CN208316431U - A kind of brushless dual-feed motor - Google Patents
A kind of brushless dual-feed motor Download PDFInfo
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- CN208316431U CN208316431U CN201820749034.4U CN201820749034U CN208316431U CN 208316431 U CN208316431 U CN 208316431U CN 201820749034 U CN201820749034 U CN 201820749034U CN 208316431 U CN208316431 U CN 208316431U
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- 238000003475 lamination Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 7
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Abstract
The utility model discloses a kind of brushless dual-feed motor, a kind of brushless dual-feed motor, including, stator and rotor, wherein stator winding is made of power winding and control winding, and the power winding uses 2 pole, 3 phase connection mode, and every phase has a pole phase group；The control winding uses 6 pole, 3 phase connection mode, and there are three pole phase groups for every phase；The stator is provided with stator armature core stamping slot；The rotor is provided with armature rotor core stamping slot.The utility model is simplified brushless dual-feed motor rotor processing technique, reduce the end leakage reactance of brushless double-fed machine rotor, improve the mechanical strength of rotor, the insulation performance and motor gas-gap Distribution of Magnetic Field of end ring are improved, so that motor power factor, motor operation efficiency are improved；In being highly suitable for, high-power brushless double-fed machine.
Description
Technical field
The utility model relates to technical field of motors, in particular to a kind of brushless dual-feed motor.
Background technique
Brushless dual-feed motor is the AC induction motor being made of the stator winding of two sets of different numbers of pole-pairs and rotor, due to
Cancel brush and slip ring on rotor, so that brushless dual-feed motor has structure simple, safe and reliable to operation low with maintenance cost etc.
Advantage, in terms of large capacity ac variable frequency speed regulation and shaft generator peculiar to vessel, hydroelectric generation and field of wind power generation obtain
Widely apply.
The key that brushless dual-feed motor plays its good speed adjusting performance is rotor.Currently, rotor windings in casting, need
The manufacture of conductor end ring is completed by the short-circuit end ring grinding tool of additional designs, short-circuit end ring also needs to carry out insulation processing,
Therefore, processing technology is more complicated.In addition, smaller in technique lower rotor part the number of turns, Distribution of Magnetic Field is caused in motor operation course not
Uniformly, so that motor power factor is lower, electric efficiency is low, performance is poor.
Therefore, how to provide a kind of high performance brushless dual-feed motor is that those skilled in the art's technology urgently to be resolved is asked
Topic.
Utility model content
In view of this, providing a kind of brushless double feed the purpose of the utility model is to overcome in place of the deficiencies in the prior art
Motor, the brushless dual-feed motor power factor for solving existing structure is lower, inefficient, torque ripple and noise are big, it is difficult to full
The problems such as requirement of sufficient high-performance engineering application.Its concrete scheme is as follows to achieve the above object:
A kind of brushless dual-feed motor, including, stator and rotor, wherein stator winding is by power winding ppWith control winding pc
It constitutes, the number of pole-pairs p of stator windingr=pp+pc, the power winding ppUsing 2 pole, 3 phase connection mode, and every phase has a pole
Phase group；The control winding pcUsing 6 pole, 3 phase connection mode, and there are three pole phase groups for every phase；The stator is provided with stator electricity
Pivot core stamping slot；The rotor is provided with armature rotor core stamping slot.
Preferably, the stator armature core stamping slot is stator armature core stamping rectangular channel, and number is 72, described
Power winding uses 72 slot, 2 pole, 3 phase connection mode；The corresponding armature rotor core stamping slot is armature rotor core stamping
Rectangular channel, and number is 96.
Preferably, the stator armature core stamping slot is stator armature core stamping rectangular channel, and number is 72, described
Power winding uses 72 slot, 2 pole, 3 phase connection mode；The corresponding armature rotor core stamping slot is armature rotor core stamping
Rectangular channel, and number is 56.
Preferably, the stator armature core stamping slot is stator armature core stamping peariform slot, and number is 36, described
Power winding uses 36 slot, 2 pole, 3 phase connection mode；The corresponding armature rotor core stamping slot is armature rotor core stamping
Peariform slot, and number is 44, the rotor winding coil uses the mode of connection for becoming span, totally 40 coils.
Preferably, each coil turn of power winding is 34, coil spread Y=29, totally 36 coils.
Preferably, each coil turn of the control winding is 3, coil spread Y=10, totally 72 coils.
