CN104868624A - High-speed permanent-magnet motor rotor with layered permanent magnet structure - Google Patents
High-speed permanent-magnet motor rotor with layered permanent magnet structure Download PDFInfo
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- CN104868624A CN104868624A CN201510141557.1A CN201510141557A CN104868624A CN 104868624 A CN104868624 A CN 104868624A CN 201510141557 A CN201510141557 A CN 201510141557A CN 104868624 A CN104868624 A CN 104868624A
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Abstract
The invention relates to the motor rotor, particularly to a high-speed permanent-magnet motor rotor with a layered permanent magnet structure. The rotor is characterized in that the rotor comprises a rotating shaft (3), a rotor iron core (5), permanent magnets (1), reinforced ribs (2), and magnetic isolation bridges (4). The permanent magnets (1) are embedded into the rotor iron core (5) and are in a multi-layer mode, wherein the number of layers is larger than or equal to 2; each layer of permanent magnet (1) unit is divided into multiple segments, wherein the number of segments is larger than or equal to 2; and the reinforced ribs (2) are arranged among all permanent magnet segments. The reinforced ribs (2) and the magnetic isolation bridges (4) are arranged at the two ends of all layers of the permanent magnet (1); a smaller magnetic isolation bridge (4) is arranged at the permanent magnet layer approaching the outermost side of the rotor; and the magnetic isolation bridge (4) arranged at the inner layer of the permanent magnet are gradually increased. According to the invention, a problem that the rotor strenght is reduced due to too large magnetic isolation bridge arranged at the outer layer of the permanent magnet can be solved; and the leakage flux can be reduced with the dimensions of the magnetic isolation bridges at the inner layer of the permanent magnet.
Description
Technical field
The present invention relates to rotor, relate to a kind of high speed embedded formula permanent magnet machine rotor, this rotor has higher reliability, lower eddy current loss, the features such as less magnetic leakage factor.
Background technology
High-speed electric expreess locomotive due to rotating speed high, power density is large, and volume is little, effectively can save material; Because moment of inertia is less, so dynamic response is very fast; High-speed electric expreess locomotive directly can be connected with working machine or load, eliminates traditional mechanical variable speed device, thus can reduce the efficiency of noise and raising drive system.The research and apply of high-speed electric expreess locomotive meets the economic development needs of energy-saving and emission-reduction, become one of the study hotspot in International Power field at present, be with a wide range of applications in high speed grinding machine, air circulation refrigeration system, accumulated energy flywheel, high speed centrifugation compressor, air blast, Aero-Space etc.
Magneto is so that its structure is simple, power energy density is high, without excitation loss, efficiency advantages of higher, be suitable for high-speed electric expreess locomotive.High-speed high frequency motor design difficulty compared with common electric machine is larger; high-speed electric expreess locomotive rotating speed is up to tens thousand of turns even tens0000 turns per minute; peripheral speed can reach more than 200m/s; rotor strength problem is more outstanding; must take safeguard measure to it because permanent magnet and silicon steel sheet can not bear the tension stress of High Rotation Speed generation, rotor design and processing technology also become one of difficult point of high-speed electric expreess locomotive design.Compared with the mounted magneto in face, interpolation type magneto has less permanent magnetism consumption, less rotor eddy current loss, higher efficiency and simple Finish & Workmanship, therefore the most applicable high-speed electric expreess locomotive, but simultaneously for interior permanent magnet machines, rotor is when High Rotation Speed, permanent magnet and the centrifugal force caused by rotor core quality can act on every magnetic bridge, affect the intensity every magnetic bridge, simultaneously due to conventional internal formula magneto, because permanent magnet is single layer structure, permanent magnet monolithic quality is larger, cause installing hole excessive, have a strong impact on the stress distribution of rotor core, cause the problem that local stress is excessive.Therefore for built-in high-speed permanent magnet motor, reduce rotor perforate and every the impact of magnetic bridge on rotor stress, improving rotor strength, is the problem that solution needed badly by high speed embedded formula magneto.
Summary of the invention
The invention provides a kind of high speed permanent magnet motor rotor of permanent magnet hierarchy, its objective is solution built-in high speed permanent magnet motor rotor in the past under the circumference of the high-speed rotation because permanent magnet monolithic is excessive, the excessive serious reduction rotor reliability of rotor perforate and excessive every magnetic bridge place stress local, thus reduce the problem in rotor operation life-span, reduce the serious problem of interior permanent magnets leakage field simultaneously.
