CN203872024U - Switched reluctance motor - Google Patents
Switched reluctance motor Download PDFInfo
- Publication number
- CN203872024U CN203872024U CN201420297225.3U CN201420297225U CN203872024U CN 203872024 U CN203872024 U CN 203872024U CN 201420297225 U CN201420297225 U CN 201420297225U CN 203872024 U CN203872024 U CN 203872024U
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- CN
- China
- Prior art keywords
- rotor
- described rotor
- stator
- switched reluctance
- reluctance machines
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a switched reluctance motor which comprises a rotor assembly having a rotor fixing member (10) and a plurality of rotor cores (20) arranged on the rotor fixing member (10) and spacedly arranged along the circumferential direction. The rotor fixing member (10) is a nonmagnetic conductive member and has a rotating shaft fixing portion (11). The switched reluctance motor also comprises a stator core (30) which sleeves the rotor assembly and is provided with a stator yoke portion (31) and a plurality of stator tooth portions (32) positioned on the inner side of the stator yoke portion (31). Each rotor core (20) comprises a rotor body (21) and a rotor installation portion (23), wherein the rotor body (21) is fixed on the rotor fixing member (10) through the rotor installation portion. An air gap is formed between adjacent two rotor bodies (21). The switched reluctance motor is highly efficient.
Description
Technical field
The utility model relates to technical field of motors, in particular to a kind of switched reluctance machines.
Background technology
At present, switched reluctance machines is a kind of novel buncher, governing system has direct current concurrently, exchanges the advantage of two class governing systems, its firm, speed-regulating range width, speed adjusting performance excellence simple in structure and in whole speed adjustable range, have greater efficiency and system reliability advantages of higher is widely used in the fields such as household electrical appliance, Aeronautics and Astronautics, electronics, machinery and motor vehicle.Application number be 200910263110.6 and the open text of the patent of 201010102546.X all disclose a kind of name to be called composite excitation partitioned formula fixed, rotor switched reluctance motor, using application number as 200910263110.6 patents, open text is as immediate prior art, although it has good performance, but inevitably, between adjacent two rotor cores, there is barrier (part for fixed mount), reduce the magnetic induction in magnetic field, in addition, in the time that motor high frequency turns round, in rotor core, there is the magnetic field of alternation, therefore produce very strong axial eddy, its shortcoming is, because fan-shaped block rotor embeds not in magnetic conduction rotor metallic sheath completely, magnetic conduction rotor metallic sheath is unfixing with the contact of segmental rotor tooth piece, the axial eddy producing can become increase square doubly by magnetic conduction rotor metallic sheath not, axial eddy loss is larger on the impact of motor iron loss, along with the increasing of axial eddy loss, motor iron loss increases large, cause electric efficiency to reduce, that is to say, in identical output situation, loss increases, input power needs to increase.
Utility model content
The utility model aims to provide one and has more high efficiency switched reluctance machines.
To achieve these goals, the utility model provides a kind of switched reluctance machines, comprise: rotor assembly, has rotor fixture and be fixedly installed on rotor fixture and at upwards multiple rotor cores spaced apart of week, rotor fixture is non-magnetic and has rotating shaft fixed part; Stator core, be set on rotor assembly, stator core has stator yoke portion and is positioned at multiple stator teeths of the inner side of stator yoke portion, rotor core has rotor body and rotor installation portion, rotor body is fixed on rotor fixture by rotor installation portion, between adjacent two rotor bodies, forms air gap.
Further, on rotor installation portion, be provided with axially extending bore.
Further, adjacent two rotor cores week upwards relative two side surface be the plane being parallel to each other.
Further, rotor fixture have with multiple rotor installation portions one to one multiple rotors that hold corresponding rotor installation portion hold groove, a part for rotor installation portion embeds corresponding rotor and holds in groove.
Further, rotor body has the rotor installed surface towards rotor fixture, and rotor installation portion protrudes from rotor installed surface, between rotor installed surface and rotor fixture, has radial clearance.
Further, rotor body has the rotor cambered surface towards stator core, stator teeth have towards rotor assembly and with the suitable stator cambered surface of rotor cambered surface.
Further, stator teeth comprises stator pole shoes.
Further, the minimum range between adjacent two rotor cores is less than the minimum range between adjacent two stator teeths.
