CN107355352B - The wind speed round detection system and method for wind power generating set - Google Patents
The wind speed round detection system and method for wind power generating set Download PDFInfo
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- CN107355352B CN107355352B CN201710626180.8A CN201710626180A CN107355352B CN 107355352 B CN107355352 B CN 107355352B CN 201710626180 A CN201710626180 A CN 201710626180A CN 107355352 B CN107355352 B CN 107355352B
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- generator
- wind
- power generating
- generating set
- wind wheel
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/327—Rotor or generator speeds
Abstract
The embodiment of the invention provides the wind speed round detection systems and method of a kind of wind power generating set.The system includes: dc generator and master controller, and the rotation axis of the dc generator is fixedly connected by transmission parts with wind wheel hub, when wind wheel rotation, the rotation axis of the dc generator is driven to rotate；The master controller calculates the tachometer value of the wind wheel by the output voltage with the DC generation mechatronics to obtain the output voltage of the dc generator.The rotation axis of dc generator is connected by transmission parts with wind wheel hub by the embodiment of the present invention, to detect the revolving speed of wind wheel, is avoided testing the speed using pulse counting method, is realized high-precision Rotating speed measring.
Description
Technical field
The present invention relates to the wind speed round detection systems and side of technical field of wind power more particularly to a kind of wind power generating set
Method.
Background technique
In Large-scale Wind Turbines, speed-changing oar-changing type wind-driven generator is generallyd use, that is, by the paddle for adjusting blade
Elongation controls the revolving speed of wind wheel, and then controls the output power of wind-driven generator.Therefore, it is necessary to the revolving speeds to wind wheel to survey
Amount and control, will make wind-driven generator stable operation, reach enough precision with regard to the tachometer value that inevitable requirement measures.
Currently, the measurement to wind speed round generally uses pulse counting method, that is, sensitive switch, Hall are arranged on wind wheel
The detection devices such as switch by detecting the number of unit time internal trigger detection device, and then calculate the revolving speed of wind wheel.
In the implementation of the present invention, at least there are the following problems for the discovery prior art: wind-driven generator by inventor
Wind wheel belongs to slow-speed of revolution axis, and in the slow-speed of revolution, the number of unit time internal trigger detection device can be reduced, to cause pulsimeter
Number is lost.And measuring step-by-step counting is usually that every 20ms or every 100ms calculate primary, multiplied by 50 (corresponding 20ms) or is multiplied later
It is converted into pulse number per second with 10 (corresponding 100ms), is converted into tachometer value per minute (unit is rpm) multiplied by 60, by
It is very big in the multiple multiplied, so the step-by-step counting of very little is lost, the jump of tachometer value measured can be all caused, leads to measurement essence
The decline of degree.
Summary of the invention
The embodiment of the present invention provides the wind speed round detection system and method for a kind of wind power generating set, to solve existing skill
The defect for causing tachometric survey precision to reduce using pulse counting method in art realizes high-precision wind speed round detection.
In order to achieve the above objectives, the embodiment of the invention provides a kind of wind speed round detection system of wind power generating set,
It include: dc generator and master controller, the rotation axis of the dc generator is fixed by transmission parts and wind wheel hub
Connection drives the rotation axis of the dc generator to rotate when wind wheel rotation；The master controller and the DC generation
Mechatronics calculate the tachometer value of the wind wheel by the output voltage to obtain the output voltage of the dc generator.
The embodiment of the invention also provides a kind of wind speed round detection methods of wind power generating set, are suitable for as described above
Wind power generating set wind speed round detection system, comprising: obtain the output voltage of dc generator；According to the output electricity
Pressure, calculates the tachometer value of the wind wheel.