Technical solution of the present invention is as follows:
A high speed permanent magnet motor rotor for permanent magnet hierarchy, described rotor comprises rotating shaft, rotor core, permanent magnet, reinforcement, every magnetic bridge; Permanent magnet is nested in rotor core, and permanent magnet is divided into multilayer, and the number of plies is more than or equal to 2; Every layer of permanent magnet is divided into multistage, and hop count is more than or equal to 2, has reinforcement between every section of permanent magnet; There is reinforcement at the two ends of every layer of permanent magnet and every magnetic bridge; Near the outermost Permanent-magnet layer of rotor, that offers is less every magnetic bridge, and the increasing gradually every magnetic bridge of permanent magnet internal layer.
The high speed permanent magnet motor rotor of described a kind of permanent magnet hierarchy, described rotor number of poles is 2 poles or 4 poles or 6 poles or 8 poles.
The high speed permanent magnet motor rotor of described a kind of permanent magnet hierarchy, described permanent magnet shape is arc opening towards the circular arc of rotor center or rotor center dorsad, or is W type or V-shape structure.
The invention has the beneficial effects as follows:
The high speed permanent magnet motor rotor of a kind of permanent magnet hierarchy of the present invention comprises rotating shaft, rotor core, layering permanent magnet, reinforcement, every magnetic bridge.Wherein permanent magnet is nested in rotor core, rotor core is overrided to form by high strength silicon steel sheet, permanent magnet is divided into multilayer, hierarchy number is more than or equal to 2, quality and the size of every layer of permanent magnet can be reduced, reduce the perforate size of every layer of permanent magnet in rotor core, can reduce conventional monolayers magnet structure due to permanent magnet causes more greatly rotor core perforate excessive, make rotor stress excessive in tapping local, thus have a strong impact on the problem of rotor strength, permanent magnet is divided into sandwich construction, can avoid the phenomenon that individual layer magnet structure is concentrated at tapping stress.In addition, every layer of magnet structure is divided into multistage again, and hop count is more than or equal to 2, can reduce the quality of monolithic permanent magnet, and larger reduction monolithic permanent magnet quality is to rotor core and the influence degree every magnetic bridge stress.Between every section of permanent magnet and every layer of permanent magnet two ends all have non-magnetic reinforcement, when High Rotation Speed, reinforcement can the larger stress of bearing, permanent magnet can be reduced to the influence degree every magnetic bridge and rotor core stress, avoid every magnetic bridge place stress local excessive thus reduce the problem of rotor life, simultaneously non-magnetic reinforcement has the effect every magnetic, can reduce permanent magnet segmentation and the leakage field problem that causes.The two ends of every layer of permanent magnet offer every magnetic bridge, near the outermost Permanent-magnet layer of rotor, that offers is less every magnetosphere, and the increasing gradually every magnetic bridge of internal layer, because the outer field centrifugal force of permanent magnet is larger, the intensity of rotor core is reduced every magnetic bridge compared with conference if offered, and the centrifugal force of permanent magnet internal layer is less gradually, the size every magnetic bridge can be strengthened, so both can avoid offering excessive because permanent magnet is outer every magnetic bridge and reducing the problem of rotor strength, reduce permanent magnet leakage field problem by what strengthen permanent magnet internal layer gradually every magnetic bridge size again simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1. permanent magnet, 2. reinforcement, 3. rotating shaft, 4. every magnetic bridge, 5. rotor core.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
The invention provides a kind of high speed permanent magnet motor rotor, comprise rotating shaft 3, rotor core 5, permanent magnet 1, reinforcement 2, every magnetic bridge 4.Layering permanent magnet 1 is nested in rotor core 5, rotor core 5 is overrided to form by high strength silicon steel sheet, permanent magnet 1 is divided into sandwich construction, hierarchy number is more than or equal to 2, every layer of permanent magnet 1 is divided into multistage, hop count is more than or equal to 2, between every section of permanent magnet 1, there is non-magnetic reinforcement 2, there is reinforcement 2 at every layer of permanent magnet 1 two ends and every magnetic bridge 4, outermost Permanent-magnet layer, that offers is less every magnetic bridge 4, and the increasing gradually every magnetic bridge 4 of internal layer, namely can reduce outer permanent magnet 1 to the influence degree every magnetic bridge 4, the leakage field problem of permanent magnet 1 can be weakened again.
