CN203289293U - Power generator - Google Patents
Power generator Download PDFInfo
- Publication number
- CN203289293U CN203289293U CN2011900008268U CN201190000826U CN203289293U CN 203289293 U CN203289293 U CN 203289293U CN 2011900008268 U CN2011900008268 U CN 2011900008268U CN 201190000826 U CN201190000826 U CN 201190000826U CN 203289293 U CN203289293 U CN 203289293U
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- China
- Prior art keywords
- generator
- generator according
- capacitor
- rotor
- stator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
- H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
Abstract
A power generator comprises a substantially cylindrical stator, a substantially columnar rotor which is supported to be able to rotate around a center axis on the inner side of the stator, and a plurality of capacitors connected between phases of multiphasic output lines led out from the stator, or between the multiphasic output lines and a neutral point. The stator comprises a stator core which is formed by stacked steel plates and provided with a plurality of teeth protruding toward the center axis, and a plurality of coils which are formed on the plurality of teeth in a concentrated winding manner. The rotor comprises a substantially columnar rotor main body formed by stacked steel plates, and a plurality of rotor magnets inserted into a plurality of holes formed parallel to the center axis in the rotor main body.
Description
Technical field
The utility model relates to a kind of generator.Particularly relate to a kind of generator for wind power generation.
Background technology
In the past,, in order to improve generating efficiency, considered to reduce the inductance of generator.In the high output generator of putting down in writing in TOHKEMY 2006-345592 communique, the winding of each layer is divided into the first winding and the second winding, and with so-called distribution winding method, forms three phase windings.Thus, reduced inductance.
And,, in order to suppress the reduction of output voltage, in the alternating current generator of putting down in writing in TOHKEMY 2003-134767 communique, following technology being disclosed: is connected with capacitor between the positive pole of each terminal of polyphase windings and full-wave rectifier or negative pole.Thus, output voltage improves, and the winding number of turns reduces.Consequently, inductance reduces.And, be connected with each terminal by the capacitor with the delta connection state, make into phase current three phase windings of flowing through, thereby further improve generating voltage.
In addition, TOHKEMY 2010-11686 communique discloses coil to concentrate the mode of reeling to be formed at the wind power generation plant of stator.
Patent documentation 1: TOHKEMY 2006-345592
Patent documentation 2: TOHKEMY 2003-134767
Patent documentation 3: TOHKEMY 2010-11686
The utility model content
Utility model problem to be solved
Yet, in generator,, in the situation that attempt to reduce inductance by reducing the number of windings, can not obtain high induced voltage.On the other hand, in the situation that inductance is high, the phase place of voltage and the phase deviation of electric current, thus power output descends.
In view of above-mentioned problem, the enough simple structures of the utility model energy improve the power output from generator.
The related generator of the illustrated one side of the utility model comprises: stator cylindraceous roughly; Columned rotor roughly, its inboard at described stator is supported for and can rotates centered by central axis; And a plurality of capacitors, described a plurality of capacitors are connected between alternate or the described heterogeneous output line and neutral point of the heterogeneous output line of drawing from described stator.Described stator has: stator core, and it is formed and is had towards the outstanding a plurality of teeth of described central axis by stacked steel plate; And a plurality of coils, described a plurality of coils are to concentrate the mode of reeling to be formed at described a plurality of tooth.Described rotor has: columned rotor subject roughly, and it is formed by stacked steel plate; And a plurality of rotor magnets, described a plurality of rotor magnets insert a plurality of holes that are formed at described rotor subject in the mode parallel with described central axis.
Illustrated the second related generator of fermentation of the present invention comprises: stator cylindraceous roughly; Columned rotor roughly, its inboard at described stator is supported for and can rotates centered by central axis; Diode, it is connected to the heterogeneous output line of from described stator, drawing; And capacitor, it is connected with described output line in the mode with described diodes in parallel.Described stator has: stator core, and it is formed by stacked steel plate and has towards the outstanding a plurality of teeth of described central axis; And a plurality of coils, described a plurality of coils are to concentrate the mode of reeling to be formed at described a plurality of tooth.Described rotor has: columned rotor subject roughly, and it is formed by stacked steel plate; And a plurality of rotor magnets, described a plurality of rotor magnets insert a plurality of holes that are formed at described rotor subject in the mode parallel with described central axis.
The effect of utility model
In the illustrated generator of the utility model, can enough simple structures improve power output.
Description of drawings
Fig. 1 is the cutaway view of generator.
Fig. 2 is the vertical view of stator and rotor.
Fig. 3 is winding diagram.
