to 48, of which six coil groups with serial numbers 37, 39,

41,43, 45, 47 and the beginnings of external coils in grooves with numbers 36, 6, 12, 18, 24, 30, respectively, are formed by concentric coils connecting from one coil with a pitch

 and one coil with a pitch, and six coil groups with serial numbers 38, 40, 42, 44, 46, 48 and the beginning of the coils in the slots with n. 35, 5, 11, 17, 23, 29 respectively, are formed by coils with a pitch, and in the first half-phase of the first phase with clips 14C, -4C, coil groups with serial numbers 41 48 are included, in the second half-phase of the first phase with clips 4C, -C, coil groups with order numbers 47 are included

42, in the first half-phase of the second phase

with the clips 14Cj-4Cj, the coil groups with serial numbers 45, 40 are included, the second half-phase of the second phase with clips includes coil groups with serial numbers 39, 46, the first half-phase of the third phase with clips includes coil groups with serial numbers 37, 44, in the second half-phase of the third phase with clips included

coil groups with sequence numbers 43, 38, while coil groups with sequence numbers 38, 39, 42, 43, 46, 47 are included in opposite directions with respect to the other coil groups within the phases.

The winding contains nine outputs (14С ,, 14С ,, 14С ,, 4С ,, 4С, 40 ,, С ,, Cj, С), which provides switching according to the circuit. Under the scheme

.

Q

five

0

five

0

Q,

0

five

102

The key Y / YY winding can have six pins. With the 14C, 14C, 14Sz clips and a symmetrical mains supply, 4C, 4C, 4CJ free clips and C, Su, Cd clips closed between them, a rotating magnetic field with the number of poles of fourteen occurs. The switching circuit is a star.

When the 4C ,, 4Cj, 4Cj terminals are connected to a symmetrical mains supply and the three terminals are closed in 14C, -C, -4Cj, 14Cj-C -4Cj, 4C, respectively, a rotating magnetic field with the number of pallus is four. The switching circuit is a double triangle.

The magnitude of the winding coefficients of the proposed winding is K 0.6787; , 9599; K 0.82.

In a constructive respect, the winding is made single-layer, consists of 12 coil groups and can be laid on modern storobotomotochnogo equipment, as its design meets all the requirements placed on the windings for mechanized laying. The number of stacking steps is two.

The proposed winding surpasses the known use of active materials and can be used in electrical engineering in the manufacture and installation of the stator windings of two-speed asynchronous motors.

Claims (1)

Invention Formula A three-phase pole-switching winding with a ratio of pole numbers, made in 36 slots of the stator, numbered from 1 to 36, containing coils connected in series, forming phases separated into two half-phases, provided with leads from the beginning and ends of the phases and points of the half-phases, different from By the fact that, in order to improve the use of active materials and reduce the labor intensity of manufacturing, the winding is made of a single layer of twelve coil groups with serial numbers from 37 to 48, of which six coil groups with E numbers 37, 39, 41, 43, 45, 47 and beginnings external coils in the slots with numbers 36,6,12,18, 3137 24, 30 are respectively formed by concentric coils consisting of one coil with a pitch and one coil with a pitch, and six coil groups with sequence numbers 38, 40, 42, 44, 46, 48 and the beginning of the coils in grooves 35, 5 , 11, 17, 23, 29, respectively, are formed by coils with a pitch, with the first half phase of the first phase with clamps 14C, -4c including coil groups with sequence numbers 41, 48, the second half of the first phase with clamps C including coil groups with - serial numbers 47, 42, in the first half-phase of the second phase with clips 14C, 4C, coil groups with serial numbers 45, 40 are included, the second half-phase of the second phase with clips 4C, - C, coil groups with serial numbers 39, 46 are included, the first half-phase of the third phase with clips 14Cj-4C includes coil groups with sequence numbers 37, 44, the second half phase of the third phase with 4C-C clamps includes coil groups with sequence numbers 43, 38, while the coil groups with sequence numbers 38, 39, 42, 43, 46, 47 are included in relation to the other coil groups within the phases.