CN208138093U - Wind turbines permanent magnet direct-drive pitch-variable system dynamic load simulating device - Google Patents
Wind turbines permanent magnet direct-drive pitch-variable system dynamic load simulating device Download PDFInfo
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- CN208138093U CN208138093U CN201820604106.6U CN201820604106U CN208138093U CN 208138093 U CN208138093 U CN 208138093U CN 201820604106 U CN201820604106 U CN 201820604106U CN 208138093 U CN208138093 U CN 208138093U
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- 230000008878 coupling Effects 0.000 claims description 20
- 238000010168 coupling process Methods 0.000 claims description 20
- 238000005859 coupling reaction Methods 0.000 claims description 20
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 7
- 238000011217 control strategy Methods 0.000 abstract description 7
- 238000004088 simulation Methods 0.000 abstract description 7
- 235000013350 formula milk Nutrition 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 210000003746 feather Anatomy 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 235000020610 powder formula Nutrition 0.000 description 1
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Abstract
The utility model discloses a kind of Wind turbines permanent magnet direct-drive pitch-variable system dynamic load simulating device, the torsion shaft of torque/speed sensor is connect with the magneto and magnetic-powder-type dynamometer machine being located at left and right sides of it respectively；Magneto, torque/speed sensor pass through frequency converter, capture card and host computer respectively and connect；Magnetic-powder-type dynamometer machine is connect by torque/speed regulator with Dynamometer Control device；Dynamometer Control device is connect with host computer, is also connect by current regulator with magnetic-powder-type dynamometer machine.The device can accurate simulation go out loading condition of the permanent magnet direct-drive pitch-variable system under work condition environment, for permanent magnet direct-drive pitch-variable system control strategy reliability and reasonability provide verifying basis.
Description
Technical field
The utility model relates to load simulating device and method, specifically a kind of Wind turbines permanent magnet direct-drive pitch-variable system
Dynamic load simulating device belongs to permanent-magnetic variable-frequency drive system control technology field.
Background technique
Pitch-variable system in wind power generating set can automatically adjust propeller pitch angle when wind speed changes, and realize to wind energy
It captures to greatest extent, ensures that blower is able to maintain safe and stable operation in high wind speed area.Traditional pitch-variable system is different using exchanging
The kind of drive of motor or direct current generator cooperation retarder is walked, this Mechanical & Electrical Transmission mode drive line is long, and transmission link is more, very
All multiple faults are easy to appear, and variable-pitch transmission gear is typically mounted on pylon, once breaking down, maintenance of equipment is more
It is larger to change difficulty.In recent years, " frequency conversion permanent magnet directly drives " becomes the new issue that every profession and trade emphasis is captured, if in Wind turbines feather
In system, the blade of wind turbines rotor is directly driven using low-speed big magneto, cancels this transmission of retarder
Link, can reduce the overall energy consumption and running noises of transmission system, and improve the reliability of Mechatronic Systems.
The blade of wind turbines rotor is directly driven using the magneto of low-speed big, at this time magneto and paddle
Leaf is connected directly, and blade unbalanced load suffered by the different location in wind wheel Plane of rotation and its fluctuation can be directly delivered to
On motor shaft, thus more stringent requirements are proposed to the control strategy of permanent magnet direct-drive pitch-variable system.Currently, permanent magnetic drive is
The verifying of the control strategy of system usually illustrates the validity of control strategy by the random of simulation or the load of mutation, but
It is that such methods can not completely illustrate performance of the designed control strategy in actual condition environment.In addition, actual
Magneto parameter used by motor and experiment in permanent magnet direct-drive pitch-variable system is there are when difference, and experiment obtains at this time
Data can not comprehensively illustrate the validity of pitch-variable system control strategy.
Summary of the invention
In view of the above-mentioned problems of the prior art, the utility model provides a kind of Wind turbines permanent magnet direct-drive feather system
Unite dynamic load simulating device, can accurate simulation go out load feelings of the permanent magnet direct-drive pitch-variable system under different work condition environments
Condition provides verifying for the reliability and reasonability of permanent magnet direct-drive pitch-variable system control strategy.
