CN209129782U - A kind of drive unit with variable airscrew pitch of wind driven generator - Google Patents
A kind of drive unit with variable airscrew pitch of wind driven generator Download PDFInfo
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- CN209129782U CN209129782U CN201820855848.6U CN201820855848U CN209129782U CN 209129782 U CN209129782 U CN 209129782U CN 201820855848 U CN201820855848 U CN 201820855848U CN 209129782 U CN209129782 U CN 209129782U
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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
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a kind of drive unit with variable airscrew pitch of wind driven generator, it includes battery module, Battery control module, master controller, frequency-conversion drive apparatus, pitch motor and reduction gearbox, wherein the Battery control module connects alternating current, the Battery control module connects the battery module by power line, the battery module connects the Battery control module by another power line and data line, the Battery control module connects the frequency-conversion drive apparatus by power line, the frequency-conversion drive apparatus connects the pitch motor by power line, the pitch motor drives blade by reduction gearbox, encoder set by the pitch motor connects the master controller by feedback signal line, and the master controller connects the frequency-conversion drive apparatus by data line and controls the pitch motor by the frequency-conversion drive apparatus.The utility model battery module has many advantages, such as that energy density is high, and battery pack real time data inspecting and remote operation may be implemented in Battery control module, and reliability is higher.
Description
Technical field
The utility model relates to technical field of wind power generation, drive and fill more particularly to a kind of wind-driven generator variable propeller pitch
It sets.
Background technique
Currently, Large-scale Wind Turbines have broad application prospects, can largely be made on the ground such as plateau, coastal
With.But since wind-force has apparent randomness and discontinuity, change dramatically may occur in a short time for wind speed.For
Optimize wind wheel power output, eliminates influence of the wind speed variation to wind driven generator output power, be usually respectively provided on medium-and-large-sized blower
There is variable propeller pitch device.Using the device wind-driven generator have unit starting performance is good, power output is stable, blower fan structure by
The advantages that power is small, stop safe.In addition unit break down and the operating conditions such as extreme wind speeds under, blower is dropped by putting away the oars to operate
The thrust born on low blades reduces the crest born on pylon, effect can also be significantly reduced under damped condition
Braking moment in transmission system.Usual blower executes feather operation by alternating current, but to guarantee in grid cut-off
Blade is under fortuitous event smoothly to put away the oars, it is necessary to provide reliable backup power source for drive unit with variable airscrew pitch.The backup power source is also
There need to be enough battery capacity redundancies, so that fan blade is smoothly put away the oars, guarantee unit safety.
Drive unit with variable airscrew pitch backup power source majority is still based on non-maintaining lead-acid accumulator at present, but lead-acid accumulator
Also the shortcomings that can not be ignored: energy density is low, cycle life is short, poor reliability, and long-time floating charge often generates leakage, and
And lead-acid battery does not have management system, can not the real-time status of battery is monitored and be shown, backup power source global reliability
It is lower.
Utility model content
In view of this, the main purpose of the utility model is to provide a kind of standby electricities greatly enhanced with reliability
Source and the drive unit with variable airscrew pitch of wind driven generator for significantly improving fan operation safety.
In order to achieve the above objectives, the utility model provides a kind of drive unit with variable airscrew pitch of wind driven generator comprising battery
Module, Battery control module, master controller, frequency-conversion drive apparatus, pitch motor and reduction gearbox, wherein the Battery control module
Alternating current is connected, the Battery control module connects the battery module by power line, and the battery module passes through another power
Line and data line connect the Battery control module, and the Battery control module connects the frequency conversion drive by power line and fills
It sets, which connects the pitch motor by power line, which drives blade, the change by reduction gearbox
Paddle motor is provided with encoder, which connects the master controller by feedback signal line, for making the master controller
The location information and velocity information of the blade are acquired, and the master controller connects the frequency conversion drive by data line and fills
It sets and the pitch motor is controlled by the frequency-conversion drive apparatus.
It is mounted with operational mode module and safety control strategy module inside the master controller, is respectively provided with perfect fortune
Row mode and safety control strategy.
The reduction gearbox is multi-stage planetary gear reduction gearbox.
The encoder includes being installed on the first encoder of the pitch motor tail portion and being installed on the pitch motor
In vane propeller-changing bearing at second encoder, first encoder and the second encoder are respectively by the position of blade
Information and velocity information are fed back at the master controller by the feedback signal line.
The Battery control module is connected with communication module, which connects control centre, the communication mould
Block realizes the communication of the Battery control module Yu the control centre.
Multiple limit switches are connected between the master controller and the blade, the position limitation protection for feather.
The battery module is lithium battery, nickel-metal hydride battery, capacitive battery or super capacitor.
Compared with prior art, the utility model feather drive system has the advantage that
1, primary controller procedure is divided fan operation mode in detail, significantly increases fan operation reliability；Peace
Full control strategy is run in master controller internal independence in other programs, and has highest priority.
