CN204498039U - Wind power generation analog platform - Google Patents
Wind power generation analog platform Download PDFInfo
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- CN204498039U CN204498039U CN201520176203.6U CN201520176203U CN204498039U CN 204498039 U CN204498039 U CN 204498039U CN 201520176203 U CN201520176203 U CN 201520176203U CN 204498039 U CN204498039 U CN 204498039U
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Abstract
The utility model discloses a kind of wind power generation analog platform, described wind power generation analog platform comprises: tug unit, comprises two quadrant frequency converter and asynchronous motor; Generator unit, comprises four-quadrant frequency converter and asynchronous generator; Control unit, comprises programmable logic controller (PLC), communication ends and program debugging end; Test the speed unit, comprises speed encoder.By described program debugging end for described programmable logic controller provides Wind speed model, thus described switching value output module is according to the given described two quadrant frequency converter rotating speed of described Wind speed model or torque switching command, thus asynchronous motor described in described two quadrant Frequency Converter Control utilizes connecting axle to drag the generating of described asynchronous generator, realizing asynchronous motor replaces wind energy conversion system to provide mechanical energy, and then simulates wind power generation.
Description
Technical field
The utility model relates to wind power generation field, particularly relates to a kind of wind power generation analog platform.
Background technology
The regulation technology that in current world market, wind turbine is main has: fixed pitch regulating wind power machine technology, variable pitch regulating wind power machine technology, initiatively fixed pitch regulation technology, variable speed constant frequency four kinds.Because land wind turbine limits by conditions such as transport, installations, single-machine capacity 2MW is the limit of wind turbine development, and after this mainly reaches 2MW because of wind turbine capacity, blade length will reach 60-70m, land transportation is very difficult, and the crane capacity installed will more than 1200-1400t.The crane of this capacity, except except the developed regions such as America and Europe, all the other areas do not have substantially.Meanwhile, in developed regions such as West Europe, denser population, the place of installing wind turbine is subject to larger restriction, and people will greatly develop marine wind electric field.
Wind-force also faces some new problem and challenges while sending out fast development, outstanding behaviours is the grid-connected limitation problem of large-scale wind power and running of wind generating set integrity problem, mainly because wind energy resources and electricity market skewness weigh and the random intervals characteristic of wind energy resources and air-blower control technology is immature causes.Because intermittence is simultaneously with randomness, makes wind-force go out ammeter and reveal obvious uncertainty, therefore study wind power generation control technology particularly important, reduce wind-force and go out the develop rapidly that electric uncertainty will promote wind-powered electricity generation.
Study wind power generation control technology and need a large amount of experimental studies, yes that Wind turbines is placed in wind energy turbine set for experimental technique the most accurately, does the experiment of real wind-powered electricity generation.But foot, examines empty to following former sudden strain of a muscle, and real wind-powered electricity generation experiment is difficult to implement: (1) wind friction velocity cannot manual control.The experiment of some wind-powered electricity generation needs accidental special wind friction velocity, waits as long for experiment condition and must delay scientific research progress.(2) wind speed and direction random fluctuation, and not easily accurately measure.This can affect the data analysis of wind-powered electricity generation experiment.(3) the installation and maintenance cost of separate unit experiment blower fan is very high, the particularly research of large-scale wind electricity unit.(4) potential safety hazard is existed for jejune Control release.Above-mentioned factor makes most of wind-powered electricity generation study, and particularly wind-powered electricity generation controls research, and be difficult to carry out field experiment checking, therefore, most of laboratory cannot possess wind field environment or Wind turbines experiment condition.
Utility model content
The purpose of this utility model is to provide a kind of wind power generation analog platform reducing cost, improve wind power generation efficiency.
