CN103023407A - A wind power generation system - Google Patents
A wind power generation system Download PDFInfo
- Publication number
- CN103023407A CN103023407A CN2012102700409A CN201210270040A CN103023407A CN 103023407 A CN103023407 A CN 103023407A CN 2012102700409 A CN2012102700409 A CN 2012102700409A CN 201210270040 A CN201210270040 A CN 201210270040A CN 103023407 A CN103023407 A CN 103023407A
- Authority
- CN
- China
- Prior art keywords
- electric power
- angle
- pitch
- cooling
- command value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
Landscapes
- Control Of Eletrric Generators (AREA)
- Wind Motors (AREA)
Abstract
A wind power generation system is provided. The system controls generated power of a generator via an electric power converter. When the electric power transmitted by the electric power converter is limited because the reduced cooling capability performing cooling on the electric power converter, variable control can be performed by the angle of pitch of blades so that input energy from the blades corresponding to the electric power which can be transmitted is controlled. Over rotation of the blades and faults of the electric power converter can be prevented. The system comprises cooling capability to the cooling system or comprises a transverter, a cooling capability detecting portion detecting the cooling state of the electric converter of the inverter, and an angle of pitch instruction correcting portion correcting the angle of pitch instruction via an angle of pitch instruction calculating portion. According to the detected result of the cooling capability detecting portion, the angle of pitch instruction correcting portion corrects the angle of pitch instruction and executes variable control instruction on the angel of pith of the blades according to the corrected angle of pitch instruction.
Description
Technical field
The present invention relates to related with electric power system and from using generator to generate electricity based on the input energy of wind-force, and use electric power converter to convert described generation power to the electric power of expectation and the wind generator system that transmits electric power to described electric power system.
Background technology
In recent years, in order to improve the generating efficiency of wind generator system, use the electric power converter that is called inverter or converter to make the variable speed wind power generation system of generator variable-ratio ground running become main flow.
The energy transfer part of this variable-ratio windmill system comprises: the blade that wind energy is converted to rotating energy, the rotating energy that will obtain by this blade is to the axle as the gear transmission of speed increaser, the gear that is connected with this shaft mechanical, be connected and rotating energy be converted to the generator of electric power with this gear mechanism, the output frequency of this generator is converted to the electric power converter of the frequency of associated electric power system, the transformer that the alternating electromotive force that is converted to commercial frequency by this electric power converter is boosted and transmit electric power to electric power system.
From wind, obtain the input energy suitable with the rated value of this wind generator system at this wind generator system, and when the electric power that causes because of certain reason carrying from this electric power converter to associated electric power system is restricted, wind energy as the input energy produces difference with the electrical energy of exporting to electric power system, may turn because this energy difference causes the rotating speed increase of blade to become overwinding.
What the electric power that electric power converter is carried to system was the system voltage of relating dot with the electric current that flows in system is long-pending.In the situation of the systematic failures such as generation earth fault, this system voltage is lower than rated value.For electric power converter, usually, because the above electric current of rated current that can't continue to flow, thereby at the systematic failures tempus continuum, the electric power that can carry of electric power converter is restricted to below the rated value.Therefore, when when wind generator system systematic failures occurs under with the state that generates electricity near the mode of its rated value, blade may become rotation.
In patent documentation 1; following method is disclosed; namely; in the situation of the accident that detects electric power system; the angle of pitch of windmill becomes the input energy that makes wind along slurry (feather) state and reduces, and prevents from flowing into to electric power converter simultaneously the method for overcurrent by closed overvoltage crowbar.
In addition, following technology is disclosed in patent documentation 2, namely, by in power system accident continuation process, suitably controlling the angle of pitch, thereby the blade rotary speed in the systematic failures continuation process is remained in the scope that turns round of this wind generator system rapidly again generating after detecting systematic failures and being removed.
[formerly technical literature]
[patent documentation]
[patent documentation 1] WO2004/067958
No. 4501958 communique of [patent documentation 2] patent
Above-mentioned known technology is the solution countermeasure of phenomenon that causes obtaining the rated electrical of wind generator system for the reason because of system side.On the other hand, not the reason because of system side, but because the reason of electric power converter itself causes and the rated electrical of wind generator system also can't be existed to the phenomenon that system carries.
Particularly, what can expect is to cause tripping operation because the electric power converter environment temperature rises.Environment temperature at this electric power converter is high in the situation more than the operating temperature range of this electric power converter, can't obtain sufficient cooling capacity to electric power converter, thereby the temperature of the parts of electric power converter inside (thyristor, reactor etc.) becomes the above high temperature of design load, thereby may break down.
Fault for fear of electric power converter; what can expect is following electric power converter guard method; namely; detect the part temperatures of electric power converter inside; when detecting the abnormal ascending of this part temperatures, stop this electric power converter, but this makes this electric power converter stop not change aspect the generating.
If because the temperature anomaly of electric power converter causes this electric power converter tripping operation or stops generating, then the input energy of wind generator system is accumulated as the rotary body rotating energy of blade etc., thus rise of rotational speed and finally may cause blade to become rotation.