2, feather drive system backup power source increases battery management system and signal acquiring system, and control centre can be with
Real-time query backup power source parameters, backup power source reliability greatly enhance, and fan operation safety also significantly improves.
3, feather drive system backup power source using the higher lithium battery of energy density, nickel-metal hydride battery, capacitive battery,
Super capacitor, have energy density is high, carried charge is big, it is small in size, light-weight, have extended cycle life, environmentally protective reliability height etc.
Advantage.Battery pack real time data inspecting and remote operation may be implemented in Battery control module, and reliability is higher.
Detailed description of the invention
Fig. 1 is the structure principle chart of the utility model drive unit with variable airscrew pitch of wind driven generator.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, and instead of all the embodiments, the embodiments of the present invention are to show
Example property, it is intended to for explaining the utility model, and should not be understood as limiting the present invention.
As shown in Figure 1, the drive unit with variable airscrew pitch of the utility model, including battery module 1 (i.e. backup power source), battery control
Molding block 2, master controller 3, frequency-conversion drive apparatus 4, pitch motor 5 and reduction gearbox 6.Wherein Battery control module 2 connects alternating current,
Battery control module 2 is connected by power line a1 connection battery module 1, battery module 1 by another power line a2 and data line d1
Battery control module 2 is connect, for Battery control module 2 by power line a3 connection frequency-conversion drive apparatus 4, the frequency-conversion drive apparatus 4 is logical
Cross power line a4 connection pitch motor 5.The pitch motor 5 drives blade 7 by reduction gearbox 6, which is provided with coding
Device, encoder connect master controller 3 by feedback signal line, for making master controller 3 acquire the location information and speed of blade 7
Information, and master controller 3, by data line d2 connection frequency-conversion drive apparatus 4, which passes through frequency-conversion drive apparatus 4
Control the propeller pitch angle of blade 7.
Operational mode module and safety control strategy module are mounted with inside master controller 3 in the utility model, respectively
With perfect operational mode and safety control strategy.By the detailed division to operational mode, keep fan operation reliability big
To be promoted.Safety control strategy is run in master controller internal independence in other programs, and has highest priority.In safety
In control strategy, sensor opening contact connects in a series arrangement, and the contact for being included has: 1) column foot emergency stop；2) cabin emergency stop；
3) wheel hub emergency stop；4) wind wheel hypervelocity；5) cable limitation is turned round；6) vibration is transfinited；7) master controller monitors；8) wind field control centre is situated between
Enter.If triggering the one or more of above-mentioned contact, safety control strategy just be will disconnect, so that aerodynamical brake is triggered,
I.e. blade is put away the oars.
Alternating current can pass through Battery control module 2, power line a3, frequency-conversion drive apparatus 4 and power line a4 in the utility model
It powers for pitch motor 5, while Battery control module 2 has battery charging and discharging management function, controllable alternating current passes through power line
A1 is the charging of battery module 1, and Battery control module 2 can control battery module 1 to pass through power line a2, Battery control module 2, power
Line a3, frequency-conversion drive apparatus 4 and power line a4 are the power supply of pitch motor 5, therefore Battery control module 2 can be implemented as variable pitch electricity
Switching between machine mains-supplied and battery module power supply.
For blower in stop position, propeller pitch angle is in 90 ° of position, and at this moment wind-force does not generate thrust to blade；Work as blower
When becoming operating status from shutdown status, propeller pitch angle is reduced to standby angle (β °) by 90 ° with certain speed (α °/s)；If wind speed
It can achieve grid-connected wind speed, propeller pitch angle continues to be reduced to γ ° of operation angle that (propeller pitch angle at γ ° there is optimal wind energy to absorb
Coefficient)；After blower generates electricity by way of merging two or more grid systems, when wind speed be less than rated wind speed when, make propeller pitch angle be maintained at γ ° it is constant；When wind speed is higher than volume
When determining wind speed, the power feedback signal of master controller 3 is fed back to via feedback signal line according to pitch motor 5, master controller 3 is defeated
Variable pitch control signal out, frequency-conversion drive apparatus 4 receives the signal (voltage signal υ), at internal control plate and driving plate
It is transformed into pitch motor driving signal (voltage signal U) after reason to pitch motor 5, realizes the speed regulation of pitch motor 5 and turns
To driving pitch motor 5 drives reduction gearbox 6 to turn over set corner with specific revolving speed, completes to put away the oars.Reduction gearbox 6 is multistage
Planetary gear reduction box drives blade to rotate by reduction of speed torque increase, final to realize feather function.When blower break down or
When there is halt instruction in wind field control centre, the safety control strategy module judgement in master controller 3 belongs to any security control
Strategy, and one of or several sensor opening contacts are triggered, master controller 3 will export order of putting away the oars rapidly, enable blower
It is shut down in several seconds.
