CN109412341B - A high-speed permanent magnet motor system with rotor vacuum cooling - Google Patents
A high-speed permanent magnet motor system with rotor vacuum cooling Download PDFInfo
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- CN109412341B CN109412341B CN201811299443.XA CN201811299443A CN109412341B CN 109412341 B CN109412341 B CN 109412341B CN 201811299443 A CN201811299443 A CN 201811299443A CN 109412341 B CN109412341 B CN 109412341B
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- 238000001816 cooling Methods 0.000 title claims abstract description 51
- 238000002955 isolation Methods 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 22
- 238000009833 condensation Methods 0.000 claims description 20
- 230000005494 condensation Effects 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 14
- 230000001681 protective effect Effects 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical group O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 claims description 3
- 238000001764 infiltration Methods 0.000 claims description 3
- 239000002923 metal particle Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000012080 ambient air Substances 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 12
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 230000005855 radiation Effects 0.000 abstract description 3
- 239000003570 air Substances 0.000 description 25
- 238000011160 research Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/20—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil wherein the cooling medium vaporises within the machine casing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a high-speed permanent magnet motor system with a rotor subjected to vacuumizing cooling. When the motor works, the area occupied by the air between the rotor and the stator is completely sealed and is in a vacuum state. A vacuum pump, an electromagnetic valve and a vacuum gauge are arranged outside the space of the area and are connected with the closed space through a pipeline. The air vacuum degree in the motor air gap is regulated and controlled through the vacuum pump, the wind friction loss of the rotor of the high-speed permanent magnet motor can be greatly reduced, and the wind friction loss can be regulated and controlled according to the rotating speed of the rotor. Wind friction heat of the rotor permanent magnets can be transferred to the stator through convection and radiation, and is led out through a stator heat dissipation system. Through the cooling scheme, the problems of small volume, increasingly difficult heat dissipation and local overhigh temperature rise of the stator and the rotor of the high-speed permanent magnet motor can be effectively solved, and the cooling scheme is particularly suitable for effectively solving the problem of high-temperature loss of the permanent magnet in the permanent magnet motor.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a high-speed permanent magnet motor system with a rotor subjected to vacuumizing cooling.
Background
The high-speed motor has the great advantage of high power density, and can effectively save materials. Because the moment of inertia is smaller, so the dynamic response is faster, if the high-speed motor is directly connected with the load, the traditional mechanical speed change device can be omitted, thereby improving the efficiency of a transmission system, therefore, the research and the application of the high-speed motor meet the economic development requirements of energy conservation and emission reduction, and the high-speed motor has wide application prospect in the fields of high-speed grinding machines, flywheel energy storage, aerospace and the like. With the development of the basic theory of the design of high-power high-speed and ultra-high-speed motors, the research of the high-speed motors is now becoming a research hotspot in the international electrotechnical field around the development and the needs of independent power sources and driving systems such as ships, airplanes and the like and renewable energy power generation systems, and meanwhile, the research of the high-speed motors is becoming an important research field in recent years in the fields of electric science and engineering in China as one of typical motor systems operated under extreme conditions.
As one of key technologies for the research of the high-speed motor, the research of a high-speed motor loss calculation model and a high-efficiency heat dissipation cooling technology for ensuring a proper temperature level of the motor is closely related to the efficiency of the high-speed motor on one hand, and the safety and reliability of the high-speed motor on the other hand. The increase of the winding current of the high-speed motor and the magnetic flux alternating frequency in the iron core causes the increase of basic electric loss and high-frequency additional loss, particularly, wind friction loss and bearing loss generated by the high-speed rotation of the rotor occupy a considerable proportion (up to 40%) in the total loss and are closely related to the running speed of the motor and the heat dissipation and cooling conditions, so that accurate calculation is difficult. In this way, the geometric size reduction caused by the great increase of the power density of the high-speed motor makes an effective heat dissipation and cooling mode a very important key technology in the design of the high-speed motor, and heat generated by the losses needs to be taken away through a smaller total heat dissipation area on the premise of increasing the losses.
