CN109586439B - Composite magnet multi-layer sheath high-speed permanent magnet motor rotor - Google Patents
Composite magnet multi-layer sheath high-speed permanent magnet motor rotor Download PDFInfo
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- CN109586439B CN109586439B CN201811317459.9A CN201811317459A CN109586439B CN 109586439 B CN109586439 B CN 109586439B CN 201811317459 A CN201811317459 A CN 201811317459A CN 109586439 B CN109586439 B CN 109586439B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
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- Engineering & Computer Science (AREA)
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a composite magnet multi-layer sheath high-speed permanent magnet motor rotor, and belongs to the technical field of motors. The rotor includes: the permanent magnet motor comprises a rotor core, a rare earth permanent magnet, an inner layer sheath, a non-conductive permanent magnet, an outer layer sheath and permanent magnet inter-electrode fillers; the non-conductive permanent magnet is arranged, the eddy current loss on the inner layer sheath and the rare earth permanent magnet is weakened through harmonic waves, the temperature of the rotor is effectively reduced, and the problem that the permanent magnet is easy to generate irreversible demagnetization at high temperature, so that the motor cannot run is solved; the invention is provided with the layered sheath, thereby not only improving the mechanical strength of the rotor, but also effectively reducing the eddy current loss of harmonic waves on the rotor sheath, and being more beneficial to reducing the temperature of the rotor.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a composite magnet multi-layer sheath high-speed permanent magnet motor rotor.
Background
The high-speed motor has high rotating speed, high power density and small volume, so that materials can be effectively saved; the dynamic response is faster due to the smaller moment of inertia; the high speed motor can be directly connected to the working machine or the load, eliminating the conventional mechanical speed change device, thereby reducing noise and improving the efficiency of the transmission system. The research and application of the high-speed motor meet the economic development requirements of energy conservation and emission reduction, become one of the research hotspots in the international electrotechnical field at present, and have wide application prospects in high-speed grinding machines, air circulation refrigeration systems, energy storage flywheels, high-speed centrifugal compressors, blowers, aerospace and the like.
The rare earth permanent magnet can provide high magnetic performance, and can be widely applied to the permanent magnet motor with excellent magnetic performance, but the rare earth permanent magnet can not bear huge tensile stress generated when the motor rotates at high speed, and a protective measure must be taken for the rare earth permanent magnet.
Because motor fluting and frequency conversion power supply can produce a large amount of harmonics in the motor, and these harmonics are on the carbon fiber protective sheath, especially the eddy current loss that produces on tombarthite permanent magnet, can produce a large amount of heats in the rotor, and the carbon fiber protective sheath is hot bad conductor, and the rotor heat is difficult to the effluvium for the temperature of rotor is too high, causes the tombarthite permanent magnet to produce irreversible demagnetization under high temperature, finally leads to the serious consequence that the motor can't move. Therefore, the adoption of any effective means to reduce the eddy current loss of the rotor achieves the effect of reducing the temperature of the rotor, thereby avoiding the irreversible demagnetization of the rare earth permanent magnet at high temperature and ensuring the normal operation of the motor, and is one of the key technical problems to be solved by the high-speed permanent magnet motor.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides a composite magnet multi-layer sheath high-speed permanent magnet motor rotor, which aims to greatly reduce the temperature of the rotor and avoid irreversible demagnetization of a permanent magnet at high temperature by reducing the eddy current loss of harmonic waves on a rare earth permanent magnet and an inner layer sheath, thereby ensuring the normal operation of the motor.
In order to achieve the above object, the present invention provides a composite magnet multi-layer sheath high-speed permanent magnet motor rotor, comprising: the permanent magnet motor comprises a rotor core, a rare earth permanent magnet, an inner layer sheath, a non-conductive permanent magnet, an outer layer sheath and permanent magnet interelectrode fillers.
The number of the rare earth permanent magnets is multiple, the rare earth permanent magnets are uniformly spaced along the circumferential direction of the rotor core, and permanent magnet inter-pole fillers are located at inter-pole gaps of adjacent rare earth permanent magnets; the inner layer protective sleeve is arranged on the outer surface of the rare earth permanent magnet and is in interference or transition fit with the rare earth permanent magnet; the number of the non-conductive permanent magnets is equal to that of the rare earth permanent magnets, the non-conductive permanent magnets are uniformly spaced along the circumferential direction of the inner layer sheath and are at the same position as the rare earth permanent magnets, and permanent magnet inter-pole fillers are located at inter-pole gaps of the adjacent non-conductive permanent magnets; the outer layer protective sleeve is arranged on the outer surface of the non-conductive permanent magnet and is in interference fit with the non-conductive permanent magnet.
Preferably, the inner sheath and the outer sheath are both carbon fiber sheaths, and the thickness of the inner sheath is larger than that of the outer sheath.