In order to solve the problems of the technologies described above, the utility model provides a kind of wind power generation analog platform, and wherein, described wind power generation analog platform comprises:
Tug unit, comprises two quadrant frequency converter and asynchronous motor, asynchronous motor speed torque change described in described two quadrant Frequency Converter Control;
Generator unit, comprises four-quadrant frequency converter and asynchronous generator, and described four-quadrant frequency converter controls described asynchronous generator and generates electricity by way of merging two or more grid systems or generate electricity from net, and described asynchronous generator is connected with connecting axle between asynchronous motor;
Control unit, comprise programmable logic controller (PLC), communication ends and program debugging end, described communication ends provides communication instruction for described programmable logic controller and program debugging end, described program debugging end provides Wind speed model for described programmable logic controller (PLC), described programmable logic controller comprises analog output module, switching value output module and central processing module, the given described asynchronous motor start and stop instruction of described central processing module and rotary speed instruction, described switching value output module given described two resembles frequency converter rotating speed or torque switching command, the given described asynchronous generator start and stop instruction of described switching value output module, the given described four-quadrant frequency converter frequency instruction of described analog output module,
Test the speed unit, comprises speed encoder, and described speed encoder records described connecting axle rotating speed, and tachometer value is provided to described central processing module.
Wherein, described asynchronous motor connects rotation speed gear box, promotes torque to reduce described connecting axle rotating speed.
Wherein, described program debugging end obtains given wind speed according to described Wind speed model, and according to the rotating speed that described speed encoder detects, calculate the Driving Torque of described asynchronous motor, and described Driving Torque is given to described two quadrant frequency converter by described switching value output module.
Wherein, described asynchronous motor arranges magnetic flux vector torque-controlling structures, described magnetic flux vector torque-controlling structures comprises flux regulator, current regulator, magnetic flux viewer and three-phase PWM, the given magnetic flux of described switching value output module is to described flux regulator, given torque is to described current regulator, described magnetic flux viewer detects described asynchronous motor threephase stator electric current and rotor speed, and calculate rotor flux and corner thereof, and given three-phase ac signal is to described three-phase PWM, described three-phase PWM controls the torque of described asynchronous motor vector.
Wherein, described four-quadrant frequency converter arranges three-phase PWM combining inverter.
Wherein, described three-phase PWM combining inverter comprises the outer voltage pi regulator connected successively, current inner loop pi regulator, voltage vector spatial operation device, three phase static coordinate-two-phase rotational right angle the coordinate converter of electric current and voltage and the static rectangular coordinates transformation device of current three-phase static coordinate-two-phase, described outer voltage pi regulator obtains given frequency from described analog output module, and given described space vector of voltage arithmetic unit voltage vector, described current inner loop pi regulator compensates described voltage vector, three phase static coordinate-two-phase rotational right angle the coordinate converter of electric current and voltage and the static rectangular coordinates transformation device of current three-phase static coordinate-two-phase convert voltage vector and current phasor.
Wherein, described two quadrant frequency converter comprises current sensor, and described current sensor detects the three-phase current vector of described asynchronous motor, and by given for three-phase current vector to described flux regulator.
Wherein, described communication ends and described program debugging end communication mode are Ethernet, and the communication mode of described communication ends and described programmable logic controller (PLC) is carry switch on described Ethernet.
Wherein, described programmable logic controller comprises power module, and described power module provides 24V DC power supply for described wind power generation analog platform.
Wherein, the communication mode of described programmable logic controller and described two quadrant frequency converter is local networking communications protocol.
Wind power generation analog platform of the present utility model, by described program debugging end for described programmable logic controller provides Wind speed model, thus described switching value output module is according to the given described two quadrant frequency converter rotating speed of described Wind speed model or torque switching command, thus asynchronous motor described in described two quadrant Frequency Converter Control utilizes connecting axle to drag the generating of described asynchronous generator, realizing asynchronous motor replaces wind energy conversion system to provide mechanical energy, and then simulate wind power generation, eliminate anemometer, become oarage, and various service equipment, reduce experimentation cost, and solve the stochastic backlash requirement of wind power generation.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical solution of the utility model, be briefly described to the accompanying drawing used required in execution mode below, apparently, accompanying drawing in the following describes is only execution modes more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of wind power generation analog platform of the present utility model;
Fig. 2 is the schematic diagram of vector torque-controlling structures of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model execution mode, the technical scheme in the utility model execution mode is clearly and completely described.
Refer to Fig. 1, a kind of wind power generation analog platform 100 that the utility model execution mode provides.Described wind power generation analog platform 100 comprises:
Tug unit 10, comprises two quadrant frequency converter 11 and asynchronous motor 12, and described two quadrant frequency converter 11 controls the change of described asynchronous motor 12 rotational speed and torque.