The wind speed round detection system and method for wind power generating set provided in an embodiment of the present invention, by dc generator
Rotation axis is connected by transmission parts with wind wheel hub, to detect the revolving speed of wind wheel, avoids testing the speed using pulse counting method,
Realize high-precision Rotating speed measring.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the application
Limitation.In the accompanying drawings:
Fig. 1 is the schematic diagram that dc generator provided in an embodiment of the present invention measures revolving speed；
Fig. 2 is the structural representation of wind speed round detection system one embodiment of wind power generating set provided by the invention
Figure；
Fig. 3 is the structural representation of another embodiment of the wind speed round detection system of wind power generating set provided by the invention
Figure；
Fig. 4 is the structural representation of another embodiment of the wind speed round detection system of wind power generating set provided by the invention
Figure；
Fig. 5 is the structural representation of the wind speed round detection system further embodiment of wind power generating set provided by the invention
Figure；
Fig. 6 is the circuit structure diagram of DC generator voltage output loop in the embodiment of the present invention；
Fig. 7 is the flow chart of the wind speed round detection method embodiment of wind power generating set provided by the invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Wind power generating set drives wind wheel blade to rotate using wind-force, converts wind energy into mechanical energy, drives rotor rotation,
The speed of rotation is promoted through booster engine again, final output exchange.It is about per second according to current wind driven generator technology
Three meters of gentle breeze speed (degree of gentle breeze), can start to generate electricity.For in the prior art using pulse counting method measurement
The defect that wind speed round causes measurement accuracy low, the application provide a solution, are carried out using dc generator to wind wheel
It tests the speed, realizes high-precision Rotating speed measring.Dc generator is the machine for mechanical energy being converted into direct current energy, armature coil
The alternating electromotive force that middle induction generates is allowed to become direct current when drawing from brush end by the commutation effect of commutator cooperation brush
Electromotive force.Fig. 1 is the schematic diagram that dc generator provided in an embodiment of the present invention measures revolving speed.As shown in Figure 1, in two fixations
Magnetic pole N, S between, place a rotatable cylinder-shaped iron core, iron core upper fixed line circle abcd, the both ends a and d of coil
It is separately connected half copper ring of rotation and mutual insulating together with cylinder-shaped iron core, by two fixed brush A and B and circuit phase
Even.
The rotation axis (cylinder-shaped iron core) of dc generator is fixedly connected with measured object, then, when measured object drags cylinder
When shape iron core rotates in magnetic field, as iron core rotates in magnetic field, the induced electromotive force of alternation is generated in coil, by two
After the effect of the semicircle copper ring and brush of mutual insulating, become as the direct current in external circuit.Two semicircle copper rings (copper sheet) are named
Commutator segment is done, they, which are combined, is called commutator.In Fig. 1, under the rotation of rotation axis, the side ab and cd of coil are alternately
The magnetic line of force under cutting the pole N and S extremely.Each side and the direction of the induced potential in entire coil are alternations, the sense in coil
Answering potential is exchange potential, and under the commutation effect of commutator, the potential that brush A is drawn by commutator segment is cutting N always
Potential in the coil side of the pole magnetic line of force, therefore brush A has positive polarity always.As a same reason, brush B has negative polarity always, institute
It is constant with brush end energy lead direction, but the pulsating direct current potential of size variation.
Electromotive force (i.e. voltage value) formula of dc generator are as follows:
E=C*n* Φ ... ... ... ... ... ... ... ... ... ... ... ... ... (1)
Wherein, E is the output voltage of dc generator, and unit is volt (V)；C is the back EMF constant of dc generator,
It is only related with electric machine structure；N is the revolving speed of the rotation axis of dc generator, and unit is rev/min (rpm)；Φ is single magnetic pole
Air-gap flux, unit be weber (Wb).It can be seen that from formula (1), the output voltage of dc generator and turning for rotation axis
Rapid-result direct ratio.Therefore, by measuring the output voltage of dc generator, the revolving speed of rotation axis can be calculated, and then calculate
The revolving speed for the measured object being fixedly connected with the rotating shaft.
