CN204721115U - A kind of stator structure of double-rotor radial magnetic field permanent magnet motor - Google Patents
A kind of stator structure of double-rotor radial magnetic field permanent magnet motor Download PDFInfo
- Publication number
- CN204721115U CN204721115U CN201520478278.XU CN201520478278U CN204721115U CN 204721115 U CN204721115 U CN 204721115U CN 201520478278 U CN201520478278 U CN 201520478278U CN 204721115 U CN204721115 U CN 204721115U
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- Prior art keywords
- stator
- center line
- motor
- auxiliary tank
- permanent magnet
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- 238000004804 winding Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 3
- 230000010349 pulsation Effects 0.000 abstract 1
- 230000009977 dual effect Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- Brushless Motors (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The stator structure of double-rotor radial magnetic field permanent magnet motor of the present utility model, comprises stator yoke, stator tooth, stator winding wire casing, stator winding, and the rectangle auxiliary tank be provided with in the middle part of the stator tooth top cooperatively interacted.By adjustment stator winding wire casing along the distribution situation on stator core internal and external circumference, thus change two parts inside and outside motor produce the phase relation of cogging torque, the effect of cancelling out each other can be realized between the two, and in the middle part of each stator tooth top, set up rectangle auxiliary tank specially, improve the number of times of the minimum subharmonic of cogging torque.In general reduce the pulsation of motor cogging torque, improve operating efficiency and the stability of motor.
Description
Technical field
The utility model relates to a kind of stator structure of double-rotor radial magnetic field permanent magnet motor, is particularly useful for the drive system of all kinds of high-efficiency and energy-saving type industrial department.
Background technology
The structure of dual rotor permanent magnetic motor is combined by an internal rotor permanent-magnetic motor and another outer-rotor permanent magnet motor, and both share same stator.The magnetic direction of double-rotor radial magnetic field permanent magnet motor, perpendicular to rotating shaft, is different from motor in axial magnetic field.(without specified otherwise, hereinafter described dual rotor permanent magnetic motor refers in particular to double-rotor radial magnetic field permanent magnet motor).Particularly it has very high power density and torque density to dual rotor permanent magnetic motor, thus under permanent magnetic materials such as adopting the ferrite of relative low price reduces the prerequisite of manufacturing cost, still can ensure that motor has relatively high efficiency and Driving Torque.This characteristic of dual rotor permanent magnetic motor, makes the development in its future can alleviate the manufacturing cost of magneto and the contradiction of performance to a great extent.
Be analogous to traditional single-rotor motor, tooth slot structure intrinsic on dual rotor permanent magnetic motor stator respectively with the interphase interaction of inner and outer rotors permanent magnet, produce the tangential component of active force fluctuation inevitably will cause cogging torque (being synthesized by inside and outside two parts cogging torque), thus reduce the smoothness of motor output torque, add noise and vibration, have a strong impact on positioning precision and the servo performance of motor.
Utility model content
The utility model is intended to, for the deficiencies in the prior art part, propose a kind of stator structure of dual rotor permanent magnetic motor, by changing the structure of stator teeth groove aspect, realizes the suppression to cogging torque, improves operating efficiency and the stability of motor.The special construction of dual rotor permanent magnetic motor, determining its total cogging torque is synthesized by inside and outside two parts cogging torque, by changing the phase relation of inside and outside two parts torque, can realize the effect of cancelling out each other between the two, then the cogging torque that motor is total can obtain reduction to a certain extent.
For realizing above-mentioned technical goal, the utility model proposes a kind of stator structure of dual rotor permanent magnetic motor, comprising stator yoke, stator tooth, stator winding wire casing, stator winding, and the rectangle auxiliary tank be provided with in the middle part of the stator tooth top cooperatively interacted.Described stator winding wire casing comprises the multiple winding wire slots (water jacket) along excircle unshakable in one's determination is evenly provided with respectively, and along multiple winding wire slots (inside groove) that iron core inner circle week is evenly provided with.Described stator winding wire casing is along being uniformly distributed and defining described stator tooth circumferentially unshakable in one's determination, and being wherein uniformly distributed of water jacket defines outer surface stator tooth, and being uniformly distributed of inside groove defines inner surface stator tooth.Described stator winding distributes in the form of a ring, is wound in inside and outside stator in wire casing, and namely two effective edges of each coil are positioned in interior water jacket respectively, so can shorten winding overhang length to the full extent, reduces end leakage reactance, raises the efficiency.
