CN103095078A - Transverse laminated synchronous reluctance motor with auxiliary permanent magnets - Google Patents
Transverse laminated synchronous reluctance motor with auxiliary permanent magnets Download PDFInfo
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- CN103095078A CN103095078A CN201110338922XA CN201110338922A CN103095078A CN 103095078 A CN103095078 A CN 103095078A CN 201110338922X A CN201110338922X A CN 201110338922XA CN 201110338922 A CN201110338922 A CN 201110338922A CN 103095078 A CN103095078 A CN 103095078A
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Abstract
The invention discloses a transverse laminated synchronous reluctance motor with auxiliary permanent magnets. The transverse laminated synchronous reluctance motor with the auxiliary permanent magnets comprises a stator core, stator windings, a rotor core assembly, a rotating shaft, a bearing used for supporting the rotating shaft, a front end cover, a rear end cover and a machine shell. The rotor core assembly comprises the rotor core and a plurality of block-shaped permanent magnets, wherein the rotor core and the plurality of block-shaped permanent magnets are sleeved on the rotating shaft. The rotor core is formed by transversely laminating a plurality of single-shaped complete steel sheets along the rotating shaft. The rotor core is provided with a plurality of layers of arc grooves suitable for insertion of the blocked-shaped permanent magnets. The block-shaped permanent magnets are arranged in the arc grooves. The polarities of the permanent magnets in the layers of arch grooves of the same polar are the same and form a magnetic pole group. The polarities of magnetic pole sets of two adjacent poles are opposite. According to the synchronous reluctance motor, the auxiliary block-shaped permanent magnets are arranged in the arc grooves of the rotor core, and therefore power factors of the motor are improved, and constant power speed adjustable ranges of the motor are widened; and due to the fact that the rotor core is formed by transversely laminating the plurality of single-shaped complete silicon steel sheets, the motor can have good mechanical strength.
Description
Technical field
The present invention relates to a kind of synchronous magnetic resistance motor, particularly a kind of transverse lamination type synchronous magnetic resistance motor with auxiliary permanent magnet.
Background technology
Synchronous magnetic resistance motor is not because there are electromagnetic consumable in simple in structure, rotor, and the shortcoming such as torque fluctuation is remarkable can avoid the noise of switched reluctance machines to reach low cruise greatly the time, causes gradually in recent years people's research interest.And the service behaviour in the concrete structure of its rotor and when operation thereof, the performance when having determined synchronous magnetic resistance motor work.Synchronous magnetic resistance motor of the prior art exists the shortcoming that power factor is low, Constant-power speed range is narrow, this is that rotor due to synchronous magnetic resistance motor does not have the excitation permanent magnet, in stator current, larger excitation current component will be arranged, be that reactive current is larger, therefore the power factor of synchronous magnetic resistance motor is lower, generally 0.72～0.78; Again due to existing synchronous magnetic resistance motor after rotating speed increases, after particularly surpassing rated speed, induced potential on stator winding is also in company with increasing, because having permanent magnet, rotor can not produce weak magnetic effect by the interaction of controlling stator field and magnetic field of permanent magnet, so because the stator winding terminal voltage is elevated to rated voltage by limiting voltage with rotating speed, therefore the Constant-power speed range of synchronous magnetic resistance motor is narrow, generally only has 1: 1.5～1: 2.0.For the shortcoming of above-mentioned synchronous magnetic resistance motor, adopt the auxiliary synchronous magnetic resistance motor technology of permanent magnet studied.
In addition, a kind of invention of bonded axial lamination synchronous magnetic resistance motor of permanent magnet additive excitation is also existing open, as shown in Figure 1, the bonded axial lamination synchronous magnetic resistance motor of this permanent magnet additive excitation, although can overcome the above-mentioned shortcoming of conventional synchronization reluctance motor, but the rotor structure of the bonded axial lamination synchronous magnetic resistance motor of this permanent magnet additive excitation, formed by many difform magnetic conduction rigid material laminations and difform flaky permanent magnet, the parts of rotor are more, are not convenient for the large batch of manufacturing of high efficiency.Moreover, the bonded axial lamination synchronous magnetic resistance motor of this permanent magnet additive excitation, under high rotating speed or under the effect of larger fluctuating load, reliability for the adhesion strength of lamination and permanent magnet will stand severe tests, and also namely this structure is unfavorable for moving under high rotating speed or the large occasion of load change.
