CN203301273U - Non bearing type half gear winding switch reluctance motor - Google Patents
Non bearing type half gear winding switch reluctance motor Download PDFInfo
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- CN203301273U CN203301273U CN2013202556978U CN201320255697U CN203301273U CN 203301273 U CN203301273 U CN 203301273U CN 2013202556978 U CN2013202556978 U CN 2013202556978U CN 201320255697 U CN201320255697 U CN 201320255697U CN 203301273 U CN203301273 U CN 203301273U
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Abstract
The utility model discloses a non bearing switch reluctance motor of a half gear winding. An even number of stator gears are arranged on a stator. Each stator gear is sheathed with a centralized short pitch winding coil. A torque winding and a levitation force winding are comprised and are placed at interval. The torque winding is used for outputting mechanical torque. The levitation force winding is used for controlling the displacement in the horizontal X axis direction and the vertical Y axis direction of a motor rotor. According to the motor provided by the utility model, the advantage of simple and reliable structure of a switch reluctance motor is kept; each stator gear is only provided with a coil; the slot full rate is high; the reliability is good; through ingenious change of the winding way, non bearing operation of the switch reluctance motor is realized; the switch reluctance motor can give full play to the advantages suitable for high speed and ultra high speed work; and the motor has high theoretical and practical values.
Description
Technical field
The utility model relates to the technical field that motor is made, and relates in particular to a kind of bearing-free switch reluctance motor of novel half tooth winding.
Background technology
, along with the quick rise of rare earth permanent-magnetic material price is unstable with supply, do not need the switched reluctance motor system of permanent magnet to obtain paying close attention to more and more widely.Switched reluctance machines is the double-salient-pole structure, and rotor is made by common silicon steel plate stacking, on rotor without permanent magnet also without winding, only have centralized winding on stator, it is according to " magnetic resistance minimum " principle work.Switched reluctance machines make and maintenance cost low, simple in structure firm, robustness good, starting current is little, torque is large, speed-regulating range width, dynamic response is fast, and good fault-tolerance and reliability are arranged, in addition, due on its rotor without permanent magnet and winding, be very suitable for high-speed cruising.The switched reluctance machines range of application is very extensive, at aspects such as industrial governing system, household electrical appliance, Aero-Space, electric automobiles, has shown powerful competitiveness.
On the other hand, at a high speed and the fields such as ultrahigh speed drives, sealing transmission and Aero-Space, the shaftless acknowledgement of consignment row technology of motor there is active demand.Due to many limitations of mechanical bearing, common electric machine can't meet the requirement that runs up for a long time; The control appliance of air supporting and liquid bearing is huger, and cost is high, and reliability is low; The advantages such as magnetic suspension bearing has the machinery-free wearing and tearing, need not lubricated and system sealing, and adaptive capacity to environment is strong, but magnetic bearing electric system overall structure is more complicated, axial occupation space, power density are not high, and critical whirling speed and power capacity are difficult to increase substantially.1985, fast and the strong device for power switching of load capacity and the appearance of digital signal processor, make the alternating current machine vector control technology that proposes more than 20 year be able to practical application, solved so the numerically controlled difficult problem of bearing-free motor.The Bick that of Zurich, SUI federal Institute of Technology on the basis of these scientific and technological progresses, just produces bearing-free motor first in the later stage eighties 20th century.By to being placed on the reasonable control of the winding on stator, bearing-free motor can be simple as the motor of mechanical bearings, and electric control system is very not complicated.
Bearing-free motor integrates rotary actuation and magnetic bearing function, it utilizes the similitude on magnetic bearing and electric machine structure, with the suspending windings in magnetic bearing and motor winding together lap wound in stator core, make the magnetic field of its generation break the motor primary winding by the size and Orientation of controlling the suspending windings electric current and produce the balance in magnetic field in air gap, thereby produce all controlled suspending powers of a size and Orientation on rotor, with the rotation that realizes rotor with certainly suspend.
