CN204089397U

CN204089397U - 40 pole 42 groove traction machine stators

Info

Publication number: CN204089397U
Application number: CN201420443289.XU
Authority: CN
Inventors: 梁昌勇
Original assignee: GUANGDONG HEPU POWER TECHNOLOGY CO LTD
Current assignee: Guangdong Universal Power Ltd By Share Ltd; Hepu Power Co ltd
Priority date: 2014-08-07
Filing date: 2014-08-07
Publication date: 2015-01-07
Anticipated expiration: 2024-08-07

Abstract

40 pole 42 groove traction machine stators, it is characterized in that p-m rotor adopts 40 poles, traction machine stator winding pitch y=1, stator core is for be circumferentially distributed with 42 grooves, every phase winding has 14 coils, the three-phase windings of A phase, C phase, B phase totally 42 coils divides and is wrapped on stator core 42 teeth, the head end of each phase winding and another phase winding head end are in 120 degree of electrical degrees, A phase head end and the same groove of C phase tail end of above-mentioned three-phase windings, B phase head end and the same groove of A phase tail end, C phase head end and the same groove of B phase tail end.Compared with the prior art the utility model, has stator winding end short, and winding can not be mutually overlapping, and copper loss is little, low cost of manufacture, for machine room, is applicable to the advantage of narrow hoistway space application.

Description

40 pole 42 groove traction machine stators

Technical field

The utility model relates to a kind of motor stator, refers in particular to permanent magnetic synchronous traction machine stator.

Background technology

Current magnetic-synchro traction machine adopts 20 poles usually, and corresponding groove number is generally: 45 grooves, 72 grooves, 90 grooves, for 45 groove structures, and winding pitch y=2,72 groove structures, winding pitch y=4,90 groove structures, winding pitch y=5.Obviously, these winding pitch y > 1, there is winding overhang mutually overlapping, the problems such as make stator winding end long, copper loss is large, and manufacturing cost is high, more seriously because stator end is oversize, traction machine axial dimension just cannot reduce, and for machine room, narrow hoistway space application is very difficult.

Summary of the invention

It is short that the purpose of this utility model is to provide stator winding end, and winding can not be mutually overlapping, and copper loss is little, low cost of manufacture, for machine room, is applicable to 40 pole 42 groove traction machine stators of narrow hoistway space application.

The utility model object is achieved in that p-m rotor adopts 40 poles, traction machine stator winding pitch y=1, stator core is for be circumferentially distributed with 42 grooves, every phase stator winding has 14 coils, the threephase stator winding of A phase, C phase, B phase totally 42 coils is wrapped on stator core 42 teeth respectively, the head end of each phase stator winding is in 120 degree of electrical degrees with another phase stator winding head end, the first coil of A phase and the same groove of C phase buttock line circle of above-mentioned threephase stator winding, the first coil of B phase and the same groove of A phase buttock line circle, the first coil of C phase and the same groove of B phase buttock line circle.

Every phase stator winding composition two-way is in parallel or form two-way series connection.

Due to number of poles 2p=40, embodying electrical degree between adjacent two grooves is: α=20 × 360 ÷ 42=171.43

advantage

The 40 pole 42 groove traction machine stators that the present invention proposes, have the following advantages:

1 due to rotor number of poles be 40, number of stator slots is 42, pole span τ=Z/2p=42/40=1.05 groove, short distance angle β=α (τ-y)=171.43 (1.05-1)=8.57, chording factor ky=cos(8.57/2)=0.9972, obviously, chording factor is close to 1.

2 each coils are around on a tooth, i.e. pitch y=1, winding can not be mutually overlapping, and winding overhang size is little, and copper loss is little, low cost of manufacture.

3 winding overhang sizes are little, and permanent magnetic synchronous traction machine axial dimension can be compressed, and make traction machine become possibility for the machine room of narrow hoistway space.

4 due to traction machine rotating speed low, number of poles 40 can realize the frequency that low speed just reaches higher, improves the electric property of traction machine

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is astrology figure of the present utility model

Fig. 3 is the winding diagram that the utility model adopts two-way parallel connection

Fig. 4 is the winding diagram that the utility model adopts two-way series connection

Embodiment

Below in conjunction with drawings and Examples, the utility model is further described:

As shown in Figure 1, 40 pole 42 groove permanent magnetic synchronous traction machine stators of the present utility model, be made up of stator winding r and stator core t, stator core is circumferentially distributed with 42 tooth q, every phase stator winding r has 14 coils, threephase stator winding totally 42 coils is wrapped on 42 teeth of stator core t respectively, and A phase stator winding r14 coil, respectively around the 1st of stator core t, 2, 3, 4, 5, 6, 7 and 22, 23, 24, 25, 26, 27, on 28 tooth q, B phase stator winding r14 coil, respectively around the 15th of stator core t, 16, 17, 18, 19, 20, 21 and 36, 37, 38, 39, 40, 41, on 42 tooth q, C phase stator winding r14 coil, respectively around the 8th of stator core t, 9, 10, 11, 12, 13, 14 and 29, 30, 31, 32, 33, 34, on 35 tooth q, Fig. 2 is the astrology figure of threephase stator winding, U, V, W threephase stator winding head end is in 120 degree of electrical degrees and arranges, the first coil of U phase stator winding and the same groove of V phase stator winding buttock line circle, the first coil of V phase stator winding and the same groove of W phase stator winding buttock line circle, the first coil of W phase stator winding and the same groove of U phase stator winding buttock line circle.

Due to number of poles 2p=40, between adjacent two grooves, electrical degree is: α=10 × 360 ÷ 21=171.43

The present embodiment can be that two-way stator winding is in parallel, sees Fig. 3, also can be two-way stator winding parallel connection series connection, see Fig. 4

The present embodiment not only can be used on the permanent magnetic synchronous traction machine of outer-rotor structure, also can be used on the permanent magnetic synchronous traction machine of inner rotor core.

Claims

1.40 pole 42 groove traction machine stators, its feature adopts 40 poles at p-m rotor, traction machine stator winding pitch y=1, stator core is for be circumferentially distributed with 42 grooves, every phase stator winding has 14 coils, the threephase stator winding of A phase, C phase, B phase totally 42 coils is wrapped on stator core 42 teeth respectively, the head end of each phase stator winding is in 120 degree of electrical degrees with another phase stator winding head end, the first coil of A phase and the same groove of C phase buttock line circle of above-mentioned threephase stator winding, the first coil of B phase and the same groove of A phase buttock line circle, the first coil of C phase and the same groove of B phase buttock line circle.

2. 40 pole 42 groove traction machine stators according to claim 1, is characterized in that every phase stator winding composition two-way is in parallel or form two-way series connection.