CN101719710A - Doubly-salient brushless DC generator with few exciting windings - Google Patents
Doubly-salient brushless DC generator with few exciting windings Download PDFInfo
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- CN101719710A CN101719710A CN200910263109A CN200910263109A CN101719710A CN 101719710 A CN101719710 A CN 101719710A CN 200910263109 A CN200910263109 A CN 200910263109A CN 200910263109 A CN200910263109 A CN 200910263109A CN 101719710 A CN101719710 A CN 101719710A
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- 238000004804 winding Methods 0.000 title claims abstract description 111
- 230000005284 excitation Effects 0.000 claims abstract description 42
- 230000005291 magnetic effect Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000010949 copper Substances 0.000 description 7
- 241000209094 Oryza Species 0.000 description 5
- 235000007164 Oryza sativa Nutrition 0.000 description 5
- 235000009566 rice Nutrition 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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Abstract
The invention discloses a doubly-salient brushless DC generator with few exciting windings, belonging to a doubly-salient brushless DC generator and comprising a stator and a rotor which are arranged in the same rotary shaft, wherein the stator is provided with 6n salient teeth evenly and is embedded and wound with an exciting winding at every 3n salient teeth sockets, the salient tooth of each stator is respectively sheathed with a centralized armature winding, and the armature windings of the salient teeth arranged in the same positions in a magnetic field are connected with each other in series to form a phase winding; and the rotor is evenly provided with 4n rotor poles, wherein n is a positive integer and is more than or equal to 2. The invention has the advantages of firm structure, reliable running, low manufacture cost, small excitation power and high power density, and can reduce excitation loss effectively.
Description
Technical field
Invention relates to a kind of doubly-salient brushless DC generator with few exciting windings, belongs to the technical field of doubly-salient brushless DC generator.
Background technology
Doubly salient permanent magnet motor is a kind of novel brushless electric machine that the nineties in last century, American scholar proposed, with the magnetic potential source of high-performance permanent magnet as motor, continuous development along with this New-type electric machine, the magnetic potential source changes, electric excitation biconvex electrode electric machine occurs, claimed doubly-salient brushless DC generator (Chinese invention patent: ZL99114250.0) again.
There is not winding on the rotor of double salient-pole electric machine, brushless, adopting punching silicon-steel to be overrided to form gets final product, the stator armature winding is centralized winding, the end is short, can the moulding coiling well embed in the stator slot again, and is easy for installation, so motor has simple in structure, reliable outstanding advantage, is suitable for high-speed cruising.In addition, double salient-pole electric machine structure and switched reluctance machines belong to variable reluctance motor, but generating need not position transducer during work and the active power converter participate in, control more easy.Thereby, double salient-pole electric machine is the another brand-new motor that electrician's subject occurs after switched reluctance machines in recent years, caused people's very big concern, dynamical system and power-supply system in fields such as Aero-Space, naval vessel, green energy resources have wide practical use.
Doubly-salient brushless DC generator adopts excitation winding to replace the excitation magnetic source of permanent magnet as motor, can realize the magnetic field control of motor by regulating exciting current easily.During as generator operation, can realize pressure regulation and short trouble demagnetization; When moving, not only can work, also can work, enlarge the speed adjustable range of motor at Heng Gongshuaiqu at Heng Zhuanjuqu as motor.Yet also there is the problem of loss in doubly-salient brushless DC generator because of excitation winding, and is more outstanding when motor pole number increases, and reduced electric efficiency, is difficult to realize high power density, thereby limited its application in a lot of occasions.
Summary of the invention
The present invention is intended on the basis of doubly-salient brushless DC generator basic principle and design feature, propose a kind of sound construction, reliable, low cost of manufacture, can effectively reduce excitation loss, the doubly-salient brushless DC generator with few exciting windings that exciting power is little, power density is high.
The present invention adopts following technical scheme for achieving the above object:
Doubly-salient brushless DC generator with few exciting windings of the present invention, constitute by stator and rotor with the rotating shaft setting, it is characterized in that uniform 6n salient pole tooth on the stator, embedded around excitation winding on the stator every 3n salient pole teeth groove, be respectively installed with concentrated armature winding on the salient pole tooth of each stator in addition, the armature winding series connection that is on the salient pole tooth of same position in the magnetic field constitutes a phase winding; A uniform 4n rotor pole on the rotor, wherein n is a positive integer, n 〉=2.
Described doubly-salient brushless DC generator with few exciting windings, it is characterized in that: when described doubly-salient brushless DC generator with few exciting windings moves as brushless DC generator, output dc voltage after common anode rectification circuit of armature winding output process three-phase semiwave common cathode rectification circuit or phase half-wave or the full bridge rectifier rectification.