Fig. 4 is other winding diagrams.
Fig. 5 is another other winding diagrams.
Fig. 6 improves the figure of the principle of power output for explanation.
Fig. 7 improves the figure of the principle of power output for explanation.
Fig. 8 improves the figure of the principle of power output for explanation.
Fig. 9 is another other winding diagrams.
Embodiment
In this manual, referred to as " upside ", downside is referred to as " downside " with the upside of the central axial direction of generator.The above-below direction when above-below direction in this specification does not represent to be assembled into physical device.And, will be centered by central axis circumferentially referred to as " circumferentially ", will be centered by central axis radially referred to as " radially ".
Fig. 1 is the figure that the related generator 1 of the illustrated execution mode of the utility model is shown.Generator 1 is used for for example wind power generation.
Rotating part 3 is so-called rotor.Below, rotating part 3 is called " rotor 3 ".Rotor 3 is for roughly cylindric.Rotor 3 is supported for and can rotates centered by central axis J1 in the inboard of stator 22, and rotor 3 comprises axle 31, rotor subject 32 and rotor magnet 33.Axle 31 is centered by central axis J1 and be configured.Rotor subject 32 is for roughly cylindric.Rotor subject 32 is fixed in axle 31.Rotor subject 32 is by folding laminal magnetic steel flaggy to form.That is to say, the stacked steel plate that rotor subject 32 forms by multiple magnetic steel flaggies are folded forms.Rotor magnet 33 is configured in rotor subject 32.
Fig. 2 is the vertical view of stator 22 and rotor 3.This overlook map omitting the diagram of insulating part 222.Stator core 221 comprises a plurality of teeth 224 and iron core back 225.Here, the radical of tooth 224 is 12.Stator core 221 is by folding multiple magnetic steel flaggies to form.That is to say, stacked steel plate that form forms stator core 221 by multiple magnetic steel plates are stacked.The steel plate that forms stator core 221 is respectively at a circumferential continuous metallic plate.Iron core back 225 in the form of a ring.Tooth 224 is outstanding towards central axis J1 from iron core back 225.That is to say, tooth 224 is outstanding towards rotor 3.Tooth 224 is circumferentially waiting the tooth pitch configuration.By on each tooth 224 across insulating part 221(with reference to Fig. 1) the coiling wire forms coil 223.Coil 223 is to concentrate the mode of reeling to form.Form a coil 223 at a tooth 224.
Fig. 3 is the figure that the wiring of generator 1 is shown.Generator 1 is threephase generator, has U phase, V phase and W phase.Each phase (U phase, V phase, W phase) consists of coil 223 respectively.In Fig. 3, concentrate a plurality of coils 223 that form each phase are shown.Below, the coil of each phase 223 is called " coil group 61 ".Three coil groups 61 are connected with neutral point 62 respectively.Draw respectively the output line 63 of U phase, V phase, W phase from three coil groups 61.Electric current from three output lines 63 is rectified by six diodes 64.The electric current that is rectified is directed to load 9 through lead-out terminal 65.That is to say, rectifier 640 consists of six diodes 64.Rectifier 640 is connected to the heterogeneous output line 63 of from stator 22, drawing.
Specifically, be connected with pair of diodes 64 between each output line 63 and pair of output 65.In Fig. 3, in each diode 64, current direction is from the lead-out terminal 65 of Fig. 3 downside direction towards the lead-out terminal 65 of upside.But rectifier 640 also can be used as the structure of with generator 1, separating and is arranged at electricity generation system.
The alternate capacitor 66 that is connected with at output line 63.In other words, three capacitors 66 connect in the mode of delta connection, and are connected with three output lines 63 respectively., by capacitor 66 is set like this, as described later, can make the phase place of each phase current leading with respect to the phase place of voltage between phases.Consequently, the delay of the current phase that is caused by inductance can be relaxed, thereby power output can be improved.
Fig. 4 is the figure of other examples that the wiring of generator 1 is shown.In Fig. 4, be connected with three capacitors 66 between three output lines 63 and other neutral points 62a.In other words, three capacitors 66 connect in the mode of Y-connection (Y shape connection), and are connected with three output lines 63 respectively.Other structures are the same with Fig. 3, the symbol same to same structure tag.
Fig. 5 is the figure of other examples that the wiring of generator 1 is shown.In Fig. 5, three capacitors 66 are connected in parallel with three coil groups 61 respectively.Thus, be connected with three capacitors 66 between three output lines 63 and neutral point 62.In other words, three capacitors 66 mode with star-star connection centered by neutral point 62 connects, and with three output lines 63, is connected.Other structures are the same with circuit structure shown in Figure 3, the symbol same to same structure tag.