Preferably, described rotor winding coil the number of turns is 1, using the mode of connection for becoming span, totally 76 coils.
Preferably, each coil turn of the rotor windings is 1, using the mode of connection for becoming span, totally 64 coils.
Preferably, each coil turn of power winding is 16, coil spread Y=15, is located at the stator armature iron
At the top of core punching peariform slot.
Preferably, each coil turn of the control winding is 10, coil spread Y=5, is located at the stator armature iron core
Punching pyriform trench bottom.
Preferably, the slot inner wall of the stator armature core stamping rectangular channel and the armature rotor core stamping rectangular channel
It is provided with notch, the notch and the slot inner wall are in 60 ° of inclinations angle.
Preferably, the stator armature core stamping peariform slot and the armature rotor core stamping peariform slot are opened close
The mouth end position 1mm is respectively formed 30 ° of inclination angles.
Preferably, number of pole-pairs are as follows: pr=pp+pc=4.
Preferably, the pcWith the ppMeet following the constraint relationship: the pcFor pp3 times.
Preferably, stator in brushless dual-feed motor, rotor set-up mode be suitable for motor and generator.
A kind of brushless dual-feed motor of the utility model turns brushless dual-feed motor as the above scheme is adopted
Sub- processing technology is simplified, and reduces the end leakage reactance of brushless double-fed machine rotor, is improved the mechanical strength of rotor, is changed
The insulation performance of end ring has been apt to it, in the performance for improving brushless-fed machine to a certain degree；Secondly, the utility model can also improve electricity
Machine air-gap field distribution, so that motor power factor, motor operation efficiency are improved；In addition, in suc scheme, turning
Son can be equivalent to class salient-pole structure, be highly suitable in, high-power brushless double-fed machine.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of brushless dual-feed motor stator and rotor armature core punching rectangle disclosed in the utility model embodiment one
Slot structure figure；
Fig. 2 is a kind of brushless dual-feed motor power winding connection figure disclosed in the utility model embodiment one；
Fig. 3 is a kind of brushless dual-feed motor control winding wiring diagram disclosed in the utility model embodiment one；
Fig. 4 is a kind of brushless dual-feed motor rotor windings wiring diagram disclosed in the utility model embodiment one；
Fig. 5 is a kind of brushless dual-feed motor stator and rotor armature core punching rectangle disclosed in the utility model embodiment two
Slot structure figure；
Fig. 6 is a kind of brushless dual-feed motor power winding connection figure disclosed in the utility model embodiment two；
Fig. 7 is a kind of brushless dual-feed motor control winding wiring diagram disclosed in the utility model embodiment two；
Fig. 8 is a kind of brushless dual-feed motor rotor windings wiring diagram disclosed in the utility model embodiment two；
Fig. 9 is a kind of brushless dual-feed motor stator and rotor armature core punching rectangle disclosed in the utility model embodiment three
Slot structure figure；
Figure 10 is a kind of brushless dual-feed motor power winding connection figure disclosed in the utility model embodiment three；
Figure 11 is a kind of brushless dual-feed motor control winding wiring diagram disclosed in the utility model embodiment three；
Figure 12 is a kind of brushless dual-feed motor rotor windings wiring diagram disclosed in the utility model embodiment three.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
A kind of brushless dual-feed motor, including, stator and rotor, wherein stator winding is by power winding ppWith control winding pc
It constitutes, the number of pole-pairs p of stator windingr=pp+pc, power winding ppUsing 2 pole, 3 phase connection mode, and every phase has a pole phase
Group；Control winding pcUsing 6 pole, 3 phase connection mode, and there are three pole phase groups for every phase；Stator is provided with stator armature core stamping
Slot 1；Rotor is provided with armature rotor core stamping slot 2.
Embodiment one
Stator armature core stamping slot 1 is stator armature core stamping rectangular channel, stator armature core stamping rectangular channel
Number is 72, and armature rotor core stamping slot 2 is armature rotor core stamping rectangular channel, armature rotor core stamping rectangular channel
Number is 96, and power winding uses 72 slot, 2 pole, 3 phase connection mode, and control winding uses 72 slot, 6 pole, 3 phase connection mode.
In order to further optimize the above technical scheme, each coil turn of power winding is 22, coil spread Y=29, is total to
36 coils.
In order to further optimize the above technical scheme, each coil turn of control winding is 3, coil spread Y=10, totally 72
A coil.
In order to further optimize the above technical scheme, rotor winding coil the number of turns be 1, using become span the mode of connection,
Totally 76 coils.