The heat dissipation and cooling technology of the high-speed permanent magnet motor must be carefully examined based on the self structural characteristics. In order to ensure that the rotor has enough rigidity and higher critical rotation speed, the rotor of the high-speed permanent magnet motor is generally slender and the axial direction of the rotor cannot be too long; the smaller the rotor diameter should be chosen to reduce centrifugal forces, but the rotor diameter must not be too small to ensure that there is sufficient space for the permanent magnets and shaft. Therefore, in order to ensure that the rotor of the high-speed permanent magnet motor has sufficient mechanical properties, a cooling passage cannot be arranged inside the rotor. Although the rotor eddy current loss is small compared with the stator core loss and the winding copper loss, the rotor heat dissipation condition is poor, and the rotor eddy current loss may cause a higher temperature rise of the rotor. Since the performance of the permanent magnet material is related to temperature, especially for neodymium iron boron materials with lower curie point, higher conductivity and larger temperature coefficient, the performance of the motor is reduced due to the excessively high temperature, and even the motor is damaged due to demagnetization of the permanent magnet.
The cooling medium is distinguished according to the form of the cooling medium, and the current mode widely applied to the motor cooling comprises three types of air cooling, air cooling and liquid cooling. The air cooling, especially under the atmospheric pressure, has natural advantages in motor cooling due to simple structure, no need of an additional sealing device and no pollution, and is often used as a preferred scheme for motor cooling, and the air cooling medium comprises air, hydrogen and the like; liquid cooling media (including liquid single-phase cooling techniques and liquid phase change cooling techniques) include water, oil, freon-based media, and novel pollution-free compound-based fluorocarbon media. Although the air cooling mode has simple structure and convenient operation and maintenance, the air cooling mode is limited by the rotating speed and the capacity of the motor and has huge volume with the motor with the same capacity; the hydrogen cooling and water cooling efficiency is far higher than that of air cooling, the motor volume is correspondingly smaller, but the structure is complex, a hydrogen system and a water system are required to be added respectively, and the operation and maintenance workload is large; the evaporative cooling technology based on liquid working medium phase change utilizes fluid latent heat of vaporization, has excellent cooling characteristics of high heat exchange efficiency, low temperature rise of each part of a motor, uniform temperature distribution, no local hot spots and the like, and has good application potential, but the method also lacks an accurate theory on the flow characteristic of vapor-liquid two-phase fluid and the treatment of heat transfer, and a novel environment-friendly cooling medium still needs to be further researched and developed and stable physical property data are determined.
In view of the cooling means adopted by the high-speed permanent magnet motor studied above, forced ventilation cooling at atmospheric pressure is still adopted for rotor cooling, and the back water cooling is mainly adopted for stator cooling. For high-speed motors, the air friction loss when the air gap pressure is near atmospheric pressure is proportional to the third power of the rotor speed, the first power of the air gap air pressure and the first power of the rotor surface roughness, so that the volumetric heat generation rate of the air medium in the air gap is very large, the value of the volumetric heat generation rate can account for the considerable proportion (up to 40%) of the total loss, which is clearly the difficulty that the high-speed motor working at the air gap normal pressure must pay attention to and overcome when designing a cooling means. For the high-speed permanent magnet motor, because a cooling passage cannot be arranged on the rotor, wind friction is increased rapidly when the convection heat exchange between air and the surface of the rotor is enhanced by increasing the surface roughness (including surface grooving or bulge arrangement); further, in order to take away the increased wind friction loss, the flow rate of the cooling air needs to be increased; increasing the flow of cooling air corresponds to the need to increase the air gap pressure, which in turn leads to increased wind friction. Therefore, the surface roughness of the rotor of the high-speed permanent magnet motor is reduced as much as possible to reduce the wind friction loss, which is disadvantageous for the heat convection between the rotor surface and the air.
Disclosure of Invention
The invention aims to: the invention provides a high-speed permanent magnet motor system with a rotor subjected to vacuumizing cooling, which is used for effectively solving the problems of small volume of a high-speed permanent magnet motor, high wind friction loss of the rotor of the high-speed permanent magnet motor, difficult heat dissipation and local overhigh temperature rise of a stator and a rotor.
