CN204013152U - Adjustable 12/14 bearing-free switch reluctance motor of a kind of air gap - Google Patents
Adjustable 12/14 bearing-free switch reluctance motor of a kind of air gap Download PDFInfo
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- CN204013152U CN204013152U CN201420445091.5U CN201420445091U CN204013152U CN 204013152 U CN204013152 U CN 204013152U CN 201420445091 U CN201420445091 U CN 201420445091U CN 204013152 U CN204013152 U CN 204013152U
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Abstract
The utility model discloses adjustable 12/14 bearing-free switch reluctance motor of a kind of air gap, comprise rotor core and stator core, described rotor core is connected with stator core by axle (8), described rotor core comprises rotor yoke (6), rotor magnetic pole tooth (7), wherein, rotor yoke (6) is positioned at bottom, the upper end of rotor yoke (6) is inlaid with equally distributed 14 rotor magnetic pole teeth (7), described stator core comprises stator yoke (1) topmost, be embedded in stator yoke (1) 4 stator auxiliary magnetic pole teeth (2) and 8 stator torque magnetic pole tooths (3) below, described stator auxiliary magnetic pole tooth (2) comprises the permanent magnet (10) that regulates magnetic pole tooth (11) and be close to stator auxiliary magnetic pole tooth (2) inner side, between described stator core and rotor core, leave gap, form air gap (9).It has axially can suspend, the feature of air gap capable of regulating, high power density.
Description
Technical field
The utility model relates to a kind of bearing-free switch reluctance motor, and the adjustable bearing-free switch reluctance motor of a kind of air gap is particularly particularly suitable for low speed, large torque, application scenario that axial space is little.
Background technology
Traditional switch reluctance machine rotor is without permanent magnet without coil, and simple in structure, sturdy and durable, reliability is high, and controllability is good, is therefore greatly developed, and product is widely used in drive system of electric automobile, household electrical appliance and universal industrial etc.But along with day by day highlighting of energy crisis and environmental problem, the torque pulsation of traditional switch reluctance motor is large, Conversion of Energy density is low, noise is large etc., and problem also causes people's extensive concern.Produce subsequently the switched reluctance machines of disc type axial magnetic field not only in conjunction with regular tap reluctance motor advantage simple in structure, and axial length is short, volume is little, lightweight, power density is high, perfect heat-dissipating, structure diversification, can meet different performance requirements, there is broad range of application, be therefore more and more subject to people's attention.But, between axial magnetic field switched reluctance machines stator and rotor, there is axial magnetic pull, plain shaft fails to make full use of the axial magnetic pull between stator and rotor to magnetic field switching reluctance motor, thereby produces noise and heat.And it is that its rotor magnetic circuit does not rely on and rotor radius that disk type switch magnetoresistance electrical machinery is better than a very important feature of regular tap reluctance motor, only relevant with stator and rotor transverse tooth thickness degree, this can allow to increase rotor magnetic pole number, thereby further reduces vibration and noise.Modal axial disk switched reluctance machines is 6/4 structure axial magnetic field disk type switch magnetoresistance electrical machinery of three-phase, and this structural electromotor rotor number of poles is few, fails to give full play to the advantage of disc type electric machine, and the long magnetic structure of this motor employing, and power density is low.As everyone knows, air gap is the very important parameter of switched reluctance machines, and it directly affects the performance of motor.And the selection of regular tap reluctance motor air gap is subject to processing the serious restriction of technique, selected air gap parameter must be in technique allowed band.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model is the shortcoming that overcomes existing axial magnetic field disk type switch magnetoresistance electrical machinery, provides a kind of air gap adjustable and do not rely on 12/14 bearing-free switch reluctance motor that processing technology requires.