Stator winding wire casing is transformed along the distribution situation on stator core internal and external circumference by the utility model, be made into a kind of water jacket center line and inside groove center line and be no longer positioned at structure on same radial direction, namely the structure that formed outer surface stator tooth and inner surface stator tooth are dislocatedly distributed completely along circumference unshakable in one's determination, and in the middle part of each stator tooth top, set up rectangle auxiliary tank specially.
Further, described structure lower outside groove center line and the center line of inner surface stator tooth corresponding to it will be positioned on same radial direction; Under described structure, inside groove center line and the center line of outer surface stator tooth corresponding to it will be positioned on same radial direction.
Further, described rectangle auxiliary tank is have one in the middle part of each stator tooth top, the groove depth of auxiliary tank be generally no more than its be positioned at 1/10 of the stator slot degree of depth, the groove width of auxiliary tank be generally no more than its be positioned at 1/5 of the stator facewidth.
The beneficial effects of the utility model are: the stator structure of (1) traditional dual rotor permanent magnetic motor is that the center line of interior water jacket is positioned on same radial direction, cause the phase place of two parts cogging torque inside and outside motor consistent, thus be greater than wherein any portion in the amplitude of two parts cogging torque caused total cogging torque after superposition; Adopt the stator structure described in this patent, because in it, the center line of water jacket no longer radially aligns, its respective center line radially aligns to the center line of corresponding stator tooth on another circumferential surface on the contrary, therefore the phase place of inside and outside two parts cogging torque is in theory by difference 180 degree, after superposition, total cogging torque will be less than wherein any portion, thus improve the performance of motor; (2) owing to being equipped with rectangle auxiliary tank in the middle part of surfaces externally and internally stator tooth top, the minimum subharmonic number of times of cogging torque can be improved, thus reduce the amplitude of inside and outside two parts cogging torque simultaneously, the effect weakening total cogging torque can be reached further.
Accompanying drawing explanation
Fig. 1 is the stator structure example schematic of dual rotor permanent magnetic motor of the present utility model;
Fig. 2 is the stator teeth groove partial schematic diagram of dual rotor permanent magnetic motor of the present utility model;
Fig. 3 is the stator winding coil connection diagram of dual rotor permanent magnetic motor of the present utility model.
In figure, 1, rotating shaft; 2, stator yoke; 3, outer surface stator tooth; 4, inner surface stator tooth; 5, stator water jacket; 6, stator inside groove; 7, rotor magnetic pole; 8, stator winding; 9, rectangle auxiliary tank; 10, two effective edges of a stator winding coil.
Embodiment
Below in conjunction with the example in accompanying drawing, the utility model is further described.
With reference to shown in Fig. 1, the stator structure of dual rotor permanent magnetic motor of the present utility model, for the stator structure of the dual rotor permanent magnetic motor of 3 phase 24 grooves, it is made up of stator yoke 2, outer surface stator tooth 3, inner surface stator tooth 4, stator water jacket 5, stator inside groove 6, stator winding 8, rectangle auxiliary tank 9.
Described stator water jacket 5 center line and described stator inside groove 6 center line are no longer positioned on same radial direction, and namely formed described outer surface stator tooth 3 is dislocatedly distributed along stator core circumference completely with described inner surface stator tooth 4.
Described rectangle auxiliary tank 9 has one in the middle part of each stator tooth top.
