CN107370259A - Stator, motor, compressor and refrigeration plant - Google Patents
Stator, motor, compressor and refrigeration plant Download PDFInfo
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- CN107370259A CN107370259A CN201710724144.5A CN201710724144A CN107370259A CN 107370259 A CN107370259 A CN 107370259A CN 201710724144 A CN201710724144 A CN 201710724144A CN 107370259 A CN107370259 A CN 107370259A
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 10
- 238000004804 winding Methods 0.000 claims abstract description 523
- 239000010410 layer Substances 0.000 claims abstract description 247
- 239000002356 single layer Substances 0.000 claims abstract description 12
- 239000011162 core material Substances 0.000 abstract description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000000926 separation method Methods 0.000 description 12
- 239000003990 capacitor Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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Abstract
The invention discloses a kind of stator, motor, compressor and refrigeration plant, including stator core and coil windings, the stator core is provided with the N number of stator slot being evenly distributed, the coil windings include the first main winding being arranged symmetrically and the second main winding and the first auxiliary winding and the second auxiliary winding that are arranged symmetrically, first main winding and the second main winding include N1 layer main windings respectively, first auxiliary winding and the second auxiliary winding include N2 layer auxiliary winding coils respectively, every layer of main winding or every layer of auxiliary winding coil are in two stator slots, single layer coil is embedded with each stator slot, and meet：N=4 × (N1+N2), N2≤N1≤4.In the case where respectively symmetrically arranging, limit a stator slot has and only places single layer coil main winding and auxiliary winding in the present invention, and the utilization rate of stator core material is improved while realizing and reducing motor low order subharmonic, has saved production cost.
Description
Technical field
The present invention relates to Compressor Technology field, in particular it relates to a kind of stator, motor, compressor and refrigeration plant.
Background technology
It is non-adjustable that rotating speed because of reliable and function admirable is widely used in using the monophase machine of two pole winding structures
In the compressor of nodal pattern.In the prior art, it is standing to put at least one layer of main winding when the stator slot of above-mentioned monophase machine is more
Coil and one layer of auxiliary winding coil share the coil windings winding structure of a stator slot, with prevent motor in starting process in
Too high harmonic wave potential, especially low order secondary triple-frequency harmonics potential and quintuple harmonics potential are generated in coil windings, is avoided
There is situations such as electric motor starting is slow, noise is excessive.
But then, it is general not high to employ the stator slot filling rate of the motor of above-mentioned winding structure, there can be part
The vacant situation of stator slot, causes the waste of material, adds production cost；And the winding coefficient of now motor is relatively low so that
Motor performance declines so as to lack the market competitiveness.
Therefore, for employing the monophase machine of above-mentioned two pole winding structure, engineering circles are urgently further tied to it
Structure optimizes.
The content of the invention
For the drawbacks described above or deficiency of prior art, the invention provides a kind of stator, motor, compressor and refrigeration to set
It is standby, caused three, quintuple harmonics potential, the performance of lifting motor in motor starting process can be reduced, while stator iron can be improved
The utilization rate of core material, save production cost.
To achieve the above object, the invention provides a kind of stator, including stator core and coil windings, the stator iron
Core is provided with the N number of stator slot being evenly distributed, and the coil windings include the first main winding and the second main winding being arranged symmetrically
And the first auxiliary winding and the second auxiliary winding being arranged symmetrically, first main winding and the second main winding include N1 layer masters respectively
Winding coil, first auxiliary winding and the second auxiliary winding include N2 layer auxiliary winding coils, every layer of main winding respectively
Or every layer of auxiliary winding coil is embedded with single layer coil in two stator slots in each stator slot, and it is full
Foot：N=4 × (N1+N2).
Preferably, N1 >=N2 >=2.
Preferably, the stator core is provided with 20 stator slots being evenly distributed, first main winding and the second master
Winding includes 3 layers of main winding respectively, and first auxiliary winding and the second auxiliary winding include 2 layers of auxiliary winding coil respectively.
Preferably, the stator slot includes the first stator slot to the 20th stator slot being circumferentially sequentially arranged at equal intervals；
First main winding includes first layer main winding, second layer main winding and third layer main winding, and described
Two main windings include the 4th layer of main winding, layer 5 main winding and layer 6 main winding；
Wherein, the first layer main winding be embedded in the first stator slot and the tenth stator slot in, the second layer master around
Group coil is embedded in the second stator slot and the 9th stator slot, and the third layer main winding is fixed embedded in the 3rd stator slot and the 8th
In pilot trench, the 4th layer of main winding is embedded in the 11st stator slot and the 20th stator slot, the layer 5 main winding
Coil is embedded in the 12nd stator slot and the 19th stator slot, and the layer 6 main winding is embedded in the 13rd stator slot and the
In 18 stator slots.
Preferably, first auxiliary winding includes first layer auxiliary winding coil and second layer auxiliary winding coil, and described second
Auxiliary winding includes third layer auxiliary winding coil and the 4th layer of auxiliary winding coil；
Wherein, the first layer auxiliary winding coil is embedded in the 5th stator slot and the 16th stator slot, the second layer pair
Winding coil is embedded in the 4th stator slot and the 17th stator slot, and the third layer auxiliary winding coil is embedded in the 6th stator slot and the
In 15 stator slots, the 4th layer of auxiliary winding coil is embedded in the 7th stator slot and the 14th stator slot.