Preferably, the rare earth permanent magnet is a neodymium iron boron permanent magnet and a samarium cobalt permanent magnet with high magnetic density, and the non-conductive permanent magnet is a ferrite permanent magnet.
Preferably, the rare earth permanent magnet is thicker, and the non-conductive permanent magnet is thinner.
Preferably, the permanent magnet interpolar filler is made of aluminum alloy and stainless steel materials with high thermal conductivity and low temperature expansion coefficient.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
1. according to the composite magnet multi-layer sheath high-speed permanent magnet motor rotor provided by the invention, the non-conductive permanent magnet is arranged outside the rare earth permanent magnet and the inner sheath, so that the distance between the inner sheath and the rare earth permanent magnet and the air gap length of the rare earth permanent magnet are increased, namely, the magnetic resistance of a harmonic magnetic field entering the inner sheath and the rare earth permanent magnet is increased, the motor harmonic is well inhibited and shielded, the effect of the harmonic magnetic field on the inner sheath and the rare earth permanent magnet is greatly weakened, the eddy current loss on the inner sheath and the rare earth permanent magnet is reduced, the temperature of the rotor is greatly reduced, and the normal operation of the motor is.
2. The composite magnet multi-layer sheath high-speed permanent magnet motor rotor provided by the invention is provided with the layered sheaths, wherein the inner layer sheath protects the mechanical strength of the rare earth permanent magnet, the outer layer sheath protects the mechanical strength of the non-conductive permanent magnet, and the inner layer sheath and the outer layer sheath are combined, so that the mechanical reliability of the motor rotor in high-speed rotation is improved. Meanwhile, in the layering process, the thickness of the inner layer sheath is large, the thickness of the outer layer sheath is small, eddy current loss on the rotor is further reduced, the temperature of the rotor is effectively reduced, and normal operation of the motor is guaranteed.
Drawings
Fig. 1 is a radial cross-sectional view of a composite magnet multi-layer sheath high-speed permanent magnet machine rotor constructed in accordance with a preferred embodiment of the present invention.
The rotor comprises an outer-layer carbon fiber sheath 1, a ferrite permanent magnet 2, an inner-layer carbon fiber sheath 3, rare earth permanent magnets 4, rare earth permanent magnet interpoles 5, ferrite interpoles 6 and a rotor core 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features mentioned in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Fig. 1 is a cross-sectional view of a composite magnet multi-layer sheath high-speed permanent magnet machine rotor constructed in accordance with a preferred embodiment of the present invention, as shown in fig. 1, comprising: the permanent magnet rotor comprises an outer carbon fiber sheath 1, a ferrite permanent magnet 2, an inner carbon fiber sheath 3, a rare earth permanent magnet 4, rare earth permanent magnet interpolar filling 5, ferrite permanent magnet interpolar filling 6 and a rotor core 7.
The 4 rare earth permanent magnets 4 are uniformly spaced along the circumferential direction of the rotor core 7, and the rare earth permanent magnet interpolar filling 5 is positioned in the gap between the adjacent permanent magnets 4; the inner carbon fiber sheath 3 is arranged on the outer surface of the rare earth permanent magnet 4 and is in interference or transition fit with the rare earth permanent magnet 4; the 4 ferrite permanent magnets 2 are uniformly spaced along the circumferential direction of the inner-layer carbon fiber sheath 3, and ferrite permanent magnet interpole filling 6 is positioned in a gap between the adjacent ferrite permanent magnets 2; the outer carbon fiber sheath 1 is arranged on the outer surface of the ferrite permanent magnet 2 and is in interference fit with the ferrite permanent magnet 2.
Because motor fluting and frequency conversion power supply produce a large amount of harmonics in the air gap field, these harmonics can be on inlayer carbon fiber sheath 3, especially produce a large amount of eddy current losses on tombarthite permanent magnet 4 to produce a large amount of heats in the rotor, and inlayer carbon fiber sheath 3 is hot defective conductor, and the rotor heat is difficult to the effluvium, according to the motor design principle that motor volume and motor speed are inversely proportional, figure 1 the whole volume of rotor very little, the heat radiating area of rotor is very little promptly, therefore the eddy current losses on tombarthite permanent magnet 4 and the inlayer carbon fiber sheath 3 very easily cause the temperature of rotor too high, and tombarthite permanent magnet 4 easily takes place irreversible demagnetization under high temperature, leads to the serious consequence that the motor can't move.
Ferrite permanent magnet 3 has increased the length of inlayer carbon fiber sheath 3 and tombarthite permanent magnet 4 apart from the air gap, increased the magnetic resistance that the harmonic magnetic field got into inlayer carbon fiber sheath 3 and tombarthite permanent magnet 4 promptly, good suppression and shielding effect have been played to the motor harmonic, the osmotic strength in harmonic magnetic field on inlayer carbon fiber sheath 3 and tombarthite permanent magnet 4 has been weakened greatly, consequently, ferrite permanent magnet 3's addition, the eddy current loss on inlayer carbon fiber sheath 3 and the tombarthite permanent magnet 4 has been reduced, make the rotor temperature reduce by a wide margin, thereby the normal operating of motor has been ensured.