The embodiment of the present invention proposes a kind of wind speed round detection system of wind power generating set, comprising: dc generator and
Master controller.The rotation axis of dc generator is fixedly connected by transmission parts with wind wheel hub, when wind wheel rotation, driving
The rotation axis of dc generator rotates；Master controller and DC generation mechatronics, to obtain the output electricity of dc generator
Pressure calculates the tachometer value of wind wheel by output voltage.Using the voltage output characteristics of dc generator, wind speed round can be carried out
Detection.Detection method is not influenced by the pulse number of traditional rotating speed measurement method, and there is no measurement accuracy when the slow-speed of revolution
Low situation.Since the voltage signal that dc generator generates is analog quantity, it is possible to realize continuous Rotating speed measring, it can
Realize the real-time control of wind power generating set revolving speed.Since coil itself has the characteristic for preventing voltage jump, so detect
Tachometer value is less prone to jump.Only analogue collection module, which need to be arranged, can carry out voltage value acquisition, it is no longer necessary to traditional pulse
High speed counting module in measurement method, it is possible to reduce cost.
Above-described embodiment is the explanation of the technical principle and illustrative application framework to the embodiment of the present invention, below by
Multiple embodiments are further described in detail specific technical solution of the embodiment of the present invention.
Embodiment one
Fig. 2 is the structural representation of wind speed round detection system one embodiment of wind power generating set provided by the invention
Figure.As shown in Fig. 2, the wind speed round detection system of wind power generating set provided in an embodiment of the present invention, comprising: dc generator
201 and master controller 202.The rotation axis of dc generator 201 is fixedly connected by transmission parts with wind wheel hub, and wind wheel is worked as
When rotation, the rotation axis rotation of driving dc generator 201；Master controller 202 is electrically connected with dc generator 201, to obtain
The output voltage for taking dc generator 201 calculates the tachometer value of wind wheel by output voltage.
In embodiments of the present invention, transmission parts include driving wheel 203 and drive plate 204 and for connecting wind wheel hub
With the slow-speed shaft 205 of wind-driven generator (hereinafter referred to as: blower).Drive plate 204 is set on slow-speed shaft 205, and and driving wheel
203 engagements or Contact Transmission；Driving wheel 203 is fixedly connected with the rotation axis of dc generator 201.Slow-speed shaft 205 can be circle
Cylindricality, wind wheel drive blower to rotate by slow-speed shaft.In embodiments of the present invention, when wind power generating set is direct-drive unit,
Slow-speed shaft 205 can directly be connect with blower；When wind power generating set is double-fed unit, slow-speed shaft 205 can pass through gear
Case is connect with blower.
Specifically, the driving wheel 203 in the embodiment of the present invention can be gear, nibble with 204 phase of drive plate of gear structure
It closes, enables drive plate 204 that gear is driven to synchronize rotation；Driving wheel 203 or friction roller, utilize frictional force
With 204 Contact Transmission of drive plate, enable drive plate 204 that friction roller is driven to synchronize rotation.
When slow-speed shaft 205 is rotated with nutating disk 204, the rotation axis of dc generator 201 also in drive plate 204 and is passed
Driving wheel 203 is rotated by, and generates output voltage, and master controller 202 acquires voltage value E.According to following formula meters
Calculate the tachometer value v of blower:
V=E/ (k*p) ... ... ... ... ... ... ... ... ... ... ... ... .. (2)
Wherein, E is the output voltage of dc generator, and coefficient k=C* Φ, C is the back EMF constant of dc generator, Φ
For the air-gap flux of single magnetic pole, p is the transmission ratio of transmission parts.It is assumed that the number of teeth of drive plate 204 is n204, dc generator
The number of teeth in 201 rotation axis is n201, then transmission ratio p=n204/n201.It, can according to formula (2) and gear ratio formula
To obtain the tachometer value of slow-speed shaft (that is, wind wheel) are as follows: v=E*n201/(C*Φ*n204)。
Since the revolving speed of drive plate 204 is compared with (number of teeth is more, that is, n slowly204It is larger), and the revolving speed of dc generator 201 is very fast
(number of teeth of gear is few, that is, n201It is smaller).For example, it is assumed that transmission ratio is p=10, the tachometer value for the dc generator measured is
20rpm, and actual value is 21rpm；So the measured value of wind speed round value is 20/10=2rpm, and actual value is 21/10=
2.1rpm, difference only have 0.1rpm, so the tachometer value accuracy that measurement obtains is higher.
In embodiments of the present invention, dc generator can choose the minisize dc electric generator that output maximum value is 24V,
Advantage is the voltage value that analogue collection module can directly acquire its output, does not need to increase additional voltage detecting circuit,
It can reduce cost.