Than the induction machine and the permagnetic synchronous motor that adopt without the bearing technology, bearing-free switch reluctance motor is simple in structure, make maintenance cost low, control conveniently, need not to use permanent magnet, robustness is good, reliability is high, rotor also is suitable for the ultrahigh speed operation.
the bearing-free switch reluctance motor that proposes at present is all mainly coiling double winding on each stator tooth of motor, bear respectively the function of torque winding and suspending power winding, like this, the coil number of motor is the twice of the stator number of teeth, adopt the bearing-free switch reluctance motor of this method, complex structure, copper factor is low, and torque winding and suspending power winding are nested on same stator tooth, magnetic circuit is almost completely identical, fault-tolerance and reliability are low, the magnetic circuit coupling is very serious, limited the actual carrying load ability of bearing-free switch reluctance motor, become a Main Bottleneck of its engineering application.
Therefore, need a kind of new technical scheme to address the above problem.
The utility model content
The purpose of this utility model is the deficiency that exists for prior art, get around the basic characteristics of closing reluctance motor in conjunction with bearing-free motor and novel half tooth, provide that a kind of copper factor is higher, efficiency is more excellent, fault-tolerance and higher without bearing-type half tooth, the getting around and close the reluctance motor structure of reliability, and this structure is fit to any number of phases, the switched reluctance machines that coordinates of rotor teeth groove number arbitrarily.
For realizing above-mentioned utility model purpose, the utility model gets around the pass reluctance motor without bearing-type half tooth can adopt following technical scheme:
A kind ofly without bearing-type half tooth, get around the pass reluctance motor, comprise stator and rotor, described stator is provided with the even number stator tooth, and is equipped with concentrated winding on stator tooth, and concentrated winding coil comprises for the torque winding of output mechanical energy and is used for the suspending power winding of floatation electric motor rotor; In adjacent two stator tooths, be wound with the torque winding on a stator tooth, be wound with the suspending power winding on another stator tooth, on rotor both without permanent magnet, also without winding.
Further, the suspending power winding has two groups at least, controls the axial rotor displacement of horizontal X for one group, and another group is controlled the axial rotor displacement of vertical Y
Further, this motor can adopt inner rotor core, also can adopt outer-rotor structure.
Further, this motor both can be made electric operation, can make generator operation again.
Further, the profile of tooth of the profile of tooth of the torque tooth on motor stator and the facewidth and suspending power tooth and the facewidth is identical or not identical
Compared with prior art, the utlity model has following beneficial effect:
1, of the present utility modelly without bearing-type half tooth, get around and close reluctance motor and realized without bearing, designing of motor in the situation that do not change regular tap reluctance motor iron-core lamination.Motor stator and rotor core do not need to change, and by common silicon steel punched chip, are laminated and are formed, and just the winding winding has had larger change.The motor stator tooth is divided into torque tooth and suspending power tooth, and on the torque tooth, cover is useful on the torque winding of output torque, and on the suspending power tooth, cover is useful on the suspending power tooth of suspension rotor, and the number of turn of double winding and wire diameter are all not identical.
2, simple in structure firm, low cost of manufacture, do not need to use permanent magnet, and robustness is good.In addition, torque winding and suspending power winding are centralized coil, and the coiling difficulty is low, and end is shorter, has effectively reduced copper loss, has reduced axial length, has improved power density, and are beneficial to the heat radiation of motor.
3, on rotor without winding and permanent magnet, moment of inertia is little, and the frictional dissipation of having avoided mechanical bearing to bring without bearing arrangement, is fit to very much move with ultrahigh speed at a high speed.
4, torque winding and suspending power winding are not nested on same stator tooth, are coupled less, can independently control.
Suspending power winding of the present utility model is nested on different stator tooths from the torque winding, rely on the suspending power winding to switch on afterwards and the interaction of air-gap field, produce respectively the controlled horizontal direction radial suspension force of size and Orientation and vertical direction radial suspension force, thereby realize the stable magnetic suspension of rotor; Rely on after the energising of torque winding the interaction with air-gap field, produce electromagnetic torque, the driving rotor.
Description of drawings
Fig. 1 is that the utility model embodiment 1 adopts the horizontal sectional structure schematic diagram of half tooth of threephase stator 12 grooves/rotor 8 electrode structures around the formula bearing-free switch reluctance motor.