Permanent magnet 1 is divided into multilayer, quality and the size of every layer of permanent magnet 1 can be reduced, reduce the bore size of every layer of permanent magnet in rotor core, can reduce traditional individual layer permanent magnet 1 due to permanent magnet causes more greatly rotor core 5 perforate larger, make the stress of rotor core 5 excessive in tapping local, thus had a strong impact on the intensity of rotor, reduce the problem of the reliability of rotor when High Rotation Speed, permanent magnet hierarchy, can avoid the phenomenon that individual layer magnet structure is concentrated at tapping stress; In addition, every layer of permanent magnet 1 is divided into multistage again, and hop count is more than or equal to 2, can reduce the quality of every block permanent magnet 1, the larger 1 pair of rotor core 5 of monolithic permanent magnet and the influence degree every magnetic bridge 4 stress when being reduced in High Rotation Speed; Between every section of permanent magnet 1 and every layer of permanent magnet 1 two ends all have non-magnetic reinforcement 2, when High Rotation Speed, reinforcement can bear larger stress, thus permanent magnet 1 can be reduced to the influence degree every magnetic bridge 4 place and rotor core 5, avoid occurring every magnetic bridge 4 place that local stress is excessive thus reducing the problem of rotor life, simultaneously non-magnetic reinforcement 2 has the effect every magnetic, can reduce permanent magnet 1 segmentation and the leakage field problem that causes.The two ends of every layer of permanent magnet 1 offer every magnetic bridge 4, near the outermost Permanent-magnet layer of rotor, that offers is less every magnetic bridge 4, and the increasing gradually every magnetic bridge 4 of internal layer, because the centrifugal force in outside is larger, the intensity of rotor core 5 is reduced every magnetic bridge 4 compared with conference if offered, and the centrifugal force of internal layer is less gradually, the size every magnetic bridge 4 can be strengthened, so both can avoid owing to offering every magnetic bridge 4 excessive and reduce the problem of rotor strength, having reduced permanent magnet 1 leakage field problem by what strengthen permanent magnet 1 internal layer gradually every magnetic bridge 4 size again simultaneously.
Claims (3)
1. a high speed permanent magnet motor rotor for permanent magnet hierarchy, is characterized in that, described rotor comprises rotating shaft (3), rotor core (5), permanent magnet (1), reinforcement (2), every magnetic bridge (4); Permanent magnet (1) is nested in rotor core (5), and permanent magnet (1) is divided into multilayer, and the number of plies is more than or equal to 2; Every layer of permanent magnet (1) is divided into multistage, and hop count is more than or equal to 2, has reinforcement (2) between every section of permanent magnet (1); There is reinforcement (2) at the two ends of every layer of permanent magnet (1) and every magnetic bridge (4); Near the outermost Permanent-magnet layer of rotor, that offers is less every magnetic bridge (4), and the increasing gradually every magnetic bridge (4) of permanent magnet internal layer.
2. the high speed permanent magnet motor rotor of a kind of permanent magnet hierarchy according to claim 1, is characterized in that, described rotor number of poles is 2 poles or 4 poles or 6 poles or 8 poles.