For achieving the above object, the utility model has adopted following technical scheme:
Adjustable 12/14 bearing-free switch reluctance motor of a kind of air gap, comprise rotor core and stator core, described rotor core is connected with stator core by axle 8, described rotor core comprises rotor yoke 6, rotor magnetic pole tooth 7, wherein, rotor yoke 6 is positioned at bottom, the upper end of rotor yoke 6 is inlaid with equally distributed 14 rotor magnetic pole teeth 7, described stator core comprises stator yoke 1 topmost, be embedded in stator yoke 14 stator auxiliary magnetic pole teeth 2 and 8 stator torque magnetic pole tooths 3 below, described stator auxiliary magnetic pole tooth 2 comprises the permanent magnet 10 that regulates magnetic pole tooth 11 and be close to stator auxiliary magnetic pole tooth 2 inner sides, on stator auxiliary magnetic pole tooth 2, be wound with auxiliary adjustment coil 4, on stator torque magnetic pole tooth 3, coiling is by torque winding coil 5, between described stator core and rotor core, leave gap, form air gap 9.
As the further optimization of such scheme, described permanent magnet 10 magnetizing directions are axial.
Further, permanent magnet 10 polarity of adjacent two stator auxiliary magnetic pole teeth are contrary.
Further, described air gap 9 width are less than 1mm.
Further, described auxiliary adjustment coil 2 and the integrated setting of torque winding coil 5.
Further, in order to form the material of described axle 8, comprise electrical pure iron, 1J50 or 40Cr and make.
Further, the mode that described 4 stator auxiliary magnetic pole teeth 2 and 8 stator torque magnetic pole tooths 3 coordinate with two stator torque magnetic pole tooths according to a stator auxiliary magnetic pole tooth is evenly distributed on below stator yoke 1.
Compared with prior art, the beneficial effects of the utility model main manifestations is:
1. the utility model takes full advantage of the axial magnetic pull between axial magnetic field switched reluctance machines stator and rotor, has realized the axial suspension of bearing-free switch reluctance motor, and realize motor gas-gap adjustable, do not rely on processing technology requirement.
2. the utility model replaces coil sections to produce magnetic pull with permanent magnet, has reduced coil current and the number of turn, thereby reduces motor copper loss.
3. the utility model adopts short magnetic circuit structural, improves power of motor density.Motor described in the utility model makes full use of axial magnetic pull between axial magnetic field switched reluctance machines stator and rotor, and noise decrease has shortened flux closure loop, improves power of motor density.
Accompanying drawing explanation
Fig. 1 is the 3-D solid structure schematic diagram of the utility model one embodiment.
Fig. 2 is the plan structure schematic diagram of stator core in the utility model one embodiment.
Fig. 3 is the utility model one embodiment rotor iron core plan structure schematic diagram.
Fig. 4 is the forward sight structural representation in auxiliary adjustment coil flux path in the utility model one embodiment.
Fig. 5 is torque winding coil magnetic flux path schematic diagram in the utility model one embodiment.
Wherein 1 is stator yoke, the 2nd, and stator auxiliary magnetic pole tooth, the 3rd, stator torque magnetic pole tooth, the 4th, auxiliary adjustment coil, the 5th, torque winding coil, the 6th, rotor yoke, the 7th, rotor magnetic pole tooth, the 8th, axle, the 9th, air gap, the 10th, permanent magnet, the 11st, regulate magnetic pole tooth.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the utility model is done to more specific detail.
Embodiment 1
As shown in Fig. 1～5, adjustable 12/14 bearing-free switch reluctance motor of a kind of air gap, comprise rotor core and stator core, described rotor core is connected with stator core by axle 8, described rotor core comprises rotor yoke 6, rotor magnetic pole tooth 7, wherein, rotor yoke 6 is positioned at bottom, the upper end of rotor yoke 6 is inlaid with equally distributed 14 rotor magnetic pole teeth 7, described stator core comprises stator yoke 1 topmost, be embedded in stator yoke 14 stator auxiliary magnetic pole teeth 2 and 8 stator torque magnetic pole tooths 3 below, described stator auxiliary magnetic pole tooth 2 comprises the permanent magnet 10 that regulates magnetic pole tooth 11 and be close to stator auxiliary magnetic pole tooth 2 inner sides, on stator auxiliary magnetic pole tooth 2, be wound with auxiliary adjustment coil 4, on stator torque magnetic pole tooth 3, coiling is by torque winding coil 5, between described stator core and rotor core, leave gap, form air gap 9.Described permanent magnet 10 magnetizing directions are axial.Permanent magnet 10 polarity of adjacent two stator auxiliary magnetic pole teeth are contrary.Described air gap 9 width are less than 1mm.Described auxiliary adjustment coil 2 and the integrated setting of torque winding coil 5.In order to form the material of described axle 8, comprise electrical pure iron, 1J50 or 40Cr and make.The mode that described 4 stator auxiliary magnetic pole teeth 2 and 8 stator torque magnetic pole tooths 3 coordinate with two stator torque magnetic pole tooths according to a stator auxiliary magnetic pole tooth is evenly distributed on below stator yoke 1.
