CN108282120A - Double-stator permanent magnet synchronous generator control system and method for wind-power electricity generation - Google Patents
Double-stator permanent magnet synchronous generator control system and method for wind-power electricity generation Download PDFInfo
- Publication number
- CN108282120A CN108282120A CN201810102854.9A CN201810102854A CN108282120A CN 108282120 A CN108282120 A CN 108282120A CN 201810102854 A CN201810102854 A CN 201810102854A CN 108282120 A CN108282120 A CN 108282120A
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- Prior art keywords
- stator
- wind
- permanent magnet
- generator
- casing
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/04—Control effected upon non-electric prime mover and dependent upon electric output value of the generator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
- H02J3/382—Dispersed generators the generators exploiting renewable energy
- H02J3/386—Wind energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/04—Machines with one rotor and two stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2103/00—Controlling arrangements characterised by the type of generator
- H02P2103/20—Controlling arrangements characterised by the type of generator of the synchronous type
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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
Abstract
The present invention proposes a kind of control system of the double-stator permanent magnet synchronous generator for wind-power electricity generation, including engine block, engine block includes casing, inner stator and external stator are equipped in casing, external stator is paperwrapped in outside inner stator, there are gaps between inner stator and external stator, inner stator is overlapped with the axis of external stator, rotor is equipped between inner stator and external stator, rotor is cup-shaped structure, its inner wall is equipped with interior permanent magnet, its outer wall is equipped with outer permanent magnet, rachis is equipped in casing, rachis is to stretching out outside casing, its end is fixed with flabellum, rotor is fixed on rachis；External stator and inner stator are connected separately with generator-side converter wear, it is connected to net side current transformer after generator-side converter wear parallel connection, net side current transformer is connected to by grid-connected breaker with supply network, rachis is equipped with speed probe, speed probe is connected to by control circuit with generator-side converter wear, double-stator permanent magnet synchronous generator is applied to wind power system, maximally utilises the wind energy of different wind regime.
Description
Technical field
The present invention relates to wind power plant more particularly to a kind of double-stator permanent magnet synchronous generators for wind-power electricity generation
Machine.
Background technology
The generator type for wind power generating set type selecting mainly has at present：Module of Asynchronous Generator, double-fed asynchronous hair
Motor, synchronous generator etc..
Module of Asynchronous Generator system structure is simple, at low cost and reliability is high, is relatively suitble to wind-power electricity generation this special
Occasion, at the initial stage of wind-power electricity generation development, Module of Asynchronous Generator is widely used, and effectively promotes Wind Power Generation Industry
Rise.But Module of Asynchronous Generator rotating speed can only the operation in 1%~5% on rated speed, the wind power of input cannot
It is excessive or too small, if generator is more than the rotating speed upper limit, irregular operation area will be entered.
Its working method of double-fed asynchronous generator is to adjust revolutional slip to the mode of Wound-rotor type rotor asynchronous motor tandem.
Double-fed asynchronous generator realizes energy exchange by inverter and rotor loop.Such motor can be worked with speed change, but be needed
Make its capacity about installation total capacity 1/3, and it is 2 to need speed bound ratio:1 inverter.
The magnetic flux of synchronous generator is generated by permanent magnet or Exciting Windings for Transverse Differential Protection, if using Exciting Windings for Transverse Differential Protection, electricity
The reactive power and stator terminal voltage of machine can be adjusted arbitrarily and not depend on the size loaded in circuit.Make on speed-changing draught fan
With synchronous motor, it is necessary to motor and power grid are isolated entirely from using inverter, all power needs are transmitted by inverter.Together
Step motor can install multipair magnetic pole, thus can be on direct-driving type wind power generation machine.Electrical excitation synchronous generator system at
This is higher, and power inverter loss is larger.
