CN102013777A - Variable speed synchronous generator - Google Patents
Variable speed synchronous generator Download PDFInfo
- Publication number
- CN102013777A CN102013777A CN2010105541373A CN201010554137A CN102013777A CN 102013777 A CN102013777 A CN 102013777A CN 2010105541373 A CN2010105541373 A CN 2010105541373A CN 201010554137 A CN201010554137 A CN 201010554137A CN 102013777 A CN102013777 A CN 102013777A
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- rotor
- stator
- synchronous generator
- excitation
- variable speed
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 24
- 230000005284 excitation Effects 0.000 claims abstract description 40
- 238000004804 winding Methods 0.000 claims abstract description 32
- 239000000696 magnetic material Substances 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 239000004020 conductor Substances 0.000 abstract 1
- 238000010248 power generation Methods 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Control Of Eletrric Generators (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a generator, aiming to provide a variable speed synchronous generator with variable speed and stronger controllability. The variable speed synchronous generator comprises a shell (1), a stator (2), a front end cover (11), a rear end cover (12), a rotor (3) and a bearing (4), wherein, the stator (2) is arranged in the shell (1); the stator (2) and the rotor (3) are made of a magnetic conductive material; the rotor (3) is arranged in the stator (2) through the bearing (4); the front end cover (11) and the rear end cover (12) are respectively arranged on the front end and the rear end of the shell (1); the rotor (3) is equipped with an exciting winding (5); the exciting winding (5) is connected with a peripheral alternative current (AC) excitation power supply phase; and a magnetic field which rotates relative to the rotor (3) is generated at the periphery of the rotor (3). The variable speed synchronous generator can be widely applied to the field of wind power generating equipment.
Description
Technical field
The present invention relates to a kind of generator, especially a kind of variable-ratio synchronous generator, this generator is used for wind power generation more.
Background technology
The sufficient energy is that promotion society is fast-developing, economy grows continuously and fast requisite factor, and wherein, electric energy is people's energy forms with the most use.In the past, making forms of electricity generation with the most use is thermal power generation and hydroelectric power generation.But the thermal power generation meeting is contaminated environment seriously, and hydroelectric power generation then requires the generating equipment construction on the Special geography position, and its installation manufacturing cost is high.In recent years, after the requirement along with country's proposition energy-saving and emission-reduction, various new-type generation modes arise at the historic moment, as gathering solar power generation, tidal power generation, wind power generation etc.Wherein, because wind energy is ubiquitous, wind power generation is a kind of easier universal generation mode.
Wind power generation comprises wind wheel and wind-driven generator.Wind-driven generator is a kind of pneumatic equipment blades made capturing wind energy of utilizing, and is converted into mechanical energy then, and further mechanical energy is converted into the energy apparatus of electric energy.
In the Nature, wind speed changes at any time.For a certain wind speed, the rotor of wind-driven generator should have the rotating speed of a correspondence, to obtain maximum wind-powered electricity generation conversion usefulness.At present, what most wind-driven generator adopted is asynchronous generator, can not realize the maximum conversion of wind-powered electricity generation usefulness.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, and synchronous generator a kind of variable-ratio, that realize the maximum conversion of wind-powered electricity generation usefulness is provided.
The technical solution adopted in the present invention is: the present invention includes housing, front end housing, rear end cap, stator, rotor, bearing, described stator is arranged in the described housing, described stator is provided with stator winding, described stator, described rotor is made by permeability magnetic material, described rotor is arranged in the described stator by described bearing, described front end housing, described rear end cap is separately positioned on the front-end and back-end of described housing, described rotor is provided with excitation winding, described excitation winding is connected with the ac excitation power supply of periphery, produces the magnetic field with respect to described rotor rotation in the periphery of described rotor.
Change with respect to the change of the rotating speed in the magnetic field of described rotor rotation according to ac excitation power supply.
Described excitation winding is symmetrical arranged in described rotor.