Further, side surface has two axial edge that are parallel to each other diametrically, stator teeth upwards has two stator side that mutually deviate from week, and the minimum range between two stator side of stator teeth is greater than the distance between two axial edge that are parallel to each other of side surface.
Further, rotor installation portion is trapezoidal on cross section perpendicular to axial direction.
Application the technical solution of the utility model, because multiple rotor cores are upwards spaced apart in week, and form air gap between adjacent two rotor bodies, therefore, magnetic field between adjacent two rotor bodies can not be subject to external substance and disturb (for example barrier between adjacent two rotor bodies), the magnetic line of force between adjacent two rotor bodies is more intensive, and the magnetic induction in the magnetic field that switched reluctance machines of the present utility model forms is more obvious.Therefore, switched reluctance machines of the present utility model has higher efficiency.
Brief description of the drawings
The Figure of description that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows according to the master of the embodiment of switched reluctance machines of the present utility model and looks schematic diagram;
Fig. 2 shows the switched reluctance machines of Fig. 1 at the enlarged diagram at D place;
Fig. 3 shows the contrast phasor of the iron loss of the switched reluctance machines of Fig. 1 and the switched reluctance machines of immediate prior art;
The magnetic circuit schematic diagram of the switched reluctance machines that Fig. 4 a shows Fig. 1 in the time that 0 spends;
The magnetic circuit schematic diagram of the switched reluctance machines that Fig. 4 b shows Fig. 1 in the time that 15 spend;
The magnetic circuit schematic diagram of the switched reluctance machines that Fig. 4 c shows Fig. 1 in the time that 30 spend;
The magnetic circuit schematic diagram of the switched reluctance machines that Fig. 4 d shows Fig. 1 in the time that 45 spend.
Wherein, the Reference numeral in above-mentioned figure is as follows:
10, rotor fixture; 11, rotating shaft fixed part; 12, interval plane; 20, rotor core; 21, rotor body; 22, rotor installed surface; 23, rotor installation portion; 24, axially extending bore; 25, side surface; 26, rotor cambered surface; 30, stator core; 31, stator yoke portion; 32, stator teeth; 33, stator cambered surface; 34, stator pole shoes; 35, stator side.
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
As shown in Figure 1, the switched reluctance machines of the present embodiment comprises rotor assembly and stator core 30.Rotor assembly has rotor fixture 10 and is fixedly installed on rotor fixture 10 and at upwards multiple rotor cores 20 spaced apart of week, rotor fixture 10 is for non-magnetic and have rotating shaft fixed part 11.Stator core 30 is set on rotor assembly, that is to say, rotor assembly is located in the inside of stator core 30 rotationally.Stator core 30 has stator yoke portion 31 and is positioned at multiple stator teeths 32 of the inner side of stator yoke portion 31, rotor core 20 has rotor body 21 and rotor installation portion 23, rotor body 21 is fixed on rotor fixture 10 by rotor installation portion 23, rotor body 21 is between corresponding rotor installation portion 23 and stator core 30, between adjacent two rotor bodies 21, form air gap, that is to say do not there is any barrier between adjacent two rotor bodies 21.Certainly, the switched reluctance machines of the present embodiment also comprises winding (not shown), and winding adopts distribution volume structure, when energising operation for often only solely, conducting work in turn, certain, also can adopt other conventional structures.Rotating shaft fixed part 11 is preferably rotating shaft and wears through hole.
The switched reluctance machines of application the present embodiment, because multiple rotor cores 20 are upwards spaced apart in week, and form air gap between adjacent two rotor bodies 21, therefore, magnetic field between adjacent two rotor bodies 21 can not be subject to external substance and disturb (for example barrier between adjacent two rotor bodies 21), the magnetic line of force between adjacent two rotor bodies 21 is more intensive, and the magnetic induction in the magnetic field that the switched reluctance machines of the present embodiment forms is more obvious.As the above analysis, the switched reluctance machines of the present embodiment has higher efficiency.In addition, rotor core 20 adopts fraction block structure, can reduce the use amount of material, cost-saving.
