CN208955775U - A kind of high-voltage brushless double feedback electric engine - Google Patents
A kind of high-voltage brushless double feedback electric engine Download PDFInfo
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- CN208955775U CN208955775U CN201821862544.9U CN201821862544U CN208955775U CN 208955775 U CN208955775 U CN 208955775U CN 201821862544 U CN201821862544 U CN 201821862544U CN 208955775 U CN208955775 U CN 208955775U
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Abstract
The utility model relates to a kind of high-voltage brushless double feedback electric engine stator winding design methods, for the big feature of brushless dual-feed motor harmonic wave, on the basis of two sets of different number of pole-pairs stator winding basic structures of brushless dual-feed motor, propose a kind of low harmony wave stator winding design method, its technical solution further weakens the harmonics of magnetic force using combined type span structure, wherein every set winding is arranged using a variety of spans, relative position between different piece winding can be adjusted according to the needs, other than the short distance effect present in the original winding, also add one due to relative position change caused by short distance effect, and then brushless dual-feed motor harmonic wave magnetomotive force is reduced significantly.
Description
Technical field
The utility model relates to a kind of high-voltage brushless double feedback electric engines.
Background technique
Two sets of stator winding of alternating-current brushless double feedback electric engine can connect common frequency power network and variable-frequency power sources simultaneously, while having and synchronizing electricity
The operation characteristic of machine and asynchronous machine, required frequency inverter capacity is small, reliable for operation, especially the occasion in high voltage grade,
Can be by the low voltage control high pressure of variable-frequency power sources, energy-saving effect is significant, but in the research process of high-voltage brushless double feedback electric engine still
It is so limited by some technical matters, in the research of high-voltage brushless double feedback electric engine, harmonic content is high, and conductor utilization is low
It is a key factor for influencing electric efficiency, traditional pole changing method conductor utilization is not high, and feeder number is more, is easy shape
At circulation, and the asymmetric situation of rotor mmf is easy to appear in implementation process, so as to cause stator double winding electric current
It is asymmetric.
Utility model content
Problem to be solved in the utility model is to provide a kind of high-voltage brushless double feedback electric engine stator winding of low harmonic content
Structure.
The utility model uses following technical scheme in order to achieve the above objectives: propose the high pressure of low harmonic content a kind of without
Brush double feedback electric engine stator winding design method, including two sets of stator winding and a set of rotor windings, wherein two sets of stator winding point
Not Wei power winding and control winding, number of pole-pairs is respectively p1 and p2, wherein the stator winding of two sets of different numbers of pole-pairs is layered row
Cloth, every set winding use combined type coil spread structure, and the different span parts of every set winding can according to need flexible selection
Drop-over connects and is reversely connected concatenated connection type, and the stator winding of two sets of different numbers of pole-pairs realizes INDIRECT COUPLING by rotor.
As an improvement of the above technical solution, the winding of two sets of different numbers of pole-pairs of stator uses double winding design scheme, that
This individually arranges, and the winding of two sets of different numbers of pole-pairs not will do it direct-coupling, and wherein control winding coil is placed in stator slot bottom
Portion, power winding are placed in stator slot top.
As an improvement of the above technical solution, stator odd bin and even bin are arranged the coil of different spans respectively, different
The coil of span is one another in series.
As an improvement of the above technical solution, two kinds of coil spreads of the every set winding of stator use short-chorded coil, two kinds of spans
Unequal, three-phase windings are cascaded respectively, the double short distance windings constituted, in addition to single short distance present in original winding
Except effect, one is also added since double winding is there are short distance effect caused by space quadrature, and then significant is reduced
Brushless dual-feed motor harmonic wave magnetomotive force.
Therefore, the beneficial effects of the utility model are: this high-voltage brushless double feedback electric engine stator winding structure can be effective
Achieve the purpose that reduce motor harmonic content.
Detailed description of the invention
Double short distance winding layout viewings when Fig. 1 is the power winding number of pole-pairs p1=3 of stator slot Z=72.
Double short distance winding layout viewings when Fig. 2 is the control winding number of pole-pairs p2=1 of stator slot Z=72.
Fig. 3 is the specific distribution map of different winding coils in stator slot.
It is as shown in the figure: 1 power winding coil, 2 control winding coils.
Specific embodiment
Below in conjunction with attached drawing, the utility model is described in further detail with specific embodiment.