Summary of the invention
For the defective that exists in prior art and deficiency, the present invention proposes a kind of transverse lamination type synchronous magnetic resistance motor with auxiliary permanent magnet, to solve the technical problem that power factor is low, Constant-power speed range is narrow of the synchronous magnetic resistance motor that exists in prior art.
To achieve these goals, the present invention proposes a kind of transverse lamination type synchronous magnetic resistance motor with auxiliary permanent magnet, comprises bearing, front end housing, rear end cap and the casing of stator core, stator winding, rotor core assembly, rotating shaft, supporting revolving shaft, wherein,
Described rotor core assembly comprises rotor core and a plurality of block permanent magnet that is socketed in rotating shaft, described rotor core is that a plurality of complete steel disc with single shape laterally is overrided to form along rotating shaft, has multilayer on described rotor core and is suitable for the arc groove that described block permanent magnet inserts;
Described block permanent magnet is arranged in above-mentioned arc groove, and the polarity of each permanent magnet in same extremely lower each layer arc groove is identical and form a magnetic pole group, and the polarity of adjacent two magnetic pole groups under extremely is opposite.
Further, the L1/L2 of described block permanent magnet is 0～0.6, wherein L1 be described block permanent magnet along the length of filling up on the arc length direction of the arc groove of each layer of described rotor core, L2 is the arc slot length of corresponding each layer of described rotor core.
Further, described rotor core is the rigid material of magnetic conduction.
Further, described rotor core assembly also comprises the reinforcing ring that is arranged on described rotor core one end.
Further, described reinforcing ring is non-magnetic metal material.
Further, described steel disc is silicon steel sheet.
The transverse lamination type synchronous magnetic resistance motor of the auxiliary permanent magnet of band of the present invention is owing to having added auxiliary block permanent magnet in rotor core arc groove, improved motor power factor, broadening the Constant-power speed range of motor, the present invention can choose permanent magnet in each layer arc groove and the ratio of arc slot length by appropriate design, and make Constant-power speed range reach 1: 3～1: 6.Laterally be overrided to form because rotor core adopts the silicon steel sheet by single shape full wafer, therefore have good mechanical strength, can be in high speed and safe and reliable operation under impact or the larger load of fluctuating.In addition, what the magnetic line of force that synchronous magnetic resistance motor of the present invention produces can be unobstructed on d axle magnetic circuit passes through, and can obtain very large d axle inductance; The magnetic line of force is on q axle magnetic circuit, and because being subject to the obstruct of multilayer arc groove, in the arc groove or have permanent magnet or be air, the magnetic line of force is equivalent to through air gap through the arc groove, makes q axle inductance very little.Thereby have very high salient pole ratio, given play to very strong magnetic resistance moment.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.For the person of ordinary skill in the field, from detailed description of the invention, above and other purpose of the present invention, feature and advantage will be apparent.
Description of drawings
Fig. 1 is the rotor structure schematic diagram of axial lamination synchronous magnetic resistance motor of the prior art;
Fig. 2 is the transverse lamination type synchronous magnetic resistance motor rotor structural representation of the auxiliary permanent magnet of band of the present invention;
Fig. 3 is the structural representation of the transverse lamination type synchronous magnetic resistance motor of the auxiliary permanent magnet of band of the present invention;
Fig. 4 is the rotor core profile of the transverse lamination type synchronous magnetic resistance motor of the auxiliary permanent magnet of band of the present invention.
Wherein, 1, stator core, 2, the rotor core assembly, 3, rotating shaft, 4, stator winding, 5, front end housing, 6, rear end cap, 7, casing, 8, bearing, 21, rotor core, 22, block permanent magnet, 23, the arc groove, 24, reinforcing ring.