The rare earth permanent magnet 4 is a neodymium iron boron permanent magnet or a samarium cobalt permanent magnet with high remanence density, can provide a magnetic field far larger than the ferrite permanent magnet 2, and can easily meet the magnetic field requirement of the motor. However, as the motor operates, the internal temperature of the motor gradually rises, the residual magnetic density of the rare earth permanent magnet 4 gradually decreases, the provided magnetic field gradually decreases, and the magnetic field during the operation of the motor is reduced, while the residual magnetic density of the ferrite permanent magnet 2 gradually increases as the temperature rises, and as the temperature of the rotor continuously rises, the magnetic performance of the ferrite permanent magnet 2 further increases, so that more magnetic fields are provided, therefore, the addition of the ferrite permanent magnet 2 can compensate the magnetic field lost by the rare earth permanent magnet 4 due to the fact that the temperature rises and the magnetism decreases, and the magnetic field during the operation of the motor is improved.
The rare earth permanent magnet 4 and the ferrite permanent magnet 2 can not bear huge centrifugal force generated during high-speed rotation, so that the mechanical strength of the rare earth permanent magnet 4 protected by the inner-layer carbon fiber sheath 3 is respectively set, the mechanical strength of the ferrite permanent magnet 2 protected by the outer-layer carbon fiber sheath 1 is combined with the inner-layer carbon fiber sheath 3, and the mechanical strength of the motor rotor is improved.
In order to realize the effect better, on one hand, the thickness of the rare earth permanent magnet 4 is thicker, and because the magnetic performance of the rare earth permanent magnet 4 is far higher than that of the ferrite permanent magnet 2, a larger magnetic field can be provided, and the magnetic field requirement of the motor is easier to meet. The thickness of the ferrite permanent magnet 2 should be thin, because the non-magnetic conductivity of the ferrite permanent magnet 2 can increase the air gap and magnetic resistance of the rare earth permanent magnet 4, if the ferrite permanent magnet is too thick, in order to meet the magnetic field requirement of the motor, the amount of the rare earth permanent magnet can be greatly increased, thereby increasing the cost of the motor. In practical applications, the specific thickness of the ferrite permanent magnet should be determined according to the penetration depth of the motor harmonic.
On the other hand, the thickness of the sheath of the rotor is determined according to the strength of the motor, the strength requirement of the rotor cannot be met due to the fact that the sheath is too thin, the air gap and the magnetic resistance of the permanent magnet can be increased due to the fact that the sheath is too thick, in order to meet the requirement of the magnetic field of the motor, the using amount of the permanent magnet can be greatly increased, the cost of the motor is increased, and therefore the thickness of the required sheath is certain for the same motor. According to the invention, on the premise that the thickness of the rotor sheath is certain, the sheath is layered, the inner carbon fiber sheath 3 is thicker, and firstly, the rare earth permanent magnet 4 is thicker, so that a thicker protective sleeve is needed to ensure the strength of the rare earth permanent magnet; secondly, the ferrite permanent magnet 2 can reduce the eddy current loss of harmonic waves on the inner-layer carbon fiber sheath 3, and the thicker the inner-layer carbon fiber sheath 3 is, the larger the eddy current loss can be reduced; the outer carbon fiber sheath 1 is thin, and firstly, the strength of the ferrite permanent magnet 2 can be ensured only by a thin protective sleeve due to the fact that the ferrite permanent magnet is thin; secondly, because the harmonic wave also can produce eddy current loss on outer carbon fiber sheath 1, the thinner outer carbon fiber sheath 1 is, the smaller eddy current loss that produces is.
In conclusion, the layered protective sleeve structure not only improves the mechanical strength of the rotor as a whole, but also can effectively reduce the eddy current loss of harmonic waves on the rotor sheath, thereby being more beneficial to reducing the temperature of the rotor.
