CN112865380A - Novel connecting structure of stator winding of five-phase asynchronous motor - Google Patents
Novel connecting structure of stator winding of five-phase asynchronous motor Download PDFInfo
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- CN112865380A CN112865380A CN202110331853.3A CN202110331853A CN112865380A CN 112865380 A CN112865380 A CN 112865380A CN 202110331853 A CN202110331853 A CN 202110331853A CN 112865380 A CN112865380 A CN 112865380A
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- winding
- winding part
- star
- phase asynchronous
- asynchronous motor
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- 238000004804 winding Methods 0.000 title claims abstract description 188
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 5
- 238000010168 coupling process Methods 0.000 claims 5
- 238000005859 coupling reaction Methods 0.000 claims 5
- 239000002356 single layer Substances 0.000 claims 1
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- 239000003302 ferromagnetic material Substances 0.000 abstract 1
- 230000006698 induction Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000010349 pulsation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007704 transition Effects 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
- 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
Abstract
The invention relates to a novel five-phase motor winding connection structure, which comprises ten winding parts: the winding device comprises an a winding part, a B winding part, a C winding part, a D winding part, an E winding part, an A winding part, a B winding part, a C winding part, a D winding part and an E winding part. The winding part a, the winding part c, the winding part e, the winding part b and the winding part d are sequentially connected end to form a pentagram structure with a regular pentagram cross section. The five angles of the five-pointed star structure are sequentially connected with the first ends of the winding part A, the winding part B, the winding part C, the winding part D and the winding part E to form star connection. A winding portion, B winding portion, C winding portion, D winding portion, the second end of E winding portion is for drawing forth the end, external power supply. Compared with the traditional star-type five-phase motor winding connection mode, the five-phase motor winding connection mode has the advantages that low-order harmonics are well eliminated, electromagnetic noise and iron loss are reduced, the motor vibration problem is improved, ferromagnetic saturation of the motor can be reduced by injecting third-order harmonics, and the utilization rate of ferromagnetic materials is improved.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a novel five-phase asynchronous motor winding structure.
Background
The rapid development of the motor field reflects the increasingly strong comprehensive national force of China, wherein induction motors are most widely applied, along with the rapid development of motor technology, the requirement on the stability of the motors is higher and higher, particularly a driving device of military equipment, multi-phase induction motors are rapidly developed, the multi-phase induction motors have the advantages of high reliability, simple structure, easiness in maintenance and the like, and the induction motors become the first choice of large-capacity motors nowadays. The five-phase induction motor has more phases than a three-phase motor, and the phase transition of the winding can be reduced by increasing the number of the phases of the winding, so that the harmonic wave of the five-phase induction motor is reduced, and the amplitude is reduced. The iron loss of the motor is reduced, the electromagnetic torque of the motor is improved, the noise and the vibration of the motor are reduced, and the motor has good environmental protection value. The existing five-phase asynchronous induction motor has many connection modes, the five-phase asynchronous induction motor is different from another novel winding structure with the publication number of CN107579616A, and compared with the winding structure, the five-phase asynchronous induction motor has the advantages of good starting performance, small torque pulsation and small circulation among windings.
Disclosure of Invention
The invention has simple structure and aims to provide a winding connection mode capable of inhibiting harmonic waves of a five-phase asynchronous motor.
The object of the present invention can be achieved by the following technical means.
The winding device comprises an a winding part, a B winding part, a C winding part, a D winding part, an E winding part, an A winding part, a B winding part, a C winding part, a D winding part, ten winding parts of the E winding part, wherein the a winding part, the C winding part, the E winding part, the B winding part and the D winding part are sequentially connected end to form a five-pointed star structure with a regular five-pointed star cross section, and five corners of the five-pointed star structure are sequentially connected with the A winding part, the B winding part, the C winding part, the D winding part and a first end of the E winding part to form a star connection, and a second end of the A winding part, the B winding part, the C winding part, the D winding part and the E winding part is a leading-out end.
Furthermore, the second ends of the A winding part, the B winding part, the C winding part, the D winding part and the E winding part are connected with the motor lead.
Furthermore, the second ends of the winding part A, the winding part B, the winding part C, the winding part D and the winding part E extend out of the center of the regular pentagram structure.
Further, in the case of the same wire, the current of the star winding part is 2sin (360/m) times the current of the five-pointed star winding part, and the number of turns of the five-pointed star winding part is 2sin (360/m) times the number of turns of the star winding part.
Further, a slot angle offset is formed between the five-pointed star winding part and the star winding part.
Further, all adjacent winding parts of the star-shaped structure are separated by four pitch angles.
Furthermore, four groove pitch angles are arranged between all adjacent winding parts of the five-pointed star structure.
Further, the wire diameter and the material of the five-phase asynchronous motor winding are the same, and the insulating material including the enameled wire is also the same.
Compared with the prior art, the invention has the following beneficial effects.
The winding diagram is combined for explaining that compared with the winding connection mode of fig. 3, the winding connection mode of fig. 1 has smaller air gap flux density harmonic distortion rate, compared with the winding structure of fig. 3, the novel winding structure has smaller motor torque pulsation, and compared with the winding structure of fig. 3, the novel winding structure has better starting performance.