To achieve the goals above, the technical solution adopted in the utility model is：A kind of Wind turbines permanent magnet direct-drive variable pitch
Away from system dynamic load simulating device, including pedestal, magneto, torque/speed sensor and magnetic-powder-type dynamometer machine；
The magneto, torque/speed sensor and magnetic-powder-type dynamometer machine are fixedly connected sequentially in left-right direction in base
Seat top, the left and right ends of the torsion shaft of torque/speed sensor pass through shaft coupling I and shaft coupling II and magneto respectively
The input axis connection of output shaft and magnetic-powder-type dynamometer machine；
The magneto, torque/speed sensor pass through frequency converter, capture card and host computer respectively and connect；Institute
Magnetic-powder-type dynamometer machine is stated to connect by torque/speed regulator with Dynamometer Control device；The Dynamometer Control device and upper meter
The connection of calculation machine, is also connect by current regulator with magnetic-powder-type dynamometer machine.
Further, magneto, shaft coupling I, torque/speed sensor, shaft coupling II and magnetic-powder-type dynamometer machine is defeated
Enter axis and is in same axis.
In the apparatus, the signal of Dynamometer Control device passes to current regulator, controls magnetic-powder-type by current regulator
Dynamometer machine exports loading moment, and the loading moment of magnetic-powder-type dynamometer machine acts on the motor shaft of magneto through shaft coupling.?
Torque/speed regulator is installed, torque/speed regulator acquisition magnetic-powder-type is surveyed among magnetic-powder-type dynamometer machine and Dynamometer Control device
The actual loaded value and tachometer value of function machine, feed back to Dynamometer Control device, are added by Dynamometer Control device according to value of feedback and setting
The difference of load value carries out PI and controls operation, realizes the tracking to required loading moment, goes out big function by the device energy accurate simulation
Rate permanent-magnet drive system is in the loading condition under various work condition environments, consequently facilitating controlling plan to high-power permanent magnet drive system
Slightly verified.
Detailed description of the invention
Fig. 1 is the utility model load simulating device structural schematic diagram；
Fig. 2 is the analogy method flow diagram of the utility model simulator.
In figure：1, pedestal, 2, magneto, 3, shaft coupling I, 4, torque/speed sensor, 5, shaft coupling II, 6, magnetic powder
Formula dynamometer machine, 7, torque/speed regulator, 8, current regulator, 9, Dynamometer Control device, 10, capture card, 11, upper calculating
Machine, 12, frequency converter.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Figure 1, the permanent magnet direct-drive pitch-variable system dynamic load simulating device in the utility model, including pedestal 1,
Magneto 2, torque/speed sensor 4 and magnetic-powder-type dynamometer machine 6；
The magneto 2, torque/speed sensor 4 and magnetic-powder-type dynamometer machine 6 are fixedly connected sequentially in left-right direction
1 top of pedestal, the left and right ends of the torsion shaft of torque/speed sensor 4 pass through respectively shaft coupling I 3 and shaft coupling II 5 with forever
The output shaft of magneto 2 and the input axis connection of magnetic-powder-type dynamometer machine 6；
The magneto 2, torque/speed sensor 4 pass through frequency converter 12, capture card 10 and host computer 11 respectively
Connection；The magnetic-powder-type dynamometer machine 6 is connect by torque/speed regulator 7 with Dynamometer Control device 9；The Dynamometer Control
Device 9 is connect with host computer 11, is also connect by current regulator 8 with magnetic-powder-type dynamometer machine 6.
For the concentricity of proof load simulator, so that accuracy of the dynamometer machine to magneto load simulation is improved,
Magneto 2, shaft coupling I 3, torque/speed sensor 4, shaft coupling II 5 and magnetic-powder-type dynamometer machine 6 input shaft be in same
Axis.