Embodiment
The transverse lamination type synchronous magnetic resistance motor of the auxiliary permanent magnet of band of the present invention, specifically as shown in Fig. 2-4, it comprises bearing 8, front end housing 5, rear end cap 6 and the casing 7 of stator core 1, stator winding 4, rotor core assembly 2, rotating shaft 3, supporting revolving shaft 3, wherein
Rotor core assembly 2 comprises rotor core 21 and a plurality of block permanent magnet 22 that is socketed in rotating shaft 3, rotor core 21 is that a plurality of complete steel disc with single shape laterally is overrided to form along rotating shaft 3, has multilayer on rotor core 21 and is suitable for the arc groove 23 that block permanent magnet 22 inserts;
Block permanent magnet 22 is arranged in above-mentioned arc groove 23, and the polarity of each permanent magnet 22 in same extremely lower each layer arc groove 23 is identical and form a magnetic pole group, and the polarity of adjacent two magnetic pole groups under extremely is opposite.
The rotor core structure of the transverse lamination type synchronous magnetic resistance motor of the auxiliary permanent magnet of band of the present invention, employing laterally is overrided to form along rotating shaft by single shape full wafer and with the silicon steel sheet of arc groove, the production technology that laminates of the punching of steel disc and rotor core is convenient, and production efficiency is high; Rotor core is become one by the silicon steel plate stacking of full wafer, has in the radial direction a very strong mechanical strength after rotor rotates, and can be suitable for moving under the high rotating speed of motor and heavy load state, and security reliability is high.Aspect manufacturability, reliability, the performance of the transverse lamination type synchronous magnetic resistance motor of the auxiliary permanent magnet of band of the present invention is better than the performance of bonded axial lamination synchronous magnetic resistance motor of the prior art.
In the present invention, the L1/L2 of block permanent magnet is 0～0.6, wherein L1 be block permanent magnet 22 along the length of filling up on the arc length direction of the arc groove 23 of each layer of rotor core 21, L2 is arc groove 23 length of corresponding each layer of rotor core 21.When interior block permanent magnet 22 length of certain arc groove 23 and arc groove 23 length ratios are zero, represent in this arc groove and do not place permanent magnet.By choosing the numerical value proportioning of suitable L1/L2, can effectively improve the power factor of synchronous magnetic resistance motor of the present invention and the Constant-power speed range of broadening motor.
The below is elaborated with an embodiment, as shown in Figure 3, make the transverse lamination type reluctance-synchronous machine of the auxiliary permanent magnet of three facies tracts of 4 kilowatts of rated power, 1500 rev/mins of rated speeds, testing its motor power factor when 1500 rev/mins of rated speeds is 0.772, and power factor is low; Testing its output torque during 4500 rev/mins of magnetic tachometers a little less than three times is 4.5 Ns. rice, and output power of motor at this moment is 2.1 kilowatts, namely the permanent power bracket of the weak magnetic of this motor can not be reached three times.Adopt the mode of the auxiliary block permanent magnet of insertion of the present invention, namely in the second layer of the rotor core 21 of above motor, the 3rd layer of arc groove 23, insert block permanent magnet 22, its permanent magnet length accounts for the second layer, the 3rd layer of arc groove overall length is 0.25,0.30 than respectively, the above data of testing of electric motors obtain again: the motor power factor when 1500 rev/mins of rated speeds is 0.852, and power factor is greatly improved; Recording the output torque during 4500 rev/mins of magnetic tachometers a little less than three times is 8.47 Ns. rice, and namely at this moment output power of motor reaches 4 kilowatts, and the permanent power bracket of weak magnetic of also namely inserting auxiliary block permanent magnet rear motor enlarges, and can reach three times.
For the accuracy that improves magnetic field and obtain better power factor and wider Constant-power speed range, arc groove 23 of the present invention is interior can arrange one or more block permanent magnet 22, the quantity of the quantity of block permanent magnet 22 of the present invention and arc groove 23 can be identical, also can be different.