The invention has simple structure, convenient operation and engineering application significance and popularization value.
Drawings
FIG. 1 is a connection diagram of the novel five-phase asynchronous motor winding of the present invention.
Fig. 2 is a winding layout diagram of the novel five-phase asynchronous motor.
Fig. 3 is a winding connection diagram of a five-phase motor.
Detailed Description
The invention will be further described with reference to the accompanying drawings, and it is to be noted that the following description is for the purpose of understanding the invention and is not intended to limit the invention, and the invention is also applicable to five-phase asynchronous motors with other pole slot combinations.
The connection mode of ten winding parts of the novel five-phase asynchronous motor is described with reference to fig. 1-2: each winding part is distributed with 4 slots to form two coil groups which are connected in series, and the specific connection mode is as follows: a winding part is formed by connecting 32 slots, 2 slots, 12 slots and 22 slots in sequence, wherein 32 slots and 2 slots form a coil, 12 slots and 22 slots form a coil, b winding part is formed by connecting 36 slots, 6 slots, 16 slots and 26 slots in sequence, wherein 36 slots and 6 slots form a coil, 16 slots and 26 slots form a coil, c winding part is formed by connecting 40 slots, 10 slots, 20 slots and 30 slots in sequence, wherein 40 slots and 10 slots form a coil, 20 slots and 30 slots form a coil, d winding part is formed by connecting 4 slots, 14 slots, 24 slots and 34 slots in sequence, wherein 4 slots and 14 slots form a coil, 24 slots and 34 slots form a coil, e winding part is formed by connecting 8 slots, 18 slots, 28 slots and 38 slots in sequence, wherein slot No. 8 and slot No. 18 form a coil and slot No. 28 and slot No. 38 form a coil. The A winding part is formed by connecting a groove 31, a groove 1, a groove 11 and a groove 21 in sequence, wherein the groove 31 and the groove 1 form a coil, the groove 11 and the groove 21 form a coil, the B winding part is formed by connecting a groove 35, a groove 5, a groove 15 and a groove 25 in sequence, wherein the groove 35 and the groove 5 form a coil, the groove 15 and the groove 25 form a coil, the C winding part is formed by connecting a groove 39, a groove 9, a groove 19 and a groove 29 in sequence, wherein the groove 39 and the groove 9 form a coil, the groove 19 and the groove 29 form a coil, the D winding part is formed by connecting a groove 3, a groove 13, a groove 23 and a groove 33 in sequence, wherein the groove 3 and the groove 13 form a coil, the groove 23 and the groove 33 form a coil, the E winding part is formed by connecting a groove 7, a groove 17, a groove 27 and a groove 37 in sequence, wherein slot No. 7 and slot No. 17 constitute a coil and slot No. 27 and slot No. 37 constitute a coil.
Further, a groove leading-out end of No. 31 of the A winding part, a groove leading-out end of No. 32 of the a winding part, a groove leading-out end of No. 30 of the C winding part, three ends are connected, a groove leading-out end of No. 35 of the B winding part, a groove leading-out end of No. 36 of the B winding part, a groove leading-out end of No. 34 of the D winding part, three ends are connected, a groove leading-out end of No. 39 of the C winding part, a groove leading-out end of No. 40 of the C winding part, a groove leading-out end of No. 38 of the E winding part, three ends are connected, a groove leading-out end of No. 3 of the D winding part, a groove leading-out end of No. 4 of the D winding part, a groove leading-out end of No. 22 of the a winding part, three ends are connected.
In this embodiment, the winding part a, the winding part B, the winding part C, the winding part D, the winding part E and the winding part A, the winding part B, the winding part C, the winding part D, the winding part E compare, and the number of winding turns is inequality.
In this embodiment, the number of pole pairs of the five-phase asynchronous motor is 2, the number of stator slots is 40, the number of rotor slots is 34, the number of stator slots is 2 times of the total number of coils in the stator slots, and the span of each coil is exactly one fourth of the number of stator slots.
In the embodiment, the wire diameter and the material of the five-phase asynchronous motor winding are the same, and the insulating material including the enameled wire is also the same.
The above embodiments are merely examples of the present invention, and the present invention is not limited to the above embodiments, and many variations are possible within the scope of the present invention.
Claims (10)
1. The utility model provides a novel connection structure of five looks asynchronous motor stator windings which characterized in that: stator 40 groove, the number of poles is 4 poles, and single-layer winding includes: the winding device comprises an a winding part, a B winding part, a C winding part, a D winding part, an E winding part, an A winding part, a B winding part, a C winding part, a D winding part, ten winding parts of the E winding part, wherein the a winding part, the C winding part, the E winding part, the B winding part and the D winding part are sequentially connected end to form a five-pointed star structure with a regular five-pointed star cross section, and five corners of the five-pointed star structure are sequentially connected with the A winding part, the B winding part, the C winding part, the D winding part and a first end of the E winding part to form a star connection, and a second end of the A winding part, the B winding part, the C winding part, the D winding part and the E winding part is a leading-out end.