Torque/speed sensor 4 is connect by data line with capture card 10, while capture card 10 passes collected data
It is delivered in host computer 11；Frequency converter 12 receives the instruction of host computer 11, and magneto 2 is controlled by frequency converter 12
System；The torque/speed signal of magnetic-powder-type dynamometer machine 6 is transmitted in Dynamometer Control device 9 through torque/speed regulator 7 as anti-
Feedback value carries out PI according to the difference of value of feedback and setting loaded value by Dynamometer Control device 9 and controls operation, realizes to required loading force
The tracking of square；The signal of Dynamometer Control device 9 passes to current regulator 8, controls magnetic-powder-type dynamometer machine 6 by current regulator 8
Loading moment is exported, Dynamometer Control device 9 is connect with host computer 11 by data line, receives what host computer 11 instructed
Fictitious load.
The invention also discloses the dynamic load simulation methods of above-mentioned load simulating device, and steps are as follows：
Step 1, the centrifugal force loading moment M of blade in pitch process is calculatedc, moment of inertia M that blade is rotated around the longitudinal axism,
The moment of friction M that blade coupling part friction in pairs power generatesf, opening paddle is calculated according to formula (1), (2) respectively accordingly
The loading moment M of permanent magnet direct-drive pitch-controlled system during leafon=Mf+Mm-Mc(1), permanent magnet direct-drive becomes during closing blade
The loading moment M of system for rotatingoff=Mc+Mf+Mm(2), the load under two operating conditions of permanent magnet direct-drive pitch-variable system is unified
It is named as TL *。
Step 2, the physical quantity scaling of equation of rotor motion, the similar system of computational load torque are determined according to the theory of similarity
Number：
The rotary inertia of motor is J in permanent magnet direct-drive pitch-variable systemm *, revolving speed ωm *, electromagnetic torque Te *, load turn
Square is TL *, ignore the influence of friction factor in electric system, the equation of motion is
The rotary inertia of magneto 2 is J in dynamic load simulating devicem, revolving speed ωm, electromagnetic torque Te, load
Torque is TL, then the equation of motion of the corresponding perunit valve system of load simulating device is
Wherein, Jm、ωm、Te、TLRespectively Jm *、ωm *、Te *、TL *Perunit value.T in formula (2) is unmarked for t*It is
Because of time similarity factor Zt=1 reason, i.e. formula (3) and (4) are ZtSimilar system under the conditions of=1, the middle system of formula (4)
Unite a certain moment the phenomenon that in formula (3) the phenomenon that system synchronization it is corresponding.Rotary inertia, electromagnetic torque, is born revolving speed
Similarity factor corresponding to set torque is respectively ZJ=Jm */Jm、Zω=ωm */ωm、ZTe=Te */Te、ZTL=TL */TL.Work as motor
After dragging system starting, the electromagnetic torque T of magneto outputeWith the loading moment T of receivingLIt is approximately equal, it can be assumed that
ZTe≈ZTL=ZT, therefore, the equation of motion of magneto can be rewritten as in permanent magnet direct-drive pitch-variable system
When magneto in permanent magnet direct-drive pitch-variable system
When there is similar characteristic with magneto 2 in dynamic load simulating device, the similarity factor Z of available loading momentT=ZJ·
Zω (5)。
Step 3, the loading moment that magnetic-powder-type dynamometer machine 6 exports in dynamic load simulating device is calculated：
As shown in Fig. 2, the corresponding rotary inertia of magneto 2, coefficient of friction, electromagnetic torque are respectively Jm、Bm、Te, magnetic powder
The corresponding rotary inertia of formula dynamometer machine 6, coefficient of friction, loading moment are respectively Jp、Bp、Tp, turn of shaft coupling I 3, shaft coupling II 5
Dynamic inertia is respectively Jc1、Jc2, the oval dotted line frame in flow chart indicates the transmission function of mechanical structure in simulator, side
Shape dotted line frame indicates the torque of I 3 output end of shaft coupling, and measuring its torque by torque/speed sensor 4 is Tsm, revolving speed wm,
When the load of permanent magnet direct-drive pitch-variable system is TLWhen *, subtracts magnetic-powder-type dynamometer machine 6, the rotary inertia of shaft coupling II 5 itself and rub
Bring extra load, which is wiped, to get the loading moment that magnetic-powder-type dynamometer machine 6 exports into experiment is
The simulation that magnetic-powder-type dynamometer machine 6 realizes dynamic load is controlled by Dynamometer Control device 9, in addition, in dynamic load mould
Low-pass filtering link (LPF) is added in draft experiment system, in the loading moment formula that exports to above-mentioned magnetic-powder-type dynamometer machine 6
Noise brought by velocity differentials item and interference are filtered.
