CN108880051A - A kind of design method of alternating-current brushless double feedback electric engine and its wound rotor Distributed Winding - Google Patents
A kind of design method of alternating-current brushless double feedback electric engine and its wound rotor Distributed Winding Download PDFInfo
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- CN108880051A CN108880051A CN201810984714.9A CN201810984714A CN108880051A CN 108880051 A CN108880051 A CN 108880051A CN 201810984714 A CN201810984714 A CN 201810984714A CN 108880051 A CN108880051 A CN 108880051A
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- 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
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Abstract
The invention discloses a kind of alternating-current brushless double feedback electric engine wound rotor winding design methods of number of pole-pairs ratio.This winding is by the double-deck sub- winding of a two-phase and the compound 3 layers of winding of the two-phase constituted of a sub- winding of two-phase single layer, all coils equal turn numbers.Specifically design method includes：First according to few number of pole-pairsp 1Determine the double-deck sub- winding of the two-phase of 90 ° of electrical angles of a mutual deviation, this sub- every phase of winding be allocated as two half-phases, every phase respectively retains a half-phase, another half-phase is intercoursed, and group is combined into the double-deck sub- winding of a new two-phase, then further according top 1Determine the sub- winding of two-phase single layer of 90 ° of electrical angles of a mutual deviation, finally by after the series connection of the double-deck sub- winding of new two-phase and this sub- winding of two-phase single layer, the leading-out terminal of all winding branches is linked together by end ring, compound to be formed in number of pole-pairsp 1And number of pole-pairsp 23 layers of winding of new two-phase of 90 ° of electrical angles of lower mean difference.The electrical angle between coil count and pitch contained by each sub- winding and two sub- winding phase axis is adjusted, the overall performance of winding can be made to reach best.
Description
Technical field
The invention belongs to alternating-current brushless double feedback electric engine technical fields, more particularly, to a kind of alternating-current brushless double feedback electric engine
And its design method of wound rotor winding.
Background technique
Brushless dual-feed motor is powered respectively using electric network source and variable-frequency power sources, reliable for operation, it is desirable that variable-frequency power sources hold
The features such as smaller is measured, can be become with the operation of motor frequency change mode of speed regulation and generator for wind-force or waterpower
Fast constant frequency generation etc..
Brushless dual-feed motor have two different numbers of pole-pairs and, therefore be generally disposed on stator number of pole-pairs be respectively and
Double winding, be corresponding to it, rotor also require and meanwhile have number of pole-pairs and, and require looked over from rotor side, both poles
The corresponding rotating excitation field of logarithm turns to opposite.
There is brushless dual-feed motor the key of superperformance to be rotor.The specific rotor structure of Recent study mainly has
Two kinds, one is reluctance rotor, the structure of similar salient pole is made in rotor core, thereon without any conductor；Another kind is " same
Heart cage " rotor, rotor slot is interior to be placed with multiple respectively electrical independent loop ring cage modle windings by " concentrically nested " mode, both
The it is proposed of rotor structure has pushed brushless dual-feed motor theoretical and the progress of application study.But both rotor structures are current
It is big there is also Gas-gap Magnetic Field Resonance Wave content and with load variations, noise and vibrate the defects of big.
To overcome drawbacks described above, Chinese patent CN200910061297, CN201110345871, CN201210306373,
ZL201511003984.X etc. describes a kind of phase-wound rotor brushless dual-feed motor.This brushless double-fed machine rotor uses tooth
Harmonic principle design, coil count and distribution form and span and the number of turns etc. can be with flexible choices, and harmonic content is small, because
And it might have more preferable performance.But on the other hand, this wound rotor winding can choose compared with conventional winding
Winding scheme number it is more, design method is relative complex with the mode of connection, lack of standardization, the terminals that are easy that there are coil end structures
The problems such as misaligned.