As shown in Figure 1, in the present embodiment, rotor body 21 has the rotor installed surface 22 towards rotor fixture 10, and rotor installation portion 23 protrudes from rotor installed surface 22, between rotor installed surface 22 and rotor fixture 10, has radial clearance.Because rotor installed surface 22 and rotor fixture 10 have radial clearance, that is to say, rotor body 21 has radial clearance with rotor fixture 10, and rotor body 21 can reduce the eddy current loss in rotor core 20 with the noncontact design of rotor fixture 10.In order further to set forth above-mentioned technique effect, as shown in Figure 3, the switched reluctance machines of the present embodiment with the immediate prior art of describing in background technology in the situation that other parameters are identical, in order to have identical power stage, the needed input power of switched reluctance machines of the present embodiment is much smaller than the needed input power of immediate prior art of describing in background technology.As the above analysis, the switched reluctance machines of the present embodiment has higher efficiency.
As shown in Figure 1, in the present embodiment, on rotor installation portion 23, be provided with axially extending bore 24.The setting position of axially extending bore 24 is near the bottom of rotor core 20, and this axially extending bore 24 plays the effect every magnetic, further reduces the eddy current loss that rotor core 20 leakage fields cause.In the present embodiment, on each rotor core 20, be provided with two axially extending bores 24, in the situation that reducing eddy current loss, ensured the intensity of rotor installation portion 23 as far as possible.
As shown in Figure 1, in the present embodiment, adjacent two rotor cores 20 in the upwards plane of relative two side surface 25 for being parallel to each other of week.Adopt said structure to be conducive to reduce minimum inductance, increase salient pole ratio, and reduce due to the full torque pulsation causing in part simultaneously.
As shown in Figure 1, in the present embodiment, rotor fixture 10 have with multiple rotor installation portions 23 one to one multiple rotors that hold corresponding rotor installation portion 23 hold groove (in figure not mark), a part for rotor installation portion 23 embeds corresponding rotor and holds in groove.Because rotor installation portion 23 adopts Embedded mounting means, not only conveniently rotor installation portion 23 is pressed into rotor holds in groove and form interference fit, and what can make that rotor installation portion 23 coordinates with rotor fixture 10 is more firm, the stability when switched reluctance machines work that improves the present embodiment.
As shown in Figure 1, in the present embodiment, rotor installed surface 22 is plane, is provided with the interval plane 12 arranging towards corresponding rotor installed surface 22 and with these rotor installed surface 22 parallel interval on rotor fixture 10.Interval plane 12 arranges and can further reduce the eddy current loss in rotor core 20 with rotor installed surface 22 intervals.Certainly,, as feasible execution mode, rotor installed surface 22 can be cambered surface or other nonplanar structures.Distance between interval plane 12 and rotor installed surface 22 is α, α > 0.2mm.
As shown in Figure 1, in the present embodiment, rotor body 21 has the rotor cambered surface 26 towards stator core 30, stator teeth 32 have towards rotor assembly and with the suitable stator cambered surface 33 of rotor cambered surface 26.Adopting the rotor body 21 of said structure is sector structure, and when rotor assembly is in the time rotating, rotor body 21 has less minimizing windage, reduces the windmill loss in rotor assembly High Rotation Speed process.
As shown in Figure 1, in the present embodiment, stator teeth 32 comprises stator pole shoes 34.Stator pole shoes 34 is set can lifting motor copper factor, and then lifting motor efficiency.Because multiple rotor cores 20 upwards arranged at interval in week, therefore, in the time of minimum inductance position, as every magnetic channel by the air gap between adjacent rotor core 20, and then stator pole shoes 34 is set can't reduces the salient pole ratio of motor, can not reduce electric efficiency, in the situation that guaranteed performance does not reduce, manufacturability is improved.If rely on the beeline between stator teeth and rotor to carry out every magnetic, will cause beeline to decline once increase pole shoe, and then salient pole is than declining.
As shown in Figure 2, in the present embodiment, the minimum range (the namely distance between two side surface 25) between adjacent two rotor cores 20 is G
r, the minimum range (the namely distance between two stator pole shoes 34) between adjacent two stator teeths 32 is G
s, wherein, G
rbe less than G
s.Adopt said structure to be conducive to reduce leakage field.The surface towards stator core 30 of rotor core 20 is the first circumferential cambered surface of axis rotation of sub-component of rotating, the surface towards rotor assembly of stator teeth 32 is to rotate the second week of axis rotation of sub-component to cambered surface, and second week is θ to the difference of the radius of cambered surface and the radius of the first circumferential cambered surface
2θ<G
s－G
r<8θ。
As shown in Figure 2, in the present embodiment, side surface 25 has two axial edge (not marking in figure) that are parallel to each other diametrically, stator teeth 32 upwards has 35, two stator side 35 of two stator side of being parallel to each other and mutually deviate from week between stator yoke portion 31 and corresponding stator pole shoes 34.Distance between two stator side 35 of stator teeth 32 is Wt, and the distance between two axial edge that are parallel to each other of side surface 25 is Wr, and wherein, Wt is greater than Wr.Said structure can guarantee to reduce leakage field supersaturation not in iron core simultaneously, in the present embodiment, and W
r=k*W
t, and k=0.6～0.9.If two stator side 35 are not parallel, Wt is two minimum ranges between stator side 35 so.