The electric power converter environment temperature rises different from the system side reason, crosses rotation for fear of blade, needs new countermeasure mechanism.
Summary of the invention
Problem of the present invention provides following wind generator system, namely, when causing the electric power that to carry of electric power converter to be restricted because of the cooling capacity reduction that described electric power converter is cooled off, the input energy from blade corresponding with the described electric power that can carry controlled, thereby prevented that crossing of described blade from rotating and described electric power converter breaks down.
Wind generator system as the means that are used for problem of the present invention has: converter, and the generation power of the variable frequency that it will be exported from the synchronous generator that is connected with the variable blade mechanism of the angle of pitch is converted to direct current power; Smmothing capacitor, the direct current power smoothing that it exports described converter; Inverter, it is electrically connected with electric power system, via described smmothing capacitor described direct current power is converted to the alternating electromotive force of fixed frequency from described converter, and to described electric power system output; Angle of pitch command value calculating section, it calculates the angle of pitch command value be used to the variable control of the angle of pitch that carries out described blade, and carries out the described angle of pitch is implemented the instruction that mechanical type is adjusted according to described angle of pitch command value; Cooling system, it cools off described converter and described inverter, described wind generator system is characterised in that, also possess: the cooling capacity test section, it detects the cooling capacity of described cooling system or the state of cooling of electric power converter, and this electric power converter comprises described converter and described inverter; Angle of pitch command value correction portion, it is revised the described angle of pitch command value of utilizing described angle of pitch command value calculating section to calculate, testing result according to described cooling capacity test section, described angle of pitch command value correction portion is revised described angle of pitch command value, and carries out the angle of pitch of described blade is implemented the instruction of variable control according to described revised angle of pitch command value.
Wind generator system as the means that are used for problem of the present invention has: generator, and it is connected with the variable blade mechanism of the angle of pitch; Electric power converter, it will be converted to from the generation power of described generator output alternating electromotive force or the direct current power of assigned frequency; Angle of pitch command value calculating section, it is calculated for the angle of pitch command value that the angle of pitch of described blade is controlled, and carry out the described angle of pitch is implemented the instruction that mechanical type is adjusted, described wind generator system is characterised in that, also possess: the cooling capacity test section, it detects the cooling capacity of described cooling system or the state of cooling of electric power converter, and this electric power converter comprises described converter and described inverter; Angle of pitch command value correction portion, it is revised the described angle of pitch command value of utilizing described angle of pitch command value calculating section to calculate, testing result according to described cooling capacity test section, described angle of pitch command value correction portion is revised described angle of pitch command value, and carries out the angle of pitch of described blade is implemented the instruction of variable control according to described revised angle of pitch command value.
[invention effect]
Carry out variable control by the angle of pitch to described blade, thereby can be under the state that the running of electric power coversion system is proceeded according to the electric power that can the carry control of the described electric power converter input energy from described blade, thereby can prevent described blade cross rotation in prevent that described electric power converter from breaking down.
Description of drawings
Fig. 1 is the overall structure key diagram of the wind generator system of first embodiment of the invention.
Fig. 2 is the control system key diagram of the wind generator system of first embodiment of the invention.
Fig. 3 is the electric power switching controller key diagram of first embodiment of the invention.
Fig. 4 is that the cooling capacity of the cooling capacity detector 3000 of first embodiment of the invention detects chart.
Fig. 5 is upper control device 1000 and the angle of pitch corrector 6000 operation blocks key diagrams of first embodiment of the invention.
Fig. 6 is other execution mode key diagrams of first embodiment of the invention.
Fig. 7 is other execution mode key diagrams of first embodiment of the invention.
Fig. 8 is other execution mode key diagrams of first embodiment of the invention.
Fig. 9 is other execution mode key diagrams of first embodiment of the invention.
Figure 10 is the action waveforms key diagram of first embodiment of the invention.
Figure 11 is electric power converter and the cooling system key diagram of the wind generator system of second embodiment of the invention.
Figure 12 is the control system key diagram of the wind generator system of second embodiment of the invention.
Figure 13 is the control system key diagram of the wind generator system of third embodiment of the invention.
Figure 14 is the control system key diagram of the wind generator system of fourth embodiment of the invention.
Figure 15 is the control system key diagram of the wind generator system of fifth embodiment of the invention.
Figure 16 is the key diagram that carries out the front and back state of variable control about the angle of pitch to blade 10 of the present invention.