To sum up, Module of Asynchronous Generator can only operate in range very narrow on rated speed, and the wind power of input is not
Can be excessive or too small, if generator is more than the rotating speed upper limit, irregular operation area will be entered；There is multistage tooth in dual-feeding motor system
Roller box and slip ring, brush, inevitably bring frictional dissipation, increase maintenance and noise etc..In electric network fault moment, suddenly
The stator and rotor current requirement converter so to become larger increases safeguard measure, increases software and hardware input, and big failure electricity
Stream increases the torque load of wind energy conversion system.And traditional wind-driven generator, when wind speed is excessive, wind turbine is stopped, in order to avoid
It causes danger；When wind speed is too small, the kinetic energy that wind energy is provided is insufficient to allow blower fan work.Therefore, it is necessary to wind-power electricity generation
Machine carries out structure improvement, to overcome drawbacks described above.
Invention content
The object of the present invention is to provide a kind of double-stator permanent magnet synchronous generator for wind-power electricity generation, land productivity to greatest extent
With the wind energy resources under different wind regime, stable electric generation.
The present invention is technical solution used by solving its technical problem：
The control system of double-stator permanent magnet synchronous generator for wind-power electricity generation, including engine block, generator sheet
Body includes casing, is equipped with inner stator and external stator in casing, external stator is paperwrapped in outside inner stator, between inner stator and external stator
There are gap, inner stator is overlapped with the axis of external stator, and rotor is equipped between inner stator and external stator, and rotor is cup-shaped structure,
Its inner wall is equipped with interior permanent magnet, and outer wall is equipped with outer permanent magnet, is equipped with rachis in casing, rachis to stretching out outside casing,
Its end is fixed with flabellum, and rotor is fixed on rachis, is operated together with flabellum；
External stator and inner stator are connected separately with generator-side converter wear, are connected to net side current transformer after generator-side converter wear parallel connection,
Net side current transformer is connected to by grid-connected breaker with supply network, and rachis is equipped with speed probe, and speed probe passes through control
Circuit processed is connected to generator-side converter wear.
External stator is fixed on casing inner wall, and inner stator is fixed on positioning tube, and positioning tube end is fixed in casing.
A pair of bearings is fixed in casing, rachis is installed on by bearing in casing.
The control method of this double-stator permanent magnet synchronous generator for wind-power electricity generation, including：
When wind speed is larger, inner stator and external stator make generator use simultaneously；When wind speed is moderate, external stator generates electricity
Machine uses, and inner stator is unloaded；When wind speed is smaller, external stator makees generator use, and inner stator makees motor use, and rotating speed is close
In rated speed.
The advantage of the invention is that：
Double-stator permanent magnet synchronous generator is applied in wind power system by the generator, can inherit direct drive permanent magnetic synchronization
Generator saves the transmission devices such as gear-box, improves the advantages that running efficiency of system and reliability, can also not increase motor
Under the premise of volume, increase the output power and mechanical property of motor, while utilizing special control strategy, to greatest extent land productivity
With the wind energy of different wind regime.
On the basis of common single stator permasyn motor, the space of internal rotor is made full use of, it is a set of fixed to increase
Sub- winding.The rotary inertia of motor can be reduced to the greatest extent using the double-stator structure of inside and outside stator clamp center roller, while advantageous
In the heat dissipation of motor.Using two-sided permanent magnet body structure so that the excellent properties of permanent magnet material are adequately used, more favorably
In the power density for improving motor, the cost of the expense and operation and maintenance of system process manufacture is reduced.
The structure of common wind turbine determines that it can only run in certain wind speed range, and the technical program can make wind turbine more
Work in wide wind speed range.When wind speed is larger, since two stators work at the same time, so its workable highest wind velocity is big
In the highest wind velocity of common wind turbine；When wind speed is smaller, inner stator makees motor use, the kinetic energy provided and external wind energy one
Rising makes external stator work, and electromotive power output is more than the input electric power being input on inner stator, the at this time output of entire wind turbine
Electrical power is more than input electric power, and wind energy is utilized.