The invention has the beneficial effects as follows: owing to the present invention includes housing, front end housing, rear end cap, stator, rotor, bearing, described stator is arranged in the described housing, described stator is provided with stator winding, described stator, described rotor is made by permeability magnetic material, described rotor is arranged in the described stator by described bearing, described front end housing, described rear end cap is separately positioned on the front-end and back-end of described housing, described rotor is provided with excitation winding, in described excitation winding, pass to alternating current, produce a magnetic field in described rotor periphery, should constitute the rotating excitation of synchronous generator jointly with respect to the rotation of the magnetic field of rotor rotation and rotor with respect to described rotor rotation; Stator winding on the described stator cuts the generation induced electromotive force mutually with rotating excitation; Induced electromotive force frequency on the described stator winding is directly proportional with the rotating speed of this rotating excitation; Because described epitrochanterian excitation winding is connected with peripheral ac excitation power supply, so can control the various parameters of the alternating current in the described excitation winding of feeding such as frequency, magnitude of voltage, current value etc. by described ac excitation power supply; If the present invention is connected with electrical network, under the unalterable prerequisite of the frequency of electrical network, change the frequency of ac excitation power supply, must change the rotating speed of generator, be that the present invention is a variable-ratio, that is to say that variable speed generator of the present invention can be according to different wind conditions, with the rotating speed operation of the best, to realize best wind-powered electricity generation efficiency conversion.
Description of drawings
Fig. 1 is a whole cutaway view of the present invention;
Fig. 2 is the A-A cutaway view among Fig. 1.
Embodiment
As shown in Figure 1 and Figure 2, in the present embodiment, variable-ratio synchronous generator of the present invention adopts the version of field-rotatable type, and it comprises housing 1, front end housing 11, rear end cap 12, stator 2, rotor 3, bearing 4.Described stator 2 is arranged in the described housing 1, and described stator 2, described rotor 3 are made by permeability magnetic material, as silicon steel sheet etc.Described rotor 3 be arranged in the described stator 2 by described bearing 4 and and described stator 2 between leave the gap.The performance requirement of the thickness of described clearance layer and the shape synchronous generator according to the present invention is provided with.Described front end housing 11, described rear end cap 12 are separately positioned on the front-end and back-end of described housing 1.Described rotor 3 is provided with the AC excitation winding 5 of three-phase, and described excitation winding 5 is symmetrical arranged in described rotor 3, and described excitation winding 5 is connected with the ac excitation power supply of periphery.After in described excitation winding 5, feeding alternating current, produce the magnetic field that rotates with respect to described rotor 3 in the periphery of described rotor 3.Be provided with three symmetrical stator winding 6 in the inner groovy of described stator 2, in order to cutting magnetic induction line and induced electromotive force.
The present invention is the synchronous generator that is used for wind power generation.End outside described rotor 3 stretches out described housing 1 is connected with windmill.Under the drive of wind energy, described windmill captures wind energy, and synchronous generator of the present invention brings into operation.Because the excitation winding 5 on the described rotor 3 is connected with the ac excitation power supply of periphery by the brush 7 that is arranged on the armature spindle, so can control the various parameters that feed the alternating current in the described excitation winding 5 such as frequency, magnitude of voltage, current value etc. by described ac excitation power supply, under the requirement that meets with synchronized, be incorporated into the power networks with the induced electromotive force of regulation and control variable-ratio Stator Winding 6 of the present invention.Because mains frequency is unalterable, so variable-ratio synchronous generator of the present invention can come the rotating speed of regulating generator rotor by the frequency of regulation and control ac excitation power supply, to realize best wind-powered electricity generation efficiency conversion.