To be structure shown in the utility model embodiment 1 change and the schematic diagram of force in radial at the air-gap field of certain rotor-position Fig. 2 a, and showed the state diagram when X1 phase suspending power winding is switched on by the first direction.
To be structure shown in the utility model embodiment 1 change and the schematic diagram of force in radial at the air-gap field of certain rotor-position Fig. 2 b, and showed the state diagram when X1 phase suspending power winding is switched on by the second direction.
To be structure shown in the utility model embodiment 1 change and the schematic diagram of force in radial at the air-gap field of certain rotor-position Fig. 2 c, and showed the state diagram when X1 phase suspending power winding is switched on by the third direction.
To be structure shown in the utility model embodiment 1 change and the schematic diagram of force in radial at the air-gap field of certain rotor-position Fig. 2 d, and showed the state diagram when X1 phase suspending power winding is switched on by the 4th kind of direction.
Fig. 3 is that the utility model embodiment 2 adopts the horizontal sectional structure schematic diagram of half tooth of four phase stator 8 grooves/rotor 6 electrode structures around the formula bearing-free switch reluctance motor.
To be structure shown in the utility model embodiment 2 change and the schematic diagram of force in radial at the air-gap field of certain rotor-position Fig. 4 a, and showed the state diagram when X1 phase suspending power winding is switched on by the first direction.
To be structure shown in the utility model embodiment 2 change and the schematic diagram of force in radial at the air-gap field of certain rotor-position Fig. 4 b, and showed the state diagram when X1 phase suspending power winding is switched on by the second direction.
To be structure shown in the utility model embodiment 2 change and the schematic diagram of force in radial at the air-gap field of certain rotor-position Fig. 4 c, and showed the state diagram when X1 phase suspending power winding is switched on by the third direction.
To be structure shown in the utility model embodiment 2 change and the schematic diagram of force in radial at the air-gap field of certain rotor-position Fig. 4 d, and showed the state diagram when X1 phase suspending power winding is switched on by the 4th kind of direction.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these embodiment only is used for explanation the utility model and is not used in restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present utility model.
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in detail.
Of the present utility modelly a kind ofly without bearing-type half tooth, get around the pass reluctance motor, comprise stator 1 and rotor 4.Stator 1 is provided with the even number stator tooth.Form stator slot between the adjacent stators tooth.Each stator tooth radially has a stator tooth relative with it along stator.Stator tooth is provided with concentrated winding coil, and this concentrated winding coil comprises for the torque winding 2 of output mechanical energy and is used for the suspending power winding 3 of suspension rotor.Concentrated winding is placed in the stator slot of stator 1, and stator tooth is wound around.In adjacent two stator tooths, be wound with the coil of torque winding 2 on stator tooth, be wound with the coil of suspending power winding 3 on another stator tooth.That is to say, torque winding 2 and suspending power winding 3 are circumferentially alternately arranged along stator 1.
Further, described stator 1 and rotor 4 are salient-pole structure, and rotor 4 can be set to internal rotor, also can be set to external rotor.When rotor 4 was internal rotor, stator 1 was positioned at the outside of rotor 4.When rotor 4 was external rotor, stator 1 was positioned at the inboard of rotor 4.On rotor 4 without winding and permanent magnet.
Of the present utility modelly without bearing half tooth, around the working mechanism of formula switched reluctance machines, be: follow the magnetic resistance minimum principle, be that magnetic flux is always closed along the path of magnetic resistance minimum, when stator tooth and rotor tooth center line do not overlap, be that magnetic conductance is when maximum, magnetic field will produce tangential magnetic pull, form reluctance torque, make rotor 4 forward the position of magnetic conductance maximum to; In addition, when rotor, during at diverse location,, according to different rotor displacements, give suitable suspending power winding energising, can produce radially magnetic pull and eliminate rotor eccentricity, rotor stability is suspended.
Key of the present utility model is for being, only by changing winding construction, can make rotor stablize magnetic suspension and export torque, the stator tooth that is wound with the torque winding on motor stator can be identical with the profile of tooth and the facewidth that are wound with the stator tooth of suspending power winding, also can.