Preferably, the outer diameter D of the stator core is：80mm≤D≤125mm.
Preferably, the cross-sectional area of the N1 layers main winding in first main winding or the second main winding it
With the cross-sectional area sum more than the N2 layers auxiliary winding coil in first auxiliary winding or the second auxiliary winding.
Preferably, N1 ＞ N2.
Preferably, the cross section for the single layer coil being embedded in the stator slot is circular or square.
Preferably, first main winding is arranged symmetrically with the second main winding on main winding radial symmetric line, and described
One auxiliary winding is arranged symmetrically with the second auxiliary winding on auxiliary winding radial symmetric line, the main winding radial symmetric line and auxiliary winding
Radial symmetric line is vertical.
In addition, present invention also offers a kind of motor for including the stator.
In addition, present invention also offers a kind of compressor for including the motor.
In addition, present invention also offers a kind of refrigeration plant for including the compressor.
The stator structure of motor is optimized by Pass through above-mentioned technical proposal, the present invention, makes main winding and auxiliary winding right respectively
In the case of claiming arrangement, limiting a stator slot has and only places single layer coil, and the same of motor low order subharmonic is reduced realizing
The utilization rate of Shi Tigao stator core materials, has saved production cost.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is for providing a further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the top view for the stator that 20 stator slots are provided with embodiment；
Fig. 2 is the top view for the stator that 28 stator slots are provided with embodiment.
Description of reference numerals：
1：Stator core；
21：First main winding；22：Second main winding；
31：First auxiliary winding；32：Second auxiliary winding；
4：Main winding radial symmetric line；5：Auxiliary winding radial symmetric line；
S1~S28：First stator slot to the 28th stator slot；
M1~m8：First layer main winding is to the 8th layer of main winding；
A1~a6：First layer auxiliary winding coil is to layer 6 auxiliary winding coil.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the present invention, in the case where not making opposite explanation, the noun of locality such as " upper and lower, top, bottom " used is typically pin
For direction shown in the drawings either for each part mutual alignment relation on vertical, vertical or gravity direction
Word is described.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The invention provides a kind of stator, including stator core 1 and coil windings, stator core 1 is provided with and is evenly distributed
N number of stator slot, coil windings include the first main winding 21 for being arranged symmetrically and the second main winding 22 and be arranged symmetrically the
One auxiliary winding 31 and the second auxiliary winding 32, the first main winding 21 and the second main winding 22 include N1 layer main windings respectively, the
One auxiliary winding 31 and the second auxiliary winding 32 include N2 layer auxiliary winding coils, every layer of main winding or every layer of auxiliary winding coil respectively
In two stator slots, single layer coil is embedded with each stator slot, and meet：N=4 × (N1+N2).
It is to be appreciated that across two where one layer of most main winding of number of stator slots in above-mentioned first main winding 21
Stator slot is with across two stator slots where one layer of most main winding of number of stator slots being corresponding in the second main winding 22
What ground was adjacently positioned；Similarly, across where one layer of most auxiliary winding coil of number of stator slots in above-mentioned first auxiliary winding 31
Across two stator slots where one layer of most auxiliary winding coil of number of stator slots in two stator slots and the second auxiliary winding 32
Accordingly it is adjacently positioned.
In said stator structure, in the case where main winding and auxiliary winding is respectively symmetrically arranged, limiting a stator slot can only place
Single layer coil, the winding mode that multiple main winding and auxiliary winding coils are laminated in a stator slot is avoided the occurrence of, and due to limiting stator slot
Meet relational expression with main winding and auxiliary winding coil：N=4 × (N1+N2), further ensuring that has placement coil in all stator slots, carry
The high utilization rate of stator core material, has saved production cost.
Specifically, the main winding of said stator meets with auxiliary winding coil：N1≥N2≥2.That is, the first master
The number of plies of main winding, which is consistently greater than, in the main winding 22 of winding 21 or second is equal to the first auxiliary winding 31 or the second auxiliary winding 32
The number of plies of middle auxiliary winding coil, and the number of plies of main winding and auxiliary winding coil can not be less than 2 layers.
As shown in figure 1, the stator slot number of said stator is set into 20, the first main winding 21 and the second main winding 22 divide
Not Bao Kuo 3 layers of main winding, the first auxiliary winding 31 and the second auxiliary winding 32 include 2 layers of auxiliary winding coil respectively.Stator core 1
By the electromagnetic steel plate that polylith thickness is 0.1~1.5mm be punched into as defined in shape and by the mode such as riveting or welding circumferentially
It is laminated.
Now the main winding number of plies N1 of the first main winding 21 and the second main winding 22 is equal to 3, the He of the first auxiliary winding 31
The auxiliary winding coil number of plies N2 of second auxiliary winding 32 is equal to 2, stator slot number N=4 × (3+2)=20, therefore said stator knot
Each stator slot in structure has and only placed single layer coil, and the utilization rate of stator core material is higher.
