CN202696320U - Trapezoidal coil for shortening end length of motor stator winding - Google Patents
Trapezoidal coil for shortening end length of motor stator winding Download PDFInfo
- Publication number
- CN202696320U CN202696320U CN2012203110974U CN201220311097U CN202696320U CN 202696320 U CN202696320 U CN 202696320U CN 2012203110974 U CN2012203110974 U CN 2012203110974U CN 201220311097 U CN201220311097 U CN 201220311097U CN 202696320 U CN202696320 U CN 202696320U
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- coil
- trapezoidal
- trapezoidal coil
- stator winding
- motor stator
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Abstract
The utility model discloses a trapezoidal coil for shortening the end length of a motor stator winding. The trapezoidal coil is characterized in that the trapezoidal coil includes a coil end, a trapezoidal coil short edge, and a trapezoidal coil short edge, wherein both ends of the coil end are respectively connected with the trapezoidal coil short edge and the trapezoidal coil short edge; and the coil end includes an arc of the coil end, and an arc of the coil linear section. The trapezoidal coil provided by the utility model can reduce copper consumption of the motor, and has the advantages of good heat dissipation, low loss, high efficiency and so on.
Description
Technical field
The utility model relates to a kind of trapezoidal coil that shortens the motor stator winding tip lengths, belongs to electric machine structure
Technical field.
Background technology
Winding is the important component part of electric machine structure, it also is the cardiac component of motor, the electromotive force of motor is all relevant with the formation of winding with the magnetomotive force characteristic, winding is comprised of coil, so the queueing discipline of research coil and connected mode are to satisfy electric power system to requirements such as electromotive force and magnetomotive waveforms amplitude and symmetries.
The loose embedding winding coil structure shape of the bilayer of at present general middle and small motor stator winding mainly contains shuttle coil and partial arc shape coil.
Shuttle coil, as shown in Figure 1, the straight line L1 that comprises the first coil, be the span Y1 of the first coil between the straight line L1 of two the first coils, the junction of the straight line L1 of the first end winding h1 and the first coil is the first coil straight line portion circular arc, the first coil straight line portion circular arc place radius of a circle is r1, the first end winding circular arc place radius of a circle is R1, the end winding angle is α, and the first coil width is c1, arranges easily during the rule of its end, principal mode for general scattering set coil, double-layer overlapped winding coil shape is mainly fusiformis, and a part of individual layer chain type winding coil shape can be fusiformis, and the dc micro-motor armature coil also can be fusiformis.
The circular arc coil, as shown in Figure 2, the straight line L2 that comprises the second coil, be the span Y2 of the second coil between the straight line L2 of two the second coils, the second end winding circular arc place radius of a circle on the second end winding h2 is R2, and the second coil width is c2, and its end has the larger characteristics of oval shape coil plasticity, also have the characteristics that can suitably reduce end winding length, be applicable to the coarse pitch coil.Individual layer or double-layer concentric coil shape are mainly circular arc, and a part of single two layer winding coil and the larger single layer winding coil of pitch also can be circular arc.
Its shortcoming of circular arc coil is that the end is more with copper, and each coil dimension was different during homopolarity was organized mutually, makes complicated.Shuttle coil is generally double-layer overlapped winding scattering set coil, and can select magnetic potential and the potential waveform of favourable short distance to improve motor, make motor performance better, end arranged cells is convenient, and coil dimension is identical, is convenient to make, but its tip lengths is longer, do not meet the designing requirement of high efficiency motor special, so now release a kind of advantage that shuttle coil is namely arranged, can shorten again a kind of novel trapezoidal coil of end winding length.
Summary of the invention
The purpose of this utility model is to solve motor high and high problem of bearing temperature of winding temperature rise when ambient temperature height and coefficient of utilization load running, and a kind of trapezoidal coil of saving the shortening motor stator winding tip lengths that copper consumption, good heat dissipation, loss are low, efficient is high of motor is provided.
In order to achieve the above object, the utility model provides a kind of trapezoidal coil that shortens the motor stator winding tip lengths, it is characterized in that, comprise the long limit of end winding, trapezoidal coil minor face and trapezoidal coil, the two ends of end winding are connected the limit with the trapezoidal coil minor face with trapezoidal coil respectively and are connected, and described end winding comprises end winding circular arc and coil straight line portion circular arc.
Preferably, the length range of described end winding is 45～130mm.
Preferably, the radius of described end winding circular arc is 30～90mm.
Preferably, the radius of described coil straight line portion circular arc is 10～20mm.
Preferably, the length of described trapezoidal coil minor face is the length of stator core and the length sum that coil stretches out iron core.
Preferably, the length on the long limit of described trapezoidal coil is the length that the difference of the length of the length of 2 times of end windings and end winding circular arc adds the trapezoidal coil minor face.
Preferably, the distance between the long limit of described trapezoidal coil minor face and trapezoidal coil is the span of coil, and the span of coil increases coil width and is the actual stride of design.
