CN207743838U - A kind of permanent-magnet brushless DC electric machine closed slot stator - Google Patents
A kind of permanent-magnet brushless DC electric machine closed slot stator Download PDFInfo
- Publication number
- CN207743838U CN207743838U CN201820078451.0U CN201820078451U CN207743838U CN 207743838 U CN207743838 U CN 207743838U CN 201820078451 U CN201820078451 U CN 201820078451U CN 207743838 U CN207743838 U CN 207743838U
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- Prior art keywords
- closed slot
- stator
- permanent
- slot stator
- electric machine
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model provides a kind of permanent-magnet brushless DC electric machine closed slot stator.Permanent-magnet brushless DC electric machine closed slot stator assembling with closed slot inner ring and outer ring forms 12 groups of uniformly distributed closed slots, stator winding uses copper strap wire, copper strap wire winding technique is circlewise, it is embedded on the tooth of stator inner ring, across the tooth connecting line of winding links together winding coil, it is arranged in stator end, has difference in height in stator end.The utility model structure novel is easily achieved, assembles simply, and permanent-magnet brushless DC electric machine can effectively weaken cogging torque using closed slot structure, reduce torque ripple, improve performance of the motor when low speed is run.
Description
Technical field
The utility model is related to magneto field, especially a kind of permanent-magnet brushless DC electric machine closed slot stator.
Background technology
Currently, with the development of permanent-magnet material, magneto is since its excellent performance is by extensive use.Due to open slot
Structure is easy to coiling, and the stator structure that most of permanent-magnet brushless DC electric machines use is open slot.When motor no power, notch
In the presence of making air-gap permeance be unevenly distributed, when permanent magnet and stator have relative motion trend, the two sides of permanent magnet it is corresponding by
In a bit of region that one or two armature tooth is constituted, magnetic conductance changes greatly, and neighbouring magnetic field changes so that permanent magnet
The magnetic field energy of air changes between armature tooth, and the variation of magnetic field energy will produce cogging torque.Cogging torque is forever
The build-in attribute of magneto can lead to torque ripple, cause vibration and noise, or even motor covibration can occur, to shadow
Ring runnability when motor low speed.
Invention content
The purpose of this utility model is exactly the shortcoming solved in background technology, provides a kind of split type closed slot knot
Structure weakens the cogging torque of permanent-magnet brushless DC electric machine with this, reduces torque ripple, improves the operation of permanent-magnet brushless DC electric machine
Performance.
In order to achieve the above objectives, the utility model adopts the following technical solution：A kind of permanent-magnet brushless DC electric machine closed slot
Stator, including closed slot stator outer ring, closed slot stator inner ring, ring-shaped winding coil, across the tooth connecting line of winding coil.Closed slot
Stator outer ring and inner ring are formed by punching silicon-steel, and the closed slot stator periphery is equipped with 12 groups of closed slots, closed slot structure altogether
It assembles and realizes with stator outer ring and inner ring, the ring-shaped winding coil uses copper strap wire, and there are connector, the winding in both ends
For across the tooth connecting line of coil for even pressing ring-shaped winding coil, both ends are fluted, and are separated from each other and are arranged in stator end, belong to
Across the tooth connecting line of winding of each phase has difference in height in stator end.
The utility model has the beneficial effects that：Stator structure is novel, is easily achieved, assembles simply.Permanent magnet brushless dc
Machine stator can effectively weaken cogging torque using closed slot structure, reduce torque ripple, improve the runnability of motor.