Generator unit 20, comprises four-quadrant frequency converter 21 and asynchronous generator 22, and described four-quadrant frequency converter 21 controls described asynchronous generator 12 and generates electricity by way of merging two or more grid systems or generate electricity from net, and described asynchronous generator 22 is connected with connecting axle 1 between asynchronous motor 12.
Control unit 30, comprise programmable logic controller (PLC) 31, communication ends 32 and program debugging end 33, described communication ends 32 provides communication instruction for described programmable logic controller 31 and program debugging end 33, and described program debugging end 33 provides Wind speed model for described programmable logic controller (PLC) 31.
Described programmable logic controller 31 comprises analog output module 311, switching value output module 312 and central processing module 313.The given described asynchronous motor start and stop instruction of described central processing module 313 and rotary speed instruction, described switching value output module 312 given described two resembles frequency converter 11 rotating speed or torque switching command, the given described asynchronous generator 22 start and stop instruction of described switching value output module 312, given described four-quadrant frequency converter 21 frequency instruction of described analog output module 311.
Test the speed unit 40, comprises speed encoder 41, and described speed encoder 41 records described connecting axle 1 rotating speed, tachometer value is provided to described central processing module 313.
There is provided Wind speed model by described program debugging end 33 for described programmable logic controller 31, control described asynchronous motor 12 and drag described asynchronous generator 22 and generate electricity.Realizing asynchronous motor 12 replaces wind energy conversion system to provide mechanical energy, and then simulates wind power generation.
In present embodiment, described two quadrant frequency converter 11 is Schneider Altivar 71 Series Frequency Converter.Described two quadrant frequency converter 11 has different Electric Machine Control types and a large amount of build-in functions, can meet various requirement.The torque when controlling described asynchronous motor 12 extremely low speed of described two quadrant frequency converter 11 raises, and has the accuracy of speed simultaneously.The magnetic flux vector control of described two quadrant frequency converter 11 can realize high dynamic performance.The frequency range that described two quadrant frequency converter 11 expands, is applicable to high-speed electric expreess locomotive and drives.Described two quadrant frequency converter 11 provides voltage frequency ratio control mode, and motor special and frequency converter can be driven to be connected in parallel.Described two quadrant frequency converter 11 synchronous machine control mode in an open loop mode, can improve static velocity precision, and realize electricity-saving function.Described two quadrant frequency converter 11 is provided with the adaptation function of the motor control algorithm driving unbalanced load machinery, and uneven machine can be made to operate steadily.In other embodiments, described two quadrant frequency converter can also be universal frequency converter.
In present embodiment, described asynchronous motor 12 is squirrel-cage asynchronous motor, the rated power 4KW of described asynchronous motor 12, rated voltage 380V, rated current 8.9A, maximum (top) speed 1800rpm, rotor inertia 0.015Kgm
2.
In present embodiment, described four-quadrant frequency converter 21 is general ACS800-11 Series Frequency Converter.AI1+ and All-of described four-quadrant frequency converter 21 is analog quantity rotary speed instruction input, and be connected with described analog output module 311, excursion is 0 ~ 20mA direct current.AOl+ and AO1-of described four-quadrant frequency converter 21 is analog output ends, be connected with the Analog input mModule 314 of described programmable logic controller 31, there is provided the tach signal of described asynchronous generator 22 to described central processing module 313, excursion is 0 ~ 20mA.AO2+ and AO2-of described four-quadrant frequency converter 21 is analog output ends, is connected with described Analog input mModule 314, and provide the stator current of described asynchronous generator 22 to described central processing module 313, excursion is 0-20mA.The DI1 of described four-quadrant frequency converter 21 is connected with the digital output module 315 of programmable logic controller 31, for controlling the start-stop of described four-quadrant frequency converter 21.The rotor direction of rotation that described four-quadrant frequency converter 21 controls described asynchronous generator 22 is always rotating forward.In other embodiments, described four-quadrant frequency converter can also be ACS800-04 series.
In present embodiment, described programmable logic controller 31 is Modicon M340 PLC(Programmable Logic Controller).Described programmable logic controller 31 has remarkable operational capability and multiple task operating system, supports 64 high priority tasks.In other embodiments, described programmable logic controller can also be IZE BMXAMI0800 model.