The shortcomings such as coil design of the present utility model is shaped as trapezoidal shape, compares and existing coil, and the trapezoidal coil end can obviously shorten, and has avoided the non-telescope amount in rectangular coil end, and wire insertion technology is poor are easy to rule; Also avoided the circular arc end winding more with copper, each coil dimension was different during homopolarity was organized mutually, made the problems such as complicated; And with traditional shuttle coil relatively, can effectively shorten stator winding end (monolateral) length and be: 10～60mm, end, both sides overall length can shorten to 20～120mm; The utility model is also on the basis of reducing the motor copper consumption, do not affect motor performance, winding overhang length is shorter, arrangement is more neat, more be conducive to the electric motor winding end ventilation and heat, reduce the wastage, raise the efficiency, can increase simultaneously the axial distance between stator winding end and bearing outside diameter, reduce the mutual heat conduction impact of winding and bearing, solved motor high and high difficult problem of bearing temperature of winding temperature rise when ambient temperature height and coefficient of utilization load running.
Description of drawings
Fig. 1 is the structural representation of shuttle coil;
Fig. 2 is the structural representation of circular arc coil;
Fig. 3 is a kind of structural representation that shortens the trapezoidal coil of motor stator winding tip lengths.
Description of reference numerals
Y1 is the span of the first coil, and L1 is the straight line of the first coil, and h1 is the first end winding, R1 is the first end winding circular arc place radius of a circle, r1 is the first coil straight line portion circular arc place radius of a circle, and α is the end winding angle, and c1 is the first coil width;
Y2 is the span of the second coil, and L2 is the straight line of the second coil, and h2 is the second end winding, and R2 is the second end winding circular arc place radius of a circle, and c2 is the second coil width;
Y3 is the span of tertiary coil, and h3 is the tertiary coil end, and R3 is circular arc place, tertiary coil end radius of a circle, r3 is tertiary coil straight line portion circular arc place radius of a circle, c3 is the tertiary coil width, and L3a is the 3rd trapezoidal coil minor face, and L3b is the long limit of the 3rd trapezoidal coil.
Embodiment
For the utility model is become apparent, hereby with preferred embodiment, and cooperate accompanying drawing to be described in detail below.
Embodiment 1
As shown in Figure 3, be a kind of structural representation that shortens the trapezoidal coil of motor stator winding tip lengths.The utility model is a kind of trapezoidal coil that shortens the motor stator winding tip lengths, comprise the long limit L3b of tertiary coil end h3, the 3rd trapezoidal coil minor face L3a and the 3rd trapezoidal coil, the two ends of tertiary coil end h3 are connected with the long limit L3b of the 3rd trapezoidal coil with the 3rd trapezoidal coil minor face L3a respectively, and tertiary coil end h3 comprises tertiary coil end circular arc and tertiary coil straight line portion circular arc.The altitude range of tertiary coil end h3 is 45～130mm, circular arc place, tertiary coil end radius of a circle R3 scope is 30～90mm, tertiary coil straight line portion circular arc place radius of a circle r3 scope is 10～20mm, and the length of the 3rd trapezoidal coil minor face L3a is that length and the coil of stator core stretches out length sum unshakable in one's determination.The length of the long limit L3b of the 3rd trapezoidal coil is the length that the difference of the height of 2 times of tertiary coil end h3 and circular arc place, tertiary coil end radius of a circle R3 adds the 3rd trapezoidal coil minor face L3a.Distance between the long limit L3b of the 3rd trapezoidal coil minor face L3a and the 3rd trapezoidal coil is the span Y3 of tertiary coil, and the span Y3 of tertiary coil increases tertiary coil width c3 and is the actual stride of design.
The utility model provides a kind of trapezoidal coil that shortens the motor stator winding tip lengths, is the loose embedding lap winding loop construction shape design of a kind of bilayer.The trapezoidal coil larger to power of motor, that span is larger, it is maximum that it shortens the winding overhang length value, is applicable to the 2P of winding core end length anxiety, the compressor electric motor of 4P relatively high power.
The utility model not only can shorten the tip lengths of motor stator winding, and can improve efficient and the performance of motor, is a kind of coil form of well loose embedding double-layer overlapped winding, will produce larger economic benefit.
The utility model provides a kind of trapezoidal coil that shortens the motor stator winding tip lengths, and step realizes by the following technical programs:
A) at first according to the electromagnetic scheme of design of electrical motor, trapezoidal coil is carried out the planform design, as shown in Figure 3: 1. determine the span Y3 of coil, the span Y3 of coil cuts coil width c3 for the actual stride Y of design; 2. determine end winding circular arc place radius of a circle R3, generally get: 30～90mm, wherein span Y3 the greater of tertiary coil is got higher value; 3. determine the height of tertiary coil end h3, generally get: 45～130mm; 4. determine the long limit of the 3rd trapezoidal coil minor face L3a length and the 3rd trapezoidal coil L3b length, the 3rd trapezoidal coil minor face L3a length is that stator core length is stretched out straight length sum unshakable in one's determination with coil, and the long limit of the 3rd trapezoidal coil L3b length equals the height of 2 times of tertiary coil end h3 and the difference of circular arc place, tertiary coil end radius of a circle R3 adds the 3rd trapezoidal coil minor face L3a length; 5. determine tertiary coil straight line portion circular arc place radius of a circle r3, generally get: 10～20mm.