The wind speed round detection system of power generator group provided in an embodiment of the present invention, the rotation axis of dc generator is led to
It crosses transmission parts to be connected with wind wheel hub, to detect the revolving speed of wind wheel, avoids testing the speed using pulse counting method, realize height
The Rotating speed measring of precision.
Embodiment two
Fig. 3 is the structural representation of another embodiment of the wind speed round detection system of wind power generating set provided by the invention
Figure.As shown in figure 3, the wind speed round detection system of wind power generating set provided in an embodiment of the present invention, comprising: dc generator
301 and master controller 302.The rotation axis of dc generator 301 is fixedly connected by transmission parts with wind wheel hub, and wind wheel is worked as
When rotation, the rotation axis rotation of driving dc generator 301；Master controller 302 is electrically connected with dc generator 301, to obtain
The output voltage for taking dc generator 301 calculates the tachometer value of wind wheel by output voltage.
In embodiments of the present invention, transmission parts include driving wheel 303 and for connecting the low of wind wheel hub and blower
Fast axis 304.Driving wheel 303 is fixedly connected with the rotation axis of dc generator 301, and is engaged with slow-speed shaft 304 or Contact Transmission.
In embodiments of the present invention, slow-speed shaft 304 can be cylinder, or circular ring shape is fixedly connected with wind wheel hub 305,
Wind wheel drives blower rotation by circular ring shape slow-speed shaft.
Specifically, the driving wheel 303 in the embodiment of the present invention can be gear, the circular ring shape slow-speed shaft with gear structure
304 are meshed, and enable circular ring shape slow-speed shaft 304 that gear is driven to synchronize rotation；Driving wheel 303 or friction roll
Wheel, using frictional force and 304 Contact Transmission of circular ring shape slow-speed shaft, enable circular ring shape slow-speed shaft 304 drive friction roller and
Synchronous rotation.
When slow-speed shaft 304 rotates, the rotation axis of dc generator 301 also being rotated by driving wheel 303, and produce
Raw output voltage, master controller 302 acquire voltage value E.Specific calculating process is identical with above-mentioned embodiment illustrated in fig. 2,
Details are not described herein.
The wind speed round detection system of power generator group provided in an embodiment of the present invention, the rotation axis of dc generator is led to
It crosses transmission parts to be connected with wind wheel hub, to detect the revolving speed of wind wheel, avoids testing the speed using pulse counting method, realize height
The Rotating speed measring of precision.
Embodiment three
Fig. 4 is the structural representation of another embodiment of the wind speed round detection system of wind power generating set provided by the invention
Figure.As shown in figure 4, the wind speed round detection system of wind power generating set provided in an embodiment of the present invention, comprising: dc generator
401 and master controller 402.The rotation axis of dc generator 401 is fixedly connected by transmission parts with wind wheel hub, and wind wheel is worked as
When rotation, the rotation axis rotation of driving dc generator 401；Master controller 402 is electrically connected with dc generator 401, to obtain
The output voltage for taking dc generator 401 calculates the tachometer value of wind wheel by output voltage.
In embodiments of the present invention, transmission parts include the rotating part of slip ring 403 and for connecting wind wheel hub and wind
The slow-speed shaft 404 of machine.Dc generator 401 is installed on the inside of slip ring 403, the rotation axis and slip ring 403 of dc generator 401
Rotating part be fixedly connected, the non-rotating part of the fixed part (shell) of dc generator 401 and slip ring 403 is fixed to be connected
It connects, the rotating part of slip ring 403 is fixedly connected with slow-speed shaft 404.Slip ring 403 is used to connect in wind wheel hub 405 and cabin 406
Interior cable, because wind wheel hub 405 is rotation when wind power generating set is run, Internal cable is rotated also with wheel hub,
And the cable in cabin 406 is fixed, so the distortionless connection that slip ring 403 plays the inside and outside cable of wind wheel hub 405 is made
With.Wind wheel drives blower rotation by slow-speed shaft.