In Fig. 4 and circuit structure shown in Figure 5, also can make the phase place of each phase current leading with respect to the phase place of voltage between phases.Consequently, the delay of the current phase that is caused by inductance can be alleviated, thereby power output can be improved.In addition, in the situation that the withstand voltage capacitor capacitor larger than electric capacity of height easily obtains, preferred three capacitors 66 connect in the mode of delta connection.
Fig. 6, Fig. 7 and Fig. 8 be for explanation in the situation that Fig. 3, improve the figure of the principle of power outputs by capacitor 66.In Fig. 6, Fig. 7 and Fig. 8, transverse axis represents the time, and the longitudinal axis represents electric current and voltage.Fig. 6 illustrates and has supposed the state that does not have the desirable three-phase alternating-current supply of internal resistance and inductance.And, the electric current when Fig. 6 represents not have capacitor 66 and voltage.In Fig. 6, show output current 711, phase current 712, output voltage 721, a voltage between lines 722 and a phase voltage 723.Output current 711 is to flow to the electric current of load 9 from lead-out terminal 65.In Fig. 3, Fig. 4 and Fig. 5, phase current 712 is for flowing to the electric current of position 601 from coil group 61.Output voltage 721 is the voltage of 65 of lead-out terminals.Voltage between lines 722 is the voltage of 602 of position 601 and positions.Phase voltage 723 is the voltage of 62 of position 601 and neutral points.The waveform when phase current of three-phase is 120 degree energising, and at any time, electric current is only flowed through two-phase and is not flowed through an other phase.
Fig. 7 is illustrated in electric current and the voltage in the situation of the internal resistance of having considered coil group 61 and inductance.In Fig. 7, show output current 711, phase current 712, output voltage 721, a voltage between lines 722 and a phase voltage 723.Fig. 7 also shows the situation of the capacitor 66 that does not arrange shown in Fig. 3, Fig. 4 and Fig. 5.In Fig. 7, compare with the situation of Fig. 6, due to the impact of inductance, the phase place of phase current 712 is with respect to the phase delay of voltage between lines 722.Thus, produce invalid power, thereby power output descends.
Fig. 8 is illustrated in electric current in the situation of three capacitors 66 that appended ideal capacitance shown in Figure 3 and the figure of voltage.In Fig. 8, show output current 711, phase current 712, output voltage 721, a voltage between lines 722 and a phase voltage 723.With reference to the datum line 73 in Fig. 7 and Fig. 8, by each capacitor 66 is set, the phase advance of phase current 712, thus phase current 712 is consistent with the phase place of 722 of voltages between lines.The waveform of voltage between lines 722 approaches sinusoidal wave.Thus, suppressed the decline of power output.
Thus, in circuit shown in Figure 3, suppress the delay of the phase current phase place that the impact by inductance causes by capacitor 66, thereby improved the power factor of generator.Consequently, power output improves.At the circuit shown in Fig. 4 and Fig. 5 too, suppressed the delay of the phase current phase place that the impact by inductance causes by capacitor 66.Consequently, power output improves.
Yet, act on load 9 voltage and deduct voltage after the drop-out voltage that is caused by electrical impedance for the direct voltage when zero load.Therefore,, by take the electric capacity of electrical impedance as zero mode regulation capacitor 66, can improve generating efficiency.
In Fig. 4 and circuit shown in Figure 5, take phase inductance as La, the electric capacity of capacitor 66 is F as C, electrical angle frequency, reactance Xs is (2 π FLa-1/(2 π FC) thus).Therefore, if Xs=0, C=(1/((2 π F)
2La)).In addition, in the situation that Fig. 3, the electric capacity of capacitor 66 is needed as line capacitance and Fig. 4 is equivalent.Certainly, the electric capacity of the capacitor 66 of trying to achieve as described above is the electric capacity of the circuit that is modeled, may have some different from the electric capacity of most preferred capacitor in reality.And from the viewpoint of manufacturing cost, the electric capacity of capacitor also can be significantly different from ideal capacitance.
Particularly, in the situation that have the generator of above-mentioned circuit structure, be used for wind power generation, according to the change of wind-force, the rotating speed of generator significantly changes.Therefore, the electric capacity of preferred capacitor 66 is in the situation that make more than 50% below 100% of electric capacity of power output maximum during rated speed.Here, rated speed refers to the rotating speed that is prescribed as the critical whirling speed that can use safely when design.