Specifically, said stator groove includes the first stator slot S1 to the 20th stator slot being circumferentially sequentially arranged at equal intervals
S20；First main winding 21 includes first layer main winding m1, second layer main winding m2 and third layer main winding
M3, the second main winding 22 include the 4th layer of main winding m4, layer 5 main winding m5 and layer 6 main winding m6.
Wherein, first layer main winding m1 is embedded in the first stator slot S1 and the tenth stator slot S10, second layer main winding
Coil m2 is embedded in the second stator slot S2 and the 9th stator slot S9, and third layer main winding m3 is embedded in the 3rd stator slot S3 and the
In eight stator slot S8, the 4th layer of main winding m4 is embedded in the 11st stator slot S11 and the 20th stator slot S20, layer 5
Main winding m5 is embedded in the 12nd stator slot S12 and the 19th stator slot S19, and layer 6 main winding m6 is embedded in the tenth
In three stator slot S13 and the 18th stator S18 grooves.
From the foregoing, first layer main winding m1 and the 4th layer of main winding m4 stator separation is 9,
Second layer main winding m2 and layer 5 main winding m5 stator separation are 7, third layer main winding m3
Stator separation with layer 6 main winding m6 is 5.
More specifically, said stator structure meets N1 ＞ N2, first layer main winding m1 is further set to layer 6
Main winding m6 coil radical is 58, and first layer auxiliary winding coil a1 to the 4th layers of auxiliary winding coil a4 coil
Radical is 65.
When above-mentioned main winding connects single-phase alternating source, harmonic wave potential can be generated, it is specific as follows：
First layer main winding m1 and the 4th layer of fundamental wave winding coefficient corresponding to main winding m4 is b11, b11=
sin{1*(9/10)*(π/2)}≈0.9877；
3 subharmonic winding coefficients corresponding to first layer main winding m1 and the 4th layer of main winding m4 are t11, t11
=sin { 3* (9/10) * (pi/2) } ≈ -0.8910；
5 subharmonic winding coefficients corresponding to first layer main winding m1 and the 4th layer of main winding m4 are f11, f11
=sin { 5* (9/10) * (pi/2) } ≈ 0.7071.
Fundamental wave winding coefficient corresponding to second layer main winding m2 and layer 5 main winding m5 is b12, b12=
sin{1*(7/10)*(π/2)}≈0.8910；
3 subharmonic winding coefficient t12, t12=corresponding to second layer main winding m2 and layer 5 main winding m5
sin{3*(7/10)*(π/2)}≈-0.1564；
5 subharmonic winding coefficient f12, f12=corresponding to second layer main winding m2 and layer 5 main winding m5
sin{5*(7/10)*(π/2)}≈-0.7071。
Fundamental wave winding coefficient corresponding to third layer main winding m3 and layer 6 main winding m6 is b13, b13=
sin{1*(5/10)*(π/2)}≈0.7071；
3 subharmonic winding coefficient t13, t13=corresponding to third layer main winding m3 and layer 6 main winding m6
sin{3*(5/10)*(π/2)}≈0.7071；
5 subharmonic winding coefficient f13, f13=corresponding to third layer main winding m3 and layer 6 main winding m6
sin{5*(5/10)*(π/2)}≈-0.7071。
Total fundamental wave winding coefficient of main winding is b1, then：
B1=(58*0.9877+58*0.8910+58*0.7071)/(58+58+58) ≈ 0.8619；
Total 3 subharmonic winding coefficients of main winding are t1, then：
T1={ 58* (- 0.8910)+58* (- 0.1564)+58*0.7071 }/(58+58+58) ≈ -0.1134；
Total 5 subharmonic winding coefficients of main winding are f1, then：
F1={ 58* (0.7071)+58* (- 0.7071)+58* (- 0.7071) }/(58+58+58) ≈ -0.2357.
By above-mentioned data, 3,5 subharmonic winding magnetic potentials of main winding can further be calculated, i.e.,：
Total 3 subharmonic winding magnetic potentials of main winding are Ft1, and：
Ft1=| -0.1134/ (3*0.8619) | * 100% ≈ 4.39%；
Total 5 subharmonic winding magnetic potentials of main winding are Ff1, and:
Ff1=| -0.2357/ (5*0.8619) | * 100% ≈ 5.46%.
In addition, the first auxiliary winding 31 of the said stator with 20 stator slots includes first layer auxiliary winding coil a1 and the
Two layers of auxiliary winding coil a2, the second auxiliary winding 32 include third layer auxiliary winding coil a3 and the 4th layer of auxiliary winding coil a4.
Wherein, first layer auxiliary winding coil a1 be embedded in the 5th stator slot S5 and the 16th stator slot S16 in, second layer pair around
Group coil a2 is embedded in the 4th stator slot S4 and the 17th stator slot S17, and third layer auxiliary winding coil a3 is embedded in the 6th stator slot
In S6 and the 15th stator slot S15, the 4th layer of auxiliary winding coil a4 is embedded in the 7th stator slot S7 and the 14th stator slot S14.
From the foregoing, first layer auxiliary winding coil a1 and third layer auxiliary winding coil a3 stator separation are 9,
Second layer auxiliary winding coil a2 and the 4th layer of auxiliary winding coil a4 stator separation are 7.