It is Z=72 that number of stator slots is chosen in the present embodiment, power winding number of pole-pairs Pp=3, control winding number of pole-pairs p1=
1 brushless dual-feed motor, according to double short distance winding constructions of method described in the utility model design, power winding and control winding
It is all made of Y to connect, power winding p1=3 pair pole winding construction is as shown in Figure 1, control winding p2=1 pair pole winding construction such as Fig. 2 institute
Show.
Wherein, the winding of two sets of different numbers of pole-pairs of stator uses double winding design scheme, arranges independent of one another, together
When radiate in view of stator coil, the big coil of span is placed in stator trench bottom, span is small to be placed at the top of stator slot, control
Winding coil is placed in stator trench bottom, and power winding is placed in stator slot top, and specific arrangement is as shown in Figure 3.
Wherein, the even bin in the stator winding arrangement dotted line and the odd bin of bold portion are respectively adopted not
Same span.
Wherein, MgO-ZrO_2 brick is 2 in the power winding scheme, and even bin span is 10, and odd bin span is
8, the every phase of winding of two kinds of different spans successively connect by drop-over.
Wherein, in the control winding winding scheme MgO-ZrO_2 brick be 6, even bin span be 30, odd bin across
Away from being 28, the every phase of winding of two kinds of different spans successively connect by drop-over.
Wherein, the relative space position of the winding of different spans can be with flexible modulation in the every set winding of the stator.
Wherein, two kinds of coil spreads of the every set winding of the stator use short-chorded coil, and two kinds of spans are unequal, constituted
Combined type short distance winding, other than the short distance effect present in the original winding, also add one since space is with respect to position
It sets short distance effect caused by change, and then significant reduces brushless dual-feed motor harmonic wave magnetomotive force.
The above is preferred embodiments of the present invention, and the protection scope of the utility model is not limited to above-mentioned
Illustrate, without departing from the concept of the premise utility, the technical staff of the industry is not on the basis of making the creative labor
A number of simple deductions or replacements can also be made, is regarded as the protection scope of the utility model.
Claims (5)
1. a kind of high-voltage brushless double feedback electric engine, including two sets of stator winding and a set of rotor windings, wherein two sets of stator winding point
Not Wei power winding and control winding, number of pole-pairs is respectively p1 and p2, it is characterised in that: the stator winding of two sets of different numbers of pole-pairs
Storied placement, every set winding use combined type coil spread structure, and the different span parts of every set winding can according to need choosing
It is connected with drop-over and is reversely connected concatenated connection type, the stator winding of two sets of different numbers of pole-pairs realizes INDIRECT COUPLING by rotor.
2. high-voltage brushless double feedback electric engine as described in claim 1, it is characterised in that: the winding of two sets of different numbers of pole-pairs of stator is adopted
With double winding design scheme, arrange independent of one another.
3. high-voltage brushless double feedback electric engine as described in claim 1, it is characterised in that: control winding coil is placed in stator slot bottom
Portion, power winding are placed at the top of stator slot.
4. high-voltage brushless double feedback electric engine as described in claim 1, it is characterised in that: stator odd bin and even bin are arranged respectively
The coil of the coil of different spans, different spans is one another in series, and takes different connection types as needed.
5. high-voltage brushless double feedback electric engine as described in claim 1, it is characterised in that: in the every set winding of stator different spans around
The relative position of group is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821862544.9U CN208955775U (en) | 2018-11-13 | 2018-11-13 | A kind of high-voltage brushless double feedback electric engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821862544.9U CN208955775U (en) | 2018-11-13 | 2018-11-13 | A kind of high-voltage brushless double feedback electric engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208955775U true CN208955775U (en) | 2019-06-07 |
Family
ID=66744618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821862544.9U Expired - Fee Related CN208955775U (en) | 2018-11-13 | 2018-11-13 | A kind of high-voltage brushless double feedback electric engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208955775U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111181470A (en) * | 2020-03-06 | 2020-05-19 | 淄博高新区华科大高效节能电机技术研发中心 | Harmonic suppression method for brushless double-fed motor |
-
2018
- 2018-11-13 CN CN201821862544.9U patent/CN208955775U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111181470A (en) * | 2020-03-06 | 2020-05-19 | 淄博高新区华科大高效节能电机技术研发中心 | Harmonic suppression method for brushless double-fed motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190607 Termination date: 20191113 |