[symbol description]
1 wind generator system
2 electric power systems
3 cooling systems
10 blades
11 pivot hubs
12 angle of pitch adjusters
13 axles
14 gears
15 generators
20 electric power converters
21 converters
21up、21un、21vp、21vn、21wp、21wn、22up、22un、
22vp, 22vn, 22wp, 22wn thyristor
21fil, 22fil high frequency filter
22 inverters
The 22cdc smmothing capacitor
23 electromagnetic contactors
24 electric power converter air intakes
25,26 cables
30 transformers
40 heat exchangers
41 pumps
50 cooling fans
60 enging cabins
70 towers
80 wind
81 weathers
82 leewards
83 lift
84 surfacess of revolution
85 blade angles
86,87 angles of pitch
100,101 AC voltage sensor
102 direct current voltage sensors
103,104 current sensors
200 temperature sensors
201 anemobiagraphs
300,6002 addometers
1000 upper control devices
2000 electric power switching controllers
3000 cooling capacity detectors
6000 angle of pitch correctors
6001 multipliers
10000 frameworks
10001 rotary speed ordering calculation devices
10002 rotary speed controllers
20001 active power controllers
20002 terminal voltage controllers
20003 dynamo current controllers
20004 dc voltage controllers
20005 inverter current controllers
20006 electric power are calculated device
20007,20008PWM controll block
20009,20010 phase detectors
Embodiment
Below, use the description of drawings embodiments of the invention.Need to prove, in each accompanying drawing of explanation embodiment, for the identical symbol of key element mark with identical function.In addition, shown in Figure 13 etc. be arranged on the same cooling fin and by IGBT be called thyristor 21m～21r, 22m～22r with body 21m～21r arranged side by side and 22m～22r that diode that this IGBT oppositely is connected side by side consists of.
[embodiment 1]
The example of the wind generator system 1 when in the present embodiment, illustrating by the water quench electric power converter.
The wind generator system 1 of present embodiment is converted to electric power by the generator that possesses blade and permanent magnet with wind energy, and this electric power is converted to commercial frequency and transmits electric power to electric power system by electric power converter.
Fig. 1 illustrates the structure example of the wind generator system 1 of present embodiment.
On the top of enging cabin 60 anemobiagraph 201 is set, the output of this anemobiagraph 201 is to upper control device 1000 inputs described later.Electric power converter 20 is the water-cooled electric power converters by water quench, and it is connected with the cooling system 3 that cooling water is cooled off via cooling water pipe.
Below, the action of wind generator system 1 is described.
The rotor of generator 15 possesses permanent magnet, by this rotor the magnetic flux that connects with stator winding magnetic is changed, from produce the induction power that exchanges stator winding.
Utilize the angle of pitch adjustment of blade 10 that the input torque from wind is adjusted, adjust the angle of pitch for the rotary speed that makes blade becomes the rotary speed command value corresponding with wind speed by upper control device 1000 described later.
Use Fig. 2 that the control system of wind generator system 1 and the detailed content of electric power converter 20 are described.
The generation power value P that upper control device 1000 is calculated with output v and the electric power switching controller 2000 of anemobiagraph 201 and blade rotary angular velocity omega are as input, thus the output angle of pitch
Generation power command value Pref with electric power converter 20.
The angle of pitch instruction of calculating by upper control device 1000
Be input in the angle of pitch reconditioner 12 via the angle of pitch corrector 6000 as novel point of the present invention, angle of pitch reconditioner 12 is adjusted the angle of pitch of blade 10 according to the angle of pitch instruction after adjusting.
The generation power instruction Pref that calculates by upper control device 1000 is input to electric power switching controller 2000.Electric power switching controller 2000 is controlled converter 21 with electric power converter 20 from the active power mode consistent with above-mentioned generation power instruction that generator 15 obtains.
Below, describe electric power converter 20 in detail.
The main circuit of electric power converter 20 comprises: converter 21, inverter 22, smmothing capacitor 22cdc, high frequency filter 21fil, 22fil.Converter 21 has following function: the function of the idle current that obtains from generator according to the function of the electric power that is obtained from generator 15 by the generation power instruction Pref control of upper control device 1000 output, control.Inverter 22 possesses following function: according to the direct voltage command value control smmothing capacitor 22cdc voltage between terminals as fixed value, the function that the generation power of the generator 15 that thus converter 21 is obtained is carried to electric power system 2; Control is to the function of the idle current of electric power system 2 outputs.
Below, the structure of the major part of converter 21, inverter 22 is described.
In the present embodiment, with the situation explanation converter 21 of the IGBT transducer of 6 arm configurations, the structure of inverter 22.IGBT element 21m～21r, 22m～22r consist of respectively the arm of converter 21 and inverter 22.From electric power switching controller 2000 to the grid input gate drive signal as the control electrode of each IGBT element 21m～21r, 22m～22r.Make each IGBT element switch by the gate drive signal after the input PWM modulation, thereby the interchange output power of generator 15 is converted to direct current power, this direct current power is converted to the alternating electromotive force of electric power system 2 outputs.
The output current of generator 15 is determined according to poor, the leakage inductance that is in generator 15 therebetween of generator induced voltage and converter 21 output voltages and the inductance of high frequency filter 21fil.This output current is converted to direct current by converter 21, and smmothing capacitor 22cdc is by this direct current charging.
Output current to electric power system 2 output is definite with the impedance poor, high frequency filter 22fil of the output voltage of inverter 22 according to the relating dot system voltage of electric power system 2.This output current transfers alternating current by the switch of inverter 22 to from direct current, and inverter 22 is by making smmothing capacitor 22cdc discharge to system's output active power.