Similarly, when above-mentioned auxiliary winding connects single-phase alternating source, harmonic wave potential can be also generated, it is specific as follows：
Fundamental wave winding coefficient corresponding to first layer auxiliary winding coil a1 and third layer auxiliary winding coil a3 is b21, b21=
sin{1*(9/10)*(π/2)}≈0.9877；
3 subharmonic winding coefficients corresponding to first layer auxiliary winding coil a1 and third layer auxiliary winding coil a3 are t21, t21
=sin { 3* (9/10) * (pi/2) } ≈ -0.8910；
5 subharmonic winding coefficients corresponding to first layer auxiliary winding coil a1 and third layer auxiliary winding coil a3 are f21, f21
=sin { 5* (9/10) * (pi/2) } ≈ 0.7071.
Second layer auxiliary winding coil a2 and the 4th layer of fundamental wave winding coefficient corresponding to main winding a4 are b22, b22=
sin{1*(7/10)*(π/2)}≈0.8910；
3 subharmonic winding coefficient t22, t22=corresponding to second layer auxiliary winding coil a2 and the 4th layer of main winding a4
sin{3*(7/10)*(π/2)}≈-0.1564；
5 subharmonic winding coefficient f22, f22=corresponding to second layer auxiliary winding coil a2 and the 4th layer of main winding a4
sin{5*(7/10)*(π/2)}≈-0.7071。
Total fundamental wave winding coefficient of auxiliary winding is b2, then：
B2=(65*0.9877+65*0.8910)/(65+65) ≈ 0.9393；
Total 3 subharmonic winding coefficients of auxiliary winding are t2, then：
T2=(65* (- 0.8910)+65* (- 0.1564))/(65+65) ≈ -0.5237；
Total 5 subharmonic winding coefficients of auxiliary winding are f2, then：
F2=(65* (0.7071)+65* (- 0.7071))/(65+65) ≈ 0.
By above-mentioned data, 3,5 subharmonic winding magnetic potentials of auxiliary winding can further be calculated, i.e.,：
Total 3 subharmonic winding magnetic potentials of auxiliary winding are Ft2, and：
Ft2=| -0.5237/ (3*0.9393) | * 100% ≈ 18.58%；
Total 5 subharmonic winding magnetic potentials of auxiliary winding are Ff2, and:
Ff2=| 0/ (5*0.9393) | * 100% ≈ 0%.
Above-mentioned result of calculation is summarized as follows shown in table：
As can be known from the above table, each winding coil in the main winding of the stator adds up to caused by the single-phase alternating source of connection
3 subharmonic winding magnetic potentials are about 4.39%, and caused total 5 subharmonic winding magnetic potentials are about 5.46%, relative to general technology
For, total harmonic magnetic potential is relatively low caused by it, 3 times, 5 subharmonic torques it is relatively small.On the other hand, although being produced in auxiliary winding
Total 3 subharmonic winding magnetic potentials it is higher, but because the auxiliary winding in monophase machine is serially connected with phase-splitting capacitor, phase-splitting capacitor
There is certain weakening effect to 3 subharmonic, therefore caused total harmonic magnetic potential is relatively low in auxiliary winding, it is corresponding caused humorous
Ripple torque is also smaller.It can be seen that said stator structure can reduce the production of low order subharmonic potential while stator slot is made full use of
It is raw, it is ensured that motor smooth can be started rapidly.
Preferably for the said stator in the present invention with 20 stator slots, the outer diameter D of its stator core 1 should meet：
80mm≤D≤125mm。
By the way that the external diameter of stator core is limited into above-mentioned span, equivalent to the overall dimensions for defining stator, make
Motor maximizes the power density of motor, further reduces life in the case where meeting drop harmonic wave and making full use of its stator slot
Produce cost.
More specifically, N1 layer main windings in the present invention in the first main winding 21 or the second main winding 22 of stator
Cross-sectional area sum be more than the first auxiliary winding 31 or the N2 layer auxiliary winding coils in the second auxiliary winding 32 cross-sectional area it
With.
For example, for the said stator with 20 stator slots, if a diameter of Ф a1, Ф a1 of its single main winding
=0.85mm, and set a diameter of Ф b1, Ф b1=0.8mm of single auxiliary winding coil.Be readily obtained, its first main winding 21 or
In the cross-sectional area sum of 3 layers of main winding in second main winding 22 and the first auxiliary winding 31 or the second auxiliary winding 32
The ratio k 1 of the cross-sectional area sum of 2 layers of auxiliary winding coil, i.e.,：
K1=((58+58+58) * 0.85*0.85)/((65+65) * 0.8*0.8) ≈ 1.51 >=1.
Now, the said stator with 20 stator slots meets above-mentioned requirements.
In addition, as shown in Fig. 2 the stator slot number of said stator is set to 28, and the first main winding 21 and the second master
Winding 22 includes 4 layers of main winding respectively, and the first auxiliary winding 31 and the second auxiliary winding 32 include 3 layers of auxiliary winding coil respectively.
Stator core 1 by the electromagnetic steel plate that polylith thickness is 0.1~1.5mm be punched into as defined in shape and by the side such as riveting or welding
Formula is circumferentially laminated.
