CN206558089U - A kind of double-fed asynchronous wind generator system - Google Patents
A kind of double-fed asynchronous wind generator system Download PDFInfo
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- CN206558089U CN206558089U CN201720078725.1U CN201720078725U CN206558089U CN 206558089 U CN206558089 U CN 206558089U CN 201720078725 U CN201720078725 U CN 201720078725U CN 206558089 U CN206558089 U CN 206558089U
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Abstract
The utility model provides a kind of double-fed asynchronous wind generator system, double-fed wind power generator group including interconnection, grid-connected converter and monitoring host computer, the double-fed wind power generator group includes base and phase asynchronous frequency-conversion and speed-regulation motor and double-fed generator on the base, shaft coupling is provided between the phase asynchronous frequency-conversion and speed-regulation motor and the double-fed generator, the grid-connected converter includes rack and the frequency converter being located in the rack, current transformer, sensor and processor, the frequency converter and the phase asynchronous frequency-conversion and speed-regulation motor connection, the current transformer connects the double-fed generator, the sensor is connected with the current transformer and the processor respectively, the processor connects seat in the plane in the monitoring.The utility model is with strong points, perfect in shape and function, lecture experiment are numerous, is easy to live practice-training teaching to study.
Description
Technical field
The utility model belongs to electric power instructional device technical field, and in particular to a kind of double-fed asynchronous wind generator system.
Background technology
Wind-power electricity generation is increasingly subject to the extensive attention of countries in the world, obtained in recent years fast with its pollution-free and recyclability
Speed development.Had using the variable-speed constant-frequency wind power generation system of double feedback electric engine compared with traditional constant-speed and constant-frequency wind generator system
Significant advantage, such as power coefficient are high, can absorb as the energy hunting produced by wind speed mutation to avoid main shaft and transmission
Excessive moment of torsion and stress bears in mechanism, and the power factor of system can be improved etc..
But in experimental teaching field, it is actually rare for the teaching training apparatus of wind-power electricity generation, especially to double-fed
The research device of asynchronous wind generating.Actual double-fed asynchronous wind generator system is complicated huge, it is impossible to carry out student
Practical operation, does not reach the purpose of real training research.
Patent simulating wind power generation instructional device (publication number：CN102663940A) disclose a kind of including king-post and tower
The connected rocking lever of post, the support column connected and parallel with king-post with rocking lever, the guide rail motor for being fixed on support column lower end are set
It is standby, and for the guide rail of guide rail motor device motion, the guide rail motor device inside is provided with guide rail motor, the guide rail motor
Axle is connected by one end of belt transmission and roller bearing, instead of the gear drive used between two axles, and the other end of roller bearing, which is located at, leads
Moved on rail, and the outside of the roller bearing and guide rail contact is flexible coupling provided with rubber with guide rail, is effectively reduced machine operation
When noise, be adapted to teaching.But the device is not strong to the specific aim in wind-power electricity generation direction, experimental demonstration is single, it is impossible to system
The double-fed asynchronous wind-power electricity generation of ground Learning Studies.
Utility model content
The purpose of this utility model is to provide a kind of double-fed asynchronous wind generator system, with strong points, perfect in shape and function, demonstration
Experiment is numerous, is easy to live practice-training teaching to study.
The utility model provides following technical scheme：
A kind of double-fed asynchronous wind generator system, including the double-fed wind power generator group of interconnection, grid-connected converter and
Host computer is monitored, the double-fed wind power generator group includes base and the phase asynchronous frequency control electricity on the base
Motivation and double-fed generator, are provided with shaft coupling, institute between the phase asynchronous frequency-conversion and speed-regulation motor and the double-fed generator
Stating grid-connected converter includes rack and the frequency converter, current transformer, sensor and the processor that are located in the rack, the frequency converter
Connected with the phase asynchronous frequency-conversion and speed-regulation motor, the current transformer connects the double-fed generator, the sensor difference
It is connected with the current transformer and the processor, the processor connects seat in the plane in the monitoring.
It is preferred that, the double-fed wind power generator group also includes incremental encoder, and the incremental encoder connects institute
Doubly-fed generation machine rotor is stated, the real-time rotating speed of generator is measured.
It is preferred that, the phase asynchronous frequency-conversion and speed-regulation motor is provided with stator rotor terminal box, and the sensor passes through
The stator rotor terminal box connects the stator rotor of the phase asynchronous frequency-conversion and speed-regulation motor, measure motor voltage and
Electric current.
It is preferred that, the shaft coupling is provided with coupling guard, the fixed phase asynchronous electrical variable frequency adjustable speed of protection
The connection of machine and the double-fed generator.