Described doubly-salient brushless DC generator with few exciting windings is characterized in that: when described doubly-salient brushless DC generator with few exciting windings moved as brushless DC motor, armature winding was powered by three-phase inverter on the stator salient poles tooth.
Doubly-salient brushless DC generator with few exciting windings of the present invention has following beneficial feature:
1. the biconvex electrode structure form that has few excitation winding, no any winding and permanent magnet on the rotor have been inherited firm in structure, the reliable advantage of traditional double salient pole machine;
2. excitation winding has reduced (n-1) k cover than traditional doubly-salient brushless DC generator, and the excitation winding effective length has reduced about 2 (n-1) N
fLk rice, excitation winding copper consumption reduce 2 (n-1) N
fLks ρ
Cu, the power density and the efficient of motor are improved.
3. armature winding can adopt three kinds of different rectification circuit topologys flexibly, and three-phase semiwave common cathode rectification circuit, three-phase semiwave be anode rectification circuit and full bridge rectifier altogether;
When 4. armature winding adopted three-phase semiwave common cathode rectification circuit, armature reacting field had and increases magnetic action especially, and load is big more, and it is obvious more to increase the magnetic effect, can effectively reduce exciting power, reduces excitation loss;
5. after excitation loss reduced, the heating in winding amount obviously reduced, and complete machine temperature reduces relatively, makes the motor power output be able to further raising.Power density and efficient have further been improved.
Description of drawings
Fig. 1 is embodiment three-phase 12/8 an electrode structure doubly-salient brushless DC generator with few exciting windings cutaway view.
Fig. 2 is embodiment three-phase 18/12 an electrode structure doubly-salient brushless DC generator with few exciting windings cutaway view.
Fig. 3 is doubly-salient brushless DC generator with few exciting windings generator operation three-phase semiwave anode rectification circuit theory diagrams altogether.
Fig. 4 is a doubly-salient brushless DC generator with few exciting windings generator operation three-phase semiwave common cathode rectification circuit schematic diagram.
Fig. 5 is a doubly-salient brushless DC generator with few exciting windings generator operation three-phase bridge rectification circuit schematic diagram.
Fig. 6 is a doubly-salient brushless DC generator with few exciting windings electric operation inverter main circuit schematic diagram.
Above-mentioned number in the figure name list:
| Label | Title | Label | Title |
| ??1 | Stator | ??2 | Rotor |
| ??3 | Armature winding | ??4 | Excitation winding |
| ??5 | Rotating shaft | ??A、X | A phase armature winding terminals |
| ??B、Y | B phase armature winding terminals | ??C、Z | C phase armature winding terminals |
| ??D i | Rectifier diode | ??Q i | The inverter circuit switching tube |
| ??v | Rotating speed |
Embodiment
Be elaborated below in conjunction with the technical scheme of accompanying drawing to invention:
Doubly-salient brushless DC generator with few exciting windings rotor of the present invention is salient-pole structure, and the rotor number of poles satisfies certain matching relationship.The rotor matching relationship of three-phase doubly-salient brushless DC generator with few exciting windings is 6n k/4n k, and the basic structure pattern is the 6n/4n structure, and wherein n, k are positive integer, n 〉=2.The stator of motor is evenly distributed with 6n inside stator poles on circumference, on the stator every the embedded excitation winding that is wound with of the groove of 3n the utmost point, be respectively installed with concentrated armature winding on the tooth of each stator poles in addition, the armature winding of extremely the going up series connection that is in same position in the magnetic field constitutes a phase winding; 4nk equally distributed outside rotor pole arranged on the rotor, do not have winding on the rotor pole, it is simple and reliable for structure to have kept switched reluctance machines, advantages of cheap price.
Doubly-salient brushless DC generator with few exciting windings of the present invention is when n=2, motor basic structure is 12/8 utmost point, stator every 6 utmost point embeddings around excitation winding, lack a cover excitation winding than the basic structure of traditional doubly-salient brushless DC generator, because tip lengths changes little, so the excitation winding effective length has reduced about 2N
fL rice, N
fBe the excitation winding number of turn, l is the motor effective length; When n=3, motor basic structure is 18/12 utmost point, and stator around excitation winding, lacks two cover excitation winding than the basic structure of traditional doubly-salient brushless DC generator every 9 utmost point embeddings, and the excitation winding effective length has reduced about 4N
fL rice; Hence one can see that, and the excitation winding of doubly-salient brushless DC generator with few exciting windings has reduced (n-1) k cover than traditional doubly-salient brushless DC generator, and the excitation winding effective length has reduced about 2 (n-1) N
fLk rice, excitation winding copper consumption reduce 2 (n-1) N
fLks ρ
Cu, ρ
CuBe copper density, s is the excitation winding sectional area of wire, is satisfying under the situation that generating requires and motor is exerted oneself, excitation loss obviously reduces, decrease is multiplied when motor pole number increases, and because of reducing with the copper total amount, has further improved the power density and the efficient of motor.