With reference to shown in Fig. 2, described stator water jacket 5 center line and the center line of inner surface stator tooth 4 corresponding to it will be positioned on same radial direction; Described stator inside groove 6 center line and the center line of outer surface stator tooth 3 corresponding to it will be positioned on same radial direction.The groove depth of described auxiliary tank 9 be generally no more than its be positioned at 1/10 of the stator slot degree of depth, the groove width of described auxiliary tank be generally no more than its be positioned at 1/5 of the stator facewidth.
With reference to shown in Fig. 3, in the water jacket that two effective edges 10 of a stator winding coil are positioned over stator respectively and inside groove.
Claims (3)
1. a double-rotor radial magnetic field permanent magnet motor stator structure, is characterized in that: it comprises stator yoke (2), outer surface stator tooth (3), inner surface stator tooth (4), stator water jacket (5), stator inside groove (6), stator winding (8), rectangle auxiliary tank (9); Described stator water jacket (5) center line and described stator inside groove (6) center line are no longer positioned on same radial direction, namely formed described in outer surface stator tooth (3) and described inner surface stator tooth (4) be dislocatedly distributed completely along stator core circumference.
2. double-rotor radial magnetic field permanent magnet motor stator structure according to claim 1, is characterized in that: described stator water jacket (5) center line and the center line of inner surface stator tooth (4) corresponding to it will be positioned on same radial direction; Described stator inside groove (6) center line and the center line of outer surface stator tooth (3) corresponding to it will be positioned on same radial direction.
3. double-rotor radial magnetic field permanent magnet motor stator structure according to claim 1, it is characterized in that: described rectangle auxiliary tank (9) is for having one in the middle part of each stator tooth top, the groove depth of auxiliary tank be generally no more than its be positioned at 1/10 of the stator slot degree of depth, the groove width of auxiliary tank be generally no more than its be positioned at 1/5 of the stator facewidth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520478278.XU CN204721115U (en) | 2015-07-06 | 2015-07-06 | A kind of stator structure of double-rotor radial magnetic field permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520478278.XU CN204721115U (en) | 2015-07-06 | 2015-07-06 | A kind of stator structure of double-rotor radial magnetic field permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204721115U true CN204721115U (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520478278.XU Expired - Fee Related CN204721115U (en) | 2015-07-06 | 2015-07-06 | A kind of stator structure of double-rotor radial magnetic field permanent magnet motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN204721115U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787287A (en) * | 2016-11-24 | 2017-05-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor cogging torque optimization method, electric machine structure and motor |
| CN109742916A (en) * | 2019-02-21 | 2019-05-10 | 郑州大学 | A kind of permanent magnetism list stator and double-rotor disc type electric machine weakening cogging torque |
| WO2020057018A1 (en) * | 2018-09-19 | 2020-03-26 | 珠海格力电器股份有限公司 | Motor stator, motor, and bus |
| CN110994822A (en) * | 2019-12-31 | 2020-04-10 | 郑州轻工业大学 | Stator structure with self-adaptive magnetic field correction capability |
-
2015
- 2015-07-06 CN CN201520478278.XU patent/CN204721115U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787287A (en) * | 2016-11-24 | 2017-05-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor cogging torque optimization method, electric machine structure and motor |
| CN106787287B (en) * | 2016-11-24 | 2023-06-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor cogging torque optimization method, motor structure and motor |
| WO2020057018A1 (en) * | 2018-09-19 | 2020-03-26 | 珠海格力电器股份有限公司 | Motor stator, motor, and bus |
| US11575290B2 (en) | 2018-09-19 | 2023-02-07 | Gree Electric Appliances, Inc. Of Zhuhai | Motor stator with tooth crest air gap, motor and bus |
| CN109742916A (en) * | 2019-02-21 | 2019-05-10 | 郑州大学 | A kind of permanent magnetism list stator and double-rotor disc type electric machine weakening cogging torque |
| CN110994822A (en) * | 2019-12-31 | 2020-04-10 | 郑州轻工业大学 | Stator structure with self-adaptive magnetic field correction capability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20151021 Termination date: 20160706 |