CN101316058A - Rotor protection sleeve of high speed permanent magnet motor - Google Patents
Rotor protection sleeve of high speed permanent magnet motor Download PDFInfo
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- CN101316058A CN101316058A CNA2008100646668A CN200810064666A CN101316058A CN 101316058 A CN101316058 A CN 101316058A CN A2008100646668 A CNA2008100646668 A CN A2008100646668A CN 200810064666 A CN200810064666 A CN 200810064666A CN 101316058 A CN101316058 A CN 101316058A
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- protection sleeve
- rotor
- rotor protection
- speed permanent
- permanent magnet
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Abstract
The invention provides a high-speed permanent magnetic motor rotor protection sleeve and relates to the structure of a high-speed permanent magnetic motor rotor, belonging to the field of motor. The high-speed permanent magnetic motor rotor protection sleeve solves the problems that the eddy current loss is large which leads to the temperature increment of the solid rotor to be excessively high easily and the permanent magnet beside the rotor to generate the irreversible high-temperature loss of field when a protection sleeve is added beside the rotor. The high-speed permanent magnetic motor rotor protection sleeve comprises a rotor protection sleeve (1) and is characterized in that a plurality of concave troughs (5) which are parallel to the central axis line of the rotor protection sleeve are uniformly distributed along the circumference of the external surface of the rotor protection sleeve (1); furthermore, two end surfaces of the high-speed permanent magnetic motor rotor protection sleeve (1) can be uniformly and fixedly provided with a plurality of bulges (4). The high-speed permanent magnetic motor rotor protection sleeve of the invention is applicable to the improvement of the existing high-speed permanent magnetic motor rotor protection sleeves and also to the production and processing of the high-speed permanent magnetic motor rotors.
Description
Technical field
The present invention relates to a kind of rotor protection sleeve of high speed permanent magnet motor, belong to machine field.
Background technology
Rotating speed height, the power density that high-speed permanent magnet motor not only has common high-speed electric expreess locomotive is big, stock utilization is high, dynamic response is very fast and characteristics such as transmission system efficiency height, and has efficient height, advantage that power factor is high.Therefore high-speed permanent magnet motor has a good application prospect in fields such as the centrifugal compressor of air-conditioning or refrigerator, accumulated energy flywheel, weaving, high speed grinding machine, hybrid vehicle, aviation, boats and ships.Particularly in distributed generation system, little by gas turbine powered high-speed engine volume, has higher mobility, the stand-by power supply that can be used for hospital, hotel and other critical facility, also can be used as independent current source or small hydropower station, remedy the deficiency of concentration supply power, have important practical value.
Higher the reaching more than the 1000Hz of stator winding power frequency during the high-speed permanent magnet motor operation; the rotary speed of rotor is changeed up to per minute several ten thousand; peripheral speed can reach more than the 200m/s; generally add the non-magnetic conduction sleeve of a high strength in the rotor permanent magnet outside; protect permanent magnet operate as normal under big centrifugal action, and can reduce the high frequency supplementary load loss of rotor-side.But because the metal coating sleeve is electric conductor, can produce a large amount of eddy current loss, even conduct heat, cause the permanent magnet temperature rise too high and produce the non-reversible high-temperature loss of excitation, motor is damaged to rotor block.
Summary of the invention
Eddy current loss is bigger when adding protection sleeve for the rotor-side that solves existing high-speed permanent magnet motor; cause the solid rotor temperature rise too high easily; make the rotor-side permanent magnet produce the problem of non-reversible high-temperature loss of excitation, the present invention has designed a kind of rotor protection sleeve of high speed permanent magnet motor.
Rotor protection sleeve of high speed permanent magnet motor, it is a cylinder-like structure, is evenly distributed with a plurality of grooves parallel with the rotor protection sleeve central axis along the circumference of rotor protection sleeve outer surface.
When using, rotor protection sleeve of high speed permanent magnet motor of the present invention is fixed on the outside of rotor.
Common rotor protection sleeve of high speed permanent magnet motor side does not consider to promote the measure of dispelling the heat; rotor protection sleeve of high speed permanent magnet motor of the present invention is the structure that has increased heat radiation in rotor one side; make by the structure of rotor protective sleeve is improved, increased the radiating effect of rotor-side.Advantage of the present invention has: one, the groove of rotor protection sleeve outer surface can be blocked the eddy current path of rotor protection sleeve; the eddy current loss that reduces eddy current and bring thus; and then during the tangible situation of the kelvin effects such as heating, particularly starting that reduced rotor-side, effect is more remarkable.Two, groove rotates with rotor high-speed, can play the volume wind action in air gap, has increased the relative velocity of interior air of air gap and rotor surface, and then has reached the effect that strengthens the air gap heat radiation.Temperature rise when three, having reduced rotor permanent magnet work, the working life that has prolonged permanent magnet and rotor, motor.
Through evidence, surface coefficient of heat transfer improves 40% when adopting the rotor operate as normal of rotor protection sleeve of high speed permanent magnet motor of the present invention, and rotor loss and temperature rise have obtained effectively reducing.
Description of drawings
Fig. 1 is the structural representation of rotor protection sleeve of high speed permanent magnet motor of the present invention, and Fig. 2 to Fig. 4 is the schematic diagram of three kinds of shapes of groove 3; Fig. 5 is the perspective view of rotor protection sleeve of high speed permanent magnet motor of the present invention.
Embodiment
Embodiment one: rotor protection sleeve of high speed permanent magnet motor, it is a cylinder-like structure, is evenly distributed with a plurality of grooves 3 parallel with rotor protection sleeve 1 central axis along the circumference of rotor protection sleeve 1 outer surface.
The cross section of the described groove 3 of present embodiment is axisymmetric shape, and the extended line of described symmetry axis and the central axis of rotor protection sleeve intersect.
Two sides in the cross section of the groove 3 described in the present embodiment are straight line or camber line.
Referring to Fig. 2 to Fig. 4, be that two sides in the described groove of present embodiment 3 cross sections are schematic diagrames of three kinds of situations of straight line.
When using, rotor protection sleeve of high speed permanent magnet motor 1 of the present invention is fixed on the outside of high speed permanent magnet motor rotor.
The rotor protection sleeve of high speed permanent magnet motor of present embodiment is on existing rotor protection sleeve architecture basics, has carried out simple transformation, and then has reached the purpose that rotor-side can be dispelled the heat.The architecture advances of present embodiment goes for the existing transformation that has the rotor protective sleeve, also is applicable to the processing of new product, not only improves convenient and easyly, and radiating effect is obvious.
Embodiment two: the difference of present embodiment and embodiment one described rotor protection sleeve of high speed permanent magnet motor is that it also comprises a plurality of protruding blocks 4, and a plurality of protruding blocks 4 evenly distribute and are fixed on two end faces of rotor protection sleeve 1.
The effect and the effect of the protruding block 4 that present embodiment increases have: one, because protruding block 4 is fixed on rotor protection sleeve 1 two ends; in the rotor high-speed rotation, played the effect of the flabellum of fan; can strengthen in motor gas-gap and formation axial flow in the groove 3; the circumferencial direction air movement that drives with shallow trench forms the cooling system of 3 D stereo, has strengthened the radiating effect of air-flow.Two, protruding block 4 is evenly distributed on two end faces of rotor protective sleeve, has played the effect to the rotor block static and dynamic equilibrium, reduces the appearance of uneven magnetic pull.
The described protruding block 4 of present embodiment can be positioned at the centre position of two grooves 3, like this, protruding block 4 and groove 3 is matched produce big as far as possible axial flow, and radiating effect is better.
Claims (5)
1, rotor protection sleeve of high speed permanent magnet motor, it is a cylinder-like structure, it is characterized in that, is evenly distributed with a plurality of grooves (3) parallel with rotor protection sleeve (1) central axis along the circumference of rotor protection sleeve (1) outer surface.
2, rotor protection sleeve of high speed permanent magnet motor according to claim 1 is characterized in that the cross section of described groove (3) is an axisymmetric shape, and the extended line of described symmetry axis and the central axis of rotor protection sleeve intersect.
3, rotor protection sleeve of high speed permanent magnet motor according to claim 1 is characterized in that two sides in the cross section of described groove (3) are straight line or camber line.
4, rotor protection sleeve of high speed permanent magnet motor according to claim 1 is characterized in that, it also comprises a plurality of protruding blocks (4), and a plurality of protruding blocks (4) evenly distribute and are fixed on two end faces of rotor protection sleeve (1).
5, rotor protection sleeve of high speed permanent magnet motor according to claim 2 is characterized in that described protruding block (4) is positioned at the centre position of two grooves (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100646668A CN101316058A (en) | 2008-06-04 | 2008-06-04 | Rotor protection sleeve of high speed permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100646668A CN101316058A (en) | 2008-06-04 | 2008-06-04 | Rotor protection sleeve of high speed permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101316058A true CN101316058A (en) | 2008-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100646668A Pending CN101316058A (en) | 2008-06-04 | 2008-06-04 | Rotor protection sleeve of high speed permanent magnet motor |
Country Status (1)
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| CN (1) | CN101316058A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104289A (en) * | 2011-03-15 | 2011-06-22 | 浙江大学 | Permanent-magnet motor rotor |
| CN102611222A (en) * | 2012-02-22 | 2012-07-25 | 北京交通大学 | Motor ventilating system with gear type wind mixing structure |
| CN103414286A (en) * | 2013-07-18 | 2013-11-27 | 西北工业大学 | Permanent magnet motor rotor protection sleeve with axial airflow heat dissipation function |
| CN103595204A (en) * | 2013-10-17 | 2014-02-19 | 泰豪科技股份有限公司 | Double-stator permanent magnet hub motor |
| CN104638788A (en) * | 2015-02-04 | 2015-05-20 | 浙江大学 | Rotor sheath of high-speed permanent magnet motor |
| CN104852495A (en) * | 2015-05-21 | 2015-08-19 | 浙江大学 | Permanent magnet fixing structure of surface-mounted high speed permanent magnet motor |
| CN104917318A (en) * | 2015-06-16 | 2015-09-16 | 哈尔滨工业大学 | Sheath of high-speed permanent magnet motor rotor |
| CN107749678A (en) * | 2017-11-27 | 2018-03-02 | 北京交通大学 | A kind of permanent magnet machine rotor sheath cooling structure device |
| CN109950993A (en) * | 2019-05-06 | 2019-06-28 | 哈尔滨工业大学 | A kind of high speed rotor of motor field structure |
-
2008
- 2008-06-04 CN CNA2008100646668A patent/CN101316058A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104289A (en) * | 2011-03-15 | 2011-06-22 | 浙江大学 | Permanent-magnet motor rotor |
| CN102611222A (en) * | 2012-02-22 | 2012-07-25 | 北京交通大学 | Motor ventilating system with gear type wind mixing structure |
| CN102611222B (en) * | 2012-02-22 | 2014-10-29 | 北京交通大学 | Motor ventilating system with gear type wind mixing structure |
| CN103414286A (en) * | 2013-07-18 | 2013-11-27 | 西北工业大学 | Permanent magnet motor rotor protection sleeve with axial airflow heat dissipation function |
| CN103595204A (en) * | 2013-10-17 | 2014-02-19 | 泰豪科技股份有限公司 | Double-stator permanent magnet hub motor |
| CN103595204B (en) * | 2013-10-17 | 2016-03-23 | 泰豪科技股份有限公司 | A kind of Double-stator permanent magnet hub motor |
| CN104638788A (en) * | 2015-02-04 | 2015-05-20 | 浙江大学 | Rotor sheath of high-speed permanent magnet motor |
| CN104852495A (en) * | 2015-05-21 | 2015-08-19 | 浙江大学 | Permanent magnet fixing structure of surface-mounted high speed permanent magnet motor |
| CN104917318A (en) * | 2015-06-16 | 2015-09-16 | 哈尔滨工业大学 | Sheath of high-speed permanent magnet motor rotor |
| CN107749678A (en) * | 2017-11-27 | 2018-03-02 | 北京交通大学 | A kind of permanent magnet machine rotor sheath cooling structure device |
| CN107749678B (en) * | 2017-11-27 | 2019-12-03 | 北京交通大学 | A kind of permanent magnet machine rotor sheath cooling structure device |
| CN109950993A (en) * | 2019-05-06 | 2019-06-28 | 哈尔滨工业大学 | A kind of high speed rotor of motor field structure |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081203 |