3. the high speed permanent magnet motor rotor of a kind of permanent magnet hierarchy according to claim 1, is characterized in that, described permanent magnet (1) shape is arc opening towards the circular arc of rotor center or rotor center dorsad, or is W type or V-shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510141557.1A CN104868624A (en) | 2015-03-30 | 2015-03-30 | High-speed permanent-magnet motor rotor with layered permanent magnet structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510141557.1A CN104868624A (en) | 2015-03-30 | 2015-03-30 | High-speed permanent-magnet motor rotor with layered permanent magnet structure |
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| CN104868624A true CN104868624A (en) | 2015-08-26 |
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| CN201510141557.1A Pending CN104868624A (en) | 2015-03-30 | 2015-03-30 | High-speed permanent-magnet motor rotor with layered permanent magnet structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321950A (en) * | 2018-03-09 | 2018-07-24 | 哈尔滨理工大学 | A kind of high-speed permanent magnetic body synchronous motor rotor structure |
| CN108494125A (en) * | 2018-03-09 | 2018-09-04 | 沈阳工业大学 | A kind of outer rotor high-speed motor that rotor is bound using composite permanent-magnetic material layering |
| CN108711969A (en) * | 2018-07-13 | 2018-10-26 | 珠海格力电器股份有限公司 | Rotor assembly and motor |
| CN109638998A (en) * | 2018-12-04 | 2019-04-16 | 珠海格力电器股份有限公司 | Motor rotor, motor and electric automobile |
| CN112615449A (en) * | 2020-09-16 | 2021-04-06 | 山东大学 | Multilayer structure hybrid excitation rotor and manufacturing method thereof |
| CN113224863A (en) * | 2021-06-03 | 2021-08-06 | 哈尔滨理工大学 | Novel permanent magnet auxiliary synchronous reluctance motor structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01144337A (en) * | 1987-11-30 | 1989-06-06 | Okuma Mach Works Ltd | Structure of rotor of permanent magnet type motor |
| CN102157998A (en) * | 2011-03-25 | 2011-08-17 | 上海大学 | Rotor of built-in permanent magnet motor and magnetic steel structural parameter determining method thereof |
| CN202364016U (en) * | 2011-12-19 | 2012-08-01 | 南车株洲电机有限公司 | Permanent magnet synchronous motor and V-shaped rotor structure thereof |
| CN202364018U (en) * | 2011-12-19 | 2012-08-01 | 南车株洲电机有限公司 | Permanent magnet synchronous motor and W-shaped rotor structure thereof |
| CN104300713A (en) * | 2014-10-17 | 2015-01-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and permanent magnet synchronous motor applying same |
| CN204205765U (en) * | 2014-11-25 | 2015-03-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and there is its motor |
| CN204597663U (en) * | 2015-03-30 | 2015-08-26 | 沈阳化工大学 | A kind of high speed permanent magnet motor rotor of permanent magnet hierarchy |
-
2015
- 2015-03-30 CN CN201510141557.1A patent/CN104868624A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01144337A (en) * | 1987-11-30 | 1989-06-06 | Okuma Mach Works Ltd | Structure of rotor of permanent magnet type motor |
| CN102157998A (en) * | 2011-03-25 | 2011-08-17 | 上海大学 | Rotor of built-in permanent magnet motor and magnetic steel structural parameter determining method thereof |
| CN202364016U (en) * | 2011-12-19 | 2012-08-01 | 南车株洲电机有限公司 | Permanent magnet synchronous motor and V-shaped rotor structure thereof |
| CN202364018U (en) * | 2011-12-19 | 2012-08-01 | 南车株洲电机有限公司 | Permanent magnet synchronous motor and W-shaped rotor structure thereof |
| CN104300713A (en) * | 2014-10-17 | 2015-01-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and permanent magnet synchronous motor applying same |
| CN204205765U (en) * | 2014-11-25 | 2015-03-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and there is its motor |
| CN204597663U (en) * | 2015-03-30 | 2015-08-26 | 沈阳化工大学 | A kind of high speed permanent magnet motor rotor of permanent magnet hierarchy |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321950A (en) * | 2018-03-09 | 2018-07-24 | 哈尔滨理工大学 | A kind of high-speed permanent magnetic body synchronous motor rotor structure |
| CN108494125A (en) * | 2018-03-09 | 2018-09-04 | 沈阳工业大学 | A kind of outer rotor high-speed motor that rotor is bound using composite permanent-magnetic material layering |
| CN108494125B (en) * | 2018-03-09 | 2023-07-14 | 沈阳工业大学 | Outer rotor high-speed motor with rotor bound by composite permanent magnet material in layering mode |
| CN108711969A (en) * | 2018-07-13 | 2018-10-26 | 珠海格力电器股份有限公司 | Rotor assembly and motor |
| CN109638998A (en) * | 2018-12-04 | 2019-04-16 | 珠海格力电器股份有限公司 | Motor rotor, motor and electric automobile |
| CN109638998B (en) * | 2018-12-04 | 2024-05-07 | 珠海格力电器股份有限公司 | Motor rotor, motor and electric automobile |
| CN112615449A (en) * | 2020-09-16 | 2021-04-06 | 山东大学 | Multilayer structure hybrid excitation rotor and manufacturing method thereof |
| CN112615449B (en) * | 2020-09-16 | 2024-04-12 | 山东大学 | Multilayer structure hybrid excitation rotor and manufacturing method thereof |
| CN113224863A (en) * | 2021-06-03 | 2021-08-06 | 哈尔滨理工大学 | Novel permanent magnet auxiliary synchronous reluctance motor structure |
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Application publication date: 20150826 |
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