Description of the drawings
Fig. 1 is the longitudinal sectional view of the double-stator permanent magnet synchronous generator proposed by the present invention for wind-power electricity generation；
Fig. 2 is the use state diagram of the generator；
Fig. 3 is the control principle schematic diagram of the generator.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Diagram and specific embodiment are closed, the present invention is further explained.
As shown in Figure 1 and Figure 2, the control system of the double-stator permanent magnet synchronous generator proposed by the present invention for wind-power electricity generation
System includes engine block, and engine block includes casing 1, is equipped with inner stator 2 and external stator 3 in casing, external stator is paperwrapped in
There are gaps, inner stator to be overlapped with the axis of external stator outside inner stator, between inner stator and external stator, inner stator and external stator
Between be equipped with rotor 4, rotor is cup-shaped structure, and inner wall is equipped with interior permanent magnet 5, and outer wall is equipped with outer permanent magnet 6, casing
In be equipped with rachis 7, for rachis to stretching out outside casing, end is fixed with flabellum, and rotor is fixed on rachis, is transported together with flabellum
Turn；External stator and inner stator are connected separately with generator-side converter wear, are connected to net side current transformer after generator-side converter wear parallel connection, and net side becomes
Stream device is connected to by grid-connected breaker with supply network, and rachis is equipped with speed probe, and speed probe passes through control circuit
It is connected to generator-side converter wear.External stator is fixed on casing inner wall, and inner stator is fixed on positioning tube 8, and positioning tube end is fixed on
In casing.A pair of bearings 9 is fixed in casing, rachis is installed on by bearing in casing.
Such as Fig. 3, the control method of this double-stator permanent magnet synchronous generator for wind-power electricity generation, including：When wind speed compared with
When big, inner stator and external stator make generator use simultaneously；When wind speed is moderate, external stator makees generator use, and inner stator is empty
It carries；When wind speed is smaller, external stator makees generator use, and inner stator makees motor use, and rotating speed is close to rated speed.
Wind energy is a kind of clean renewable resource, has good exploitation prospect.But since wind has wind speed wave
Dynamic big, the unstable feature of wind energy, the wind energy that can be utilized is limited, and patent of the present invention is using double-stator permanent magnet synchronous motor and accordingly
Control strategy, improve the wind speed range using wind energy.Since China possesses wide territory area and very long seashore
Line, wind energy resources are abundant, using the raising of wind speed range, will be converted into considerable power resource.
Embodiment of above only technical concepts and features to illustrate the invention, its object is to allow those skilled in the art
Member understands present disclosure and is implemented, and it is not intended to limit the scope of the present invention, all according to spirit of that invention
The equivalent change or modification that essence is done should all cover within the scope of the present invention.
Claims (4)
1. the control system of the double-stator permanent magnet synchronous generator for wind-power electricity generation, including engine block, it is characterised in that：
Engine block includes casing, is equipped with inner stator and external stator in casing, external stator is paperwrapped in outside inner stator, inner stator
There are gaps, inner stator to be overlapped with the axis of external stator between external stator, and rotor, rotor are equipped between inner stator and external stator
For cup-shaped structure, inner wall is equipped with interior permanent magnet, and outer wall is equipped with outer permanent magnet, is equipped with rachis in casing, and rachis is to machine
It is stretched out outside shell, end is fixed with flabellum, and rotor is fixed on rachis, is operated together with flabellum；
External stator and inner stator are connected separately with generator-side converter wear, are connected to net side current transformer after generator-side converter wear parallel connection, net side
Current transformer is connected to by grid-connected breaker with supply network, and rachis is equipped with speed probe, and speed probe is by controlling electricity
Road is connected to generator-side converter wear.
2. the control system of the double-stator permanent magnet synchronous generator according to claim 1 for wind-power electricity generation, feature
It is：
External stator is fixed on casing inner wall, and inner stator is fixed on positioning tube, and positioning tube end is fixed in casing.