In addition, the number of pole-pairs of this rotor winding and, because there are many selection mode, for example, take number of pole-pairs ratio or
Deng.Wherein number of pole-pairs ratio, because ultimate ratio is larger, especially for the motor of large capacity, wound rotor winding coil the number of turns is less,
It must be made of rectangular conductor, the irregular problem of coil end structure shape will be protruded more and will limit its application.
Summary of the invention
A kind of large capacity alternating-current brushless double-fed is provided present invention aims at number of pole-pairs ratio is directed to for the defect of technology
The design and fabrication method of motor line winding rotor winding.
Stator winding has in alternating-current brushless double feedback electric engine of the present inventionp 1Withp 2Two different numbers of pole-pairs are extremely right
Number ratio.Rotor windings are designed according to slot ripples principle, are answered by the double-deck sub- winding of a two-phase and a sub- winding of two-phase single layer
The 3 layers of winding of two-phase constituted are closed, it is identical as stator winding, havep 1Withp 2Two different numbers of pole-pairs, phase winding circuitry number is,
Self-contained is closed circuit after every phase winding is connected in series by two sub- phase windings, and the coil in two sub- windings can have different pitches,
But all coils the number of turns is identical.
As conventional wound winding, in the biggish situation of capacity, coil turn can be taken as 1, using insulation copper bar system
To make, and can accomplish end construction shape and terminals marshalling, harmonic content is small, and conductor utilization is high,.
The present invention provides a kind of design and fabrication sides of wound rotor winding based on above-mentioned alternating-current brushless double feedback electric engine
Method includes the following steps：
（1）Obtain basic number of pole-pairs and number of pole-pairs ratio；
（2）Obtain the preliminary slot number of rotor, the corresponding coil of every slot, obtain one with 90 ° of electrical angles of mean difference under number of pole-pairs,
It is respectively labeled as the two-phase Double Layer Winding of A and B, at this moment every phase circuitry number is, the corresponding branch of each coil is coupled from short circuit
At closed circuit；
（3）By the preliminary slot number of the rotor, it is further split into more rotor slot numbers, new rotor slot number, wherein to split slot
Coefficient（Positive integer）；
（4）It will（2）Described in coil, each coil is further split into contained coil in coil namely a present branch
Number becomes, this coil is successively spaced slot-pitch angle, and pitch is taken as, and places in rotor slot along rotor circumference；
（5）It will（4）Described in coil be bisected into two groups in order namely a phase winding has been divided into two half-phases now, wherein
Respectively containing a coil in 1st group and the 2nd group every group, the position that this coil is placed in rotor slot is still successively adjacent；
（6）It will（5）Described in two groups of coils, mark in order, the 1st group of A phase and the 2nd group of series connection of B phase, the 1st group of B phase and A
The 2nd group of phase is reversely connected in series afterwards, reconfigures as new A phase and B phase, so one sub- winding of the double-deck two-phase of composition；
（5）It presses（4）The method separately takes a coil, is also split into a coil, this coil pitch is taken as, wherein and it is necessary
Meet formula, be still successively spaced slot-pitch angle, be placed in rotor slot and be connected in series, so constitute another single layer two-phase around
Group；
（6）The phase axis spacing slot-pitch angle of the sub- winding of bilayer and the sub- winding of the single layer（）, by its corresponding phase
Closed circuit is connected into after windings in series；
（7）Split slot coefficient, described two sub- winding phase axis spacing described in adjustment, the coil number and, coil pitch and, so that
The winding coefficient of number of pole-pairs sum is as high as possible, and remaining high order slot ripples magnetomotive force relative magnitude is as small as possible.
For the wiring for simplifying rotor windings, the lead-out wire of all branches, either head end or end can also pass through one
A conductive short circuit ring placed along winding overhang circumference links together.