The technical scheme is as follows: in order to achieve the above purpose, the present invention adopts the following technical scheme:
A high-speed permanent magnet motor system for rotor vacuumizing cooling comprises a motor, a vacuum pump, an electromagnetic valve for controlling the vacuum pump to be opened and closed, a vacuum gauge and a heat pipe condensation section; the motor comprises a shell, a rotor and a stator which are positioned in the shell, an annular isolation sleeve which is positioned between the stator and the rotor and wraps the stator, and sealing end covers which are positioned at two ends of the isolation sleeve and are used for connecting and sealing the isolation sleeve and the shell of the stator, wherein the shell, the isolation sleeve and the sealing end covers wrap the stator in a closed space together; the rotor comprises a rotating shaft, a rotor iron core and a permanent magnet; the two ends of the rotating shaft are arranged at the two ends of the shell, the rotor core is sleeved on the rotating shaft, and the permanent magnets are embedded on the outer circle surface of the rotor core; the stator comprises a stator core and a stator winding, and the stator winding is arranged on the stator core; the vacuum pump is communicated with a space for accommodating the rotor in the shell;
The lower part of the shell is provided with a liquid inlet communicated with the closed space; the upper part of the shell is provided with a steam outlet communicated with the closed space; the steam outlet is connected with a heat pipe condensing section, and the heat pipe condensing section is connected to the liquid inlet in a return way to form a condensing loop.
Further, the isolation sleeve is arranged at the inner circle of the stator core, the inner side of the annular sleeve adopts a spiral groove, a straight groove or a snake-shaped groove channel, and the inner side of the annular sleeve is directly contacted with the liquid organic working medium.
Furthermore, the outer side of the condensing section of the heat pipe is provided with a plurality of high fins, and the high fins directly exchange heat with ambient air or dissipate heat by forced convection provided by a fan arranged on the outer side.
Furthermore, the condensation section of the heat pipe is preferably arranged vertically to reflux by utilizing the gravity of the working medium, or metal particles are sprayed on the inner side of the pipeline to realize the reflux of the condensed working medium through the liquid infiltration phenomenon
Further, a heat pipe working medium is pre-charged in the heat pipe condensation section, and enters the motor through a liquid inlet; the working medium of the heat pipe is preferably distilled water or acetone.
Further, a protective sleeve is also arranged on the rotor and is sleeved on the periphery of the permanent magnet; the protective sleeve adopts an alloy protective sleeve or a carbon fiber protective sleeve.
The beneficial effects are that: according to the invention, the vacuum degree of air in the motor air gap is regulated and controlled through the vacuum pump, so that the wind friction loss of the rotor of the high-speed permanent magnet motor can be greatly reduced. The wind friction heat of the rotor permanent magnet can be transferred to the stator through convection and radiation, and is led out through a stator heat dissipation system, and is dissipated by a heat pipe condensation section. In general, the above technical solutions conceived by the present invention have the following remarkable advantageous effects compared with the prior art,
1. The rotor vacuumizing cooling system for cooling the high-speed permanent magnet motor, disclosed by the invention, is combined with the separated heat pipe radiating cooling system outside the stator, so that the magnitude of wind friction loss of the rotor can be greatly reduced, and the rotor vacuumizing cooling system can be effectively adjusted through the work of a vacuum pump.
2. The separated heat pipe utilizes the phase change cooling of the liquid working medium, can be a heat dissipation cooling scheme of the motor stator and rotor system with high-efficiency temperature equalization, meanwhile, the arrangement of the condensing section of the separated heat pipe is not influenced by a motor body, and the separated heat pipe can be completely arranged according to the working environment of the motor, so that the separated heat pipe has good technical flexibility.
3. Compared with the conventional full-closed circulating pipeline inner-cooling type evaporative cooling system, the number of pipelines and joints required to be distributed is small, and the sealing isolation sleeve arranged in the stator inner circle seals cooling media in the stator closed space, so that the sealing performance and process difficulty requirements of each pipeline and joint are lower.
Drawings
FIG. 1 is a schematic diagram of a rotor vacuum cooled high speed permanent magnet motor system constructed in accordance with a preferred embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a motor portion in accordance with the present invention.
The vacuum pump comprises a vacuum pump body, a solenoid valve body, a vacuum gauge body, a motor rotor body, a motor stator body, a separated heat pipe condensing section, a stator core body, a stator winding body, a rotor permanent magnet body, a rotor core body, 801 and 806, a stator steam outlet, an end sealing end cover, 803, stator isolation sleeves, 804 and 805, a liquid inlet at the bottom of the stator body, 807 and a casing.