The breakage of rising and to cause for fear of said temperature, the wind generator system 1 of present embodiment possesses cooling system 3, by the heat that utilizes the water quench supplied with by cooling system 3 to produce because of the loss of above-mentioned IGBT element, high frequency filter, thereby the temperature that suppresses above-mentioned IGBT element, high frequency filter rises.
In the process that above-mentioned cooling water flows in the water route in the cooling fin of above-mentioned IGBT element and high frequency filter, obtain and the temperature of above-mentioned IGBT element, high frequency filter and the poor corresponding heat of this cooling water temperature.By pump 41 cooling water is carried from converter 21 or inverter 22 heat exchanger 40.At this moment, the temperature of this cooling water rises because of the heat that obtains from above-mentioned IGBT element or high frequency filter, and it is higher than extraneous gas temperature that its temperature becomes.Heat exchanger 40 is by cooling off this cooling water with the ambient air of this heat exchanger 40 to the pipe arrangement ejection that this cooling water flowed.Cooling water by heat exchanger 40 cooling flows in the IGBT element of converter 21 and inverter 22, high frequency filter again; cool off thus this IGBT element, high frequency filter, thereby protect this IGBT element, High frequency filter to make it avoid producing destruction because excessive temperature rises.
To electric power switching controller 2000 input: ac voltage Vgu, the Vgv, Vgw, Vsu, Vsv, the Vsw that are detected by AC voltage sensor 100/101; The alternating current flow valuve Igu, Igv, Igw, Isu, Isv, the Isw that are detected by current sensor 103,104; The dc voltage value Vdc that is detected by direct current voltage sensor 102.
Electric power switching controller 2000 is calculated the electric power that obtains from generator 15 according to above-mentioned ac voltage, alternating current flow valuve, and so that this alternating electromotive force detected value mode consistent with the electric power command value of obtaining from upper control device 1000 adjusted the alternating voltage of converter 21.
Use Fig. 3 that the detailed construction of electric power switching controller 2000 is described.
At first, calculate device 20006 by this electric power and calculate the active power Pg that obtains from generator 15.In active power controller 20001, obtain the deviation of above-mentioned electric power command value and described active power value of calculating, and carry out the PI computing so that this deviation becomes zero mode, thereby calculate the effective current command value Idref that converter 21 flows to generator 15.The phase detectors 20009 that the induction power phase place of generator 15 is detected with generator terminal voltage detecting value Vgu, Vgv, Vgw as input, calculate the phase estimating value θ g of induced voltage and the angular velocity of rotation presumed value ω of blade 10, this phase estimating value θ g is to 20003 outputs of dynamo current controller.The active power value of the calculating Pg that obtains from generator 15 and the angular velocity of rotation presumed value ω of blade 10 level controller 1000 outputs that make progress.
Dynamo current controller 20003 input effective current command value Idref, idle current command value Iqref, dynamo current detected value Igu, Igv, Igw, then input phase presumed value θ g, (be zero at this) mode consistent with the alternating current detected value that obtains from generator 15 so that the idle current command value Iqref of effective current command value Idref and regulation, calculate the deviation of above-mentioned current detection value and dynamo current command value at dynamo current controller 20003, and become zero mode with this deviation and move the PI computing, thereby determine generator top-cross stream voltage instruction value and with this voltage instruction value as modulating wave to 20007 inputs of PWM controll block.20007 pairs of these modulating waves of PWM controll block and carry ripple to compare, and make gate drive signal and to each grid output of IGBT element 21m～21r.
The mode that electric power switching controller 2000 is controlled to setting with the voltage between terminals with smmothing capacitor 22cdc is adjusted the alternating voltage of inverter 22.
Particularly, at first, detect the voltage between terminals of smmothing capacitor 22cdc by direct current voltage sensor 102.In dc voltage controller 20004, obtain the deviation of afore mentioned rules value and smmothing capacitor 22cdc voltage between terminals detected value, carry out the PI computing so that this deviation becomes zero mode, thereby calculate inverter 22 to the effective current command value Idref of electric power system 2 outputs.
Inverter current controller 20005 take the idle current command value Iqref of the effective current command value Idref that calculated by dc voltage controller 20004, regulation (at this as zero), to the alternating current detected value of electric power system 2 outputs, from the system voltage phase theta s of phase detectors 20010 outputs as input.Inverter current controller 20005 is so that this current instruction value and deviation from system power command value to the consistent mode of the AC system detected value of electric power system 2 outputs that calculate above-mentioned current detection value and, so that becoming zero mode, this deviation carries out the PI computing, thereby determine system side alternating voltage command value, and this voltage instruction value is inputted to PWM controll block 20008 as modulating wave.20008 pairs of these modulating waves of PWM controll block and carry ripple to compare, and make gate drive signal and to each grid output of IGBT element 22m～22r.
Below, prevent that to crossing rotation as blade novel point of the present invention, that utilize the angle of pitch correction carried out according to the temperature detection value Tamb as the output of temperature sensor 200 to realize mechanism from describing.