Now the main winding number of plies N1 of the first main winding 21 and the second main winding 22 is equal to 4, the He of the first auxiliary winding 31
The auxiliary winding coil number of plies N2 of second auxiliary winding 32 is equal to 3, stator slot number N=4 × (4+3)=28, therefore said stator knot
Each stator slot in structure has and only placed single layer coil, and the utilization rate of stator core material is higher.
Specifically, said stator groove includes the first stator slot S1 to the 28th stator being circumferentially sequentially arranged at equal intervals
Groove S28；First main winding 21 includes first layer main winding m1, second layer main winding m2, third layer main winding
M3 and the 4th layer of main winding m4, the second main winding 22 include layer 5 main winding m5, layer 6 main winding m6,
Layer 7 main winding m7 and the 8th layer of main winding m8.
Wherein, first layer main winding m1 be embedded in the first stator slot S1 and the 14th stator slot S14 in, second layer master around
Group coil m2 is embedded in the second stator slot S2 and the 13rd stator slot S13, and third layer main winding m3 is embedded in the 3rd stator slot
In S3 and the 12nd stator slot S12, the 4th layer of main winding m4 is embedded in the 4th stator slot S4 and the 11st stator slot S11,
Layer 5 main winding m5 is embedded in the 15th stator slot S15 and the 28th stator slot S28, layer 6 main winding m6
In the 16th stator slot S16 and the 27th stator slot S27, layer 7 main winding m7 is embedded in the 17th stator slot
In S17 and the 26th stator slot S26, the 8th layer of main winding m8 is embedded in the 18th stator slot S18 and the 25th stator
In groove S25.
From the foregoing, first layer main winding m1 and layer 5 main winding m5 stator separation are 13
Individual, second layer main winding m2 and layer 6 main winding m6 stator separation are 11, third layer main winding line
The stator separation for enclosing m3 and layer 7 main winding m7 is 9, the 4th layer of main winding m4 and the 8th layer of main winding
Coil m8 stator separation is 7.
More specifically, said stator structure meets N1 ＞ N2, first layer main winding m1 to the 8th layers is further set
Main winding m8 coil radical is 43, and first layer auxiliary winding coil a1 is to layer 6 auxiliary winding coil a6 coil
Radical is 44.
When above-mentioned main winding connects single-phase alternating source, harmonic wave potential can be generated, it is specific as follows：
Fundamental wave winding coefficient corresponding to first layer main winding m1 and layer 5 main winding m5 is b31, b31=
sin{1*(13/14)*(π/2)}≈0.9937；
3 subharmonic winding coefficients corresponding to first layer main winding m1 and layer 5 main winding m5 are t31, t31
=sin { 3* (13/14) * (pi/2) } ≈ -0.9439；
5 subharmonic winding coefficients corresponding to first layer main winding m1 and layer 5 main winding m5 are f31, f31
=sin { 5* (13/14) * (pi/2) } ≈ 0.8467.
Fundamental wave winding coefficient corresponding to second layer main winding m2 and layer 6 main winding m6 is b32, b32=
sin{1*(11/14)*(π/2)}≈0.9439；
3 subharmonic winding coefficient t32, t32=corresponding to second layer main winding m2 and layer 6 main winding m6
sin{3*(11/14)*(π/2)}≈-0.5320；
5 subharmonic winding coefficient f32, f32=corresponding to second layer main winding m2 and layer 6 main winding m6
sin{5*(11/14)*(π/2)}≈-0.1120。
Fundamental wave winding coefficient corresponding to third layer main winding m3 and layer 7 main winding m7 is b33, b33=
sin{1*(9/14)*(π/2)}≈0.8467；
3 subharmonic winding coefficient t33, t33=corresponding to third layer main winding m3 and layer 7 main winding m7
sin{3*(9/14)*(π/2)}≈0.1120；
5 subharmonic winding coefficient f33, f33=corresponding to third layer main winding m3 and layer 7 main winding m7
sin{5*(9/14)*(π/2)}≈-0.9439。
4th layer of main winding m4 and the 8th layer of fundamental wave winding coefficient corresponding to main winding m8 is b34, b34=
sin{1*(7/14)*(π/2)}≈0.7071；
3 subharmonic winding coefficient t34, t34=corresponding to 4th layer of main winding m4 and the 8th layer of main winding m8
sin{3*(7/14)*(π/2)}≈0.7071；
5 subharmonic winding coefficient f34, f34=corresponding to 4th layer of main winding m4 and the 8th layer of main winding m8
sin{5*(7/14)*(π/2)}≈-0.7071。
Total fundamental wave winding coefficient of main winding is b3, then：
B3=(43*0.9937+43*0.9439+43*0.8467+43*0.7071)/(43+43+43+43) ≈ 0.8729；
Total 3 subharmonic winding coefficients of main winding are t3, then：
T3={ 43* (- 0.9439)+43* (- 0.5320)+43*0.1120+43*0.7071 }/(43+43+43+43) ≈-
0.1642；
Total 5 subharmonic winding coefficients of main winding are f3, then：
F3={ 43* (0.8467)+43* (- 0.1120)+43* (- 0.9439)+43* (- 0.7071) }/(43+43+43+
43)≈-0.2291。
By above-mentioned data, 3,5 subharmonic winding magnetic potentials of main winding can further be calculated, i.e.,：
Total 3 subharmonic winding magnetic potentials of main winding are Ft3, and：
Ft3=| -0.1642/ (3*0.8729) | * 100% ≈ 6.27%；
Total 5 subharmonic winding magnetic potentials of main winding are Ff3, and:
Ff3=| -0.2291/ (5*0.8729) | * 100% ≈ 5.25%.