B) make winding former by the trapezoidal coil size of design, carry out the coiling of coil, the wire winding of trapezoidal coil and traditional shuttle coil are basic identical.
C) the trapezoidal coil rule that winds is in stator coring groove, the 3rd trapezoidal coil minor face L3a is generally the limit, upper strata of rule, the long limit L3b of the 3rd trapezoidal coil is generally the lower floor limit of rule, other link and traditional shuttle coil wire insertion technology are basic identical, rule carries out shaping and colligation to its winding overhang after finishing.
In sum, the utility model is by the particular design to coil winding of motor stator, reached obvious and can shorten the winding coil tip lengths, obviously increased the axial distance between end winding and bearing outside diameter, reduced the mutual heat conduction impact of winding and bearing, the ventilation and heat that is conducive to the motor winding overhang, reduce the wastage, improve the efficient of motor, solved because of the ambient temperature height, the 2P that the inner volume anxiety that high this two long-standing the topic of the motor winding temperature rise height of coefficient of utilization load and bearing temperature and motor increase-volume cause is arranged, the motor of 4P relatively high power has promoted the market competitiveness of compressor electric motor.
Claims (7)
1. trapezoidal coil that shortens the motor stator winding tip lengths, it is characterized in that, comprise the long limit (L3b) of tertiary coil end (h3), the 3rd trapezoidal coil minor face (L3a) and the 3rd trapezoidal coil, the two ends of tertiary coil end (h3) are connected with the long limit of the 3rd trapezoidal coil (L3b) with the 3rd trapezoidal coil minor face (L3a) respectively, and described tertiary coil end (h3) comprises tertiary coil end circular arc and tertiary coil straight line portion circular arc.
2. a kind of trapezoidal coil that shortens the motor stator winding tip lengths as claimed in claim 1 is characterized in that, the altitude range of described tertiary coil end (h3) is 45～130mm.
3. a kind of trapezoidal coil that shortens the motor stator winding tip lengths as claimed in claim 1 is characterized in that, described tertiary coil end circular arc place radius of a circle (R3) scope is 30～90mm.
4. a kind of trapezoidal coil that shortens the motor stator winding tip lengths as claimed in claim 1 is characterized in that, described tertiary coil straight line portion circular arc place radius of a circle (r3) scope is 10～20mm.
5. a kind of trapezoidal coil that shortens the motor stator winding tip lengths as claimed in claim 1 is characterized in that, the length of described the 3rd trapezoidal coil minor face (L3a) is that length and the coil of stator core stretches out length sum unshakable in one's determination.
6. a kind of trapezoidal coil that shortens the motor stator winding tip lengths as claimed in claim 1, it is characterized in that the length on the long limit of described the 3rd trapezoidal coil (L3b) is the length that the difference of the height of 2 times of tertiary coil ends (h3) and circular arc place, tertiary coil end radius of a circle (R3) adds the 3rd trapezoidal coil minor face (L3a).
7. a kind of trapezoidal coil that shortens the motor stator winding tip lengths as claimed in claim 1, it is characterized in that, distance between the long limit of described the 3rd trapezoidal coil minor face (L3a) and the 3rd trapezoidal coil (L3b) is the span (Y3) of tertiary coil, and the span of tertiary coil (Y3) increases tertiary coil width (c3) and is the actual stride of design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203110974U CN202696320U (en) | 2012-06-29 | 2012-06-29 | Trapezoidal coil for shortening end length of motor stator winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203110974U CN202696320U (en) | 2012-06-29 | 2012-06-29 | Trapezoidal coil for shortening end length of motor stator winding |
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| Publication Number | Publication Date |
|---|---|
| CN202696320U true CN202696320U (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203110974U Expired - Lifetime CN202696320U (en) | 2012-06-29 | 2012-06-29 | Trapezoidal coil for shortening end length of motor stator winding |
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| CN (1) | CN202696320U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716764A (en) * | 2015-03-19 | 2015-06-17 | Abb技术有限公司 | Winding for motor rotor, rotor using the same and motor |
| CN107681800A (en) * | 2017-10-31 | 2018-02-09 | 上海电气风电集团有限公司 | A kind of machine winding |
| CN108696068A (en) * | 2018-06-01 | 2018-10-23 | 邢帅帅 | A kind of formed coil section material technique |
-
2012
- 2012-06-29 CN CN2012203110974U patent/CN202696320U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716764A (en) * | 2015-03-19 | 2015-06-17 | Abb技术有限公司 | Winding for motor rotor, rotor using the same and motor |
| CN104716764B (en) * | 2015-03-19 | 2018-03-27 | Abb技术有限公司 | For rotor winding and use its rotor and motor |
| CN107681800A (en) * | 2017-10-31 | 2018-02-09 | 上海电气风电集团有限公司 | A kind of machine winding |
| CN108696068A (en) * | 2018-06-01 | 2018-10-23 | 邢帅帅 | A kind of formed coil section material technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |