CN102299599A - High-speed electric machine with stator and permanent magnet - Google Patents
High-speed electric machine with stator and permanent magnet Download PDFInfo
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- CN102299599A CN102299599A CN2011102484937A CN201110248493A CN102299599A CN 102299599 A CN102299599 A CN 102299599A CN 2011102484937 A CN2011102484937 A CN 2011102484937A CN 201110248493 A CN201110248493 A CN 201110248493A CN 102299599 A CN102299599 A CN 102299599A
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Abstract
The invention provides a high-speed electric machine with a stator and permanent magnets. The high-speed electric machine consists of two stator end magnetic rings, the permanent magnets, a stator back yoke, a stator core, a winding coil, a rotor core, rotor shafts and rotor end magnetic rings, wherein the permanent magnets are arranged in the two stator end magnetic rings, and the rotor end magnetic rings are arranged in the permanent magnets; gaps are reserved between the permanent magnets and the rotor end magnetic rings, so that shaft end air gaps can be formed; the stator back yoke is positioned between the two stator end magnetic rings and is internally provided with the stator core, the winding coil is arranged on the teeth of the stator core, and the stator core is internally provided with the rotor core; gaps are reserved between the stator core and the rotor core, thus forming shaft hollow air gaps; and the rotor shafts are arranged in the rotor core and the rotor end magnetic rings and is used for providing magnetic paths for rotor laminated layers and the rotor end magnetic rings. The high-speed electric machine provided by the invention has the advantages of high rotor mechanical strength, less permanent magnet loss, good permanent magnet heat dissipation condition, convenience in processing and manufacturing, and the like.
Description
Technical field
The present invention relates to a kind of high-speed electric expreess locomotive, particularly a kind of permanent magnet places on the stator, rotor mechanical intensity height, high-speed electric expreess locomotive that the permanent magnet radiating condition is good, can be used as the drive motors of high speed equipment such as molecular pump, centrifuge.
Background technology
High-speed electric expreess locomotive is owing to the rotating speed height, and the power density of motor is big, and its physical dimension is much smaller than the identical middle slowspeed machine of power output, economical with materials effectively; The moment of inertia of high-speed electric expreess locomotive is little, so dynamic response is very fast; High-speed electric expreess locomotive can directly link to each other with prime mover or load simultaneously, has saved traditional mechanical variable speed device, thereby can reduce the efficient of noise and raising drive system.Particularly magneto is simple in structure owing to it, power energy density height and no excitation loss, efficient advantages of higher, thereby obtained extensive studies and application.
For existing high-speed permanent magnet motor; because its rotating speed height; the rotor surface linear velocity is big; thereby need take corresponding measure to protect permanent magnet; usually the method that adopts has two kinds: a kind of method is to adopt high strength alloy steel not destroyed by the centrifugal force that high speed rotating brings with the protection permanent magnet as sheath and with the permanent magnet interference fit, and another kind of method is to adopt the carbon fiber colligation not destroyed by the centrifugal force that high speed rotating brings with the protection permanent magnet.Adopt high strength alloy steel as sheath and with permanent magnet interference fit method, processing inconvenience, and, can will induce bigger eddy current loss in the sheath, thereby cause the permanent magnet temperature rise too high because sheath is solid; Carbon fiber has the intensity height, lightweight advantage, but its price is higher, the technology for binding complexity, and be the non-conductor of heat, be unfavorable for the heat radiation of permanent magnet.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiency of existing structure, a kind of rotor mechanical intensity height, easy to process is provided, help the high-speed electric expreess locomotive of permanent magnet heat radiation.
Technical solution of the present invention is: the stator permanent magnet high-speed electric expreess locomotive, by the stator end magnetic guiding loop, permanent magnet, stator back of the body yoke, stator core, winding coil, rotor core, armature spindle, the rotor tip magnetic guiding loop is formed, the stator permanent magnet high-speed electric expreess locomotive has 2 stator end magnetic guiding loops, be positioned at stator permanent magnet high-speed electric expreess locomotive stator two ends, each stator end magnetic guiding loop inside is permanent magnet, permanent magnet is an annulus, the employing rare earth permanent-magnetic material is made, magnetizing direction is radial, and the permanent magnet magnetizing direction of both sides is identical, two permanent magnet magnetizing directions be all radial outwards or be all radial outwards, permanent magnet inside is the rotor tip magnetic guiding loop, the rotor tip magnetic guiding loop is a lamination, folded system direction is axial, leave the gap in the middle of permanent magnet and the rotor tip magnetic guiding loop, form the axle head air-gap, stator back of the body yoke is positioned in the middle of two stator end magnetic guiding loops, stator back of the body yoke inside is stator core, rotor core is 2 utmost point salient poles, lamination, folded system direction is axial, the stator tooth number of stator core is 6, be equipped with centralized winding coil on the stator tooth, 6 winding coils are formed three phase windings, mechanical angle differs 180 ° winding coil and forms a phase, stator core inside is rotor core, rotor core and rotor tip magnetic guiding loop inside are armature spindles, armature spindle is that the good material of magnetic property is made, armature spindle provides flux path for rotor core and rotor tip magnetic guiding loop, the stator of whole stator permanent magnet high-speed electric expreess locomotive is by the stator end magnetic guiding loop, permanent magnet, stator back of the body yoke, stator core and winding coil are formed, and rotor is by rotor core, armature spindle and rotor tip magnetic guiding loop are formed.
The principle of such scheme is: permanent magnet 2 provides magnetizing flux for motor, magnetizing flux exist all the time and direction constant, but variation along with rotor-position, its path of magnetizing flux conversion, make that the magnetic linkage in the winding changes on the stator tooth, thereby in the concentrated winding of motor, produce back-emf, by control the stator winding break-make in good time according to rotor-position, thereby produce the torque of constant direction, the drive motors high speed rotating.Figure 4 shows that the graph of a relation of winding current break-make and rotor-position, when rotor is in position shown in Fig. 4 a, A phase winding coil conducting among Fig. 4 a and other two-phase winding coils are in off state, then the magnetic field that produces of A phase winding makes the torque of direction shown in the n among the rotor generation figure, when the central lines of the center line of rotor core salient pole and A phase winding place stator tooth, A phase winding coil turn-offs, only B phase winding energising this moment, when the central lines of the center line of rotor core salient pole and B phase winding place stator tooth, B phase winding coil turn-offs, only C phase winding energising, three phase windings in turn conducting in each 60 ° of mechanical angle scope so, thereby can form the torque of constant direction.
The present invention's advantage compared with prior art is: permanent magnet of the present invention places on the stator; need not the sheath protection; rotor is a lamination, and processing technology is simple, the mechanical strength height; place epitrochanterian high-speed electric expreess locomotive to compare with permanent magnet; be more suitable at a high speed or the ultrahigh speed operation, permanent magnet places on the stator radiating condition good, and permanent magnet need not the sheath protection; because rotor core and rotor tip magnetic guiding loop are lamination, the eddy current loss that is produced on rotor is less.
Description of drawings
Fig. 1 is a stator permanent magnet high-speed electric expreess locomotive axial, cross-sectional view of the present invention;
Fig. 2 is a stator permanent magnet high speed rotor of motor structure chart of the present invention;
Fig. 3 is stator permanent magnet high-speed electric expreess locomotive stator structure figure of the present invention;
Fig. 4 is the graph of a relation of stator permanent magnet high-speed electric expreess locomotive winding coil electric current of the present invention and rotor-position.