It is preferred that, the current transformer uses two way convertor, and the two way convertor includes being connected with each other pusher side current transformer
And net side current transformer, the pusher side current transformer connection double-fed generator, the change of the net side current transformer connection network system
Depressor, the pusher side current transformer and the net side current transformer connect the processor respectively.
It is preferred that, the processor is using 32 fixed-point dsps, 32 fixed-point digital signal processings
Drive circuit is provided between device and the two way convertor, the processor is described two-way by drive circuit control driving
Current transformer.
It is preferred that, the sensor includes voltage sensor, current sensor and temperature sensor, the voltage sensor
Device, the current sensor and the temperature sensor connect the two way convertor and the processor respectively, collection pusher side,
DC side and grid side voltage and current signal, it is convenient real-time using temperature sensor measurement pusher side, the temperature of net side current transformer
Monitor the temperature of current transformer.
The beneficial effects of the utility model are：Using double-fed wind power generator group, tested for double-fed wind generating problem
Research is strong；It is flexible using two way convertor control, both generator stator-rotator electric current can be controlled to control power network current,
DC bus-bar voltage, control wind energy maximum tracking and the control of active power and reactive power can neatly be selected；Pass through
Seat in the plane can be easily by controlling frequency converter to realize that the rotational speed regulation of phase asynchronous frequency-conversion and speed-regulation motor simulates wind in monitoring
Machine is exerted oneself, and reaches experiment effect, is easy to practice teaching to operate.
Brief description of the drawings
Accompanying drawing is used for providing further understanding to of the present utility model, and constitutes a part for specification, with this practicality
New embodiment is used to explain the utility model together, does not constitute to limitation of the present utility model.In the accompanying drawings：
Fig. 1 is the utility model system structure diagram；
Fig. 2 is double-fed wind power generator group structural representation of the present utility model；
Fig. 3 is dual feedback wind power generation system main circuit topology schematic diagram；
Fig. 4 is control simulation experiment system block diagram of the present utility model；
Mark is base in figure；2. phase asynchronous frequency-conversion and speed-regulation motor；21. stator rotor terminal box；3. double-fed is sent out
Motor；4. incremental encoder；5. coupling guard；51. shaft coupling.
Embodiment
As shown in figure 1, a kind of double-fed asynchronous wind generator system, include the double-fed wind power generator group, simultaneously of interconnection
Net current transformer and monitoring host computer, by the system can the double-fed asynchronous wind generator system of environment Imitating MW class indoors,
Study wind speed curve change, generator connecting in parallel with system and off-grid function, wind energy conversion system simulation, power adjusting and the MPPT of double-fed wind generating
MPPT maximum power point tracking function etc..
As shown in Fig. 2 double-fed wind power generator group includes base 1 and the phase asynchronous frequency control on base 1
Motor 2 and double-fed generator 3, are provided with shaft coupling 51 between phase asynchronous frequency-conversion and speed-regulation motor 2 and double-fed generator 3, double
Presenting wind power generating set also includes incremental encoder 4, and the connection rotor of double-fed generator 3 of incremental encoder 4 measures generator
Real-time rotating speed.Phase asynchronous frequency-conversion and speed-regulation motor 2 is provided with stator rotor terminal box 21, and sensor passes through stator rotor wiring
Box 21 connects the stator rotor of phase asynchronous frequency-conversion and speed-regulation motor 2, measures the voltage and current of motor.Further, join
Axle device 51 is provided with coupling guard 5, the connection of protection fixed phase asynchronous frequency-conversion and speed-regulation motor 2 and double-fed generator 3.
As shown in figure 3, grid-connected converter includes frequency converter, current transformer, sensor and processor, frequency converter and phase asynchronous
Frequency-conversion and speed-regulation motor is connected, and current transformer connection double-fed generator, sensor is connected with current transformer and processor respectively, processor
The upper seat in the plane of connection monitoring.Current transformer uses two way convertor, and two way convertor includes being connected with each other pusher side current transformer and net side becomes
Device is flowed, pusher side current transformer connection double-fed generator, net side current transformer connects the transformer of network system, pusher side current transformer and net side
Current transformer connects processor respectively.Processor is using 32 fixed-point dsps, 32 fixed-point dsps
Drive circuit is provided between two way convertor, processor passes through drive circuit control driving two way convertor.