During work, by the winding coil series connection on torque magnetic pole tooth A1, A2, A3, A4; Winding coil series connection on torque magnetic pole tooth B1, B2, B3, B4.Winding coil series connection on auxiliary magnetic pole tooth P1, P2, P3, P4.
Adjustable 12/14 bearing-free switch reluctance motor of air gap is comprised of stator core, auxiliary adjustment coil 4, torque winding coil 5, rotor core, axle 8.Wherein stator core edge+x ,-x ,+y and-4 stator auxiliary magnetic pole teeth 2 that y places form 4 magnetic poles of the adjustable 12/14 bearing-free switch reluctance motor α of air gap, β two directions, between them, by stator yoke 1, connect.On each stator auxiliary magnetic pole tooth 2, be wound with auxiliary adjustment coil 4, for regulating the size of air gap.Stator auxiliary magnetic pole tooth 2 is by permanent magnet 10 and regulate magnetic pole tooth 11 to assemble, for reducing the number of turn and the electric current of auxiliary adjustment coil 4, and then the copper loss of minimizing motor.8 stator torque magnetic pole tooths 3 of stator core form 8 magnetic poles of the adjustable 12/14 bearing-free switch reluctance motor A of air gap, B two-phase, between them, by stator yoke 1, connect, on each stator torque magnetic pole tooth 3, be wound with torque winding coil 5, for generation of rotating torques.The upside of stator core is rotor core, leaves gap and form air-gap between stator core and rotor core.In addition, auxiliary magnetic pole tooth 2 polar arcs of stator core equal a rotor polar moment, for generation of stable suspending power.5 series connection of torque winding coil energising simultaneously on two adjacent stator torque magnetic pole tooths 2, for shortening magnetic flux path.
The principle of the present embodiment is: auxiliary adjustment coil 4 forms magnetic circuits by stator suspension magnetic pole tooth, air gap, rotor magnetic pole tooth 7, rotor yoke 6, axle 8 and provides axial magnetic pull for adjustable 12/14 bearing-free switch reluctance motor of air gap, and the size of the size adjustment axial magnetic pull by regulating winding electric current, and then regulate the size of air gap.The magnetic flux path of stator auxiliary magnetic pole tooth P2, P3 of take is example, magnetic pull of the present utility model with magnetic magnetic flux path 1, be: magnetic flux is from the N utmost point of the permanent magnet of auxiliary magnetic pole tooth P3, through air gap, rotor magnetic pole tooth 7, rotor yoke 6, axle 8, the air gap of the other end, the adjusting magnetic pole tooth of stator auxiliary magnetic pole tooth P2, stator yoke 1, finally get back to again the S utmost point of auxiliary magnetic pole tooth P3 permanent magnet, as shown in solid black lines in Fig. 4.The permanent magnet flux path 2 of magnetic pull of the present utility model is: magnetic flux is from the N utmost point of the permanent magnet of auxiliary magnetic pole P2, through air gap, rotor magnetic pole tooth 7, rotor yoke 6, axle 8, the air gap of the other end, the adjusting magnetic pole tooth of stator auxiliary magnetic pole tooth P3, stator yoke 1, finally get back to again the S utmost point of auxiliary magnetic pole tooth P2 permanent magnet, as shown in blue solid lines in Fig. 4.When air gap is too large, the electric current of the logical forward of auxiliary adjustment coil, the magnetic field that electric current produces is contrary with permanent magnet 10 generation magnetic fields, and the total magnetic flux of magnetic circuit strengthens, and magnetic pull increases, and air gap reduces thereupon.When air gap too hour, the logical reverse current of auxiliary adjustment coil 4, the magnetic field that electric current produces is contrary with permanent magnet 10 generation magnetic