In order to obtain good magnetic conduction effect, the rotor core 21 that the present invention puts down in writing is preferably the rigid material of magnetic conduction.
For rotor core 21 is carried out axial reinforcement, so that the transverse lamination type synchronous magnetic resistance motor of the auxiliary permanent magnet of band of the present invention can move to stability and safety, rotor core assembly 2 also comprises the reinforcing ring 24 that is arranged on rotor core 21 1 ends.The quantity of reinforcing ring 24 according to actual needs situation and set.
Preferred as to technique scheme, reinforcing ring 24 is non-magnetic metal material, those skilled in the art will be appreciated that, selecting reinforcing ring is that non-magnetic metal material is a kind of preferred version, can also select non-magnetic nonmetallic materials, for example hard plastics etc. is not being given unnecessary details herein.
More guaranteed in order to guarantee the intensity of rotor core when motor moves, the steel disc that the present invention puts down in writing is preferably silicon steel sheet, and it also can be the magnetic conduction steel disc of the other types that those skilled in the art were familiar with certainly.
Although; the present invention clearly demonstrates by above embodiment and accompanying drawing thereof; yet in the situation that do not deviate from spirit of the present invention and essence thereof; the person of ordinary skill in the field works as can make according to the present invention various corresponding variations and correction, but these corresponding variations and correction all should belong to the protection range of claim of the present invention.
Claims (6)
1. the transverse lamination type synchronous magnetic resistance motor of the auxiliary permanent magnet of band, is characterized in that, comprises bearing, front end housing, rear end cap and the casing of stator core, stator winding, rotor core assembly, rotating shaft, supporting revolving shaft, wherein,
Described rotor core assembly comprises rotor core and a plurality of block permanent magnet that is socketed in rotating shaft, described rotor core is that a plurality of complete steel disc with single shape laterally is overrided to form along rotating shaft, has multilayer on described rotor core and is suitable for the arc groove that described block permanent magnet inserts;
Described block permanent magnet is arranged in above-mentioned arc groove, and the polarity of each permanent magnet in same extremely lower each layer arc groove is identical and form a magnetic pole group, and the polarity of adjacent two magnetic pole groups under extremely is opposite.
2. band according to claim 1 is assisted the transverse lamination type synchronous magnetic resistance motor of permanent magnet, it is characterized in that, the L1/L2 of described block permanent magnet is 0～0.6, wherein L1 be described block permanent magnet along the length of filling up on the arc length direction of each layer arc groove of described rotor core, L2 is the arc slot length of corresponding each layer of described rotor core.
3. the transverse lamination type synchronous magnetic resistance motor of the auxiliary permanent magnet of band according to claim 2, is characterized in that, described rotor core is the rigid material of magnetic conduction.
4. the transverse lamination type synchronous magnetic resistance motor of the auxiliary permanent magnet of band according to claim 1, is characterized in that, described rotor core assembly also comprises the reinforcing ring that is arranged on described rotor core one end.
5. the transverse lamination type synchronous magnetic resistance motor of the auxiliary permanent magnet of band according to claim 4, is characterized in that, described reinforcing ring is non-magnetic metal material.
6. the transverse lamination type synchronous magnetic resistance motor of the auxiliary permanent magnet of band according to claim 5, is characterized in that, described steel disc is silicon steel sheet.