Detailed description of the invention
Fig. 1 is 44 slot, 2/6 pole rotor windings wiring diagram provided in an embodiment of the present invention, indicates double-deck in doublet frame in figure
The sub- affiliated coil of winding, pitch；The expression affiliated coil of the sub- winding of single layer, pitch, all coils the number of turns are equal in single dotted line frame in figure
For 1 circle.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Below with reference to the specific example implementation that the present invention will be described in detail.
3 layers of wound rotor winding scheme of embodiment design sum
Here, therefore the winding scheme two-phase shares 4 branches, takes, then has.The winding scheme to be designed will by two sons around
The compound composition of group, the two sub- windings one are Double Layer Windings, the other is Single-layer Windings.First determine Double Layer Winding scheme, it is false
Determine, namely every branch contains 8 coils, every phase there are two branches.
Wherein, one branch coil number of A phase is taken as 8,9,10,11,12,13,14,15, therewith another branch of same-phase
Road coil number -30, -31, -32, -33, -34, -35, -36, -37, "-" number indicates to need when connection reversed here；One branch of B phase
Road coil number is taken as 19,20,21,22,23,24,25,26, therewith another branch coil number -41 of same-phase, and -42, -43, -
44, -1, -2, -3, -4.
The coil of every branch is divided into two groups in next step, every group contains a coil.The 1st group of coil number of one article of branch of A phase
Be the 8,9,10,11, the 2nd group of coil number be 12,13,14,15；The 1st group of coil number of another article of branch is -30, -31, -32, -33,
2nd group of coil number is -34, -35, -36, -37.The 1st group of coil number of one article of branch of B phase is the 19,20,21,22, the 2nd group of coil number
It is 23,24,25,26；It is -45, -46 that the 1st group of coil number of another article of branch, which is the -41, -42, -43, -44, the 2nd group of coil number, -
47, -48.
Again by the 1st group of above-mentioned A phase and the 2nd group of series connection of B phase, the 1st group of B phase is reversely connected in series afterwards with the 2nd group of A phase,
It is reassembled as new A phase and B phase.New one branch coil number 8,9,10,11,23,24,25,26 of A phase；Another branch coil
Number coil number is -30, -31, -32, -33, -45, -46, -47, -48；New one branch coil number 19 of B phase, 20,21,22,
34,35,36,37,；Another branch coil coil number is -41, -42, -43, -44, -12, -13, -14, -15, is so constituted
One sub- winding of the double-deck two-phase.
Separately take and, equally, one branch coil number of corresponding A phase takes 11,12,13,14, another branch coil number take-
33, -34, -35, -36；Corresponding one branch coil number of B phase takes 22,23,24,25, and another branch coil number takes -44, and -1, -
2, -3, because this is the sub- winding an of single layer.
The phase axis spacing of the two double-deck sub- windings and the sub- winding of single layer is slot pitch, by each affiliated coil of phase winding branch
After series connection, no matter from beginning to end all branch terminals are linked together by the short-circuit line of closure, the winding scheme finally obtained
Wiring diagram is as shown in Fig. 1.The results are shown in Table 1 for the analysis of winding mmf harmonics in attached drawing 1, it can be seen that winding coefficient
It is 0.5048, winding coefficient 0.7478, and remaining harmonic content is respectively less than 4%.
1 44 slot of table, 3 layers of winding mmf harmonics analysis
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to limit
The present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in this
Within the protection scope of invention.
Claims (3)
1. a kind of alternating-current brushless double feedback electric engine multiphase rotor windings, which is characterized in that this winding is by the double-deck son of a two-phase
3 layers of winding of two-phase of winding and a compound composition of the sub- winding of two-phase single layer, have simultaneouslyp 1Withp 2Two different numbers of pole-pairs,
Its number of pole-pairs ratio is that self-contained is closed circuit after every phase winding is connected in series by two sub- phase windings, and the coil in the two sub- windings has
Different pitches, but all coils the number of turns is identical.