It is herein 560Kw with rated power, rated speed 750r/min, rated supply frequency 50Hz, adjusts the speed model
It encloses are as follows: the brushless dual-feed motor of 750r/min-1000r/min introduces specific implementation method.Implementation method includes the following steps:
Step 1: stator winding number of pole-pairs calculates.Due to power winding number of pole-pairs ppWith control winding number of pole-pairs pcSize
The speed adjustable range for determining motor can determine number of pole-pairs are as follows: p in conjunction with the rated speed requirement of motorr=pp+pc=4.
Step 2: control winding and power winding number of pole-pairs determine.To eliminate the electromagnetic action between two stator winding, pole
Logarithm should meet pp≠pc.In view of working as ppAnd pcIt differs bigger, can more reduce noise and vibration and in order to generate stronger correspondence
Harmonic field, number of pole-pairs ppAnd pcPreferably meet 3 times and be related to these the constraint relationships, can determine that the stator winding of the design is extremely right
Number are as follows: pp=1 and pc=3.
Step 3: the design of stator winding pitch.In view of the reasonability of power winding and control winding, the design motor
Number of stator slots Z1=36, then power winding and the MgO-ZrO_2 brick of control winding are respectively 12 and 4, and pole span is respectively τp=
36 and τc=12.In view of three-phase windings can be eliminated three times and its multiple harmonic wave using " Y type " connection.So design winding pitch
It is main to consider to weaken 5,7 subharmonic, therefore power winding and the first segment of control winding are away from separately designing are as follows: ypl=5 τp/ 6=
30、ycl=5 τp/ 6=10.
Step 4: the design of stator winding span when pitch has obtained, can obtain power winding coil span Y
=29, control winding coil spread Y=10.
Step 5: the specific distribution design of power winding and control winding in stator slot.60 ° of facies tracts are used herein to draw
Point method determines power winding and control winding in stator groove location.It is reasonable to consider that power winding and control winding are placed
Property, stator winding uses bilayer formation in this example.Although stator winding is bilayer formation, it is equivalent to for each winding
Single-layer Windings.Therefore, the every phase of power winding has a pole phase group, and there are three pole phase groups for control winding.In order to guarantee each member
Part pitch is consistent, and winding configuration selects interleaving winding.It can be obtained according to pitch such as attached drawing 2 and attached power winding shown in Fig. 3
With the wiring diagram of control winding.
Step 7: rotor structure.In view of closed loop configuration cage-type rotor number of poles transformation is very strong, this example design electricity
The structure of machine rotor uses closed loop configuration cage-type rotor.To eliminate appended synchronization torque caused by rotor harmony wave and keeping away
Exempt from the single vibration power that the interaction of single order slot ripples generates, rotor slot number is selected according to " nearly slot " selection principle.This example design
Rotor be made of 4 nests, again include multiple mutually independent closed loops in each nest.Based on enhancing fundamental wave and humorous three times
Wave magnetic potential inhibits other higher hamonic waves (mainly reducing by 5 subharmonic).The wiring of rotor windings as shown in Fig. 4 can be designed
Figure.
Single dotted broken line, single dotted line and doublet coil number, span, the number of turns and offline sequence such as following table institute in attached drawing 4
Show.
| Graphical boxes | Single dotted broken line | Single dotted line | Doublet | Double dot dash line |
| Coil number | 4 × 8=32 | 8 × 4=32 | 2 × 4=8 | 1 × 4=4 |
| Line gauge | 1~5.6 × 28 | 1~5.6 × 28 | 1~5.6 × 28 | 1~5.6 × 28 |
| Span | 40 | 16 | 18 | 34 |
| The number of turns | 1 | 1 | 1 | 1 |
| Offline sequence | 1 | 2 | 3 | 4 |
Step 8: coil insulation material is chosen.According to temperature rise, the structure of double glass fiber is can be used in stator and rotor coil.
Step 9: stator armature core stamping rectangular channel and the design of armature rotor core stamping rectangular groove structure.According to front
Design coil turn and insulating materials type, it may be determined that stator and rotor armature core punching rectangular channel tool as shown in Fig. 1
Body parameter is as follows:
Stator armature iron-core lamination rectangle flute length 61mm, wide 15.6mm, away from stator armature iron-core lamination rectangle channel opening 1mm
3mm long rabbet is equipped at position；Armature rotor iron-core lamination rectangle flute length 65mm, wide 7.2mm, away from armature rotor iron-core lamination square
3mm long rabbet is equipped at the position shape channel opening 1mm.Stator armature iron-core lamination rectangle channel opening and armature rotor iron-core lamination square
Shape channel opening is at a distance of 2mm.