Embodiment
Show as Fig. 1, be stator permanent magnet high-speed electric expreess locomotive of the present invention, it is by 2 stator end magnetic guiding loops 1,2 permanent magnets 2,1 stator back of the body yoke 3,1 stator core 4,6 winding coils 5,1 rotor core 6,1 armature spindle 7,2 rotor tip magnetic guiding loops 8 are formed, wherein the stator permanent magnet high-speed electric expreess locomotive has two stator end magnetic guiding loops 1, be positioned at stator permanent magnet high-speed electric expreess locomotive stator shaft orientation two ends, each stator end magnetic guiding loop 1 inside is permanent magnet 2, permanent magnet 2 is an annulus, for rare earth permanent-magnetic material (as neodymium iron boron, SmCo etc.) or ferrite permanent magnet make, magnetizing direction is radial magnetizing, and two permanent magnet 2 magnetizing directions are identical, be all radial inwardly or be all outside the radiation direction, also available polylith permanent magnet parallel magnetization along the circumferential direction is spliced to form.Permanent magnet 2 inner radial are rotor tip magnetic guiding loops 8, rotor tip magnetic guiding loop 8 is a lamination, folded system direction is axial, permanent magnet 2 and the rotor tip magnetic guiding loop 8 middle gaps of leaving, form axle head air-gap 9, gas length is taken as 0.2mm～1mm, present embodiment is taken as 0.5mm, stator back of the body yoke 3 is positioned in the middle of two stator end magnetic guiding loops 8, stator back of the body yoke 3 inside are stator cores 4, the stator tooth number of stator core 4 is 6, the mechanical angle number of degrees that the tooth inner edge of stator core 4 accounts for are taken as 20 °～40 °, present embodiment is taken as 30 °, be equipped with centralized winding coil 5 on the stator tooth, 6 winding coils 5 are formed three phase windings, mechanical angle differs 180 ° winding coil 5 compositions one phase, stator core 4 inside are rotor cores 6, the mechanical angle number of degrees that the tooth inner edge of rotor core 6 accounts for are taken as 45 °～135 °, present embodiment is taken as 90 °, form air-gap 10 in the axle between stator core 4 and the rotor core 6, the length of air-gap 10 is taken as 0.2mm～1mm in the axle, and present embodiment is taken as 0.5mm, rotor core 6 is armature spindles 7 with rotor tip magnetic guiding loop 8 inside, and armature spindle 7 provides flux path for rotor core 6 and rotor tip magnetic guiding loop 8.
Figure 2 shows that stator permanent magnet high speed rotor of motor structure chart of the present invention, the stator permanent magnet high speed rotor of motor is made up of rotor core 6, armature spindle 7, rotor tip magnetic guiding loop 8, rotor core 6 and rotor tip magnetic guiding loop 8 are lamination, and folded system direction is that axially armature spindle 7 is a magnetic conductive axis.Figure 3 shows that stator permanent magnet high-speed electric expreess locomotive band winding stator structure figure of the present invention, stator permanent magnet high-speed electric expreess locomotive stator is made up of stator back of the body yoke 3, stator core 4, winding coil 5, the number of stator core 4 teeth is 6, be equipped with centralized winding coil 5 on each stator core 4 tooth, the outside of stator core 4 is stator back of the body yokes 3, stator core 4 is a lamination, and folded system direction is axial.
The used stator end magnetic guiding loop 1 of the invention described above, stator back of the body yoke 3, armature spindle 7 are all made with the good material of magnetic property, as magnetic materials such as electrical pure iron, various carbon steel, cast iron, cast steel, steel alloy, 1J50 and 1J79 etc.Stator core 4, rotor core 6, rotor tip magnetic guiding loop 8 can form with magnetic property good electric thin steel sheet such as the folded system of magnetic material punching presses such as electrical pure iron, electrical steel plate DR510, DR470, DW350,1J50 and 1J79.Paint-dipping drying forms after the good electromagnetic wire coiling of winding coil 5 usefulness conductions.
Claims (6)
1. stator permanent magnet high-speed electric expreess locomotive, by stator end magnetic guiding loop (1), permanent magnet (2), stator back of the body yoke (3), stator core (4), winding coil (5), rotor core (6), armature spindle (7), rotor tip magnetic guiding loop (8) is formed, wherein the stator permanent magnet high-speed electric expreess locomotive has 2 stator end magnetic guiding loops (1), the inner radial of each stator end magnetic guiding loop (1) is permanent magnet (2), permanent magnet (2) inside is rotor tip magnetic guiding loop (8), permanent magnet (2) and the middle gap of leaving of rotor tip magnetic guiding loop (8), form axle head air-gap (9), stator back of the body yoke (3) is positioned in the middle of two stator end magnetic guiding loops (1), stator back of the body yoke (3) inside is stator core (4), be equipped with winding coil (5) on stator core (4) tooth, stator core (4) inside is rotor core (6), leave the gap between stator core (4) and the rotor core (6), form air-gap (10) in the axle, rotor core (6) is armature spindle (7) with the inner radial of rotor tip magnetic guiding loop (8), and armature spindle (7) provides flux path for rotor core (6) and rotor tip magnetic guiding loop (8).