When wind wheel hub 405 drives slow-speed shaft 404 to rotate, the rotating part of slip ring 403 is driven to rotate, in slip ring 403
Also being rotated by 403 rotating part of slip ring of dc generator 401, and generate electricity output voltage, master controller 402
Acquire voltage value E.Specific calculating process is identical with above-mentioned embodiment illustrated in fig. 2, and details are not described herein.
The wind speed round detection system of power generator group provided in an embodiment of the present invention, the rotation axis of dc generator is led to
It crosses transmission parts to be connected with wind wheel hub, to detect the revolving speed of wind wheel, avoids testing the speed using pulse counting method, realize height
The Rotating speed measring of precision.
Example IV
Fig. 5 is the structural representation of the wind speed round detection system further embodiment of wind power generating set provided by the invention
Figure.As shown in figure 5, the wind speed round detection system of wind power generating set provided in an embodiment of the present invention, comprising: dc generator
501 and master controller 502.The rotation axis of dc generator 501 is fixedly connected by transmission parts with wind wheel hub, and wind wheel is worked as
When rotation, the rotation axis rotation of driving dc generator 501；Master controller 502 is electrically connected with dc generator 501, to obtain
The output voltage for taking dc generator 501 calculates the tachometer value of wind wheel by output voltage.
In embodiments of the present invention, transmission parts are the rotating part of slip ring 503.Dc generator 501 is installed on slip ring
The rotation axis of 503 inside, dc generator 501 is fixedly connected with the rotating part of slip ring 503, and dc generator 501 is consolidated
Fixed part (shell) is fixedly connected with the non-rotating part of slip ring 503, and the rotating part and wind wheel hub 504 of slip ring 503 are fixed
Connection.Slip ring 503 is used to connect the cable in wind wheel hub 504 and in cabin, because when wind power generating set is run, wind wheel wheel
Hub 504 is rotation, and Internal cable is rotated also with wheel hub, and the cable in cabin is fixed, so slip ring 503 plays
The distortionless connection function of the inside and outside cable of wind wheel hub 504.Circular ring shape slow-speed shaft 505 is for connecting wind wheel hub and blower, wind
Wheel drives blower rotation by slow-speed shaft.When wind wheel hub 504 drives circular ring shape slow-speed shaft 505 to rotate, the rotation of slip ring 503
Part also rotates with it, also being rotated by the rotating part of slip ring 503 of the dc generator 501 in slip ring 503, and produces
Raw output voltage, master controller 502 acquire voltage value E.Specific calculating process is identical with above-mentioned embodiment illustrated in fig. 2,
Details are not described herein.
The wind speed round detection system of power generator group provided in an embodiment of the present invention, the rotation axis of dc generator is led to
It crosses transmission parts to be connected with wind wheel hub, to detect the revolving speed of wind wheel, avoids testing the speed using pulse counting method, realize height
The Rotating speed measring of precision.
Fig. 6 is the circuit structure diagram of DC generator voltage output loop in the embodiment of the present invention.As shown in fig. 6, at this
Analogue collection module 601 is provided in invention the various embodiments described above, in master controller, for acquiring dc generator 602
Output voltage.Analogue collection module 601 can be by two sense channels (such as sense channel 1 and sense channel 2) and straight
The output end for flowing generator 602 is connected, and for carrying out redundancy detection, to prevent, wiring loosening from occurring in the circuit or one logical
It breaks down in road.Furthermore it is possible to the relay 603 in parallel in the output voltage circuit of dc generator 602, for overrunning
Detection, when the output voltage of dc generator 602 reaches default value, relay 603 disconnects the normally closed touching in theft-resistant link chain 604
Point 605.Normally-closed contact 605 connects 24V power supply, and connects with the other nodes 606 of theft-resistant link chain, is ultimately connected in master controller
Switching value acquisition module 607 sense channel on.When switching value acquisition module 607 detects that theft-resistant link chain disconnects (that is, normally closed touching
Point 605 disconnects) after, control wind-driven generator emergency shutdown.The security system of wind power generating set is also referred to as theft-resistant link chain, it is only
Stand on, be superior to the hardware protection measure of computer system or software systems.Theft-resistant link chain be mainly a safety relay or
Important monitoring point such as revolving speed, vibration, emergency stop etc. is sealed in control loop, controls the on-off of main power source by hardware-in-the-loop.According to weight
It wants degree that can also use the power-off of common relay control section route, forms level-one theft-resistant link chain, secondary safety chain.Hardware is overrun