2. a kind of design method based on alternating-current brushless double fed electric machine rotor winding described in claim 1, which is characterized in that packet
Include following step：
（1）Obtain basic number of pole-pairs and number of pole-pairs ratio；
（2）Obtain the preliminary slot number of rotor, the corresponding coil of every slot, obtain one with 90 ° of electrical angles of mean difference under number of pole-pairs,
It is respectively labeled as the two-phase Double Layer Winding of A and B, at this moment every phase circuitry number is, each coil is coupled to 1 from short circuit and is closed back
Road；
（3）By the preliminary slot number of the rotor, it is further split into more rotor slot numbers, new rotor slot number, wherein to split slot
Coefficient（Positive integer）；
（4）It will（2）Described in coil, each coil is further split into coil, this coil is successively spaced slot-pitch angle, section
Away from being taken as, placed in rotor slot along rotor circumference；
（5）It will（4）Described in coil be bisected into two groups, the 1st group and the 2nd group in order respectively containing a coil, this coil exists
The position placed in rotor slot is still successively adjacent；
（6）It will（5）Described in two groups of coils, the 1st group of A phase and the 2nd group of series connection of B phase, the 1st group of B phase and the 2nd group of A phase it is anti-
It is connected in series backward, is reassembled as new A phase and B phase, so constitute the sub- winding of the double-deck two-phase；
（5）It presses（4）The method separately takes a coil, is also split into a coil, this coil pitch is taken as, wherein and it is necessary
Meet formula, be still successively spaced slot-pitch angle, be placed in rotor slot and be connected in series, so constitute another single layer two-phase around
Group；
（6）The phase axis spacing slot-pitch angle of the sub- winding of bilayer and the sub- winding of the single layer（）, correspond to phase winding series connection
After be coupled to closed circuit；
（7）Split slot coefficient, described two sub- winding phase axis spacing described in adjustment, the coil number and, coil pitch and, so that
The winding coefficient of number of pole-pairs sum is as high as possible, and remaining high order slot ripples magnetomotive force relative magnitude is as small as possible.
3. all lead-out wires of each branch of winding are connected to by one along the conductive short circuit ring that winding overhang circumference is placed
Together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810984714.9A CN108880051A (en) | 2018-08-28 | 2018-08-28 | A kind of design method of alternating-current brushless double feedback electric engine and its wound rotor Distributed Winding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810984714.9A CN108880051A (en) | 2018-08-28 | 2018-08-28 | A kind of design method of alternating-current brushless double feedback electric engine and its wound rotor Distributed Winding |
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| Publication Number | Publication Date |
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| CN108880051A true CN108880051A (en) | 2018-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810984714.9A Withdrawn CN108880051A (en) | 2018-08-28 | 2018-08-28 | A kind of design method of alternating-current brushless double feedback electric engine and its wound rotor Distributed Winding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818442A (en) * | 2019-03-21 | 2019-05-28 | 哈尔滨理工大学 | A kind of alternating-current brushless double feedback electric engine |
| CN111371208A (en) * | 2020-03-18 | 2020-07-03 | 金路达集团有限公司 | Alternating current brushless double-fed motor and design method of winding rotor distributed winding thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801266A (en) * | 2012-08-27 | 2012-11-28 | 华中科技大学 | Brushless double-fed motor wound rotor winding and manufacturing method thereof |
-
2018
- 2018-08-28 CN CN201810984714.9A patent/CN108880051A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801266A (en) * | 2012-08-27 | 2012-11-28 | 华中科技大学 | Brushless double-fed motor wound rotor winding and manufacturing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818442A (en) * | 2019-03-21 | 2019-05-28 | 哈尔滨理工大学 | A kind of alternating-current brushless double feedback electric engine |
| CN111371208A (en) * | 2020-03-18 | 2020-07-03 | 金路达集团有限公司 | Alternating current brushless double-fed motor and design method of winding rotor distributed winding thereof |
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Application publication date: 20181123 |