As shown in figure 4, double-fed asynchronous wind generator system is using Frequency Converter Control regulation three phase variable frequency asynchronous speed-regulating motor 2
Emulation wind turbine, controls frequency converter output frequency to adjust the rotating speed of motor, simulates different wind speed and come by the upper seat in the plane of monitoring
Double-fed wind power generator 3 is driven, the simulation of double-fed generator 3 is operated under different wind speed operating modes.Net side current transformer and pusher side become
Device is flowed to control using TMS320F2812 DSP core control panel.Pusher side, DC side and grid side voltage and current signal are adopted
Gathered with high-precision hall voltage-current sensor, IPM temperature is surveyed using temperature sensor inside pusher side, net side current transformer
Amount, the temperature change of the convenient current transformer of monitoring in real time.Monitor host computer logical using RS485 using a PC progress remote monitoring
News mode distinguishes remote monitoring frequency converter, net side current transformer and pusher side current transformer.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, although ginseng
The utility model is described in detail according to previous embodiment, for those skilled in the art, it still can be with
Technical scheme described in foregoing embodiments is modified, or equivalent substitution is carried out to which part technical characteristic.It is all
Within spirit of the present utility model and principle, any modification, equivalent substitution and improvements made etc. should be included in this practicality
Within new protection domain.
Claims (7)
1. a kind of double-fed asynchronous wind generator system, it is characterised in that the double-fed wind power generator group including interconnection, grid-connected
Current transformer and monitoring host computer, the double-fed wind power generator group include base and the phase asynchronous change on the base
Frequency modulation electric motor with speed and double-fed generator, provided with connection between the phase asynchronous frequency-conversion and speed-regulation motor and the double-fed generator
Axle device, the grid-connected converter includes rack and the frequency converter, current transformer, sensor and the processor that are located in the rack, institute
Frequency converter and the phase asynchronous frequency-conversion and speed-regulation motor connection are stated, the current transformer connects the double-fed generator, the biography
Sensor is connected with the current transformer and the processor respectively, and the processor connects seat in the plane in the monitoring.
2. a kind of double-fed asynchronous wind generator system according to claim 1, it is characterised in that the double-fed wind generating
Unit also includes incremental encoder, and the incremental encoder connects the doubly-fed generation machine rotor.
3. a kind of double-fed asynchronous wind generator system according to claim 1, it is characterised in that the phase asynchronous frequency conversion
Variable-speed motor is provided with stator rotor terminal box, and it is different that the sensor connects described three by the stator rotor terminal box
Walk the stator rotor of frequency-conversion and speed-regulation motor.
4. a kind of double-fed asynchronous wind generator system according to claim 1, it is characterised in that the shaft coupling is provided with
Coupling guard.
5. a kind of double-fed asynchronous wind generator system according to claim 1, it is characterised in that the current transformer is using double
To current transformer, the two way convertor includes being connected with each other pusher side current transformer and net side current transformer, the pusher side current transformer connection
The double-fed generator, the net side current transformer connects the transformer of network system, and the pusher side current transformer and the net side become
Stream device connects the processor respectively.
6. a kind of double-fed asynchronous wind generator system according to claim 5, it is characterised in that the processor uses 32
Position fixed-point dsp, provided with driving between 32 fixed-point dsps and the two way convertor
Circuit.
7. a kind of double-fed asynchronous wind generator system according to claim 5, it is characterised in that the sensor includes electricity
Pressure sensor, current sensor and temperature sensor, the voltage sensor, the current sensor and the temperature sensor
The two way convertor and the processor are connected respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720078725.1U CN206558089U (en) | 2017-01-20 | 2017-01-20 | A kind of double-fed asynchronous wind generator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720078725.1U CN206558089U (en) | 2017-01-20 | 2017-01-20 | A kind of double-fed asynchronous wind generator system |
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| Publication Number | Publication Date |
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| CN206558089U true CN206558089U (en) | 2017-10-13 |
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| CN201720078725.1U Active CN206558089U (en) | 2017-01-20 | 2017-01-20 | A kind of double-fed asynchronous wind generator system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106781922A (en) * | 2017-01-20 | 2017-05-31 | 江苏伟创晶智能科技有限公司 | A kind of double-fed asynchronous wind generator system |
| CN110807977A (en) * | 2019-11-29 | 2020-02-18 | 南京康尼电气技术有限公司 | Wind power generation experiment platform and experiment method |
-
2017
- 2017-01-20 CN CN201720078725.1U patent/CN206558089U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106781922A (en) * | 2017-01-20 | 2017-05-31 | 江苏伟创晶智能科技有限公司 | A kind of double-fed asynchronous wind generator system |
| CN110807977A (en) * | 2019-11-29 | 2020-02-18 | 南京康尼电气技术有限公司 | Wind power generation experiment platform and experiment method |
| CN110807977B (en) * | 2019-11-29 | 2021-07-30 | 南京康尼电气技术有限公司 | Wind power generation experiment platform and experiment method |
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