The utility model can be applied to any number of phases, any rotor teeth groove array switched reluctance machines structure of closing.Following example illustrates the technical solution of the utility model and operation principle thereof for two example two.
Embodiment 1: as an example of threephase stator 12 grooves/rotor 8 pole switching reluctance electric machine structures example, describe.
as shown in Figure 1, the present embodiment adopts threephase stator 12 grooves/rotor 8 utmost point electric machine structures, 12 salient pole teeth are arranged on stator, all overlap a concentrated winding coil is arranged on each stator tooth, cover has 12 coils altogether, by counterclockwise being called successively: the first torque winding coil 2A1, the first suspending power winding coil 3X11, the second torque winding coil 2B1, the second suspending power winding coil 3Y1, the 3rd torque winding coil 2C1, the 3rd suspending power winding coil 3X21, the 4th torque winding coil 2A2, the 4th suspending power winding coil 3X22, the 5th torque winding coil 2B2, the 5th suspending power winding coil 3Y2, the 6th torque winding coil 2C2 and the 6th suspending power winding coil 3X12.
At motor rotor position shown in Figure 2, the energising of A phase torque winding, at this moment, stator 2A1 crown and air gap place, 2A2 crown place all produce direction magnetic linkage left.As shown in Fig. 2 (a), when direction shown in X1 phase suspending power winding is pressed is switched on, close being reinforced of magnetic at 2A1 crown air gap place, and the magnetic at 2A2 crown air gap place is close substantially constant, therefore 2A1 and 2A2 crown place air gap flux density be balance no longer, rotor will be subject to direction radially magnetic pull to the right; As shown in Fig. 2 (b), when direction shown in X2 phase suspending power winding is pressed is switched on, close being reinforced of magnetic at 2A2 crown air gap place, and the magnetic at 2A1 crown air gap place is close substantially constant, therefore 2A2 and 2A1 crown place air gap flux density be balance no longer, rotor will be subject to direction radially magnetic pull left; As shown in Fig. 2 (c), when direction shown in Y1 phase suspending power winding is pressed is switched on, close being reinforced of magnetic at 3Y1 crown air gap place, and the magnetic at 3Y2 crown air gap place is close substantially constant, therefore 3Y1 and 3Y2 crown place air gap flux density be balance no longer, rotor will be subject to the radially magnetic pull that direction makes progress; As shown in Fig. 2 (d), when direction shown in Y2 phase suspending power winding is pressed is switched on, close being reinforced of magnetic at 3Y2 crown air gap place, and the magnetic at 3Y1 crown air gap place is close substantially constant, therefore 3Y2 and 3Y1 crown place air gap flux density be balance no longer, rotor will be subject to the downward radially magnetic pull of direction.
There is double winding in this motor, i.e. A, B, C three-phase torque winding and X1, X2, Y1, Y2 four phase suspending power windings.This system can drive with seven phase power circuits.
It is emphasized that in this embodiment, the torque tooth of motor stator and suspending power tooth are through optimizing, and their profile of tooth and the facewidth are not identical.And the torque winding is different from wire diameter and the number of turn of suspending power winding.
Embodiment 2: as an example of four phase stator 8 grooves/rotor 6 pole switching reluctance electric machine structures example, describe.
As shown in Figure 3, the present embodiment adopts four phase stator 8 grooves/rotor 6 utmost point electric machine structures, 8 salient pole teeth are arranged on stator, all overlap a concentrated winding coil is arranged on each stator tooth, cover has 8 coils altogether, by counterclockwise being called successively: the first suspending power winding coil 3X11, the first torque winding coil 2A1, the second suspending power winding coil 3Y1, the second torque winding coil 2B1, the 4th suspending power winding coil 3X22, the 4th torque winding coil 2A2, the 5th suspending power winding coil 3Y2,, the 5th torque winding coil 2B2.