3. the control system of the double-stator permanent magnet synchronous generator according to claim 1 for wind-power electricity generation, feature
It is：
A pair of bearings is fixed in casing, rachis is installed on by bearing in casing.
4. the control method of the double-stator permanent magnet synchronous generator according to claim 1 for wind-power electricity generation, feature
It is, including：
When wind speed is larger, inner stator and external stator make generator use simultaneously；When wind speed is moderate, external stator makes as generator
With inner stator is unloaded；When wind speed is smaller, external stator makees generator use, and inner stator makees motor use, and rotating speed is close to volume
Determine rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102854.9A CN108282120A (en) | 2018-02-01 | 2018-02-01 | Double-stator permanent magnet synchronous generator control system and method for wind-power electricity generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102854.9A CN108282120A (en) | 2018-02-01 | 2018-02-01 | Double-stator permanent magnet synchronous generator control system and method for wind-power electricity generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108282120A true CN108282120A (en) | 2018-07-13 |
Family
ID=62807227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810102854.9A Pending CN108282120A (en) | 2018-02-01 | 2018-02-01 | Double-stator permanent magnet synchronous generator control system and method for wind-power electricity generation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108282120A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931221A (en) * | 2019-03-28 | 2019-06-25 | 华中科技大学 | A kind of double speed permanent magnetism wind power generation system |
| CN112072864A (en) * | 2020-07-21 | 2020-12-11 | 钟先成 | Installation method of double-stator permanent magnet synchronous motor and motor manufactured by same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042112A (en) * | 2007-04-16 | 2007-09-26 | 顾为东 | High efficiency low cost high power non-interconnected wind-driven generator group |
| CN102141007A (en) * | 2011-02-24 | 2011-08-03 | 中科盛创（青岛）电气有限公司 | Direct drive switch magnetic resistance wind driven generator system with concentric type double-stator structure |
| CN106440544A (en) * | 2015-08-05 | 2017-02-22 | 江苏金源锻造股份有限公司 | Wind-driven air conditioner applicable to various wind speeds |
| CN106469965A (en) * | 2015-08-05 | 2017-03-01 | 江苏金源锻造股份有限公司 | A kind of wind-driven generator electric power system |
-
2018
- 2018-02-01 CN CN201810102854.9A patent/CN108282120A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042112A (en) * | 2007-04-16 | 2007-09-26 | 顾为东 | High efficiency low cost high power non-interconnected wind-driven generator group |
| CN102141007A (en) * | 2011-02-24 | 2011-08-03 | 中科盛创（青岛）电气有限公司 | Direct drive switch magnetic resistance wind driven generator system with concentric type double-stator structure |
| CN106440544A (en) * | 2015-08-05 | 2017-02-22 | 江苏金源锻造股份有限公司 | Wind-driven air conditioner applicable to various wind speeds |
| CN106469965A (en) * | 2015-08-05 | 2017-03-01 | 江苏金源锻造股份有限公司 | A kind of wind-driven generator electric power system |
Non-Patent Citations (3)
| Title |
|---|
| SHUANGXIA NIU等: "Design and Control of a New Double-Stator Cup-Rotor Permanent-Magnet Machine for Wind Power Generation", 《 IEEE TRANSACTIONS ON MAGNETICS》 * |
| 刘细平等: "双定子永磁电机内外定子绕组相轴相对位置确定方法", 《电工技术学报》 * |
| 朱莉，潘文霞，霍志红等: "《风电场并网技术》", 31 March 2011, 中国电力出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931221A (en) * | 2019-03-28 | 2019-06-25 | 华中科技大学 | A kind of double speed permanent magnetism wind power generation system |
| CN109931221B (en) * | 2019-03-28 | 2020-12-08 | 华中科技大学 | Double-speed permanent magnet wind power generation system |
| CN112072864A (en) * | 2020-07-21 | 2020-12-11 | 钟先成 | Installation method of double-stator permanent magnet synchronous motor and motor manufactured by same |
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Application publication date: 20180713 |
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