Claims (2)
1. a kind of Wind turbines permanent magnet direct-drive pitch-variable system dynamic load simulating device, which is characterized in that including pedestal (1),
Magneto (2), torque/speed sensor (4) and magnetic-powder-type dynamometer machine (6)；
The magneto (2), torque/speed sensor (4) and magnetic-powder-type dynamometer machine (6) are fixedly connected sequentially in left-right direction
On pedestal (1) top, the left and right ends of the torsion shaft of torque/speed sensor (4) pass through shaft coupling I (3) and shaft coupling respectively
II (5) and the output shaft of magneto (2) and the input axis connection of magnetic-powder-type dynamometer machine (6)；
The magneto (2), torque/speed sensor (4) pass through frequency converter (12), capture card (10) and upper calculating respectively
Machine (11) connection；The magnetic-powder-type dynamometer machine (6) is connect by torque/speed regulator (7) with Dynamometer Control device (9)；Institute
It states Dynamometer Control device (9) to connect with host computer (11), also even by current regulator (8) and magnetic-powder-type dynamometer machine (6)
It connects.
2. Wind turbines permanent magnet direct-drive pitch-variable system dynamic load simulating device as described in claim 1, which is characterized in that
Magneto (2), shaft coupling I (3), torque/speed sensor (4), shaft coupling II (5) and the magnetic-powder-type dynamometer machine (6)
Input shaft be in same axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820604106.6U CN208138093U (en) | 2018-04-26 | 2018-04-26 | Wind turbines permanent magnet direct-drive pitch-variable system dynamic load simulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820604106.6U CN208138093U (en) | 2018-04-26 | 2018-04-26 | Wind turbines permanent magnet direct-drive pitch-variable system dynamic load simulating device |
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| Publication Number | Publication Date |
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| CN208138093U true CN208138093U (en) | 2018-11-23 |
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| CN201820604106.6U Expired - Fee Related CN208138093U (en) | 2018-04-26 | 2018-04-26 | Wind turbines permanent magnet direct-drive pitch-variable system dynamic load simulating device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343565A (en) * | 2018-04-26 | 2018-07-31 | 中国矿业大学 | Wind turbines permanent magnet direct-drive pitch-variable system dynamic load simulating device and method |
| CN111637011A (en) * | 2020-06-10 | 2020-09-08 | 国网山东省电力公司经济技术研究院 | Electric power system simulation direct-drive type wind generating set monitoring system |
| CN111722107A (en) * | 2020-06-11 | 2020-09-29 | 天津瑞源电气有限公司 | Variable-pitch motor multifunctional maintenance test platform |
-
2018
- 2018-04-26 CN CN201820604106.6U patent/CN208138093U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343565A (en) * | 2018-04-26 | 2018-07-31 | 中国矿业大学 | Wind turbines permanent magnet direct-drive pitch-variable system dynamic load simulating device and method |
| CN108343565B (en) * | 2018-04-26 | 2023-12-19 | 中国矿业大学 | Dynamic load simulation device and method for permanent magnet direct drive variable pitch system of wind turbine generator |
| CN111637011A (en) * | 2020-06-10 | 2020-09-08 | 国网山东省电力公司经济技术研究院 | Electric power system simulation direct-drive type wind generating set monitoring system |
| CN111722107A (en) * | 2020-06-11 | 2020-09-29 | 天津瑞源电气有限公司 | Variable-pitch motor multifunctional maintenance test platform |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181123 |