Embodiment two
Stator armature core stamping slot 1 is stator armature core stamping rectangular channel, stator armature core stamping rectangular channel
Number is 72, and armature rotor core stamping slot 2 is armature rotor core stamping rectangular channel, armature rotor core stamping rectangular channel
Number is 56, and power winding uses 72 slot, 2 pole, 3 phase connection mode, and control winding uses 72 slot, 6 pole, 3 phase connection mode.
In order to further optimize the above technical scheme, each coil turn of power winding is 34, coil spread Y=29, is total to
36 coils.
In order to further optimize the above technical scheme, each coil turn of control winding is 3, coil spread Y=10, totally 72
A coil.
In order to further optimize the above technical scheme, each coil turn of rotor windings is 1, using the wiring side for becoming span
Formula, totally 64 coils.
It is herein 250Kw with rated power, rated speed 750r/min, rated supply frequency 50Hz, adjusts the speed model
It encloses are as follows: the brushless dual-feed motor of 750r/min~1000r/min introduces the implementation method in specific implementation method and embodiment one
Difference be:
Power winding line gauge are as follows: 1~0.9 × 3.15, control winding line gauge are as follows: 2~2.24 × 11.2.Single-point in attached drawing 8
Scribing line, single dotted line and doublet coil number, span, the number of turns and offline sequence are as shown in the table.
Stator armature iron-core lamination rectangle flute length 57mm, wide 13mm, away from stator armature iron-core lamination rectangle channel opening 1mm
It sets place and is equipped with 3mm long rabbet；Armature rotor iron-core lamination rectangle flute length 55mm, wide 9mm, away from armature rotor iron-core lamination rectangular channel
It is open at the position 1mm equipped with 3mm long rabbet.Stator armature iron-core lamination rectangle channel opening and armature rotor iron-core lamination rectangular channel
Opening is at a distance of 2mm.
Embodiment three
Stator armature core stamping slot 1 is stator armature core stamping peariform slot, and number is 36, and power winding uses 36
2 pole of slot, 3 phase connection mode；Corresponding armature rotor core stamping slot 2 is armature rotor core stamping peariform slot, and number is
44, rotor winding coil uses the mode of connection for becoming span, totally 40 coils.
In order to further optimize the above technical scheme, each coil turn of power winding is 16, coil spread Y=15, position
At the top of stator armature core stamping peariform slot.
In order to further optimize the above technical scheme, each coil turn of control winding is 10, and coil spread Y=5 is located at
Stator armature core stamping pyriform trench bottom.
It is herein 100Kw with rated power, rated speed 750r/min, rated supply frequency 50Hz, adjusts the speed model
It encloses are as follows: the brushless dual-feed motor of 750r/min-1000r/min introduces the implementation method in specific implementation method and embodiment one
Difference is:
The design of stator winding span, when pitch has obtained, can obtain power winding coil span Y=15,
Control winding coil spread Y=5.
Power winding line gauge are as follows: 1~0.9 × 3.15, control winding line gauge are as follows: 2~2.24 × 11.2.Single-point in attached drawing 12
Scribing line, single dotted line and doublet coil number, span, the number of turns and offline sequence are as shown in the table.
| Graphical boxes | Single dotted line | Doublet | Single dotted broken line | Double dot dash line | Three chain-dotted lines |
| Line footpath | 10~Φ 1.5 | 10~Φ 1.5 | 10~Φ 1.5 | 10~Φ 1.5 | 10~Φ 1.5 |
| Span | 8 | 8 | 18 | 18 | 4 |
| The number of turns | 2 | 4 | 4 | 2 | 2 |
| Offline sequence | 3 | 4 | 1 | 2 | 5 |
Stator armature iron-core lamination peariform slot end is the arc groove of radius φ 8mm, arc groove distance of center circle stator armature iron
Heart punching peariform slot leading portion extended distance is 22.3mm, and opening bore is 3.6mm, and stator armature core stamping peariform slot is close
The open end position 1mm has 30 ° of inclination angles, and forms the slot pitch of 13.6mm；Armature rotor core stamping peariform slot end is radius
The arc groove of φ 1.8mm, arc groove distance of center circle stator armature iron-core lamination peariform slot leading portion extended distance are 48.8mm, and be open mouth
Diameter is 3.6mm, and stator armature core stamping peariform slot is all having 30 ° of inclination angles close to the position open end 1mm, and forms 9.6mm
Slot pitch.Stator armature iron-core lamination pyriform channel opening and armature rotor iron-core lamination pyriform channel opening are at a distance of 0.8mm.