In present embodiment, described communication terminal 32 is touch-screen, is equivalent to guidance panel, to realize human-computer interaction function, increases communication instruction input mode.Described communication terminal 32 communicates with described program debugging terminal 33, downloads and debugging routine to realize described program debugging end 33, and realizes the swap data of described program debugging terminal 33 and described programmable logic controller 31.In other embodiments, described communication terminal can also be operation keyboard.
In present embodiment, described program debugging end 33 is computer, and the Main Function of described program debugging terminal 33 is detail programmings, and utilizes configuration software to realize the supervision effect of data.
Further, described asynchronous motor 12 connects rotation speed gear box 13, promotes torque to reduce described connecting axle 1 rotating speed.
When the rated speed of described asynchronous motor 12 is 1500rpm, when power is 4kW, nominal torque is 26.7Nm.Compared with real feature of wind machine, the rotating speed of described asynchronous motor 12 is higher, and torque is lower.Therefore, need gear box to reduce rotating speed, and raise Driving Torque.Therefore the speed reducing ratio arranging described rotation speed gear box 13 is 5:1.Thus the output speed of described asynchronous motor 12 can be reduced to 300rpm, and to improve Driving Torque be 95. 5Nm.When given wind speed is lower, the equal proportion that can realize described asynchronous motor 12 rotary speed property and true wind energy conversion system is simulated.
Further, described program debugging end 33 obtains given wind speed according to described Wind speed model, and according to the rotating speed that described speed encoder 41 detects, calculate the Driving Torque of described asynchronous motor 12, and described Driving Torque 12 is given to described two quadrant frequency converter 11 by described switching value output module 312.
Concrete, described program debugging end 33 writes wind energy conversion system model and Wind speed model to described central processing module 313, and according to user by the given wind speed of described communication terminal 32 extremely described central processing module 313, described speed encoder 41 is detected that the output speed of described rotation speed gear box 13 is provided to described central processing module 313 simultaneously.Described central processing module 313 calculates the torque that now wind energy conversion system really should export, and after real wind energy conversion system torque and gearbox speed reduction ratio being compared, the torque as described asynchronous motor 12 is given, sends into described two quadrant frequency converter 11.Described asynchronous motor 12 is driven to run according to this torque by described two quadrant frequency converter 11, the torque of described rotation speed gear box 13 output of coaxial connection is the torque characteristics now of the true wind energy conversion system that will simulate, and achieves the simulation of the torque characteristics of wind energy conversion system.
Further, refer to Fig. 2, described asynchronous motor 12 arranges magnetic flux vector torque-controlling structures 120, and described magnetic flux vector torque-controlling structures 120 comprises flux regulator 121, current regulator 122, magnetic flux viewer 123 and three-phase PWM 124.The given magnetic flux of described switching value output module 312 is to described flux regulator 121, given torque is to described current regulator 122, described magnetic flux viewer 123 detects described asynchronous motor 12 threephase stator electric current and rotor speed, and calculate rotor flux and corner thereof, and given three-phase ac signal is to described three-phase PWM 124, described three-phase PWM 124 controls the torque of described asynchronous motor 12 vector.
Concrete, by the reasonable linear combination of the electronic technology known three phase inverter bridge utilizing PWM to control six space vectors and two zero vectors, the stator flux of motor needed for just can obtaining arbitrarily, this technology becomes space vector technique.
Described two quadrant frequency converter 11 comprises current sensor 111, and described current sensor 111 detects the three-phase current vector of described asynchronous motor 12, and by given for three-phase current vector to described flux regulator 123.Described magnetic flux vector torque-controlling structures 120 also comprises current phasor 3/2 converter 125 and current phasor 2/3 inverse converter 126.Three-phase ac signal in three phase coordinate system A-B-C of described asynchronous motor 12 is provided to described current phasor 3/2 converter by described current sensor 111, the direct current signal that three-phase ac signal transforms in two-phase rotational right angle coordinate system d-q by described current phasor 3/2 converter again carries out computing, and provides two-phase direct current signal to described current regulator 122.Described two-phase direct current signal is provided to described current phasor 2/3 inverse converter 126 by described current regulator 122, and the contravariant of described two-phase direct current signal is changed into three-phase ac signal to form the control to described three-phase PWM 124 by described current phasor 2/3 inverse converter 126 again.