The rare earth permanent magnet interpole filling 5 and the ferrite interpole filling 6 are made of aluminum alloy and stainless steel materials with high thermal conductivity and low temperature expansion coefficient. The high heat-conducting property can accelerate the heat conduction in the rotor, and is more beneficial to the rapid reduction of the temperature of the rotor; the low temperature expansion coefficient can reduce the expansion deformation of the rare earth permanent magnet interpole filling 5 and the ferrite interpole filling 6 at high temperature, thereby reducing the local tensile stress of the inner carbon fiber sheath 3 and the outer carbon fiber sheath 1 at the interpole gap of the permanent magnet, and being more beneficial to improving the mechanical strength of the rotor.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A composite magnet multi-layer sheath high-speed permanent magnet motor rotor is characterized by comprising: the permanent magnet motor comprises a rotor core, a rare earth permanent magnet, an inner layer sheath, a non-conductive permanent magnet, an outer layer sheath and permanent magnet interelectrode fillers;
the number of the rare earth permanent magnets is multiple, the rare earth permanent magnets are uniformly spaced along the circumferential direction of the rotor core, and the permanent magnet interpolar fillers are filled in gaps between the adjacent rare earth permanent magnets;
the inner layer protective sleeve is arranged on the outer surface of the rare earth permanent magnet;
the number of the non-conductive permanent magnets is equal to that of the rare earth permanent magnets, the non-conductive permanent magnets are uniformly spaced along the circumferential direction of the inner layer sheath and are at the same positions as the rare earth permanent magnets, and the permanent magnet interpolar fillers are filled in gaps between the adjacent non-conductive permanent magnets;
the outer layer protective sleeve is arranged on the outer surface of the non-conductive permanent magnet; the thickness of the inner sheath is greater than the thickness of the outer sheath.
2. The composite magnet multi-layer sheath high speed permanent magnet motor rotor of claim 1, wherein the non-conductive permanent magnets reduce eddy current losses of motor harmonics on the inner sheath and the rare earth permanent magnets.
3. The composite magnet multi-layer sheath high speed permanent magnet machine rotor of claim 2, wherein said non-conductive permanent magnets have increased magnetic properties with increasing temperature.
4. The composite magnet multi-layer sheath high speed permanent magnet motor rotor of claim 3, wherein the non-conductive permanent magnets are ferrite permanent magnets.
5. The composite magnet multi-layer sheath high speed permanent magnet machine rotor of claim 4, wherein the thickness of the rare earth permanent magnets is greater than the thickness of the non-conductive permanent magnets.
6. The composite magnet multi-layer sheath high-speed permanent magnet motor rotor of claim 1, wherein the inner sheath and the outer sheath are both carbon fiber protective sheaths.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811317459.9A CN109586439B (en) | 2018-11-07 | 2018-11-07 | Composite magnet multi-layer sheath high-speed permanent magnet motor rotor |
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| CN201811317459.9A CN109586439B (en) | 2018-11-07 | 2018-11-07 | Composite magnet multi-layer sheath high-speed permanent magnet motor rotor |
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| CN109586439A CN109586439A (en) | 2019-04-05 |
| CN109586439B true CN109586439B (en) | 2020-05-19 |
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| CN111564916A (en) * | 2020-05-26 | 2020-08-21 | 东北农业大学 | High-speed permanent magnet motor rotor structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203562887U (en) * | 2013-11-18 | 2014-04-23 | 沈阳工业大学 | High-speed permanent magnet motor with adoption of rotor mixed protection measure |
| CN204906030U (en) * | 2014-12-01 | 2015-12-23 | 沈阳工业大学 | High -speed permanent -magnet machine rotor of compound protection of multilayer |
| CN105811614A (en) * | 2016-03-17 | 2016-07-27 | 重庆大学 | Rotor structure for high speed permanent magnet synchronous machine |
| CN108390484A (en) * | 2018-05-02 | 2018-08-10 | 浙江大学 | A kind of high speed permanent magnet motor rotor structure with composite jacket |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000331823A (en) * | 1999-05-24 | 2000-11-30 | Kanegafuchi Chem Ind Co Ltd | Magnet roller |
| JP4394079B2 (en) * | 2006-02-15 | 2010-01-06 | 三菱電機株式会社 | Motor rotor, motor and air conditioner |
| US10468952B2 (en) * | 2012-12-14 | 2019-11-05 | Abb Schweiz Ag | Permanent magnet machine with hybrid cage and methods for operating same |
| DE102014010123A1 (en) * | 2014-07-09 | 2016-01-14 | Leoni Kabel Holding Gmbh | Crosslinkable composition |
| CN205123447U (en) * | 2015-12-05 | 2016-03-30 | 佛山市顺德区苇源电器有限公司 | Integrated into one piece's ceiling fan rotor |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203562887U (en) * | 2013-11-18 | 2014-04-23 | 沈阳工业大学 | High-speed permanent magnet motor with adoption of rotor mixed protection measure |
| CN204906030U (en) * | 2014-12-01 | 2015-12-23 | 沈阳工业大学 | High -speed permanent -magnet machine rotor of compound protection of multilayer |
| CN105811614A (en) * | 2016-03-17 | 2016-07-27 | 重庆大学 | Rotor structure for high speed permanent magnet synchronous machine |
| CN108390484A (en) * | 2018-05-02 | 2018-08-10 | 浙江大学 | A kind of high speed permanent magnet motor rotor structure with composite jacket |
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