When doubly-salient brushless DC generator with few exciting windings of the present invention was used as brushless DC generator, the armature winding on the stator was through behind the diode rectifier circuit, and the output ripple direct voltage is by transferring smooth direct current to behind the output filter.Armature winding has three kinds of different rectifier systems, and a kind of is three-phase semiwave common cathode rectifier system, and a kind of for three-phase semiwave is total to the anode rectification mode, another kind is the full-bridge rectification mode.When adopting three-phase semiwave common cathode rectifier system, electromotive force is higher to be conducted, this moment, this phase winding magnetic linkage reduced, the respective rotor tooth skids off the stator tooth stage, this generating state armature reacting field rises and increases magnetic action especially, and the big more then armature supply of load is big more, and it is obvious more to increase the magnetic effect, so required excitation magnetic potential is little, voltage regulation is little; Be total to the anode rectification circuit for three-phase semiwave, electromotive force is low to be conducted, and this moment, this phase winding magnetic linkage increased, and the respective rotor tooth slips into the stator tooth stage, and this state armature supply plays demagnetizing effect, so the generator external characteristic is softer, voltage regulation is big; Full bridge rectifier armature winding positive-negative half-cycle is all generated electricity, so the motor output voltage is higher, but voltage regulation is between aforementioned two kinds of rectifier structures.As seen, for doubly-salient brushless DC generator with few exciting windings of the present invention, armature winding adopts three-phase semiwave common cathode rectifier system, has further reduced required exciting power because of increasing magnetic effect, has reduced excitation loss.
When doubly-salient brushless DC generator with few exciting windings of the present invention was used as brushless DC motor, armature winding was by inverter power supply.
When doubly-salient brushless DC generator with few exciting windings of the present invention is three phase electric machine, basic structure is the 6n/4n electrode structure, be stator poles 6n, rotor number of poles 4n, stator every the groove of 3n the utmost point embedded around excitation winding and traditional doubly-salient brushless DC generator is embedded around excitation winding every the groove of 3 utmost points, therefore doubly-salient brushless DC generator with few exciting windings of the present invention has reduced the n-1 cover than the excitation winding of traditional doubly-salient brushless DC generator, and the excitation winding effective length has reduced about 2 (n-1) N
fL rice, as an embodiment, for ease of explanation, accompanying drawing 1 has provided the generalized section of basic structure three-phase 12/8 few excitation winding doubly-salient brushless DC generator, stator 1 has 12 inside salient pole teeth, rotor 2 has 8 outside salient pole teeth, stator poles is wide, and to equal rotor pole wide, constant substantially to guarantee rotor interpolar air-gap permeance sum, it is 0 ° of electrical degree that rotor overlaps location definition, be set with on stator 1 each tooth and concentrate armature winding 3, armature winding series connection on two relative teeth constitutes a phase, forms A-X, B-Y, C-Z three phase windings, stator 1 is every 6 embedded excitation winding 4 that are wound with of utmost point groove, used a cover excitation winding less, excitation winding feeds direct current motor magnetic potential source is provided.Accompanying drawing 2 has provided the generalized section of basic structure three-phase 12/8 few excitation winding doubly-salient brushless DC generator, stator 1 has 18 inside salient pole teeth, rotor 2 has 12 outside salient pole teeth, stator poles is wide, and to equal rotor pole wide, three phase winding constructive methods are extremely identical with basic structure 12/8, stator 1 has been used two cover excitation winding less every 9 embedded excitation winding 4 that are wound with of utmost point groove.
When doubly-salient brushless DC generator with few exciting windings of the present invention moved as brushless DC generator, the armature winding on the stator and the connected mode of outside rectification circuit had 3 kinds, as Fig. 3, Fig. 4 and shown in Figure 5.Fig. 3 adopts three-phase semiwave common cathode rectification circuit mode, the output of threephase armature winding A-X, B-Y, C-Z connects through three common cathodes on the stator rectifier diode D7, D8, D9 halfwave rectifier for generator operation.