In the generator 1 of explanation, rotor magnet 33 is configured in rotor subject 32 in the above-described embodiment.And in generator 1, coil 223 is to concentrate the mode of reeling to form.Therefore, can obtain high induced voltage.The situation of this spline structure, different from generator in the past, it is large that inductance becomes.Yet, be provided with the structure of above-mentioned capacitor 66 by use, can realize improving generating efficiency when not reducing inductance.
From the relation between the manufacturing cost of the electric capacity of capacitor 66 and generator 1, the structure that is provided with capacitor 66 is not suitable for large-scale generator.The generator 1 that the above 10kW of the specified 100W of being output as of output when therefore, this structure is applicable to rated speed is following.The external diameter that preferably is applicable to stator core 221 is the following generator 1 of the above 300mm of 50mm.And therefore,, due to simple in structure, be applicable to not the wind power generation take high-caliber control or monitoring as prerequisite.Rated speed is below the above 5000rpm of 100rpm.And, because rotor magnet 33 is configured in rotor subject 32, thus can be easily and prevent reliably coming off of rotor magnet 33, therefore improved the trustworthiness of generator 1.
Above, execution mode of the present utility model is illustrated, but the utility model is not limited to above-mentioned execution mode, also can carry out various distortion.
For example, in the above-described embodiment, the mode that three coil groups 61 also can delta connection connects.The output number of phases of from coil 223, drawing is not defined as 3 phases, also can be 4 mutually more than.In this case, the alternate of heterogeneous output line or and heterogeneous output line and neutral point between also be connected with capacitor 66.And, without particular limitation of the kind of diode 64.Can use such as rectification with diode or Schottky barrier diode etc. as diode.
And each capacitor 66 also can be configured in parallel with each diode 64.Fig. 9 is the winding diagram that the related variation of the utility model is shown.In Fig. 9, each capacitor 66 is connected with output line 63 in the mode with each diode 64 parallel connections.That is to say, a plurality of (being six here) capacitor 66 is respectively with respect to 64 configurations of a plurality of (being six here) diode.Thus, in the situation that use the capacitor 66 of same capacitance, the situation that is connected above-mentioned capacitor 66 with mode with star-star connection is compared, and structure shown in Figure 9 can improve output voltage.But, the voltage the when maximum voltage that is applied to the two ends of each capacitor 66 is the peak value of voltage between lines.Therefore, in structure shown in Figure 9, the situation that is connected each capacitor 66 with the above-mentioned mode with star-star connection is compared, and preferably uses high withstand voltage capacitor.
Structure in above-mentioned execution mode and each variation only otherwise conflictingly can carry out appropriate combination.
Utilizability on industry
The related generator of the utility model not only can be used for wind power generation, also can be used in other various generatings.
Label declaration
1 generator
3 rotors (rotating part)
22 stators
32 rotor subjects
33 rotor magnets
62,62a neutral point
63 output lines
66 capacitors
221 stator cores
223 coils
224 teeth
321 holes
The J1 central axis
Claims (27)
1. a generator, is characterized in that, this generator comprises:
Stator cylindraceous;
Columned rotor, its inboard at described stator is supported for and can rotates centered by central axis; And
A plurality of capacitors, described a plurality of capacitors are connected between alternate or the described heterogeneous output line and neutral point of the heterogeneous output line of drawing from described stator,
Described stator comprises:
Stator core, it is formed by stacked steel plate and has towards the outstanding a plurality of teeth of described central axis; And
A plurality of coils, described a plurality of coils are formed at described a plurality of tooth with concentrated winding method,
Described rotor comprises:
Columned rotor subject, it is formed by stacked steel plate; And
A plurality of rotor magnets, described a plurality of rotor magnets insert a plurality of holes that are formed at described rotor subject in the mode parallel with described central axis.
2. generator according to claim 1, is characterized in that,
The number of phases of described a plurality of coils is three-phase.
3. generator according to claim 1, is characterized in that,
Electric capacity 50% or more 100% below of the electric capacity of each capacitor of described a plurality of capacitors for make the power output maximum when rated speed.
4. generator according to claim 2, is characterized in that,
Electric capacity 50% or more 100% below of the electric capacity of each capacitor of described a plurality of capacitors for make the power output maximum when rated speed.
5. generator according to claim 1, is characterized in that,
The external diameter of described stator core is below the above 300mm of 50mm.
6. generator according to claim 4, is characterized in that,
The external diameter of described stator core is below the above 300mm of 50mm.
7. generator according to claim 1, is characterized in that,
Specified being output as below the above 10kW of 100W.