fields, the total magnetic flux of magnetic circuit weakens, air gap increases thereupon.The logical forward current of auxiliary adjustment coil 4 of take is example, the electromagnetism magnetic flux path of magnetic pull is: from the winding coil of magnetic pole P3, (magnetic pole that coil produces is equivalent to the N utmost point) of permanent magnet to magnetic flux, through the air gap of air gap, rotor magnetic pole tooth 7, rotor yoke 6, the other end, get back to magnetic pole P2 winding coil (magnetic pole that coil produces is equivalent to the S utmost point of permanent magnet) and finally get back to again magnetic pole P3 winding coil, as shown in red dotted line in Fig. 4.The magnetic flux that produces magnetic pull in the utility model is mainly provided by permanent magnet 10, this make the number of turn of auxiliary adjustment coil 4 and electric current all very little.The copper loss of motor is directly proportional to coil current, that is: P
cu=I
2r, so the minimizing of auxiliary adjustment coil current, contribute to the minimizing of motor copper loss.Torque generating principle is: the winding coil on two adjacent stator torque magnetic pole tooths 3 is series relationship, and during work, energising simultaneously, forms loop, realizes short magnetic circuit structural.When machine operation according to the position of the rotor break-make of electric current in controlling torque winding coil 5 in time.In rotor rotation process, when rotor magnetic pole tooth 7 and stator torque magnetic pole tooth 3 start to have when overlapping, inductance starts to increase, and produces positive torque.The path of torque winding coil 5 magnetic flux that produces is comprised of the air gap between stator core, stator torque iron core and rotor core, rotor core, the winding coil conducting of B1, B2 two magnetic poles of take is example, its magnetic circuit is: magnetic flux is from stator torque magnetic pole B1, air gap through air gap, rotor magnetic pole tooth 7, rotor yoke 6, rotor magnetic pole tooth 7, the other end, magnetic pole B2 flows through, through the stator yoke 1 of about sixth, get back to magnetic pole B1 again, as shown in Figure 5.
Fig. 2 is the vertical view of the adjustable 12/14 bearing-free switch reluctance motor stator core of technical solutions of the utility model air gap, and stator core contains 2,8 stator torque magnetic pole tooths 3 of 4 stator auxiliary magnetic pole teeth.
Fig. 3 is the vertical view of the adjustable 12/14 bearing-free switch reluctance motor rotor core of technical solutions of the utility model air gap, and rotor core contains 14 tooth utmost points.
Fig. 4 is the magnetic flux path front view that the magnetic pull of adjustable 12/14 bearing-free switch reluctance motor of technical solutions of the utility model air gap produces, permanent magnet regulates magnetic pole tooth 11, stator yoke 1 to form permanent magnet circuit by air gap, rotor magnetic pole tooth 7, rotor yoke 6, axle 8, stator, produces main magnetic pull.Auxiliary adjustment coil 4 forms electromagnetic circuit by air gap, rotor magnetic pole tooth 7, rotor yoke 6, regulates the size of air gap.The magnetic flux path of auxiliary magnetic pole tooth P2, P3 of take in figure provides the magnetic flux path that magnetic pull produces as example.
Fig. 5 is the torque utmost point magnetic flux path figure of technical solutions of the utility model 12/14 bearing-free switch reluctance motor, the winding coil series connection energising simultaneously of the torque magnetic pole tooth A1 of stator core, A2, A3, A4; The winding coil series connection energising simultaneously of torque magnetic pole tooth B1, B2, B3, B4.In figure, take B1 and B2 conducting is example, has provided the magnetic flux path figure of motor.