Detection is completely by hardware realization, it is not necessary to rely on software, improve reliability.Further, (as shown in the figure in a sense channel
Sense channel 2) in series connection amendment resistance 608, for being modified to tachometer value.Specifically, first according to following formula to being
Number k is modified:
K '=(U2+IR)/(v*p).....………………………………………………..(3)
Wherein, U2Voltage value measured by sense channel (that is, sense channel 2) for series connection amendment resistance 608, R are
The resistance value of resistance 608 is corrected, I is that (current value can also be by analogue collection module by correcting the current value of resistance 608
601 measure), v is the tachometer value that the blower obtained is calculated according to formula (2).Coefficient k=C* Φ, C is the electronic of dc generator
Potential constant, Φ are the air-gap flux of single magnetic pole, and coefficient k is related to the design parameter of dc generator, ideally, for
Fixed dc generator, coefficient k be it is constant, still, in practical applications, with the abrasion and environmental factor of equipment
It influences, the coefficient k of dc generator is also, if calculating the tachometer value of blower using fixed k always, to be in variation
Inaccurate.Therefore, then blower, can be recalculated according to k ' according to formula (3) design factor k correction value k '
Tachometer value v ' is modified tachometer value v, to improve the detection accuracy of wind speed round.
Embodiment five
Fig. 7 is the flow chart of the wind speed round detection method embodiment of wind power generating set provided by the invention.Such as Fig. 7 institute
Show, method provided in an embodiment of the present invention can be adapted for the wind speed round detection system of the wind power generating set in above-described embodiment
System, this method comprises the following steps:
S701 obtains the output voltage of dc generator；
S702 calculates the tachometer value of wind wheel according to the output voltage.
In embodiments of the present invention, the tachometer value of blower can be calculated according to formula v=E/ (k*p), wherein E is direct current
The output voltage of generator, coefficient k=C* Φ, C is the back EMF constant of dc generator, and Φ is the air gap magnetic of single magnetic pole
Logical, p is the transmission ratio of transmission parts.
It further, can also be according to formula k '=(U2+ IR)/(v*p) be modified coefficient k, wherein U2For series connection
Voltage value measured by the sense channel of resistance is corrected, R is the resistance value of the amendment resistance, and I is by amendment resistance
Current value, v are the tachometer value for calculating the blower obtained.Then, the tachometer value v ' of blower is recalculated, according to k ' to be repaired
Just.
The wind speed round detection method of power generator group provided in an embodiment of the present invention, the rotation axis of dc generator is led to
It crosses transmission parts to be connected with wind wheel hub, to detect the revolving speed of wind wheel, avoids testing the speed using pulse counting method, realize height
The Rotating speed measring of precision.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (8)
1. a kind of wind speed round detection system of wind power generating set characterized by comprising dc generator and master control control
Device,
The rotation axis of the dc generator is fixedly connected by transmission parts with wind wheel hub, when wind wheel rotation, drives institute
State the rotation axis rotation of dc generator；
The master controller and the DC generation mechatronics are passed through with obtaining the output voltage of the dc generator
The output voltage calculates the tachometer value of the wind wheel,
The transmission parts include the rotating part of slip ring and the slow-speed shaft for connecting wind wheel hub and blower, the direct current hair
Motor is installed on the inside of the slip ring, and the rotation axis of the dc generator is fixedly connected with the rotating part of the slip ring,
The rotating part of the slip ring is fixedly connected with the slow-speed shaft；Alternatively,
The transmission parts are the rotating part of slip ring, and the dc generator is installed on the inside of the slip ring, the direct current
The rotation axis of generator is fixedly connected with the rotating part of the slip ring, and the rotating part of the slip ring and the wind wheel hub are solid
Fixed connection；Alternatively,
The transmission parts include driving wheel, drive plate and the slow-speed shaft for connecting wind wheel hub and blower；The drive plate
Be set on the slow-speed shaft, and with the driving wheel Contact Transmission；The rotation axis of the driving wheel and the dc generator
It is fixedly connected；Alternatively,
The transmission parts include driving wheel and the slow-speed shaft for connecting wind wheel hub and blower, the driving wheel with it is described
The rotation axis of dc generator is fixedly connected, and with the slow-speed shaft Contact Transmission.