A kind of brushless dual-feed motor provided by the utility model is described in detail above, tool used herein
Body example is expounded the principles of the present invention and embodiment, and the above embodiments are only used to help understand
The method and its core concept of the utility model；At the same time, for those skilled in the art, the think of according to the utility model
Think, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as pair
The limitation of the utility model.
Herein, relational terms such as first and second and the like be used merely to by an entity or operation with it is another
One entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this reality
Relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
Claims (10)
1. a kind of brushless dual-feed motor, including, stator, rotor, stator winding and rotor winding coil, wherein stator winding is by function
Rate winding ppWith control winding pcIt constitutes, the number of pole-pairs p of stator windingr=pp+pc, it is characterised in that: the power winding ppIt adopts
With 2 pole, 3 phase connection mode, and every phase has a pole phase group；The control winding pcUsing 6 pole, 3 phase connection mode, and every phase has
Three pole phase groups；The stator is provided with stator armature core stamping slot (1)；The rotor is provided with armature rotor core stamping
Slot (2).
2. a kind of brushless dual-feed motor according to claim 1, which is characterized in that the stator armature core stamping slot
It (1) is stator armature core stamping rectangular channel, and number is 72, the power winding uses 72 slot, 2 pole, 3 phase connection mode；Phase
The armature rotor core stamping slot (2) answered is armature rotor core stamping rectangular channel, and number is 96.
3. a kind of brushless dual-feed motor according to claim 1, which is characterized in that the stator armature core stamping slot
It (1) is stator armature core stamping rectangular channel, and number is 72, the power winding uses 72 slot, 2 pole, 3 phase connection mode；Phase
The armature rotor core stamping slot (2) answered is armature rotor core stamping rectangular channel, and number is 56.
4. a kind of brushless dual-feed motor according to claim 1, which is characterized in that the stator armature core stamping slot
It (1) is stator armature core stamping peariform slot, and number is 36, the power winding uses 36 slot, 2 pole, 3 phase connection mode；Phase
The armature rotor core stamping slot (2) answered is armature rotor core stamping peariform slot, and number is 44, the rotor windings
Coil uses the mode of connection for becoming span, totally 40 coils.
5. a kind of brushless dual-feed motor according to claim 2 or 3, which is characterized in that each coil of power winding
The number of turns is 34, coil spread Y=29, totally 36 coils.
6. a kind of brushless dual-feed motor according to claim 2 or 3, which is characterized in that each coil of control winding
The number of turns is 3, coil spread Y=10, totally 72 coils.
7. a kind of brushless dual-feed motor according to claim 2, which is characterized in that described rotor winding coil the number of turns is 1,
Using the mode of connection for becoming span, totally 76 coils.
8. a kind of brushless dual-feed motor according to claim 3, which is characterized in that each coil of rotor winding coil
The number of turns is 1, using the mode of connection for becoming span, totally 64 coils.
9. a kind of brushless dual-feed motor according to claim 4, which is characterized in that each coil turn of power winding
It is 16, coil spread Y=15 is located at the top of the stator armature core stamping peariform slot.
10. a kind of brushless dual-feed motor according to claim 4, which is characterized in that each coil turn of control winding
Number is 10, coil spread Y=5, is located at the stator armature core stamping pyriform trench bottom.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108448759A (en) * | 2018-05-21 | 2018-08-24 | 广东上水能源科技有限公司 | A kind of brushless dual-feed motor |
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| CN108448759A (en) * | 2018-05-21 | 2018-08-24 | 广东上水能源科技有限公司 | A kind of brushless dual-feed motor |
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Effective date of registration: 20231107 Address after: Q1181, Room 103, No. 137 Heguang Road, Tianhe District, Guangzhou City, Guangdong Province, 510000 Patentee after: Guangzhou Yizhi Environmental Protection Technology Co.,Ltd. Address before: 510000 room G315, No. 201 Kezhu Road, Science City, high tech Industrial Development Zone, Guangzhou, Guangdong Patentee before: GUANGDONG SHANGSHUI ENERGY TECHNOLOGY Co.,Ltd. |
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