In addition, the first auxiliary winding 31 of the said stator with 28 stator slots includes first layer auxiliary winding coil a1, the
Two layers of auxiliary winding coil a2 and third layer auxiliary winding coil a3, the second auxiliary winding 32 include the 4th layer of auxiliary winding coil a4, five
Layer auxiliary winding coil a5 and layer 6 auxiliary winding coil a6；
Wherein, first layer auxiliary winding coil a1 is embedded in the 7th stator slot S7 and the 22nd stator slot S22, second layer pair
Winding coil a2 is embedded in the 6th stator slot S6 and the 23rd stator slot S23, and third layer auxiliary winding coil a3 is fixed embedded in the 5th
In pilot trench S5 and the 24th stator slot S24, the 4th layer of auxiliary winding coil a4 is embedded in the 8th stator slot S8 and the 21st stator
In groove S21, layer 5 auxiliary winding coil a5 is embedded in the 9th stator slot S9 and the 20th stator slot S20, layer 6 auxiliary winding line
A6 is enclosed to be embedded in the tenth stator slot S10 and the 19th stator slot S19.
From the foregoing, first layer auxiliary winding coil a1 and the 4th layer of auxiliary winding coil a4 stator separation are 13
Individual, second layer auxiliary winding coil a2 and layer 5 auxiliary winding coil a5 stator separation are 11, third layer auxiliary winding line
The stator separation for enclosing a3 and layer 6 auxiliary winding coil a6 is 9.
Similarly, when above-mentioned auxiliary winding connects single-phase alternating source, harmonic wave potential can be also generated, it is specific as follows：
Fundamental wave winding coefficient corresponding to first layer auxiliary winding coil a1 and the 4th layer of auxiliary winding coil a4 is b41, b41=
sin{1*(13/14)*(π/2)}≈0.9937；
3 subharmonic winding coefficients corresponding to first layer auxiliary winding coil a1 and the 4th layer of auxiliary winding coil a4 are t41, t41
=sin { 3* (13/14) * (pi/2) } ≈ -0.9439；
5 subharmonic winding coefficients corresponding to first layer auxiliary winding coil a1 and the 4th layer of auxiliary winding coil a4 are f41, f41
=sin { 5* (13/14) * (pi/2) } ≈ 0.8467.
Fundamental wave winding coefficient corresponding to second layer auxiliary winding coil a2 and layer 5 main winding a5 is b42, b42=
sin{1*(11/14)*(π/2)}≈0.9439；
3 subharmonic winding coefficient t42, t42=corresponding to second layer auxiliary winding coil a2 and layer 5 main winding a5
sin{3*(11/14)*(π/2)}≈-0.5320；
5 subharmonic winding coefficient f42, f42=corresponding to second layer auxiliary winding coil a2 and layer 5 main winding a5
sin{5*(11/14)*(π/2)}≈-0.1120。
Fundamental wave winding coefficient corresponding to third layer auxiliary winding coil a3 and layer 6 main winding a6 is b43, b43=
sin{1*(9/14)*(π/2)}≈0.8467；
3 subharmonic winding coefficient t43, t43=corresponding to third layer auxiliary winding coil a3 and layer 6 main winding a6
sin{3*(9/14)*(π/2)}≈0.1120；
5 subharmonic winding coefficient f43, f43=corresponding to third layer auxiliary winding coil a3 and layer 6 main winding a6
sin{5*(9/14)*(π/2)}≈-0.9439。
Total fundamental wave winding coefficient of auxiliary winding is b4, then：
B4=(44*0.9937+65*0.9439+44*0.8467)/(44+44+44) ≈ 0.9281；
Total 3 subharmonic winding coefficients of auxiliary winding are t4, then：
T4=(44* (- 0.9439)+44* (- 0.5320)+44*0.1120)/(44+44+44) ≈ -0.4546；
Total 5 subharmonic winding coefficients of auxiliary winding are f4, then：
F4=(44* (0.8467)+44* (- 0.1120)+44* (- 0.9439))/(44+44+44) ≈ -0.0697；
By above-mentioned data, 3,5 subharmonic winding magnetic potentials of auxiliary winding can further be calculated, i.e.,：
Total 3 subharmonic winding magnetic potentials of auxiliary winding are Ft4, and：
Ft4=| -0.4546/ (3*0.9281) | * 100% ≈ 16.33%；
Total 5 subharmonic winding magnetic potentials of auxiliary winding are Ff4, and:
Ff4=| -0.0697/ (5*0.9281) | * 100% ≈ 1.50%.