8. generator according to claim 6, is characterized in that,
Specified being output as below the above 10kW of 100W.
9. generator according to claim 1, is characterized in that,
Described a plurality of capacitor connects in the mode of delta connection.
10. generator according to claim 8, is characterized in that,
Described a plurality of capacitor connects in the mode of delta connection.
11. generator according to claim 1, is characterized in that,
Described a plurality of capacitor connects in the mode of delta connection.
12. the described generator of any one claim according to claim 1 to 11, is characterized in that,
Take the electric capacity of described capacitor as C, the electrical angle frequency is as F, phase inductance during as La, by C=(1/((2 π F)
2La)) stipulate the electric capacity of described capacitor.
13. the described generator of any one claim according to claim 1 to 11, is characterized in that,
Described generator is used for wind power generation.
14. generator according to claim 12, is characterized in that,
Described generator is used for wind power generation.
15. a generator, is characterized in that, this generator comprises:
Stator cylindraceous;
Columned rotor, its inboard at described stator is supported for and can rotates centered by central axis;
Diode, it is connected with the heterogeneous output line of from described stator, drawing; And
Capacitor, it is connected with described output line in the mode with described diodes in parallel,
Described stator comprises:
Stator core, it is formed by stacked steel plate and has towards the outstanding a plurality of teeth of described central axis; And
A plurality of coils, described a plurality of coils are formed at described a plurality of tooth in the mode of concentrating coiling,
Described rotor comprises:
Columned rotor subject, it is formed by stacked steel plate, and
A plurality of rotor magnets, described a plurality of rotor magnets insert a plurality of holes that are formed at described rotor subject in the mode parallel with described central axis.
16. generator according to claim 15, is characterized in that,
Draw described output line from described coil respectively,
Described diode forms the rectifier that the electric current from described output line is carried out rectification.
17. generator according to claim 15, is characterized in that,
The number of phases of described a plurality of coils is three-phase.
18. generator according to claim 16, is characterized in that,
The number of phases of described a plurality of coils is three-phase.
19. generator according to claim 10, is characterized in that,
Electric capacity 50% or more 100% below of the electric capacity of each capacitor in described a plurality of capacitor for make the power output maximum when rated speed.
20. generator according to claim 18, is characterized in that,
Electric capacity 50% or more 100% below of the electric capacity of each capacitor of described a plurality of capacitors for make the power output maximum when rated speed.
21. generator according to claim 15, is characterized in that,
The external diameter of described stator core is below the above 300mm of 50mm.
22. generator according to claim 20, is characterized in that,
The external diameter of described stator core is below the above 300mm of 50mm.
23. generator according to claim 15, is characterized in that,
Described generator is used for wind power generation.
24. generator according to claim 22, is characterized in that,
Described generator is used for wind power generation.
25. generator according to claim 15, is characterized in that,
Specified being output as below the above 10kW of 100W.
26. generator according to claim 24, is characterized in that,
Specified being output as below the above 10kW of 100W.
27. the described generator of any one claim according to claim 15 in 26, is characterized in that,
Take the electric capacity of described capacitor as C, the electrical angle frequency is as F, phase inductance during as La, by C=(1/((2 π F)
2La)) stipulate the electric capacity of described capacitor.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-237061 | 2010-10-22 | ||
| JP2010237061 | 2010-10-22 | ||
| PCT/JP2011/074075 WO2012053567A1 (en) | 2010-10-22 | 2011-10-19 | Power generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203289293U true CN203289293U (en) | 2013-11-13 |
Family
ID=45975278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011900008268U Expired - Fee Related CN203289293U (en) | 2010-10-22 | 2011-10-19 | Power generator |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203289293U (en) |
| WO (1) | WO2012053567A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6948652B2 (en) * | 2017-07-13 | 2021-10-13 | パナソニックＩｐマネジメント株式会社 | Power generation system and power system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5878778U (en) * | 1981-11-19 | 1983-05-27 | 日興電機工業株式会社 | Alternator for internal combustion engine |
| JPH05211752A (en) * | 1992-01-30 | 1993-08-20 | Matsushita Electric Ind Co Ltd | Generator for automobile |
| JP2008248875A (en) * | 2007-03-08 | 2008-10-16 | Kawasaki Plant Systems Ltd | Gas turbine power generation system and its operation control method |
-
2011
- 2011-10-19 CN CN2011900008268U patent/CN203289293U/en not_active Expired - Fee Related
- 2011-10-19 WO PCT/JP2011/074075 patent/WO2012053567A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012053567A1 (en) | 2012-04-26 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20181019 |