The basic meaning of motor vector control is, to produce same rotating mmf for criterion, stator current on three phase coordinate systems passes through vector, equivalence can become direct current id and iq on synchronous rotating frame, the equivalence of rotor total magnetic flux can be become the magnetic flux W of DC motor, and d axle is positioned on the direction of magnetic flux W, be referred to as M (Magenetization) axle; Q axle is referred to as T (Torque) axle.Then M axle winding is equivalent to the excitation winding of direct current machine, and L is equivalent to exciting current, and T axle winding is equivalent to armature winding, and ti is equivalent to the armature supply be directly proportional to torque.This makes it possible to three phase alternating current motor to be become direct current machine such, can control respectively by excitation and armature, greatly simplifie motor model and control complexity.The key link of motor vector control is rotor flux viewer, and the effect of magnetic flux viewer is by detecting threephase stator electric current and rotor speed, calculating rotor flux and corner (with the angle of A axle) thereof.In motor vector control system, normally maintaining rotor flux given constant, changing motor running condition by changing iq*.If speed closed loop controls, then iq* is formed by the output of der Geschwindigkeitkreis; If direct torque, then iq* by torque to being shaped as.
Further, described four-quadrant frequency converter 21 arranges three-phase PWM combining inverter 210.Concrete, as described in Figure, described three-phase PWM combining inverter 210 comprises three phase static coordinate-two-phase rotational right angle coordinate converter 214 and the static rectangular coordinates transformation device 215 of current three-phase static coordinate-two-phase of outer voltage pi regulator 211, current inner loop pi regulator 212, voltage vector spatial operation device 213, electric current and the voltage connected successively.Described outer voltage pi regulator 211 obtains given frequency from described analog output module 311, and given described space vector of voltage arithmetic unit 213 voltage vector.Described current inner loop pi regulator 211 compensates described voltage vector.Three phase static coordinate-two-phase rotational right angle the coordinate converter 214 of described electric current and voltage and the static rectangular coordinates transformation device of current three-phase static coordinate-two-phase 215 pairs of voltage vectors and current phasor convert.
Further, described communication ends 32 is Ethernet with the communication mode of described program debugging end 33, and described communication ends 32 is carry switch on described Ethernet with the communication mode of described programmable logic controller (PLC) 31.
Concrete, the Basic Topological of described Ethernet comprises application layer, network and transport layer, data link layer and physical layer, and each functional module of described application layer services, sends message in real time by various protocols.Described network and transport layer arrange various protocols.Described data link layer realizes networking access.Described physical layer realizes topological structure.
Further, described programmable logic controller 31 comprises power module 316, and described power module 316 provides 24V DC power supply for described wind power generation analog platform 100.
Further, described programmable logic controller 31 is local networking communications protocol with the communication mode of described two quadrant frequency converter 11.
Wind power generation analog platform of the present utility model, by described program debugging end for described programmable logic controller provides Wind speed model, thus described switching value output module is according to the given described two quadrant frequency converter rotating speed of described Wind speed model or torque switching command, thus asynchronous motor described in described two quadrant Frequency Converter Control utilizes connecting axle to drag the generating of described asynchronous generator, realizing asynchronous motor replaces wind energy conversion system to provide mechanical energy, and then simulate wind power generation, eliminate anemometer, become oarage, and various service equipment, reduce experimentation cost, and solve the stochastic backlash requirement of wind power generation.
The above is preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection range of the present utility model.
Claims (10)
1. a wind power generation analog platform, is characterized in that, described wind power generation analog platform comprises:
Tug unit, comprises two quadrant frequency converter and asynchronous motor, asynchronous motor speed torque change described in described two quadrant Frequency Converter Control;
Generator unit, comprises four-quadrant frequency converter and asynchronous generator, and described four-quadrant frequency converter controls described asynchronous generator and generates electricity by way of merging two or more grid systems or generate electricity from net, and described asynchronous generator is connected with connecting axle between asynchronous motor;
Control unit, comprise programmable logic controller (PLC), communication ends and program debugging end, described communication ends provides communication instruction for described programmable logic controller and program debugging end, described program debugging end provides Wind speed model for described programmable logic controller (PLC), described programmable logic controller comprises analog output module, switching value output module and central processing module, the given described asynchronous motor start and stop instruction of described central processing module and rotary speed instruction, described switching value output module given described two resembles frequency converter rotating speed or torque switching command, the given described asynchronous generator start and stop instruction of described switching value output module, the given described four-quadrant frequency converter frequency instruction of described analog output module,
Test the speed unit, comprises speed encoder, and described speed encoder records described connecting axle rotating speed, and tachometer value is provided to described central processing module.