Above-mentioned result of calculation is summarized as follows shown in table：
As can be known from the above table, each winding coil in the main winding of the stator adds up to caused by the single-phase alternating source of connection
3 subharmonic winding magnetic potentials are about 6.27%, and caused total 5 subharmonic winding magnetic potentials are about 5.25%, relative to general technology
For, total harmonic magnetic potential is relatively low caused by it, 3 times, 5 subharmonic torques it is relatively small.On the other hand, although being produced in auxiliary winding
Total 3 subharmonic winding magnetic potentials it is higher, but because the auxiliary winding in monophase machine is serially connected with phase-splitting capacitor, phase-splitting capacitor
There is certain weakening effect to 3 subharmonic, therefore caused total harmonic magnetic potential is relatively low in auxiliary winding, it is corresponding caused humorous
Ripple torque is also smaller.It can be seen that said stator structure can reduce the production of low order subharmonic potential while stator slot is made full use of
It is raw, it is ensured that motor smooth can be started rapidly.
Preferably for the said stator in the present invention with 28 stator slots, the outer diameter D of its stator core 1 should meet：
120mm≤D≤160mm。
By the way that the external diameter of stator core is limited into above-mentioned span, equivalent to the overall dimensions for defining stator, make
Motor maximizes the power density of motor, further reduces life in the case where meeting drop harmonic wave and making full use of its stator slot
Produce cost.
More specifically, N1 layer main windings in the present invention in the first main winding 21 or the second main winding 22 of stator
Cross-sectional area sum be more than the first auxiliary winding 31 or the N2 layer auxiliary winding coils in the second auxiliary winding 32 cross-sectional area it
With.
For example, for the said stator with 28 stator slots, if a diameter of Ф a2, Ф a2 of its single main winding
=0.85mm, and set a diameter of Ф b2, Ф b2=0.825mm of single auxiliary winding coil.It is readily obtained, its first main winding 21
Or the cross-sectional area sum of second 4 layers of main winding in main winding 22 with the first auxiliary winding 31 or the second auxiliary winding 32
3 layers of auxiliary winding coil cross-sectional area sum ratio k 2, i.e.,：
K2=((43+43+43+43) * 0.85*0.85)/((44+44+44) * 0.825*0.825) ≈ 1.38 >=1.
Now, the said stator with 28 stator slots meets above-mentioned requirements.
Specifically, the cross section for the single layer coil being embedded in above-mentioned all stator slots can be circular or square.
Specifically, the first main winding 21 of above-mentioned all stators and the second main winding 22 are on main winding radial symmetric line 4
It is arranged symmetrically, the first auxiliary winding 31 is arranged symmetrically with the second auxiliary winding 32 on auxiliary winding radial symmetric line 5, and main winding is radially right
Claim line 4 vertical with auxiliary winding radial symmetric line 5.That is, it is by orthogonal winding mode cloth between main winding and auxiliary winding
Put, plus the phase separation of capacitor, can ensure that motor produces complete rotating excitation field when switching on power near stator,
So that motor rotates.
On the basis of the optimization structure of said stator, present invention also offers a kind of motor, and it includes said stator.It is logical
Cross and use said stator, it is possible to reduce caused low order subharmonic in motor operation course, improve the performance of motor, and save
The production cost of motor.
Present invention also offers a kind of compressor, including above-mentioned motor, by using the motor, can improve compressor
Overall performance.
Similarly, present invention also offers a kind of refrigeration plant, including above-mentioned compressor, by using the compressor,
The overall performance of refrigeration plant can also be improved.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (13)
1. a kind of stator, including stator core (1) and coil windings, the stator core (1) is N number of fixed provided with being evenly distributed
Pilot trench, it is characterised in that the coil windings include the first main winding (21) for being arranged symmetrically and the second main winding (22) and
The first auxiliary winding (31) and the second auxiliary winding (32) being arranged symmetrically, first main winding (21) and the second main winding (22) point
Not Bao Kuo N1 layer main windings, first auxiliary winding (31) and the second auxiliary winding (32) include N2 layer auxiliary winding lines respectively
Circle, every layer of main winding or every layer of auxiliary winding coil are in two stator slots, each stator
Single layer coil is embedded with groove, and is met：N=4 × (N1+N2), N2≤N1≤4.
2. stator according to claim 1, it is characterised in that N1 >=N2 >=2.
3. stator according to claim 1, it is characterised in that it is fixed that the stator core (1) is provided with 28 be evenly distributed
Pilot trench, first main winding (21) and the second main winding (22) include 4 layers of main winding, first auxiliary winding respectively
(31) and the second auxiliary winding (32) includes 3 layers of auxiliary winding coil respectively.
4. stator according to claim 3, it is characterised in that the stator slot includes the be circumferentially sequentially arranged at equal intervals
One stator slot (S1) is to the 28th stator slot (S28)；First main winding (21) include first layer main winding (m1),
Second layer main winding (m2), third layer main winding (m3) and the 4th layer of main winding (m4), it is described second master around
Group (22) includes layer 5 main winding (m5), layer 6 main winding (m6), layer 7 main winding (m7) and the
Eight layers of main winding (m8)；
Wherein, the first layer main winding (m1) is embedded in the first stator slot (S1) and the 14th stator slot (S14), described
Second layer main winding (m2) is embedded in the second stator slot (S2) and the 13rd stator slot (S13), the third layer main winding
Coil (m3) is embedded in the 3rd stator slot (S3) and the 12nd stator slot (S12), and the 4th layer of main winding (m4) is embedded in
In 4th stator slot (S4) and the 11st stator slot (S11), the layer 5 main winding (m5) is embedded in the 15th stator slot
(S15) and in the 28th stator slot (S28), the layer 6 main winding (m6) embedded in the 16th stator slot (S16) and
In 27th stator slot (S27), the layer 7 main winding (m7) is embedded in the 17th stator slot (S17) and the 26th
In stator slot (S26), the 8th layer of main winding (m8) is embedded in the 18th stator slot (S18) and the 25th stator slot
(S25) in.