2. the wind speed round detection system of wind power generating set according to claim 1, which is characterized in that the master control control
It is provided with analogue collection module in device processed, for acquiring the output voltage of the dc generator.
3. the wind speed round detection system of wind power generating set according to claim 2, which is characterized in that the analog quantity
Acquisition module is connected by two sense channels with the output end of the dc generator, for carrying out redundancy detection.
4. the wind speed round detection system of wind power generating set according to claim 2, which is characterized in that in the direct current
Relay in parallel in the output voltage circuit of generator, for carrying out detection of overrunning, when the output voltage of the dc generator
When reaching default value, the relay disconnects the normally-closed contact in theft-resistant link chain, controls the wind by switching value acquisition module
Power generator group emergency shutdown.
5. the wind speed round detection system of wind power generating set according to claim 3, which is characterized in that described in one
Series connection amendment resistance in sense channel, for being modified to the tachometer value.
6. a kind of wind speed round detection method of wind power generating set, any claim institute suitable for such as claim 1 to 5
The wind speed round detection system for the wind power generating set stated characterized by comprising
Obtain the output voltage of dc generator；
According to the output voltage, the tachometer value of the wind wheel is calculated.
7. the wind speed round detection method of wind power generating set according to claim 6, which is characterized in that described according to institute
Output voltage is stated, the tachometer value of the wind wheel is calculated, comprising:
The tachometer value of wind wheel is calculated according to formula v=E/ (k*p), wherein E is the output voltage of dc generator, coefficient k=C*
Φ, C are the back EMF constant of dc generator, and Φ is the air-gap flux of single magnetic pole, and p is the transmission ratio of transmission parts.
8. the wind speed round detection method of wind power generating set according to claim 7, which is characterized in that further include:
According to formula k '=(U2+ IR)/(v*p) be modified coefficient k, wherein U2For the sense channel institute of series connection amendment resistance
The voltage value measured, R are the resistance value for correcting resistance, and I is the current value by the amendment resistance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710626180.8A CN107355352B (en) | 2017-07-27 | 2017-07-27 | The wind speed round detection system and method for wind power generating set |
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| CN201710626180.8A CN107355352B (en) | 2017-07-27 | 2017-07-27 | The wind speed round detection system and method for wind power generating set |
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| Publication Number | Publication Date |
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| CN107355352A CN107355352A (en) | 2017-11-17 |
| CN107355352B true CN107355352B (en) | 2019-09-20 |
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| CN201710626180.8A Active CN107355352B (en) | 2017-07-27 | 2017-07-27 | The wind speed round detection system and method for wind power generating set |
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| CN113740931B (en) * | 2020-05-29 | 2023-12-22 | 金风科技股份有限公司 | Wind array detection method and device for wind generating set |
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| US5476293A (en) * | 1993-02-22 | 1995-12-19 | Yang; Tai-Her | Electric energy storage and distribution system of differential distribution type |
| CN101932829A (en) * | 2008-02-01 | 2010-12-29 | Isis创新有限公司 | Electricity generator |
| CN102108937A (en) * | 2011-02-25 | 2011-06-29 | 南京航空航天大学 | Wind-speed and rotating-speed sensorless full-wind-speed control strategy for fixed propeller-pitch variable speed permanent magnet synchronous wind generator set |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5476293A (en) * | 1993-02-22 | 1995-12-19 | Yang; Tai-Her | Electric energy storage and distribution system of differential distribution type |
| CN101932829A (en) * | 2008-02-01 | 2010-12-29 | Isis创新有限公司 | Electricity generator |
| CN102108937A (en) * | 2011-02-25 | 2011-06-29 | 南京航空航天大学 | Wind-speed and rotating-speed sensorless full-wind-speed control strategy for fixed propeller-pitch variable speed permanent magnet synchronous wind generator set |
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