Encoder in the utility model includes the first encoder A and second encoder B, and the first encoder A is installed on change
The tail portion of paddle motor 5, second encoder B are installed at the vane propeller-changing bearing in pitch motor 5, and two encoders are respectively by blade
Location information and velocity information fed back at master controller 3 by feedback signal line, formed close loop control circuit, master controller
The location information and velocity information of 3 pairs of blades carry out data calculating and control the propeller pitch angle of blade.Master controller 3 and blade 7 it
Between be connected with multiple limit switches, for the position limitation protection of feather, play the role of multistage limit.Change in the utility model
Paddle motor is three phase AC induction machine, can pass through encoder and limit switch accurate feedback variable pitch elongation during feather
Degree, speed and blade final position.Feather motor requires to run in larger temperature wide scope.
Battery control module in the utility model can be connected with communication module 8, and 8 other end of communication module connects in control
The communication of Battery control module 2 Yu control centre 9 may be implemented in the heart 9, communication module 8, and Battery control module 2 has Current Voltage
The functions such as acquisition, display, remote operation, Realtime Alerts, Battery control module 2 acquire each of battery module 1 by data line d1
Item parameter, and parameters are passed back control centre 9 by communication module 8.
Battery module 1 in the utility model can be lithium battery, nickel-metal hydride battery, capacitive battery or super capacitor, all kinds of
Type battery passes through respectively forms battery module in series and parallel.
There are two one large-scale wind driven generator is usual or more than two blades, each blade respectively correspond one group of feather
Driving device, every group of drive unit with variable airscrew pitch use parallel form.
The utility model has the following advantages that and good effect:
1, primary controller procedure is divided fan operation mode in detail, significantly increases fan operation reliability；Peace
Full control strategy is run in master controller internal independence in other programs, and has highest priority；
2, drive unit with variable airscrew pitch backup power source increases Battery control module and Signals collecting function, and control centre can be with
Real-time query backup power source parameters, backup power source reliability greatly enhance, and fan operation safety also significantly improves；
3, drive unit with variable airscrew pitch backup power source uses the higher lithium battery of energy density, nickel-metal hydride battery, capacitive battery
Or super capacitor, have carried charge it is big, it is small in size, light-weight, have extended cycle life, be environmentally protective, high reliability.
The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model
Range.
Claims (7)
1. a kind of drive unit with variable airscrew pitch of wind driven generator, which is characterized in that it includes battery module, Battery control module, master
Controller, frequency-conversion drive apparatus, pitch motor and reduction gearbox, wherein the Battery control module connects alternating current, the battery control
Molding block connects the battery module by power line, and the battery module connects the electricity by another power line and data line
Pond control module, the Battery control module connect the frequency-conversion drive apparatus by power line, which passes through
Power line connects the pitch motor, which drives blade by reduction gearbox, which is provided with encoder, should
Encoder connects the master controller by feedback signal line, for making the master controller acquire the location information of the blade
And velocity information, and the master controller connects the frequency-conversion drive apparatus by data line and is filled by the frequency conversion drive
Set the control pitch motor.
2. drive unit with variable airscrew pitch of wind driven generator as described in claim 1, which is characterized in that dress inside the master controller
It is loaded with operational mode module and safety control strategy module, is respectively provided with perfect operational mode and safety control strategy.
3. drive unit with variable airscrew pitch of wind driven generator as described in claim 1, which is characterized in that the reduction gearbox is series of rows
Star gear reduction box.
4. drive unit with variable airscrew pitch of wind driven generator as described in claim 1, which is characterized in that the encoder includes installation
Second at the first encoder and the vane propeller-changing bearing that is installed in the pitch motor of the pitch motor tail portion compiles
The location information of blade and velocity information are passed through the feedback respectively by code device, first encoder and the second encoder
Signal wire is fed back at the master controller.
5. drive unit with variable airscrew pitch of wind driven generator as described in claim 1, which is characterized in that the Battery control module connects
It is connected to communication module, which connects control centre, which realizes the Battery control module and institute
State the communication of control centre.
6. drive unit with variable airscrew pitch of wind driven generator as described in claim 1, which is characterized in that the master controller with it is described
Multiple limit switches are connected between blade, the position limitation protection for feather.
7. drive unit with variable airscrew pitch of wind driven generator as described in claim 1, which is characterized in that the battery module is lithium electricity
Pond, nickel-metal hydride battery, capacitive battery or super capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820855848.6U CN209129782U (en) | 2018-06-04 | 2018-06-04 | A kind of drive unit with variable airscrew pitch of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820855848.6U CN209129782U (en) | 2018-06-04 | 2018-06-04 | A kind of drive unit with variable airscrew pitch of wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209129782U true CN209129782U (en) | 2019-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820855848.6U Active CN209129782U (en) | 2018-06-04 | 2018-06-04 | A kind of drive unit with variable airscrew pitch of wind driven generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590958A (en) * | 2018-06-04 | 2018-09-28 | 包头市北工机械有限公司 | A kind of drive unit with variable airscrew pitch of wind driven generator |
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2018
- 2018-06-04 CN CN201820855848.6U patent/CN209129782U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590958A (en) * | 2018-06-04 | 2018-09-28 | 包头市北工机械有限公司 | A kind of drive unit with variable airscrew pitch of wind driven generator |
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