In above-described embodiment, axle used 5 adopts the good material of magnetic property to make, as magnetic materials such as electrical pure iron, various carbon steel, cast iron, cast steel, steel alloy, 40Cr, 1J50 and 1J79 etc.Auxiliary adjustment coil 2, torque winding coil 3 can form with paint-dipping drying after the good electromagnetic wire coiling of conduction.
In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of the utility model requirement.
Claims (7)
1. adjustable 12/14 bearing-free switch reluctance motor of air gap, comprise rotor core and stator core, described rotor core is connected with stator core by axle (8), it is characterized in that: described rotor core comprises rotor yoke (6), rotor magnetic pole tooth (7), wherein, rotor yoke (6) is positioned at bottom, and the upper end of rotor yoke (6) is inlaid with equally distributed 14 rotor magnetic pole teeth (7)
Described stator core comprises stator yoke (1) topmost, is embedded in stator yoke (1) 4 stator auxiliary magnetic pole teeth (2) and 8 stator torque magnetic pole tooths (3) below, described stator auxiliary magnetic pole tooth (2) comprises the permanent magnet (10) that regulates magnetic pole tooth (11) and be close to stator auxiliary magnetic pole tooth (2) inner side, on stator auxiliary magnetic pole tooth (2), be wound with auxiliary adjustment coil (4), the upper coiling of stator torque magnetic pole tooth (3) is by torque winding coil (5)
Between described stator core and rotor core, leave gap, form air gap (9).
2. adjustable 12/14 bearing-free switch reluctance motor of air gap according to claim 1, is characterized in that: described permanent magnet (10) magnetizing direction is for axial.
3. adjustable 12/14 bearing-free switch reluctance motor of air gap according to claim 1, is characterized in that: permanent magnet (10) polarity of adjacent two stator auxiliary magnetic pole teeth is contrary.
4. adjustable 12/14 bearing-free switch reluctance motor of air gap according to claim 1, is characterized in that: described air gap (9) width is less than 1mm.
5. adjustable 12/14 bearing-free switch reluctance motor of air gap according to claim 1, is characterized in that: described auxiliary adjustment coil (2) and the integrated setting of torque winding coil (5).
6. adjustable 12/14 bearing-free switch reluctance motor of air gap according to claim 1, is characterized in that: in order to form the material of described axle (8), comprise electrical pure iron, 1J50 or 40Cr and make.
7. adjustable 12/14 bearing-free switch reluctance motor of air gap according to claim 1, it is characterized in that, the mode that described 4 stator auxiliary magnetic pole teeth (2) and 8 stator torque magnetic pole tooths (3) coordinate with two stator torque magnetic pole tooths according to a stator auxiliary magnetic pole tooth is evenly distributed on stator yoke (1) below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420445091.5U CN204013152U (en) | 2014-08-08 | 2014-08-08 | Adjustable 12/14 bearing-free switch reluctance motor of a kind of air gap |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420445091.5U CN204013152U (en) | 2014-08-08 | 2014-08-08 | Adjustable 12/14 bearing-free switch reluctance motor of a kind of air gap |
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| CN204013152U true CN204013152U (en) | 2014-12-10 |
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| CN201420445091.5U Expired - Fee Related CN204013152U (en) | 2014-08-08 | 2014-08-08 | Adjustable 12/14 bearing-free switch reluctance motor of a kind of air gap |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337467A (en) * | 2014-08-08 | 2016-02-17 | 苏州麦立特机电科技有限公司 | 12/14 bearing-less switched reluctance motor with adjustable air gap |
-
2014
- 2014-08-08 CN CN201420445091.5U patent/CN204013152U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337467A (en) * | 2014-08-08 | 2016-02-17 | 苏州麦立特机电科技有限公司 | 12/14 bearing-less switched reluctance motor with adjustable air gap |
| CN105337467B (en) * | 2014-08-08 | 2018-02-16 | 大工科技（上海）有限公司 | A kind of adjustable 12/14 bearing-free switch reluctance motor of air gap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150808 |
|
| EXPY | Termination of patent right or utility model |