5. stator according to claim 4, it is characterised in that first auxiliary winding (31) includes first layer auxiliary winding coil
(a1), second layer auxiliary winding coil (a2) and third layer auxiliary winding coil (a3), second auxiliary winding (32) include the 4th layer
Auxiliary winding coil (a4), layer 5 auxiliary winding coil (a5) and layer 6 auxiliary winding coil (a6)；
Wherein, the first layer auxiliary winding coil (a1) is embedded in the 7th stator slot (S7) and the 22nd stator slot (S22), institute
Second layer auxiliary winding coil (a2) is stated in the 6th stator slot (S6) and the 23rd stator slot (S23), the third layer pair
Winding coil (a3) is embedded in the 5th stator slot (S5) and the 24th stator slot (S24), the 4th layer of auxiliary winding coil
(a4) it is embedded in the 8th stator slot (S8) and the 21st stator slot (S21), the layer 5 auxiliary winding coil (a5) is embedded in the
In nine stator slots (S9) and the 20th stator slot (S20), the layer 6 auxiliary winding coil (a6) is embedded in the tenth stator slot (S10)
In the 19th stator slot (S19).
6. stator according to claim 3, it is characterised in that the outer diameter D of the stator core (1) is：120mm≤D≤
160mm。
7. the stator according to any one in claim 1~6, it is characterised in that first main winding (21) or second
The cross-sectional area sum of the N1 layers main winding in main winding (22) is more than first auxiliary winding (31) or second
The cross-sectional area sum of the N2 layers auxiliary winding coil in auxiliary winding (32).
8. stator according to claim 7, it is characterised in that N1 ＞ N2.
9. stator according to claim 7, it is characterised in that the cross section for the single layer coil being embedded in the stator slot
To be circular or square.
10. stator according to claim 1, it is characterised in that first main winding (21) is closed with the second main winding (22)
It is arranged symmetrically in main winding radial symmetric line (4), first auxiliary winding (31) is with the second auxiliary winding (32) on auxiliary winding footpath
It is arranged symmetrically to line of symmetry (5), the main winding radial symmetric line (4) is vertical with auxiliary winding radial symmetric line (5).
11. a kind of motor, it is characterised in that the motor includes stator according to any one of claims 1 to 10.
12. a kind of compressor, it is characterised in that the compressor includes the motor described in claim 11.
13. a kind of refrigeration plant, it is characterised in that the refrigeration plant includes the compressor described in claim 12.
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| CN201710724144.5A CN107370259A (en) | 2017-08-22 | 2017-08-22 | Stator, motor, compressor and refrigeration plant |
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ID=60311159
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|---|---|---|---|---|
| CN102593978A (en) * | 2012-02-27 | 2012-07-18 | 山东大学 | Double-winding permanent-magnet brushless servo motor for servo press machine |
| EP2632023A1 (en) * | 2010-10-19 | 2013-08-28 | Nissan Motor Co., Ltd | Dynamo-electric machine and on-vehicle dynamo-electric machine system |
| CN106208435A (en) * | 2016-07-18 | 2016-12-07 | 广东美芝制冷设备有限公司 | Stator module and there is its motor, compressor and refrigeration plant |
| CN106208469A (en) * | 2016-08-19 | 2016-12-07 | 广东美芝制冷设备有限公司 | Compressor electric motor and the compressor with it |
| CN205945463U (en) * | 2016-08-31 | 2017-02-08 | 罗昌慧 | Single -phase capacitor starts asynchronous bipolar motor stator |
| CN207573120U (en) * | 2017-08-22 | 2018-07-03 | 广东美芝制冷设备有限公司 | Stator, motor, compressor and refrigeration equipment |
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2017
- 2017-08-22 CN CN201710724144.5A patent/CN107370259A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2632023A1 (en) * | 2010-10-19 | 2013-08-28 | Nissan Motor Co., Ltd | Dynamo-electric machine and on-vehicle dynamo-electric machine system |
| CN102593978A (en) * | 2012-02-27 | 2012-07-18 | 山东大学 | Double-winding permanent-magnet brushless servo motor for servo press machine |
| CN106208435A (en) * | 2016-07-18 | 2016-12-07 | 广东美芝制冷设备有限公司 | Stator module and there is its motor, compressor and refrigeration plant |
| CN106208469A (en) * | 2016-08-19 | 2016-12-07 | 广东美芝制冷设备有限公司 | Compressor electric motor and the compressor with it |
| CN205945463U (en) * | 2016-08-31 | 2017-02-08 | 罗昌慧 | Single -phase capacitor starts asynchronous bipolar motor stator |
| CN207573120U (en) * | 2017-08-22 | 2018-07-03 | 广东美芝制冷设备有限公司 | Stator, motor, compressor and refrigeration equipment |
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