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| CN201110338922.XA CN103095078B (en) | 2011-11-01 | 2011-11-01 | A kind of transverse lamination type synchronous magnetic resistance motor with auxiliary permanent magnet |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3084937A2 (en) * | 2013-12-19 | 2016-10-26 | Drives and Motors D.O.O. | Optimized synchronous reluctance motor assisted by permanent magnets |
| CN106849431A (en) * | 2017-03-31 | 2017-06-13 | 苏州汇川联合动力系统有限公司 | Step skewed pole rotor and permagnetic synchronous motor |
| CN107834800A (en) * | 2017-11-08 | 2018-03-23 | 卧龙电气集团股份有限公司 | One kind is without controller self-starting permanent magnetism assist in synchronization reluctance motor |
| CN107979197A (en) * | 2017-11-08 | 2018-05-01 | 卧龙电气集团股份有限公司 | One kind uses asymmetrical rotor punching permanent magnetism assist in synchronization reluctance motor |
| CN107994698A (en) * | 2017-11-08 | 2018-05-04 | 卧龙电气集团股份有限公司 | A kind of 2 magnetic poles are without controller self-starting permanent magnetism assist in synchronization reluctance motor |
| CN108123585A (en) * | 2016-11-30 | 2018-06-05 | 通用汽车环球科技运作有限责任公司 | Synchronous reluctance motor with the magnetic dispersion path by permanent magnet saturation |
| EP3758192A1 (en) | 2019-06-28 | 2020-12-30 | Nidec Corporation | Rotor, motor, and driving apparatus |
| CN112332570A (en) * | 2019-11-12 | 2021-02-05 | 沈阳工业大学 | Multipolar rotor of outer rotor low-speed synchronous reluctance motor |
| US11075553B2 (en) | 2016-01-26 | 2021-07-27 | Gree Green Refrigeration Technology Center Co., Ltd. Of Zhuhai | Synchronous reluctance motor rotor and synchronous reluctance motor |
| IT202200012713A1 (en) * | 2022-06-15 | 2023-12-15 | Fiat Ricerche | PERMANENT MAGNET ROTOR FOR ELECTRIC MOTORS AND METHOD FOR ITS CONSTRUCTION |
Families Citing this family (1)
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| CN109302039B (en) * | 2018-10-23 | 2019-08-27 | 深圳市深信创联智能科技有限责任公司 | Permanent magnetism assists Reluctance synchronous linear electric generator and its control method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3084937A2 (en) * | 2013-12-19 | 2016-10-26 | Drives and Motors D.O.O. | Optimized synchronous reluctance motor assisted by permanent magnets |
| US11075553B2 (en) | 2016-01-26 | 2021-07-27 | Gree Green Refrigeration Technology Center Co., Ltd. Of Zhuhai | Synchronous reluctance motor rotor and synchronous reluctance motor |
| CN108123585B (en) * | 2016-11-30 | 2020-09-01 | 通用汽车环球科技运作有限责任公司 | Synchronous reluctance motor with magnetic leakage path saturated by permanent magnets |
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| CN106849431A (en) * | 2017-03-31 | 2017-06-13 | 苏州汇川联合动力系统有限公司 | Step skewed pole rotor and permagnetic synchronous motor |
| CN107979197A (en) * | 2017-11-08 | 2018-05-01 | 卧龙电气集团股份有限公司 | One kind uses asymmetrical rotor punching permanent magnetism assist in synchronization reluctance motor |
| CN107994698A (en) * | 2017-11-08 | 2018-05-04 | 卧龙电气集团股份有限公司 | A kind of 2 magnetic poles are without controller self-starting permanent magnetism assist in synchronization reluctance motor |
| CN107834800A (en) * | 2017-11-08 | 2018-03-23 | 卧龙电气集团股份有限公司 | One kind is without controller self-starting permanent magnetism assist in synchronization reluctance motor |
| EP3758192A1 (en) | 2019-06-28 | 2020-12-30 | Nidec Corporation | Rotor, motor, and driving apparatus |
| US11418098B2 (en) | 2019-06-28 | 2022-08-16 | Nidec Corporation | Rotor, motor, and driving apparatus |
| CN112332570A (en) * | 2019-11-12 | 2021-02-05 | 沈阳工业大学 | Multipolar rotor of outer rotor low-speed synchronous reluctance motor |
| CN112332570B (en) * | 2019-11-12 | 2023-09-12 | 沈阳工业大学 | Multipolar rotor of outer rotor low-speed synchronous reluctance motor |
| IT202200012713A1 (en) * | 2022-06-15 | 2023-12-15 | Fiat Ricerche | PERMANENT MAGNET ROTOR FOR ELECTRIC MOTORS AND METHOD FOR ITS CONSTRUCTION |
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