As shown in Figure 1, in the present embodiment, rotor installation portion 23 is trapezoidal on cross section perpendicular to axial direction.Adopt more firm that trapezoid cross section can make that rotor installation portion 23 coordinates with rotor body 21, the stability when switched reluctance machines that improves the present embodiment is worked.As feasible execution mode, rotor installation portion 23 is triangular in shape or oval on cross section perpendicular to axial direction.
As shown in Figure 1, in the present embodiment, for reducing torque pulsation, and ensure two-way startup, its rotor core 20 should meet with the polar arc relation of stator core 30:
Wherein, N
rfor the rotor number of teeth, N
sfor the stator number of teeth, β
rfor the circumferential arc length (namely rotor pole arc) of rotor cambered surface 26, β
sfor the circumferential arc length (namely stator polar arc) of stator cambered surface 33; δ is greater than 0 positive number, preferred δ=2 °～6 °.
The switched reluctance machines of the present embodiment is three-phase 12 groove 8 utmost points, certainly, also adopts three-phase 24 groove 16 utmost points, four 8 groove 6 utmost points, four, 16 groove 12 utmost points, four, 24 groove 18 utmost points, five, 10 groove 8 utmost points, five switched reluctance machines of 20 groove 16 utmost points mutually mutually mutually mutually mutually.
In the present embodiment, rotor fixture 10 can adopt the non-magnet_conductible materials such as stainless steel, cast aluminium and highstrenghtpiston's injection moulding, and rotor fixture 10 is preferably rotor fixed block.Stator core 30 and rotor core 20 are and are overrided to form as the stacking material of silicon steel sheet or non-crystalline material.
In addition, the tangential magnetic pull component with the switched reluctance machines of said structure increases, and under identical output, motor noise obviously reduces.The magnetic conduction part of rotor assembly is few, and the magnetic circuit of stator core 30 is short, effectively reduces iron loss, and electric efficiency promotes.
The specific works principle of the switched reluctance machines of the present embodiment is as follows:
As shown in Fig. 4 a: A is conducted, A phase magnetic circuit carries out closure by the gap between the gap between stator yoke portion, stator teeth, interval plane and rotor installed surface, adjacent two rotor cores, and due to longer through air magnetic circuit, air gap flux density is low; Rotor core starts rotation to 15 degree under magnetic pull effect;
As shown in Figure 4 b: A is conducted, A phase magnetic circuit carries out closure by the forward position of the gap between stator yoke portion, stator teeth, interval plane and rotor installed surface, rotor core, because process major part is magnetic conduction substance, the close increase of magnetic, magnetic pull increases, can't make the close unlimited increase of magnetic but interpolar part is saturated, rotor core rotates to 30 degree.
As shown in Fig. 4 c: A is conducted, A phase magnetic circuit carries out closure by the mid portion of the gap between stator yoke portion, stator teeth, interval plane and rotor installed surface, rotor core, magnetic conductive area increases, the close further increase of magnetic, magnetic pull increases, along with the alignment gradually of position, magnetic pull starts to reduce, A starts to turn-off, B starts conducting mutually, B phase magnetic circuit carries out closure by the gap between the gap between stator yoke portion, stator teeth, interval plane and rotor installed surface, adjacent two rotor cores, and rotor core rotates to 45 degree.