According to the operation principle of synchronous generator, be in peripheral and synchronous generator and refute the power frequency of the electrical network that connects and determined to refute the power frequency that the synchronous generator that connects sends electric energy with it.Change with respect to the change of the rotating speed in the magnetic field of described rotor 3 rotations according to ac excitation power supply.Change the alternating current in the described excitation winding 5 and change, just can realize the rotating speed of described rotor 3 is controlled at the peripheral rotating speed that produces of described rotor 3 with respect to the magnetic field of described rotor 3 rotations.When wind-force dies down, change the frequency of the alternating current of the described excitation winding 5 of input by ac excitation power supply, increase rotating speed with respect to the magnetic field of described rotor 3 rotations, guarantee to maintain certain value with respect to the magnetic field rotating speed of described stator winding 6; When the wind-force grow, change the frequency of the alternating current of the described excitation winding 5 of input by ac excitation power supply, reduce rotating speed with respect to the magnetic field of described rotor 3 rotations, guarantee to maintain certain value with respect to the magnetic field rotating speed of described stator winding 6.Such adjustment makes synchronous generator can realize speed change, has guaranteed the efficiency conversion and the very high operating efficiency of generator maximum simultaneously.
The ac excitation power supply that is connected with described excitation winding 5 is according to the size of external wind to described rotor 3 moments, change the frequency of the alternating current of the described excitation winding 5 of input, thereby change the rotating speed in described magnetic field with respect to 3 rotations of described rotor, to guarantee that the rotating speed with respect to the magnetic field of described stator 2 rotations is certain certain value.So, when the present invention can be implemented in the rotor speed change, also can realize the function of synchronous generator.
In sum, variable-ratio synchronous generator of the present invention is the very strong synchronous generator of a kind of controllability.
The present invention can be widely used in the wind energy generating plant field.
Claims (3)
1. variable-ratio synchronous generator, comprise housing (1), front end housing (11), rear end cap (12), stator (2), rotor (3), bearing (4), described stator (2) is arranged in the described housing (1), described stator (2) is provided with stator winding (6), described stator (2), described rotor (3) is made by permeability magnetic material, described rotor (3) is arranged in the described stator (2) by described bearing (4), described front end housing (11), described rear end cap (12) is separately positioned on the front-end and back-end of described housing (1), it is characterized in that: described rotor (3) is provided with excitation winding (5), described excitation winding (5) is connected with the ac excitation power supply of periphery, produces the magnetic field with respect to described rotor (3) rotation in the periphery of described rotor (3).
2. variable-ratio synchronous generator according to claim 1 is characterized in that: change with respect to the change according to ac excitation power supply of the rotating speed in the magnetic field of described rotor (3) rotation.
3. variable-ratio synchronous generator according to claim 1 is characterized in that: described excitation winding (5) is symmetrical arranged in described rotor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105541373A CN102013777A (en) | 2010-11-19 | 2010-11-19 | Variable speed synchronous generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105541373A CN102013777A (en) | 2010-11-19 | 2010-11-19 | Variable speed synchronous generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102013777A true CN102013777A (en) | 2011-04-13 |
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ID=43843838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105541373A Pending CN102013777A (en) | 2010-11-19 | 2010-11-19 | Variable speed synchronous generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102013777A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070162A (en) * | 2017-04-20 | 2017-08-18 | 西南交通大学 | self powered helmet |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107898A (en) * | 1986-11-18 | 1987-08-12 | 宋怀淳 | Generator with AC field excitation, variable-speed and constant |
| CN2195157Y (en) * | 1994-06-02 | 1995-04-19 | 吴积善 | AC excitation synchronous generator |
-
2010
- 2010-11-19 CN CN2010105541373A patent/CN102013777A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107898A (en) * | 1986-11-18 | 1987-08-12 | 宋怀淳 | Generator with AC field excitation, variable-speed and constant |
| CN2195157Y (en) * | 1994-06-02 | 1995-04-19 | 吴积善 | AC excitation synchronous generator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070162A (en) * | 2017-04-20 | 2017-08-18 | 西南交通大学 | self powered helmet |
| CN107070162B (en) * | 2017-04-20 | 2024-01-16 | 四川易尚天交实业有限公司 | self-powered helmet |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110413 |