Fig. 4 adopts three-phase semiwave anode rectification circuit mode altogether for generator operation, and the output of threephase armature winding A-X, B-Y, C-Z is total to rectifier diode D10, D11, the D12 halfwave rectifier that anode connects through three on the external stator.
Fig. 5 adopts the three phase full bridge rectifier system for generator operation, the full bridge rectifier rectification that the output of threephase armature winding A-X, B-Y, C-Z is formed through power diode D1～D6 on the external stator.
When doubly-salient brushless DC generator with few exciting windings of the present invention was worked as brushless DC motor, the input power supply was powered to armature winding through three-phase inverter respectively.As shown in Figure 6, the converter main circuit for stator outside threephase armature winding A-X, B-Y, C-Z power supply is made of power switch pipe Q1～Q6.
Claims (3)
1. doubly-salient brushless DC generator with few exciting windings, the stator (1) and the rotor (2) that are provided with by same rotating shaft (5) constitute, it is characterized in that upward uniform 6n salient pole tooth of stator (1), stator (1) is gone up embedded around excitation winding (4) every 3n salient pole teeth groove, be respectively installed with concentrated armature winding (3) on the salient pole tooth of each stator (1) in addition, the armature winding series connection that is on the salient pole tooth of same position in the magnetic field constitutes a phase winding; Rotor (2) is gone up a uniform 4n rotor pole, and wherein n is a positive integer, n 〉=2.
2. doubly-salient brushless DC generator with few exciting windings according to claim 1, it is characterized in that: when described doubly-salient brushless DC generator with few exciting windings moves as brushless DC generator, output dc voltage after common anode rectification circuit of armature winding output process three-phase semiwave common cathode rectification circuit or phase half-wave or the full bridge rectifier rectification.
3. doubly-salient brushless DC generator with few exciting windings according to claim 1, it is characterized in that: when described doubly-salient brushless DC generator with few exciting windings moved as brushless DC motor, armature winding was powered by three-phase inverter on stator (1) the salient pole tooth.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910263109A CN101719710A (en) | 2009-12-16 | 2009-12-16 | Doubly-salient brushless DC generator with few exciting windings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910263109A CN101719710A (en) | 2009-12-16 | 2009-12-16 | Doubly-salient brushless DC generator with few exciting windings |
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| CN101719710A true CN101719710A (en) | 2010-06-02 |
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| CN200910263109A Pending CN101719710A (en) | 2009-12-16 | 2009-12-16 | Doubly-salient brushless DC generator with few exciting windings |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891577A (en) * | 2012-10-19 | 2013-01-23 | 东风汽车有限公司 | Switched reluctance motor |
| CN103095086A (en) * | 2011-11-04 | 2013-05-08 | 江苏航天动力机电有限公司 | Electro-magnetic doubly-salient high-speed motor |
| CN113381494A (en) * | 2021-06-17 | 2021-09-10 | 威海西立电子有限公司 | Self-generating system for travelling crane |
| CN114553076A (en) * | 2022-02-07 | 2022-05-27 | 苏州达思灵新能源科技有限公司 | Micro-torque fluctuation doubly salient direct-current excitation generator |
-
2009
- 2009-12-16 CN CN200910263109A patent/CN101719710A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 韦海荣: "电励磁式双凸极电机调速系统研究", 《中国优秀硕博士学位论文全文数据库（硕士）工程科技II辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095086A (en) * | 2011-11-04 | 2013-05-08 | 江苏航天动力机电有限公司 | Electro-magnetic doubly-salient high-speed motor |
| CN102891577A (en) * | 2012-10-19 | 2013-01-23 | 东风汽车有限公司 | Switched reluctance motor |
| CN113381494A (en) * | 2021-06-17 | 2021-09-10 | 威海西立电子有限公司 | Self-generating system for travelling crane |
| CN114553076A (en) * | 2022-02-07 | 2022-05-27 | 苏州达思灵新能源科技有限公司 | Micro-torque fluctuation doubly salient direct-current excitation generator |
| CN114553076B (en) * | 2022-02-07 | 2023-11-10 | 苏州达思灵新能源科技有限公司 | Micro-torque fluctuation doubly salient direct current excitation generator |
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Inventor after: Meng Xiaoli Inventor after: Liu Jianhong Inventor after: Yan Yangguang Inventor after: Chen Zhihui Inventor after: Zhou Nan Inventor before: Meng Xiaoli Inventor before: Yan Yangguang Inventor before: Liu Jianhong Inventor before: Chen Zhihui Inventor before: Zhou Nan |
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Application publication date: 20100602 |