As shown in Fig. 4 d: B is conducted, B phase magnetic circuit carries out closure by the forward position of the gap between stator yoke portion, stator teeth, interval plane and rotor installed surface, rotor core and carries out closure, repeats A phase process, and rotor continues rotation.Wherein, the dotted line in Fig. 4 a to Fig. 4 d is magnetic circuit, and dotted line quantity more multilist shows that magnetic field is stronger.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. a switched reluctance machines, comprising:
Rotor assembly, there is rotor fixture (10) and be fixedly installed on that described rotor fixture (10) is upper and at upwards multiple rotor cores (20) spaced apart of week, described rotor fixture (10) is for non-magnetic and have rotating shaft fixed part (11);
Stator core (30), is set on described rotor assembly, and described stator core (30) has stator yoke portion (31) and is positioned at multiple stator teeths (32) of the inner side of described stator yoke portion (31),
It is characterized in that, described rotor core (20) has rotor body (21) and rotor installation portion (23), it is upper that described rotor body (21) is fixed on described rotor fixture (10) by described rotor installation portion (23), between adjacent two described rotor bodies (21), forms air gap.
2. switched reluctance machines according to claim 1, is characterized in that, is provided with axially extending bore (24) on described rotor installation portion (23).
3. switched reluctance machines according to claim 1, is characterized in that, adjacent two described rotor cores (20) in upwards relative two side surface (25) plane for being parallel to each other of week.
4. switched reluctance machines according to claim 1, it is characterized in that, described rotor fixture (10) have with multiple described rotor installation portions (23) one to one multiple rotors that hold corresponding described rotor installation portion (23) hold groove, the part of described rotor installation portion (23) embeds corresponding described rotor and holds in groove.
5. switched reluctance machines according to claim 1, it is characterized in that, described rotor body (21) has the rotor installed surface (22) towards described rotor fixture (10), described rotor installation portion (23) protrudes from described rotor installed surface (22), between described rotor installed surface (22) and described rotor fixture (10), has radial clearance.
6. switched reluctance machines according to claim 1, it is characterized in that, described rotor body (21) has the rotor cambered surface (26) towards described stator core (30), described stator teeth (32) have towards described rotor assembly and with the suitable stator cambered surface (33) of described rotor cambered surface (26).
7. switched reluctance machines according to claim 1, is characterized in that, described stator teeth (32) comprises stator pole shoes (34).
8. switched reluctance machines according to claim 1, is characterized in that, the minimum range (G between adjacent two described rotor cores (20)
r) be less than the minimum range (G between adjacent two described stator teeths (32)
s).
9. switched reluctance machines according to claim 3, it is characterized in that, described side surface (25) has two axial edge that are parallel to each other diametrically, described stator teeth (32) upwards has two stator side (35) that mutually deviate from week, and the minimum range (Wt) between two stator side (35) of described stator teeth (32) is greater than the distance (Wr) between two axial edge that are parallel to each other of described side surface (25).
10. switched reluctance machines according to claim 1, is characterized in that, described rotor installation portion (23) is trapezoidal on cross section perpendicular to axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420297225.3U CN203872024U (en) | 2014-06-05 | 2014-06-05 | Switched reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420297225.3U CN203872024U (en) | 2014-06-05 | 2014-06-05 | Switched reluctance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203872024U true CN203872024U (en) | 2014-10-08 |
Family
ID=51652945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420297225.3U Withdrawn - After Issue CN203872024U (en) | 2014-06-05 | 2014-06-05 | Switched reluctance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203872024U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245078A (en) * | 2014-06-05 | 2016-01-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Switching reluctance motor |
| CN105529888A (en) * | 2014-10-27 | 2016-04-27 | 珠海格力节能环保制冷技术研究中心有限公司 | Switched reluctance motor and winding arrangement method therefor |
| CN109302034A (en) * | 2018-10-31 | 2019-02-01 | 山东理工大学 | Hybrid Vehicle motor generator |
-
2014
- 2014-06-05 CN CN201420297225.3U patent/CN203872024U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245078A (en) * | 2014-06-05 | 2016-01-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Switching reluctance motor |
| CN105245078B (en) * | 2014-06-05 | 2018-02-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Switched reluctance machines |
| CN105529888A (en) * | 2014-10-27 | 2016-04-27 | 珠海格力节能环保制冷技术研究中心有限公司 | Switched reluctance motor and winding arrangement method therefor |
| CN105529888B (en) * | 2014-10-27 | 2018-12-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Switched reluctance machines and its winding method for arranging |
| CN109302034A (en) * | 2018-10-31 | 2019-02-01 | 山东理工大学 | Hybrid Vehicle motor generator |
| CN109302034B (en) * | 2018-10-31 | 2020-11-03 | 山东理工大学 | Motor generator for hybrid electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141008 Effective date of abandoning: 20180213 |