2. The novel stator winding coupling structure of a five-phase asynchronous motor according to claim 1, characterized in that: the first end of the winding part A, the second end of the winding part B, the third end of the winding part C, the fourth end of the winding part D and the fourth end of the winding part E are connected with a motor lead.
3. The novel stator winding coupling structure of a five-phase asynchronous motor according to claim 1, characterized in that: under the same condition of the wires, the current of the star winding part is 2sin (360/m) times of that of the five-pointed star winding part, and the number of turns of the five-pointed star winding part is 2sin (360/m) times of that of the star winding part.
4. The novel stator winding coupling structure of a five-phase asynchronous motor according to claim 1, characterized in that: compared with the space magnetic potential harmonic frequency of v =20k-1 and v =20k +1(k =1,2,3,4, …), namely the space harmonic frequency is 1, 19, 21, 39, 41 and the like in sequence, the space magnetic potential harmonic frequency of the traditional star five-phase motor satisfies v =10k-1 and v =10k +1(k =1,2,3,4, …), namely the space harmonic frequency is 1, 9, 11, 19, 21, … in sequence, the novel winding structure effectively eliminates 9 and 11 harmonics, reduces temperature rise and improves efficiency.
5. The novel stator winding connection structure of the five-phase asynchronous motor according to claim 1, characterized in that: the five-pointed star structure and the star structure have a groove pitch angle offset.
6. The novel stator winding connection structure of the five-phase asynchronous motor according to claim 1, characterized in that: and four groove pitch angles are staggered among all adjacent winding parts of the five-pointed star structure.
7. The novel stator winding connection structure of the five-phase asynchronous motor according to claim 1, characterized in that: and four groove pitch angles are staggered among all adjacent winding parts of the star-shaped structure.
8. A winding for a five-phase asynchronous machine according to any one of claims 1 to 5, characterized in that the wire diameter and the material of said winding are the same, including the insulating material of the enameled wire.
9. The novel stator winding coupling structure of a five-phase asynchronous motor according to claim 1, characterized in that: compared with the winding form in the figure 3, the winding form has smaller harmonic distortion rate, and compared with the winding form in the figure 3, the winding form in the figure 2 has smaller electromagnetic noise and smaller iron loss for the whole motor.
10. The novel stator winding coupling structure of a five-phase asynchronous motor according to claim 1, characterized in that: the winding form of fig. 2 has less torque ripple and better start-up performance than the winding form of fig. 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110331853.3A CN112865380A (en) | 2021-03-29 | 2021-03-29 | Novel connecting structure of stator winding of five-phase asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110331853.3A CN112865380A (en) | 2021-03-29 | 2021-03-29 | Novel connecting structure of stator winding of five-phase asynchronous motor |
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| Publication Number | Publication Date |
|---|---|
| CN112865380A true CN112865380A (en) | 2021-05-28 |
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| CN202110331853.3A Pending CN112865380A (en) | 2021-03-29 | 2021-03-29 | Novel connecting structure of stator winding of five-phase asynchronous motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114884252A (en) * | 2022-04-25 | 2022-08-09 | 山东大学 | Multiphase permanent magnet synchronous motor winding design method and motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3345272A1 (en) * | 1983-12-14 | 1985-07-04 | Siemens AG, 1000 Berlin und 8000 München | ANCHOR WINDING FOR A RECTIFIER-POWERED ELECTRIC TURNTABLE MACHINE |
| US20050248229A1 (en) * | 2004-03-31 | 2005-11-10 | Denis Even | Polyphase armature for a rotary electrical machine, and its method of manufacture |
| CN101573853A (en) * | 2006-11-06 | 2009-11-04 | 罗伯特·博世有限公司 | Electric machine |
| CN107579616A (en) * | 2017-10-18 | 2018-01-12 | 哈尔滨理工大学 | A kind of power supply is the asynchronous machine winding of five phases |
-
2021
- 2021-03-29 CN CN202110331853.3A patent/CN112865380A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3345272A1 (en) * | 1983-12-14 | 1985-07-04 | Siemens AG, 1000 Berlin und 8000 München | ANCHOR WINDING FOR A RECTIFIER-POWERED ELECTRIC TURNTABLE MACHINE |
| US20050248229A1 (en) * | 2004-03-31 | 2005-11-10 | Denis Even | Polyphase armature for a rotary electrical machine, and its method of manufacture |
| CN101573853A (en) * | 2006-11-06 | 2009-11-04 | 罗伯特·博世有限公司 | Electric machine |
| CN107579616A (en) * | 2017-10-18 | 2018-01-12 | 哈尔滨理工大学 | A kind of power supply is the asynchronous machine winding of five phases |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114884252A (en) * | 2022-04-25 | 2022-08-09 | 山东大学 | Multiphase permanent magnet synchronous motor winding design method and motor |
| CN114884252B (en) * | 2022-04-25 | 2024-02-20 | 山东大学 | Multiphase permanent magnet synchronous motor winding design method and motor |
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