Description of the drawings
Fig. 1 is closed slot stator overall structure figure
Fig. 2 is closed slot stator outer ring structure
Fig. 3 is closed slot stator inner ring structure
Fig. 4 ring-shaped windings coil 16
Fig. 5 ring-shaped windings coil 19
Fig. 6 is winding connection
Fig. 7 is closed slot stator A phase windings
Fig. 8 is closed slot stator inner ring overall structure figure
Specific implementation mode
The present invention will be further described in detail below in conjunction with the accompanying drawings：
Referring to figs. 1 to Fig. 8, permanent-magnet brushless DC electric machine closed slot stator provided by the utility model, as shown in Figure 1, packet
Include across the tooth company of winding coil in the ring-shaped winding of Fig. 2 closed slot stators outer ring, Fig. 3 closed slot stators inner ring, Fig. 4 and Fig. 5, Fig. 6
Wiring 20, closed slot stator outer ring are formed with closed slot stator inner ring by punching silicon-steel, and the closed slot stator periphery is total
Equipped with 12 groups of closed slots.Have ring-shaped winding coil in closed slot, as shown in Figure 4, Figure 5, ring-shaped winding coil use copper strap wire, two
End has across the tooth connecting line 20 of winding coil in connector 15,17,18, Fig. 6 shown in Fig. 4, Fig. 5 to be used to connect cyclic annular winding wire
Circle, both ends are fluted, and are separated from each other and are arranged in stator end, and across the tooth connecting line 20 of winding for belonging to each phase is fixed in closed slot
There is difference in height in sub- end, belongs to the ring-shaped winding coil of each phase on closed slot stator internal ring gear, between adjacent winding coil
It is linked together by the groove of across the tooth connecting line of winding 20 and the connector 15,17,18 of winding coil, firm welding is formed
The connection type of Fig. 6.Winding is divided into A, B, C three-phase, with reference to Fig. 2, the winding coils of A phases be equidistantly distributed on No. 8, No. 3,14
Number, on No. 11 teeth, No. 8 be tooth A phase windings embedding starting tooth, No. 11 teeth are that embedding terminates tooth；The winding coil of B phases is equidistant
Be distributed on No. 7, No. 4, No. 13, on No. 10 teeth, No. 7 teeth are the embedding starting teeth of A phase windings, and No. 10 teeth are that embedding terminates tooth；C phases
Winding coil be equidistantly distributed on No. 6, No. 3, No. 12, on No. 9 teeth, No. 6 teeth are the embedding starting teeth of C phase windings, and No. 9 teeth are
Embedding terminates tooth.By taking A phases as an example, ring-shaped winding 16 is embedded in No. 8 teeth of closed slot stator inner ring 2, on No. 11 teeth, ring-shaped winding 19
On No. 5 teeth of embedded closed slot stator inner ring 2, No. 14 teeth, groove that the adjacent winding coil of A phases passes through across the tooth connecting line of winding 20
It links together with the connector 15,17,18 of ring-shaped winding coil, firm welding, then winding coil, 5 on No. 8 teeth and No. 5 teeth
Winding coil on number tooth and winding coil, No. 14 teeth and No. 12 teeth on No. 14 teeth has been respectively formed the winding connection of Fig. 6,
It is above to constitute A phase windings, in Fig. 7 22 be A phase windings head end, 23 be the tail end of A phase windings, completes B, C two in aforementioned manners
The closed slot stator inner ring 2 that embedding is completed shown in Fig. 8 and the cooperation of stator outer ring 2 are assembled into Fig. 1 DC permanent-magnetic brushless by phase embedding
Motor closed slot stator.
Claims (1)
1. a kind of permanent-magnet brushless DC electric machine closed slot stator, including closed slot stator outer ring (1), closed slot stator inner ring (2),
Ring-shaped winding coil (16,19), across the tooth connecting line of winding coil (20), closed slot stator outer ring (1), closed slot stator inner ring
(2) it is formed by punching silicon-steel, which is characterized in that the closed slot stator periphery is equipped with 12 groups of closed slots, closed slot knot altogether
Structure is assembled with closed slot stator outer ring (1) and closed slot stator inner ring (2) and is realized, the ring-shaped winding coil is flat using copper
There is a connector (15,17,18) at line, both ends, and across the tooth connecting line of winding coil (20) is for connecting cyclic annular winding coil, and two
It holds fluted, and is separated from each other and is arranged in stator end, belong to across the tooth connecting line of winding (20) of each phase in closed slot stator terminal
There is difference in height in portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820078451.0U CN207743838U (en) | 2018-01-12 | 2018-01-12 | A kind of permanent-magnet brushless DC electric machine closed slot stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820078451.0U CN207743838U (en) | 2018-01-12 | 2018-01-12 | A kind of permanent-magnet brushless DC electric machine closed slot stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207743838U true CN207743838U (en) | 2018-08-17 |
Family
ID=63123287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820078451.0U Expired - Fee Related CN207743838U (en) | 2018-01-12 | 2018-01-12 | A kind of permanent-magnet brushless DC electric machine closed slot stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207743838U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11342801B2 (en) | 2018-12-28 | 2022-05-24 | Ford Global Technologies, Llc | Stator for motor and motor |
-
2018
- 2018-01-12 CN CN201820078451.0U patent/CN207743838U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11342801B2 (en) | 2018-12-28 | 2022-05-24 | Ford Global Technologies, Llc | Stator for motor and 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: 20180817 Termination date: 20190112 |