2. stator permanent magnet high-speed electric expreess locomotive according to claim 1 is characterized in that: described permanent magnet (2) is an annulus, adopts rare earth permanent-magnetic material to make, and magnetizes along radial.
3. stator permanent magnet high-speed electric expreess locomotive according to claim 1 and 2 is characterized in that: two permanent magnets of described axle head (2) magnetizing direction is identical, be all radial inside or radial outwards, or adopt polylith permanent magnet parallel magnetization to be spliced to form.
4. stator permanent magnet high-speed electric expreess locomotive according to claim 1 is characterized in that: described stator core (4) number of teeth amount is 6, and the winding coil of being put on the tooth (5) is for centralized.
5. stator permanent magnet high-speed electric expreess locomotive according to claim 1 is characterized in that: described rotor tip magnetic guiding loop (8) is a lamination, and folded system direction is axial.
6. stator permanent magnet high-speed electric expreess locomotive according to claim 1 is characterized in that: described rotor core (6) is lamination the two poles of the earth salient-pole structure, and folded system direction is axial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110248493 CN102299599B (en) | 2011-08-26 | 2011-08-26 | High-speed electric machine with stator and permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110248493 CN102299599B (en) | 2011-08-26 | 2011-08-26 | High-speed electric machine with stator and permanent magnet |
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| Publication Number | Publication Date |
|---|---|
| CN102299599A true CN102299599A (en) | 2011-12-28 |
| CN102299599B CN102299599B (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110248493 Expired - Fee Related CN102299599B (en) | 2011-08-26 | 2011-08-26 | High-speed electric machine with stator and permanent magnet |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151862A (en) * | 2013-03-15 | 2013-06-12 | 西安交通大学 | High-speed permanent magnetic synchronous motor rotor structure |
| CN107093938A (en) * | 2017-06-15 | 2017-08-25 | 深圳麦格动力技术有限公司 | Magnetic suspension motor and domestic air conditioning |
| CN109728659A (en) * | 2018-12-26 | 2019-05-07 | 南京越博电驱动系统有限公司 | A kind of stator permanent magnetic type transverse flux motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5030867A (en) * | 1989-08-02 | 1991-07-09 | Technical Associate Co., Ltd. | Same polarity induction generator |
| CN1988324A (en) * | 2005-12-23 | 2007-06-27 | 中国科学院电工研究所 | High speed magnetic resistance motor |
| JP2008141943A (en) * | 2006-11-07 | 2008-06-19 | Asmo Co Ltd | Direct-current motor and method for manufacturing the direct-current motor |
| US20090236930A1 (en) * | 2005-04-28 | 2009-09-24 | Denso Corporation | Motor and control unit thereof |
| CN201877912U (en) * | 2010-12-08 | 2011-06-22 | 全天雨 | Concave air-gap power generator |
-
2011
- 2011-08-26 CN CN 201110248493 patent/CN102299599B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5030867A (en) * | 1989-08-02 | 1991-07-09 | Technical Associate Co., Ltd. | Same polarity induction generator |
| US20090236930A1 (en) * | 2005-04-28 | 2009-09-24 | Denso Corporation | Motor and control unit thereof |
| CN1988324A (en) * | 2005-12-23 | 2007-06-27 | 中国科学院电工研究所 | High speed magnetic resistance motor |
| JP2008141943A (en) * | 2006-11-07 | 2008-06-19 | Asmo Co Ltd | Direct-current motor and method for manufacturing the direct-current motor |
| CN201877912U (en) * | 2010-12-08 | 2011-06-22 | 全天雨 | Concave air-gap power generator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151862A (en) * | 2013-03-15 | 2013-06-12 | 西安交通大学 | High-speed permanent magnetic synchronous motor rotor structure |
| CN107093938A (en) * | 2017-06-15 | 2017-08-25 | 深圳麦格动力技术有限公司 | Magnetic suspension motor and domestic air conditioning |
| CN107093938B (en) * | 2017-06-15 | 2023-09-29 | 北京昆腾迈格技术有限公司 | Magnetic suspension motor and household air conditioner |
| CN109728659A (en) * | 2018-12-26 | 2019-05-07 | 南京越博电驱动系统有限公司 | A kind of stator permanent magnetic type transverse flux motor |
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| CN102299599B (en) | 2013-01-02 |
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