2. wind power generation analog platform according to claim 1, is characterized in that, described asynchronous motor connects rotation speed gear box, promotes torque to reduce described connecting axle rotating speed.
3. wind power generation analog platform according to claim 2, it is characterized in that, described program debugging end obtains given wind speed according to described Wind speed model, and according to the rotating speed that described speed encoder detects, calculate the Driving Torque of described asynchronous motor, and described Driving Torque is given to described two quadrant frequency converter by described switching value output module.
4. wind power generation analog platform according to claim 3, it is characterized in that, described asynchronous motor arranges magnetic flux vector torque-controlling structures, described magnetic flux vector torque-controlling structures comprises flux regulator, current regulator, magnetic flux viewer and three-phase PWM, the given magnetic flux of described switching value output module is to described flux regulator, given torque is to described current regulator, described magnetic flux viewer detects described asynchronous motor threephase stator electric current and rotor speed, and calculate rotor flux and corner thereof, and given three-phase ac signal is to described three-phase PWM, described three-phase PWM controls the torque of described asynchronous motor vector.
5. wind power generation analog platform according to claim 4, is characterized in that, described four-quadrant frequency converter arranges three-phase PWM combining inverter.
6. wind power generation analog platform according to claim 5, it is characterized in that, described three-phase PWM combining inverter comprises the outer voltage pi regulator connected successively, current inner loop pi regulator, voltage vector spatial operation device, three phase static coordinate-two-phase rotational right angle the coordinate converter of electric current and voltage and the static rectangular coordinates transformation device of current three-phase static coordinate-two-phase, described outer voltage pi regulator obtains given frequency from described analog output module, and given described space vector of voltage arithmetic unit voltage vector, described current inner loop pi regulator compensates described voltage vector, three phase static coordinate-two-phase rotational right angle the coordinate converter of electric current and voltage and the static rectangular coordinates transformation device of current three-phase static coordinate-two-phase convert voltage vector and current phasor.
7. wind power generation analog platform according to claim 6, it is characterized in that, described two quadrant frequency converter comprises current sensor, and described current sensor detects the three-phase current vector of described asynchronous motor, and by given for three-phase current vector to described flux regulator.
8. wind power generation analog platform according to claim 1, it is characterized in that, described communication ends and described program debugging end communication mode are Ethernet, and the communication mode of described communication ends and described programmable logic controller (PLC) is carry switch on described Ethernet.
9. wind power generation analog platform according to claim 1, is characterized in that, described programmable logic controller comprises power module, and described power module provides 24V DC power supply for described wind power generation analog platform.
10. wind power generation analog platform according to claim 1, is characterized in that, the communication mode of described programmable logic controller and described two quadrant frequency converter is local networking communications protocol.
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| CN201520176203.6U CN204498039U (en) | 2015-03-27 | 2015-03-27 | Wind power generation analog platform |
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| CN201520176203.6U CN204498039U (en) | 2015-03-27 | 2015-03-27 | Wind power generation analog platform |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682809A (en) * | 2015-03-27 | 2015-06-03 | 许昌学院 | Wind power generation simulation platform |
| US10707789B2 (en) | 2017-05-12 | 2020-07-07 | General Electric Company | Adaptive current damping module for improved power converter control in wind turbine systems |
-
2015
- 2015-03-27 CN CN201520176203.6U patent/CN204498039U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682809A (en) * | 2015-03-27 | 2015-06-03 | 许昌学院 | Wind power generation simulation platform |
| US10707789B2 (en) | 2017-05-12 | 2020-07-07 | General Electric Company | Adaptive current damping module for improved power converter control in wind turbine systems |
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Granted publication date: 20150722 Termination date: 20160327 |