Detailed Description
Referring to fig. 1 and 2, the invention discloses a rotor vacuumizing and cooling high-speed permanent magnet motor system, which comprises a motor, a vacuum pump 1, an electromagnetic valve 2 for controlling the opening and closing of the vacuum pump, a vacuum gauge 3 and a heat pipe condensation section 6; the motor comprises a shell 807, a rotor 4 and a stator 5 which are arranged in the shell 807, an annular isolation sleeve 803 which is arranged between the stator 5 and the rotor 4 and wraps the stator, and sealing end covers 802 which are arranged at two ends of the isolation sleeve and are used for connecting and sealing the isolation sleeve and the stator shell, wherein the shell, the isolation sleeve and the sealing end covers jointly wrap the stator in a closed space; the rotor comprises a rotating shaft 13, a rotor core 12 and permanent magnets 11; two ends of a rotating shaft 13 are arranged at two ends of a machine shell 807, a rotor core 12 is sleeved on the rotating shaft 13, and a permanent magnet 11 is embedded on the outer circle surface of the rotor core 12; the stator comprises a stator core 12 and a stator winding 22, and the stator winding 22 is arranged on the stator core 21; the vacuum pump 1 communicates with a space in the casing 807 in which the rotor is accommodated. The rotor can also be provided with a protective sleeve which is sleeved on the periphery of the permanent magnet; the protective sleeve adopts an alloy protective sleeve or a carbon fiber protective sleeve.
The lower part of the shell is provided with a liquid inlet 805 communicated with the closed space; the upper part of the shell is provided with steam outlets 801 and 806 communicated with the closed space; the steam outlet is connected with a heat pipe condensation section 6, and the heat pipe condensation section 6 is connected to the liquid inlets 804 and 805 in a back-connection mode to form a condensation loop. The heat pipe condensation section is pre-filled with heat pipe working medium, and the heat pipe working medium enters the motor through the liquid inlets 804 and 805. After a certain amount of heat pipe working medium is filled, the whole separated heat pipe system is formed by sealing. The working medium of the heat pipe is preferably distilled water or acetone. The outside of the heat pipe condensation section 6 is provided with a plurality of high fins, and the high fins directly exchange heat with the surrounding air or dissipate heat by forced convection provided by a fan arranged on the outside. The heat pipe condensation section 6 is preferably arranged vertically to reflux by utilizing the gravity of the working medium, or metal particles are sprayed on the inner side of the pipeline to realize the reflux of the condensed working medium through the liquid infiltration phenomenon.
The isolation sleeve 803 is installed at the inner circle of the stator core 21, the inner side of the isolation sleeve 803 adopts a spiral groove, a straight groove or a serpentine channel, and the inner side of the isolation sleeve 803 is directly contacted with the working medium of the heat pipe.
When the motor works, the wind friction loss of the rotor 4 is greatly reduced by regulating and controlling the air vacuum degree in the air gap through the vacuum pump 1, the wind friction heat of the rotor permanent magnet can be transferred to the stator 5 through convection and radiation, and the wind friction heat is led out through a stator 5 heat dissipation system. The stator is cooled by adopting a separated heat pipe, the stator 5 of the high-speed permanent magnet motor is an evaporation section of the separated heat pipe, the heating value of the stator and the rotor of the motor causes the liquid phase change working medium to be evaporated or vaporized, and the working medium steam which ascends to the condensation section 6 of the heat pipe is condensed into liquid to flow back along the wall surface under the cooling of the outer side of the condensation section.
There are many ways in which the invention may be embodied, and the above description is only of a preferred embodiment of the invention. It should be noted that modifications can be made by those skilled in the art without departing from the principles of the present invention, which modifications are also to be considered as being within the scope of the present invention. The components not explicitly described in this embodiment can be implemented by using the prior art.
Claims (3)
1. The high-speed permanent magnet motor system for rotor vacuumizing cooling is characterized by comprising a motor, a vacuum pump (1), an electromagnetic valve (2) for controlling the opening and closing of the vacuum pump, a vacuum gauge (3) and a heat pipe condensation section (6); the motor comprises a shell (807), a rotor (4) and a stator (5) which are arranged in the shell (807), an annular isolation sleeve (803) which is arranged between the stator and the rotor and wraps the stator, and sealing end covers (802) which are arranged at two ends of the isolation sleeve and are used for connecting and sealing the isolation sleeve and the stator shell, wherein the shell, the isolation sleeve and the sealing end covers jointly wrap the stator in a closed space; the rotor comprises a rotating shaft (13), a rotor core (12) and a permanent magnet (11); two ends of the rotating shaft (13) are arranged at two ends of the machine shell (807), the rotor core (12) is sleeved on the rotating shaft (13), and the permanent magnet (11) is embedded on the outer circle surface of the rotor core (12); the stator comprises a stator core (21) and a stator winding (22), and the stator winding (22) is arranged on the stator core (21); the vacuum pump (1) is communicated with a space containing a rotor in the shell (807);
the lower part of the shell is provided with a liquid inlet (805) communicated with the closed space; the upper part of the shell is provided with a steam outlet (801) communicated with the closed space; the steam outlet is connected with a heat pipe condensation section (6), and the heat pipe condensation section (6) is connected to the liquid inlet (805) in a return way to form a condensation loop; the isolation sleeve is arranged at the inner circle of the stator core (21), the isolation sleeve is an annular sleeve, the inner side of the isolation sleeve adopts a spiral groove, a straight groove or a serpentine channel, and the inner side of the isolation sleeve is directly contacted with liquid organic working medium;
The heat pipe condensation section is internally pre-filled with a heat pipe working medium, and the heat pipe working medium enters the motor through a liquid inlet (805); the working medium of the heat pipe is distilled water or acetone; the rotor is also provided with a protective sleeve, and the protective sleeve is sleeved on the rotor at the periphery of the permanent magnet; the protective sleeve adopts an alloy protective sleeve or a carbon fiber protective sleeve.