At motor rotor position shown in Figure 4, the energising of A phase torque winding.At this moment, stator 2A1 crown and air gap place, 2A2 crown place all produce the direction magnetic linkage of below left.As shown in Fig. 4 (a), when direction shown in X1 phase suspending power winding is pressed is switched on, close being reinforced of magnetic at 3X11 crown air gap place, and the magnetic at 3X22 crown air gap place is close substantially constant, therefore 3X11 and 3X22 crown place air gap flux density be balance no longer, rotor will be subject to direction radially magnetic pull to the right; As shown in Fig. 4 (b), when direction shown in X2 phase suspending power winding is pressed is switched on, close being reinforced of magnetic at 3X22 crown air gap place, and the magnetic at 3X11 crown air gap place is close substantially constant, therefore 3X22 and 3X11 crown place air gap flux density be balance no longer, rotor will be subject to direction radially magnetic pull left; As shown in Fig. 4 (c), when direction shown in Y1 phase suspending power winding is pressed is switched on, close being reinforced of magnetic at 3Y1 crown air gap place, and the magnetic at 3Y2 crown air gap place is close substantially constant, therefore 3Y1 and 3Y2 crown place air gap flux density be balance no longer, rotor will be subject to the radially magnetic pull that direction makes progress; As shown in Fig. 4 (d), when direction shown in Y2 phase suspending power winding is pressed is switched on, close being reinforced of magnetic at 3Y2 crown air gap place, and the magnetic at 3Y1 crown air gap place is close substantially constant, therefore 3Y2 and 3Y1 crown place air gap flux density be balance no longer, rotor will be subject to the downward radially magnetic pull of direction.
There is double winding in this motor, i.e. A, B two-phase torque winding and X1, X2, Y1, Y2 four phase suspending power windings.This system can drive with six phase power circuits.
It is emphasized that in this embodiment, the torque tooth on motor stator keeps profile of tooth identical with the facewidth with the suspending power tooth, but the wire diameter of torque winding and suspending power winding is not identical with the number of turn.
Claims (4)
1. one kind gets around the pass reluctance motor without bearing-type half tooth, comprise stator (1) and rotor (4), it is characterized in that: described stator (1) is provided with the even number stator tooth, and be equipped with concentrated winding on stator tooth, concentrated winding coil comprises for the torque winding (2) of output mechanical energy and is used for the suspending power winding (3) of floatation electric motor rotor; In adjacent two stator tooths, be wound with torque winding (2) on a stator tooth, be wound with suspending power winding (3) on another stator tooth, on rotor both without permanent magnet, also without winding.
2. according to claim 1ly without bearing-type half tooth, get around the pass reluctance motor, it is characterized in that: the suspending power winding has two groups at least, controls the axial rotor displacement of horizontal X for one group, and another group is controlled the axial rotor displacement of vertical Y.
3. according to claim 1 and 2ly without bearing-type half tooth, get around the pass reluctance motor, it is characterized in that: this motor is made electric operation or generator operation.
4. according to claim 1ly without bearing-type half tooth, get around the pass reluctance motor, it is characterized in that: the profile of tooth of the stator tooth that is wound with the torque winding on described stator (1) and the facewidth and be wound with the suspending power winding stator tooth profile of tooth and the facewidth is identical or not identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202556978U CN203301273U (en) | 2013-05-10 | 2013-05-10 | Non bearing type half gear winding switch reluctance motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202556978U CN203301273U (en) | 2013-05-10 | 2013-05-10 | Non bearing type half gear winding switch reluctance motor |
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| CN203301273U true CN203301273U (en) | 2013-11-20 |
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| CN2013202556978U Expired - Fee Related CN203301273U (en) | 2013-05-10 | 2013-05-10 | Non bearing type half gear winding switch reluctance motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296810A (en) * | 2013-05-10 | 2013-09-11 | 东南大学 | Bearingless half-tooth-winding switched reluctance motor |
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2013
- 2013-05-10 CN CN2013202556978U patent/CN203301273U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296810A (en) * | 2013-05-10 | 2013-09-11 | 东南大学 | Bearingless half-tooth-winding switched reluctance motor |
| CN103296810B (en) * | 2013-05-10 | 2015-11-18 | 东南大学 | A kind of bearing-free formula half tooth is around switched reluctance machines |
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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: 20131120 Termination date: 20160510 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |