CN203522358U - A Switched Reluctance Motor with Commutation Winding - Google Patents
A Switched Reluctance Motor with Commutation Winding Download PDFInfo
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- CN203522358U CN203522358U CN201320567357.9U CN201320567357U CN203522358U CN 203522358 U CN203522358 U CN 203522358U CN 201320567357 U CN201320567357 U CN 201320567357U CN 203522358 U CN203522358 U CN 203522358U
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- 238000004804 winding Methods 0.000 title claims abstract description 171
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 description 46
- 210000000515 tooth Anatomy 0.000 description 17
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a switch reluctance motor with a phase change winding. The motor is of a doubly salient structure, a stator and a rotor are respectively provided with salient teeth, and the number of the salient teeth of the stator is not equal to that of the rotor. The stator teeth is wound with centralized winding coils to form a multiphase symmetrical winding structure, and the coils have a double layer coil side structure, that is two coil sides belonged to different coils are disposed in each stator groove. In addition, the stator teeth of the motor are also wound with an integral pitch winding with an interval, a single-phase auxiliary winding is formed, and the number of single-phase integral pitch winding coils is equal to half of a value obtained by dividing the number of the stator teeth by the number of phases. The self-inductance of the motor centralized winding is periodically changed along with changes of rotor positions, and the mutual-inductance between the centralized winding and the integral pitch winding is also periodically changed along with the changes of the rotor positions. By introducing the auxiliary winding, current phase change and energy cycle of the switch reluctance motor can be improved.
Description
Technical field
The utility model relates to a kind of switched reluctance machines with commutation winding.The technical field that belongs to motor manufacture and control,
Background technology
Development along with power electronic technology, microelectric technique and control theory, it is more and more extensive that the application of switched reluctance machines is just becoming, especially the in the situation that of rare earth permanent-magnetic material price concuss, without the switched reluctance machines that uses permanent magnet, become and get most of the attention.Traditional switch reluctance motor is double-salient-pole structure, rotor is pressed and to be folded into by ordinary silicon steel disc, on rotor both without permanent magnet also without winding, on stator, only have centralized winding, its self-induction can change and change with rotor-position, but mutual inductance does not change with rotor-position.Switched reluctance machines is according to " magnetic resistance is minimum " principle work, and the reluctance torque that relies on self-induction to change generation drives rotor.Switched reluctance machines possess manufacture simple, cost is low, firm in structure, fault freedom is good, be easy to the advantages such as heat radiation, suitable high-speed cruising, in the fields such as industrial drives, electrical speed regulation, electric automobile, household electrical appliance, textile machine, has demonstrated powerful competitiveness and wide application prospect.
On traditional switch reluctance motor stator, several salient pole teeth are uniformly distributed, and the profile of tooth facewidth is identical, and centralized winding coil is also uniformly distributed, and on each stator tooth, cover has the centralized winding coil that the number of turn is identical and wire diameter is identical.For switched reluctance machines, in order to obtain good performance, need phase current waveform in strict conformity with given, can set up rapidly and disappear.Yet, in actual applications, due to the existence of winding inductance, and the DC bus-bar voltage of controller can not be infinitely great, cause the phase current of motor cannot realize sudden change to obtain optimum current waveform, cause thus the not performance completely of power conversion ability of switched reluctance machines.
In addition, it is output mechanical power that switched reluctance machines only can be inputted a part power conversion, also has a lot of dump energies to be fed back to again mains side, has caused power supply capacity waste and extra copper loss.
Therefore, the utility model is from address the above problem, on existing ordinary tap reluctance motor architecture basics, by changing the winding construction of motor, a kind of novel switched reluctance motor with commutation winding has been proposed, by the operational mode of thorough change switched reluctance machines, to improve commutation difficult problem and the excess energy circulatory problems of electric current.
Summary of the invention
Technical problem: technical problem to be solved in the utility model is: propose a kind of switched reluctance machines with commutation winding, to improve commutation and the excess energy feedback problem of motor, and this structure is applicable to the switched reluctance machines of any number of phases, any rotor teeth groove cooperation.
Technical scheme: for solving the problems of the technologies described above, the technical solution adopted in the utility model is:
Switched reluctance machines with commutation winding of the present utility model, comprise stator (1) and rotor (4), described stator (1) is provided with even number stator tooth, and on stator tooth, be wound with concentrated winding (2) and whole apart from winding (3), each stator tooth is nested by a concentrated winding coil, concentrate winding coil number to equal stator tooth number, whole apart from winding coil interval on stator tooth, the number of the stator tooth that two circle end bay is crossed equals the number of phases of motor; Often concentrate mutually winding or wholely apart from winding, comprise several coils, each coil that belongs to a phase winding is sequentially connected or in parallel or string series-parallel connection form a phase winding, and wherein, concentrated winding forms heterogeneous symmetric winding, wholely apart from winding, forms single-phase auxiliary winding; On rotor (4), also there are several salient pole teeth, there is no winding or permanent magnet.
Described is whole apart from winding (3), and note number of motor phases is m, and the stator number of teeth is N
stime, this whole coil number apart from winding is N
s/ m/2.
Described electric machine rotor iron core is formed by silicon steel plate stacking, and complete machine does not need permanent magnet.
Described stator (1) and rotor (4) are salient-pole structure, and rotor (4) is internal rotor, or external rotor.
Described motor is electric rotating machine, or linear electric motors or straight line rotation double freedom structure.
Described motor is for radially, axially or transverse magnetic field structure.
The described switched reluctance machines with commutation winding is on the basis of regular tap reluctance motor, to increase single-phase wholely apart from winding, is called auxiliary winding, for improving electric current commutation and the energy circulation problem of motor.
The described switched reluctance machines with commutation winding can be made electric operation, also can make generator operation.
The described switched reluctance machines structure with commutation winding can be applied to the switched reluctance machines of any number of phases, any rotor teeth groove cooperation.Threephase stator 6 grooves/rotor 4 pole switching reluctance electric machine structures of take are example, stator core is provided with 6 symmetrical salient pole teeth, on stator tooth, be wound with 6 symmetrical centralized winding coils, by being counterclockwise called successively first, concentrate winding coil to the six to concentrate winding coil, wherein: first concentrates winding coil and the 4th to concentrate winding coil radially relative, they are sequentially connected or compose in parallel A and concentrate mutually winding; The 3rd concentrates winding coil and the 6th to concentrate winding coil radially relative, they is sequentially connected or compose in parallel B and concentrate mutually winding; Second concentrates winding coil and the 5th to concentrate winding coil radially relative, they is sequentially connected or compose in parallel C and concentrate mutually winding; In addition, on stator tooth, be also wound with 1 whole apart from winding coil, an one circle limit is placed on first and concentrates in winding coil and the 6th stator slot of concentrating between winding coil, another circle limit is placed on the 3rd and concentrates in winding coil and the 4th stator slot of concentrating between winding coil, and finally this coil forms separately single-phase auxiliary winding; Rotor core is provided with 4 symmetrical salient pole teeth.In motor of the present utility model, concentrate the self-induction of winding to change with the variation of rotor-position, the whole self-induction apart from winding is invariable, but the whole mutual inductance meeting apart from winding and concentrated winding changes with the variation of rotor-position.
Beneficial effect: compared with prior art, the utlity model has following beneficial effect:
1. phase current commutation is quicker.Motor of the present utility model is when electric current commutation, that need to turn-off one concentrates winding to rely on itself and the whole effect apart from winding mutual inductance mutually, energy can be transferred to whole on winding, electric current is turn-offed more quickly, thereby the pass angle of rupture that guarantees motor can, more near the position of rotor tooth alignment, be brought into play the ability of exerting oneself of motor largelyr.
2. less energy back.Motor of the present utility model is when one concentrates winding to turn-off mutually, the electromagnetic energy of its storage can some be kept at whole on winding, and do not need to feed back to mains side, reduced copper loss and idle, and, when next concentrates winding to open mutually, wholely apart from winding, can directly the electromagnetic energy of preservation be transferred in this phase winding.
3. suitable high-speed cruising.Motor winding of the present utility model is all arranged on stator, both there is no winding on rotor, also there is no permanent magnet, and rotor moment of inertia is little, suitable high-speed cruising.
4. simple in structure firm.In motor of the present utility model, stator and rotor form by silicon steel sheet compacting.Processing is simple, and structure is firm, does not need to use permanent magnet, and material and cost of manufacture are lower.
5. larger output torque.Because the electric current commutation of motor is rapider, closing the angle of rupture can be more near rotor tooth aligned position, therefore can obtain larger output torque.
Accompanying drawing explanation
Fig. 1 is the horizontal sectional structure schematic diagram of the switched reluctance machines with commutation winding of threephase stator 6 grooves/rotor 4 electrode structures of the utility model embodiment.
Fig. 2 is the inductance oscillogram of the switched reluctance machines with commutation winding of threephase stator 6 grooves/rotor 4 electrode structures of the utility model embodiment.
In figure, have: stator 1, concentrated winding the 2, first concentrated winding coil 2A1, second concentrate winding coil 2C1, the 3rd to concentrate winding coil 2B1, the 4th to concentrate winding coil 2A2, the 5th concentrated winding coil 2C2 and and the 6th concentrated winding coil 2B2, whole apart from winding 3, rotor 4.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in detail.
A kind of switched reluctance machines with commutation winding of the present utility model, comprises stator 1, concentrates winding 2, whole apart from winding 3 and rotor 4.Stator 1 is provided with even number stator tooth, between adjacent stators tooth, forms stator slot, and each stator tooth has another stator tooth corresponding with it along the radially relative position of stator.On each stator tooth, be all wound with and concentrate winding coil 2, it be two layer winding structure, concentrates the number of winding coil to equal the number of stator tooth, wholely apart from winding 3 compartment of terrains, is nested on stator tooth, remembers that the motor stator number of teeth is N
s, the number of phases is m, the whole number apart from winding coil equals N
s/ m/2, whole two circle end bays apart from winding coil are crossed a complete stator poles distance.
Further, described concentrated winding 2, several coils that belong to a phase form a phase winding by series connection or parallel connection or the also series-parallel connection of going here and there, and finally concentrate winding 2 to become winding construction in heterogeneous symmetric set.Its self-induction is periodically-varied with the variation of rotor-position, mutual inductance very I to ignore.
Further, described is whole apart from winding 3, and all full-pitched coils are formed to single-phase winding by series connection or in parallel or string series-parallel connection, final whole apart from winding 3, become single-phase whole apart from winding construction.Its self-induction is invariable, and the whole mutual inductance meeting apart from winding 3 and concentrated winding 2 with the variation of rotor-position periodically-varied.This is whole also needs to be connected to power supply by power switch apart from winding, by power switch, in time switches the whole off state of opening apart from winding, wholely apart from winding, also needs unipolarity power supply, can adopt the power circuit structure identical with concentrated winding.
Further, described stator 1 and rotor 4 are salient-pole structure, and rotor 3 can be internal rotor, or external rotor.When rotor 4 is internal rotor, stator 1 is positioned at the outside of rotor 3.When rotor 4 is external rotor, stator 1 is positioned at the inner side of rotor 4.On rotor 4 without winding and permanent magnet.
Switched reluctance machines with commutation winding of the present utility model is on traditional switch reluctance motor architecture basics, increased a set of single-phase whole apart from winding to improve the performance of motor.
Key of the present utility model is not for to change under the condition of electric machine rotor core construction and size, only a set of single-phase whole apart from winding by increasing, change the operational mode of motor, make current of electric commutation rapider, energy feedback reduces, finally reach raising motor torque and exert oneself, improve the object of electric efficiency.
The utility model can be applied to the switched reluctance machines of any number of phases, any rotor teeth groove number of poles combination.Threephase stator 6 grooves/rotor 4 pole switching reluctance motors of take below illustrate the technical solution of the utility model and operation principle thereof as embodiment.
As shown in Figure 1, threephase stator 6 grooves/rotor 4 pole switching reluctance motors of the present embodiment, stator 1 is provided with 6 stator tooths symmetrically, on stator tooth, be nested with 6 centralized winding coils, by being counterclockwise called successively: first concentrate winding coil 2A1, second concentrate winding coil 2C1, the 3rd concentrate winding coil 2B1, the 4th concentrate winding coil 2A2, the 5th concentrate winding coil 2C2 and and the 6th concentrate winding coil 2B2, in addition, on stator, be also nested with one whole apart from winding coil 3, on rotor 4, have 4 salient pole teeth symmetrically.
Concentrate in winding 2, first concentrates winding coil 2A1 and the 4th to concentrate winding coil 2A2 radially relative, they is sequentially connected or compose in parallel A and concentrate mutually winding; The 3rd concentrates winding coil 2B1 and the 6th to concentrate winding coil 2B2 radially relative, they is sequentially connected or compose in parallel B and concentrate mutually winding; Second concentrates winding coil 2C1 and the 5th to concentrate winding coil 2C2 radially relative, they is sequentially connected or compose in parallel C and concentrate mutually winding.
Wholely apart from 3 of windings, a full-pitched coil, consist of, an one circle limit is placed on first and concentrates winding coil 2A1 and the 6th to concentrate between winding coil 2B2, and another circle limit is placed on the 3rd and concentrates winding coil 2B1 and the 4th to concentrate between winding coil 2A2.It is emphasized that the whole position apart from winding 3 is versatile and flexible, it can also be placed in other stator slot, only need to guarantee the distance of whole three stator tooths in two circle intervals, limit apart from winding coil, i.e. one, interval stator poles distance.
The waveform that this inductance with the switched reluctance machines of commutation winding changes with rotor-position as shown in Figure 2, wherein, L
a, L
band L
cbe respectively the self-induction of winding in the three-phase set of motor, L
ffor auxiliary commutation around self-induction, M
af, M
bfand M
cfwinding and single-phase whole mutual inductance between winding in the three-phase set of motor respectively.For the switched reluctance machines with commutation winding of this embodiment, the self-induction L of auxiliary commutation winding
finvariable, and in three-phase set, the period of change of the self-induction of winding, concentrated winding and whole mutual inductance between winding is 90 ° of mechanical angles, number of teeth of motor rotor is 4, corresponding motor number of pole-pairs is 4, and 90 ° of mechanical angles are corresponding to 360 ° of electric angles.
Switched reluctance machines with commutation winding of the present utility model can adopt traditional switch reluctance motor to drive the asymmetry half-bridge circuit of use, and auxiliary commutation winding can, separately as a phase, be received in main circuit.For the threephase stator 6 grooves/rotor 4 pole switching reluctance motors with commutation winding of the present embodiment, need four phase asymmetry half-bridge circuits to drive.
The foregoing is only better embodiment of the present utility model; protection range of the present utility model is not limited with above-mentioned execution mode; in every case the equivalence that those of ordinary skills do according to the utility model institute disclosure is modified or is changed, and all should include in the protection range of recording in claims.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320567357.9U CN203522358U (en) | 2013-09-12 | 2013-09-12 | A Switched Reluctance Motor with Commutation Winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320567357.9U CN203522358U (en) | 2013-09-12 | 2013-09-12 | A Switched Reluctance Motor with Commutation Winding |
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| Publication Number | Publication Date |
|---|---|
| CN203522358U true CN203522358U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320567357.9U Expired - Fee Related CN203522358U (en) | 2013-09-12 | 2013-09-12 | A Switched Reluctance Motor with Commutation Winding |
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|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475116A (en) * | 2013-09-12 | 2013-12-25 | 东南大学 | Switched reluctance motor with phase change windings |
| CN107643473A (en) * | 2017-09-30 | 2018-01-30 | 广东威灵电机制造有限公司 | The stator winding symmetry detection methods and detection means of motor |
-
2013
- 2013-09-12 CN CN201320567357.9U patent/CN203522358U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475116A (en) * | 2013-09-12 | 2013-12-25 | 东南大学 | Switched reluctance motor with phase change windings |
| CN107643473A (en) * | 2017-09-30 | 2018-01-30 | 广东威灵电机制造有限公司 | The stator winding symmetry detection methods and detection means of motor |
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|---|---|---|---|
| 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: 20140402 Termination date: 20150912 |
|
| EXPY | Termination of patent right or utility model |