CN103427573A - Connection method of three multi-path triangular connection lead wires of three-phase asynchronous motor - Google Patents

Abstract

The invention discloses a connection method of three multi-path triangular connection lead wires of a three-phase asynchronous motor. The number of pole-pairs is set as p, the number of parallel circuits is set as a, the number of coils is set as Q, the number of coil groups is set as u, the number of coils in each group is set as x, the pole pitch is set as tau, and the pitch is set as y; the a satisfies the equation that a=2*p, wherein the p satisfies the equation that p=1, 2, 3...; after coil inserting of the motor is finished, the fact that a certain trough from which two outgoing line ends are led out is a first trough is presumed, a stator is divided into p sector-shaped areas from the first trough in the counter-clockwise direction, wherein each sector-shaped area comprises 12 outgoing line ends, the former 4 line ends in the p areas are connected in parallel in the counter-clockwise direction, the A-phase lead wire is led out, and the B-phase lead wire and the C-phase lead wire are led out in the same method. The connection method is applicable to the three-phase asynchronous motor, achieves simple and convenient wire connection, does not need auxiliary instruments, saves materials, allows the winding head of the stator to be beautiful, and achieves high labor productivity.

Description

The mode of connection of three lead-in wires of threephase asynchronous multichannel triangle joint

Technical field

The invention belongs to threephase asynchronous wiring technique field, relate to the mode of connection of three lead-in wires of a kind of threephase asynchronous triangle joint, be specifically related to the mode of connection of three lead-in wires of a kind of threephase asynchronous multichannel triangle joint.

Background technology

During the wiring of three of threephase asynchronous multichannel triangle joints lead-in wire, three phase windings repeatedly intersect, and during line, also need the instrument such as megohmmeter as supplementary means, not only waste material, and the stator winding terminals are not attractive in appearance, and labor productivity is low.

Summary of the invention

The mode of connection that the purpose of this invention is to provide three lead-in wires of a kind of threephase asynchronous multichannel triangle joint, while solving three lead-in wire wiring of existing threephase asynchronous multichannel triangle joint, three phase windings repeatedly intersect, need complete wiring by instruments such as megohmmeters, physical cabling is difficulty comparatively, and the end of a thread is reserved long, the waste material, the stator winding terminals are not attractive in appearance, the problem that labor productivity is low.

The technical solution adopted in the present invention is, the mode of connection of three lead-in wires of threephase asynchronous multichannel triangle joint is specifically implemented according to following steps:

If the motor number of pole-pairs is p, way in parallel is a, and the coil number is Q, and the coil groups number is u, and every group of coil number is x, and pole span is τ, and pitch is y; Make a=2p, p=1,2,3...; After motor inserting-coil completes, suppose that certain groove of drawing two terminals is No. 1 groove, by counter clockwise direction, stator is divided into to p sector region since No. 1 groove, wherein, each sector region has 12 terminals, by counterclockwise, by front 4 the end of a thread parallel connections in this p zone, draws the A phase terminal, after the same method, take out B phase and C phase terminal.

Characteristics of the present invention also are, motor wherein meets the following conditions: two layer winding, and triangle joint, number of poles equals the parallel branch number, lifts one's head for three.

The invention has the beneficial effects as follows, avoid three phase windings repeatedly to intersect, without by instruments such as megohmmeters, completing wiring, the physical cabling process is short and sweet; The end of a thread is reserved short, saves material; The stator winding terminal portions is attractive in appearance, and labor productivity is high.

The accompanying drawing explanation

Fig. 1 is that motor number of pole-pairs and sector region are divided schematic diagram; Wherein (a) is the motor sector region division schematic diagram of p=1; (b) be the motor sector region division schematic diagram of p=2; (c) be the motor sector region division schematic diagram of p=3; (d) be the motor sector region division schematic diagram of p=n;

Fig. 2 is 24 groove 2 utmost point 2 road triangle parallel-connected induction motors winding connection expanded views;

Fig. 3 is 36 groove 4 utmost point 4 road triangle parallel-connected induction motors winding connection expanded views;

Fig. 4 is 72 groove 6 utmost point 6 road triangle winding electric machine wiring in parallel expanded view.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.

Motor according to the invention must meet the following conditions:

1, two layer winding;

2, triangle joint;

3, number of poles equals the parallel branch number;

4, lift one's head for three.

The mode of connection of three lead-in wires of threephase asynchronous multichannel triangle joint of the present invention, specifically according to following steps, implement: establishing this type of motor number of pole-pairs is p, and way in parallel is a, the coil number is Q, and the coil groups number is u, and every group of coil number is x, pole span is τ, and pitch is y.Make a=2p(p=1,2,3...).After motor inserting-coil completes, suppose that certain groove of drawing two terminals is No. 1 groove, by counter clockwise direction, stator is divided into to p sector region since No. 1 groove, as shown in Figure 1 (d) shows.Wherein, each sector region has 12 terminals, by counterclockwise, by front 4 the end of a thread parallel connections in this p zone, draws the A phase.After the same method, by taking out B phase and C phase terminal.

Said method, when meeting the motor wiring of this type of condition, has been avoided existing methodical repeatedly crossover phenomenon, and wiring is auxiliary without instruments such as megohmmeters, and the wiring process is short and sweet, and the end of a thread is reserved short, saves material, and winding overhang is attractive in appearance, and labor productivity is high.

Embodiment 1

24 groove 2 utmost point 2 road triangle parallel-connected induction motorses, a=2p=2, Q=24, u=6, x=4, pole span τ=12, pitch y=9.Because p=1 after complete line, supposes that certain groove of drawing two the end of a thread is No. 1 groove under motor, by counter clockwise direction, circumference is divided into to territory, 1 sector (being circumferential area) since No. 1 groove,

As shown in Fig. 1 (a).Front four parallel connections of 12 terminals of whole circumferential area are drawn to the A phase, by taking out B phase and C phase terminal, as shown in Figure 2.

Embodiment 2

36 groove 4 utmost point 4 road triangle parallel-connected induction motorses, a=2p=4, Q=36, u=12, x=3, pole span τ=9, pitch y=7.Because p=2 after complete line, supposes that certain groove of drawing two the end of a thread is No. 1 groove under motor, by counter clockwise direction, circumference is divided into to territory, 2 sectors (being 1/2 circumferential area) since No. 1 groove, as shown in Fig. 1 (b).Front four appearance parallel connections of two sector regions are drawn to the A phase, by taking out B phase and C phase terminal, as shown in Figure 3.

Embodiment 3

72 groove 6 utmost point 6 road triangle parallel-connected induction motorses, a=2p=6, Q=72, u=18, x=4, pole span τ=9, pitch y=11.Because p=3 after complete line, supposes that certain groove of drawing two the end of a thread is No. 1 groove under motor, by counter clockwise direction, circumference is divided into to 3 sector regions (being 1/3 circumferential area) since No. 1 groove, as shown in Fig. 1 (c).Front four terminal parallel connections of 3 sector regions are drawn to the A phase, by taking out B phase and C phase terminal, as shown in Figure 4.

Claims (2)

1. the mode of connection of three lead-in wires of threephase asynchronous multichannel triangle joint, is characterized in that, specifically according to following steps, implements:

If the motor number of pole-pairs is p, way in parallel is a, and the coil number is Q, and the coil groups number is u, and every group of coil number is x, and pole span is τ, and pitch is y; Make a=2p, p=1,2,3...; After motor inserting-coil completes, suppose that certain groove of drawing two terminals is No. 1 groove, by counter clockwise direction, stator is divided into to p sector region since No. 1 groove, wherein, each sector region has 12 terminals, by counterclockwise, by front 4 the end of a thread parallel connections in this p zone, draws the A phase terminal, after the same method, take out B phase and C phase terminal.

2. the mode of connection of three lead-in wires of threephase asynchronous multichannel triangle joint according to claim 1, is characterized in that, described motor meets the following conditions: two layer winding, and triangle joint, number of poles equals the parallel branch number, lifts one's head for three.

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