2. The rotor vacuum-cooled high-speed permanent magnet motor system of claim 1, wherein: and the outer side of the condensing section of the heat pipe is provided with a plurality of high fins, and the high fins directly exchange heat with ambient air or dissipate heat by forced convection provided by a fan arranged on the outer side.
3. The rotor vacuum-cooled high-speed permanent magnet motor system of claim 1, wherein: the heat pipe condensation section is vertically arranged to reflux by utilizing the gravity of working media, or metal particles are sprayed on the inner side of a pipeline to realize the reflux of condensation working media through the liquid infiltration phenomenon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811299443.XA CN109412341B (en) | 2018-11-02 | 2018-11-02 | A high-speed permanent magnet motor system with rotor vacuum cooling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811299443.XA CN109412341B (en) | 2018-11-02 | 2018-11-02 | A high-speed permanent magnet motor system with rotor vacuum cooling |
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| CN109412341A CN109412341A (en) | 2019-03-01 |
| CN109412341B true CN109412341B (en) | 2024-11-15 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019117637A1 (en) * | 2019-07-01 | 2021-01-07 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Arrangement for cooling an electric machine in a motor vehicle and method for operating the arrangement |
| CN113124692A (en) * | 2019-12-30 | 2021-07-16 | 中国大唐集团科技工程有限公司 | Direct air cooling method |
| CN114061344A (en) * | 2020-08-07 | 2022-02-18 | 中国科学院广州能源研究所 | Ultralong gravity heat pipe system |
| CN111987574A (en) * | 2020-08-14 | 2020-11-24 | 武汉锐科光纤激光技术股份有限公司 | Two-phase immersed heat dissipation device of optical fiber laser |
| CN115664119B (en) * | 2022-12-09 | 2023-03-10 | 大庆市晟威机械制造有限公司 | Permanent magnet motor based on heat pipe heat dissipation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820738A (en) * | 2012-08-17 | 2012-12-12 | 中国科学院电工研究所 | Spray type motor stator evaporative cooling system |
| CN106602765A (en) * | 2017-02-20 | 2017-04-26 | 上海优耐特斯压缩机有限公司 | Cooling method and cooling system of high-speed permanent magnet motor direct-driven centrifuge rotor |
| CN209184407U (en) * | 2018-11-02 | 2019-07-30 | 南京林业大学 | High-speed permanent magnet motor system with rotor vacuum cooling |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1889334A (en) * | 2005-06-29 | 2007-01-03 | 中国科学院电工研究所 | External water channel evaporative cooling horizontal motor |
| CN202034873U (en) * | 2011-03-18 | 2011-11-09 | 肖富凯 | Sealing device and condenser for evaporative cooling asynchronous motor stator |
| CN108258852A (en) * | 2018-01-31 | 2018-07-06 | 华中科技大学 | Evaporation cooling Fast Cooling magneto in a kind of armature spindle |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820738A (en) * | 2012-08-17 | 2012-12-12 | 中国科学院电工研究所 | Spray type motor stator evaporative cooling system |
| CN106602765A (en) * | 2017-02-20 | 2017-04-26 | 上海优耐特斯压缩机有限公司 | Cooling method and cooling system of high-speed permanent magnet motor direct-driven centrifuge rotor |
| CN209184407U (en) * | 2018-11-02 | 2019-07-30 | 南京林业大学 | High-speed permanent magnet motor system with rotor vacuum cooling |
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