The cooling capacity of the cooling water in the heat exchanger 40 exists with ... the poor of the cooling water temperature of heat exchanger 40 entrances of cooling water and extraneous gas temperature, if the extraneous gas temperature is high, then cooling water can't fully cool off.If can't be fully with water quench, then the cooling water temperature of heat exchanger 40 outlets uprises, and the result causes the cooling capacity to above-mentioned IGBT element, high frequency filter of cooling system 3 to reduce.
Of the present inventionly cross rotation and prevent that mechanism from comprising: the temperature sensor 200 that the reduction of the cooling capacity of cooling system 3 is detected indirectly, detect cooling capacity detector 3000 and the angle of pitch corrector 6000 of cooling capacity according to the output of this temperature measurement unit.This cross rotation prevent mechanism when the cooling capacity of cooling system 3 reduces with the angle of pitch to along the adjustment of slurry side, thereby restriction is based on the input energy of wind.Thus, even in the situation that electric power converter 20 can be restricted to the electric power that electric power system 2 is carried, because input energy based on wind is reduced to below the energy that electric power converter 20 can carry, thus can prevent the rotation of crossing of blade.
Below, the blade of present embodiment is crossed rotation prevent that mechanism is elaborated.
The cooling capacity for Tamb that cooling capacity detector 3000 possesses as shown in Figure 4 detects chart.That is, from the input Tamb of temperature sensor 200 than the high situation of the value t1 of regulation under, cooling capacity detector 3000 has the output that makes this detecting unit with respect to the characteristic of input Tamb monotone decreasing.
At this, the output Δ S of cooling capacity detector 3000 is equivalent to the reduction amplitude of the electric power that electric power converter 20 can carry to electric power system 2.The output signal of this cooling capacity detector 3000 is to 6000 inputs of angle of pitch corrector.
6000 inputs of angle of pitch corrector are from the angle of pitch instruction of upper control device 1000
The output Δ S of cooling capacity detector 3000 is with revised angle of pitch instruction
To 12 outputs of angle of pitch reconditioner.
Use Fig. 5 that concrete angle of pitch modification method is described.
As input, the rotary speed ordering calculation device 10001 that the rotary speed of this anemobiagraph output v, wind speed and blade is mapped is calculated blade rotary speed value ω ref to upper control device 1000 with the output v of anemobiagraph 201.Furthermore, the rotary speed controller 10002 of upper control device 1000 will be calculated angle of pitch command value as input by blade angle speed omega and the above-mentioned rotary speed instruction ω ref of electric power switching controller 2000 inputs
With the generation power command value Pref of electric power converter 20, and with angle of pitch command value
Calculate to angle of pitch corrector 6000, generation power command value Pref is exported to electric power switching controller 2000.
Angle of pitch corrector 6000 carries out product calculation by the output Δ S of 6001 pairs of cooling capacity detectors 3000 of multiplier with gain K, and this product is inputted to addometer 6002.At this, gain K is the gain that the electric power reduction amplitude, ao S of the electric power that can carry of electric power converter 20 is modified to the angle of pitch, be that the angle of pitch changes to suitable slurry side when bearing at Δ S, and the torque of the direction of rotation of blade 10 reduces.It is little that gain K is designed to the electric power that correction by the angle of pitch can generate electricity the input energy Ratios electric power converter 20 based on wind.
6002 pairs of angle of pitch instructions from 1000 inputs of upper control device of addometer
Add operation is carried out in 6001 outputs with multiplier, with it with as the revised angle of pitch
To 12 outputs of angle of pitch adjuster.
More than, when the output of temperature sensor 200 is higher than the value t1 that stipulates, the angle of pitch command value of blade 10
Starched the side correction to suitable, thereby because the torque of wind direction blade 10 inputs reduces, thereby the input energy of wind generator system reduces.
The action waveforms example of the wind generator system of present embodiment is shown in Figure 10.
The electric power of the electric power that the curve chart of Figure 10 represents temperature sensor 200 detected value Tamb from top to bottom successively, can carry reduces amplitude, ao S, angle of pitch instruction
Blade rotary angular velocity omega, the in addition time variation of generator generation power P.
At moment time1, temperature sensor 200 surpasses the judgement temperature t 1 of regulation.Wind generator system 1 of the present invention detects by the situation that 3000 pairs of temperature sensor 200 output valves of cooling capacity detector surpass set point of temperature t1, and the electric power of the electric power that can carry reduces amplitude, ao S to 6000 outputs of angle of pitch corrector.Angle of pitch corrector 6000 is with angle of pitch command value
Change to as the negative direction along the slurry side, and will be corresponding to the angle of pitch command value of Δ S from 1000 outputs of upper control device
To 12 outputs of angle of pitch adjuster.Because angle of pitch adjuster 12 is according to command value
Adjust the angle of pitch, thereby the torque of the direction of rotation that blade 10 is applied reduces.
Because the direction of rotation torque of blade 10 reduces, and do not change from the electric power that generator 15 obtains at moment time1 electric power converter 20, so the angular velocity of rotation ω of blade 10 reduces transiently.
Electric power switching controller 2000 reduces generation power P according to Pref.Because generating electric weight P descends, thus the heating that produces because of the loss of electric power converter 20 inside reduce, thereby electric power converter 20 can remain in operation.
Because electric power converter 20 can remain in operation, the load torque that produces in the generating of blade 10 effect generators 15, so the angular velocity of rotation ω of blade 10 can sharply not rise and can avoid rotation.
In the present embodiment, by utilizing temperature sensor 200 to detect the cooling capacity decline that the extraneous gas temperature is inferred cooling system 3, but, as shown in Figure 6, temperature sensor 200 can detect the cooling water temperature in the exit of cooling system 3, thereby the cooling capacity of using this detected value to infer cooling system 3 descends.
In addition, temperature sensor 200 can detect the cooling water temperature of the porch of cooling system 3 as shown in Figure 7, and infers the cooling capacity of cooling system 3 with this detected value.
In addition, the electric power converter of present embodiment is that the use cooling water is the water-cooled electric power converter that IGBT element, High frequency filter reactor cool off to the large element of caloric value, but also can use the forced air-cooled electric power converter of cooling fan 50 as shown in Figure 8.In this structure, preferably possesses the cooling fin of the contact area that contacts with cooling air for increase IGBT element.In this case, temperature sensor can detect the cooling air inlet temperature, can also detect the air themperature of cooling air ejiction opening.
In addition, in the present embodiment, although the electric power that cooling capacity detector 3000 for being included in the electric power switching controller 2000, can transmit electric power in the 2000 interior calculating of electric power switching controller as Fig. 9 puts down in writing reduces amplitude.
As mentioned above, for the wind generator system of present embodiment, even cause the electric power converter cooling capacity to reduce because the extraneous gas temperature rises, realize remaining in operation of electric power converter by the input energy of restriction wind, thereby can prevent the rotation of crossing of blade.
[embodiment 2]
In the present embodiment, the example that detects the wind generator system 1 of cooling capacity by the electric power converter internal temperature is described.
Figure 11 is the example of structure chart of the wind generator system 1 of expression embodiment 1.
For with the wind generator system 1 of Fig. 1 in the structure of giving same-sign shown in Figure 1 that has illustrated have the part of identical function description thereof is omitted.
The differential point of the wind generator system of present embodiment and embodiment 1 record is, temperature sensor 200 is arranged in the framework of the converter 21 of taking in electric power converter 20 and inverter 22.
In embodiment 1, detect the temperature that indirectly detects cooling water directly or by environment temperature, reduction with the cooling capacity of the cooling system 3 of electric power converter 20 cooling is detected, with respect to this, the cooling capacity that present embodiment is inferred cooling system 3 by temperature in the framework that detects electric power converter 20 reduces, thereby the angle of pitch command value of blade 10 is revised.
By this structure, the heating that can produce the internal losses because of electric power converter 20 is carried out direct-detection with the imbalance that the heat that produces because of cooling is emitted, and therefore can avoid the tripping operation of electric power converter 20, consequently can prevent the rotation of crossing of blade 10.
Below, use Figure 11, Figure 12 that the wind generator system of present embodiment is described.
Figure 11 illustrates electric power converter 20 and the cooling system 3 of the wind generator system of present embodiment.Electric power converter 20 is connected with generator 15 via cable 25, and connects to transformer 30 via cable 26.Wind generator system 1 shown in not shown blade, pivot hub, axle, generator, enging cabin, tower, transformer, electric power system and the embodiment 1 is same.
Figure 12 illustrates the detailed content of the wind generator system of present embodiment.
For the wind generator system of present embodiment, electric power converter 20 possesses framework 10000, possesses converter 21, inverter 22 in this framework.In addition, in the wind generator system of present embodiment, be not near cooling system 3, but in framework 10000, possess temperature sensor 200.
In the situation that causes the cooling capacity of the cooling system 3 that electric power converter 20 is cooled off to descend because of the rising of extraneous gas temperature, the heating that produces because of the loss in the electric power converter 20 surpasses the heat that utilizes cooling system 3 to discharge to the outside of framework 10000, thereby temperature rises in the dish of electric power converter 20.Temperature sensor 200 detects temperature in this dish, and inputs the temperature T amb that detects to cooling capacity detector 3000.
The purpose of temperature sensor 200 is to detect the interior heating of framework and because cooling off the balance of the heat release that produces, therefore preferably possesses temperature sensor 200 on framework top.Particularly, preferably being arranged on the short transverse of framework highly is place more than 1/2.
The interior temperature T amb of the framework of utilizing temperature sensor 200 to detect is to 2000 inputs of electric power switching controller, electric power switching controller 2000 is implemented the computing identical with the cooling capacity detector 3000 of explanation among the embodiment 1, and will transmit electric power and reduce amplitude, ao S and export to angle of pitch corrector 6000.
By forming this structure, can detect temperature in electric power converter 20 frameworks in the wind generator system of present embodiment rises and the angle of pitch of blade 10 is revised, the generation power instruction of therefore sending to electric power converter 20 reduces, thereby the heating of electric power converter 20 reduces.By heating is reduced, can when avoiding electric power converter 20 overheated, continue the running of electric power converter 20, therefore can avoid the rotation of crossing of blade 10.
As mentioned above, for the wind generator system of present embodiment, even cause the electric power converter cooling capacity to descend because the extraneous gas temperature rises, also can realize remaining in operation of electric power converter based on the input energy of wind by restriction, thereby prevent the rotation of crossing of blade.
And, according to present embodiment, by the temperature in the framework that detects electric power converter 20, thereby detect the imbalance because of the loss heating that produces and the chilling room of realizing by the cooling system 3 of electric power converter 20 of electric power converter 20 inside, thereby the cooling capacity that can detect more reliably cooling system 3 reduces, realize remaining in operation of electric power converter 20, consequently can avoid the rotation of crossing of blade 10.
[embodiment 3]
In the present embodiment, the example that detects the wind generator system 1 of cooling capacity by the electric power converter internal temperature is described.
Figure 13 is the example of structure chart of the wind generator system 1 of expression embodiment 1.
For with the wind generator system 1 of Fig. 1 in the structure of giving same-sign shown in Figure 1 that has illustrated have the part of identical function, the description thereof will be omitted.
The differential point of the wind generator system of present embodiment and embodiment 2 records is that temperature sensor 200 is arranged on the cooling fin of semiconductor element of electric power converter 20.
In the electric power converter of water-cooled, when and cooling capacity cooling system 3 short at the heat delay constant of cooling fin descends, temperature rises to and can detect before this degree in framework, exists the junction temperature of semiconductor element to surpass permissible value and cause the possibility that element destroys.When this detected temperatures is higher than set point of temperature t1 when detecting the cooling fin temperature by temperature sensor 200; be adjusted into along the slurry side by the angle of pitch with blade 10; thereby before semiconductor element is overheated, can reduce the generation power of electric power converter 20, thereby can protect semiconductor element more reliably and the running of electric power converter 20 is continued.Because electric power converter 20 can remain in operation, produce the torque that makes the rotation deceleration of blade 10 because of the generation power of electric power converter 20 at blade 10, consequently can prevent the rotation of crossing of blade 10.
Below, use Figure 13 that the wind generator system of present embodiment is described.
The energy transfer part of wind generator system 1 shown in Figure 13.At this, not shown enging cabin 60, tower 70 are identical with the structure of record in embodiment 1 and 2.
The electric power converter 20 of present embodiment possesses the temperature sensor 200 that the cooling fin with semiconductor element 22q joins.The output Tamb of temperature sensor 200 is input to electric power switching controller 2000.The computing inner at this controller, that enforcement is identical with the computing of the cooling capacity detector 3000 of embodiment 1 record, the electric power of the electric power that can carry reduce the amplitude, ao S value of calculating to 6000 outputs of angle of pitch corrector.
Angle of pitch corrector 6000 reduces amplitude, ao S as input with the electric power from the electric power that can carry of electric power switching controller 2000 output, similarly angle of pitch command value is revised with the computing of the angle of pitch corrector 6000 of embodiment 1 and embodiment 2, will be as the angle of pitch command value of this output
Send to angle of pitch reconditioner 12.
According to said structure, the wind generator system 1 of present embodiment detects the temperature of the cooling fin of this semiconductor element by temperature sensor 200, if the temperature of cooling fin is more than the setting, then the angle of pitch of blade 10 is reduced to the generation power that makes electric power converter 20 along slurry side correction, thereby can in the semiconductor element of avoiding electric power converter 20 overheated, realize remaining in operation of electric power converter 20.
Because electric power converter 20 remains in operation, so effect has the torque on the direction that the rotation that makes blade 10 slows down, therefore can prevent the rotation of crossing of blade 10.
As mentioned above, for the wind generator system of present embodiment, even the extraneous gas temperature rises and also can reduce the electric power converter cooling capacity, therefore by restriction based on the input energy of wind and realize remaining in operation of electric power converter, thereby can prevent the rotation of crossing of blade.
Furthermore; according to present embodiment; owing to can use the cooling fin detected temperatures correction angle of pitch of semiconductor element; thereby can protect semiconductor element more reliably and prevent that it is overheated and the running of electric power converter 20 is continued, consequently can avoid the rotation of crossing of blade 10.
[embodiment 4]
In the present embodiment, the example that detects the wind generator system 1 of cooling capacity by the high frequency filter internal temperature is described.
Figure 14 is the example of the structure chart of the wind generator system 1 among the expression embodiment 1.
For with the wind generator system 1 of Fig. 1 in the structure of the same-sign shown in Figure 1 that has illustrated have the part of identical function description thereof is omitted.
The differential point of the wind generator system of present embodiment and embodiment 2 or 3 records is that temperature sensor 200 is arranged on the cooling fin of high frequency filter 22fil.
Same with described embodiment 3, in the high frequency filter of water-cooled, when and cooling capacity cooling system 3 short when the heat delay constant of cooling fin reduces, temperature rises to and can detect before this degree in framework, there is following possibility, that is, the temperature of high frequency filter surpasses permissible value and causes insulation breakdown, thereby causes the breakage of electric power converter 20.Therefore; detect the cooling fin temperature of high frequency filter by temperature sensor 200; when this detected temperatures is higher than set point of temperature t1; by with the angle of pitch of blade 10 to along the adjustment of slurry side; thereby can before filter element is overheated, reduce the generation power of electric power converter 20, thereby protecting filter element and the running of electric power converter 20 is proceeded more reliably.Because electric power converter 20 can remain in operation, so can produce the torque that makes the rotation deceleration of blade 10 because of the generation power of electric power converter 20 at blade 10, consequently can prevent the rotation of crossing of blade 10.
Below, use Figure 14 that the wind generator system of present embodiment is described.
Figure 14 illustrates the energy transfer part of wind generator system 1.At this, not shown enging cabin 60, tower 70 are identical with the structure of record among the embodiment 1 to 3.
The electric power converter 20 of present embodiment possesses the temperature sensor 200 that the cooling fin with high frequency filter 22fil joins.Need to prove that the cooling fin that can constitute at high frequency filter 21fil possesses temperature sensor 200.The output Tamb of temperature sensor 200 inputs to respectively electric power switching controller 2000.The computing inner at this controller, that realization is identical with the computing of the cooling capacity detector 3000 of embodiment 1 record, the electric power of the electric power that can carry reduce the amplitude, ao S value of calculating to 6000 outputs of angle of pitch corrector.
Angle of pitch corrector 6000 reduces amplitude, ao S as input with the electric power from the electric power that can carry of electric power switching controller 2000 output, similarly revise angle of pitch command value with the computing of the angle of pitch corrector 6000 of embodiment 1 and even 3, will be as the angle of pitch command value of its output
Send to angle of pitch reconditioner 12.
According to said structure, the wind generator system 1 of present embodiment detects the temperature of the cooling fin of high frequency filter 22fil by temperature sensor 200, if the temperature of cooling fin is more than the setting, then the angle of pitch of blade 10 is reduced to the generation power that makes electric power converter 20 along slurry side correction, thereby can in the filter element of avoiding electric power converter 20 overheated, the running of electric power converter 20 be proceeded.
Because electric power converter 20 remains in operation, so act on the torque of the direction that the oriented rotation that makes blade 10 slows down, therefore can prevent the rotation of crossing of blade 10.
As mentioned above, for the wind generator system of present embodiment, even cause the electric power converter cooling capacity to reduce because the extraneous gas temperature rises, by restriction based on the input energy of wind and realize remaining in operation of electric power converter, thereby can prevent the rotation of crossing of blade.
Furthermore; according to present embodiment; owing to can revise the angle of pitch with the cooling fin detected temperatures of filter element; thereby protecting filter element and prevent that it is overheated and can continue simultaneously the running of electric power converter 20 consequently can be avoided the rotation of crossing of blade 10 more reliably.
[embodiment 5]
In the present embodiment, the example that detects the wind generator system 1 of cooling capacity by the cooling fin internal temperature beyond the cooling fin of semiconductor element and high frequency filter is described.
Figure 15 is the example of structure chart of the wind generator system 1 of expression embodiment 1.
The structure of giving same-sign shown in Figure 1 that has illustrated in the wind generator system 1 of Fig. 1 is had the part of identical function, and description thereof is omitted.
The differential point of wind generator systems of present embodiment and embodiment 2 and even 4 records is that temperature sensor 200 is arranged on this point on the cooling fin beyond the cooling fin of semiconductor element and high frequency filter.
Described embodiment 3 to 4 is compared, compare with semiconductor element and the high frequency filter of water-cooled, the heat delay constant of cooling fin is long, but when the cooling capacity of cooling system 3 descends than framework in temperature rise to quickly the degree that can detect and can detect the reduction of cooling capacity, further comparing embodiment 3 and 4, since need not temperature sensor 200 is installed in respectively on each semiconductor element and the high frequency filter, therefore can cutting down cost.Furthermore, with respectively on each semiconductor element, the high frequency filter embodiment of mounting temperature sensor 200 compare, can realize centralized management.Thus, before the temperature of semiconductor element, filter element surpasses permissible value, detect temperature in the described cooling fin by temperature sensor 200, and when this detected temperatures surpasses set point of temperature t1 with the angle of pitch of blade 10 to along the adjustment of slurry side, can before semiconductor element, filter element are overheated, reduce thus the generation power of electric power converter 20.
In addition, can protect more reliably semiconductor element, filter element and while that electric power converter 20 is remained in operation.Because electric power converter 20 can remain in operation, therefore can produce the torque that makes the rotation deceleration of blade 10 because of the generation power of electric power converter 20 at blade 10, consequently can prevent the rotation of crossing of blade 10.
Below, use Figure 15 that the wind generator system of present embodiment is described.
Figure 15 illustrates the energy transfer part of wind generator system 1.At this, not shown enging cabin 60, tower 70 are identical with the structure that embodiment 1 to 4 puts down in writing.
The electric power converter 20 of present embodiment possesses the temperature sensor 200 that the cooling fin beyond the cooling fin with semiconductor element and high frequency filter joins.The output Tamb of temperature sensor 200 is input to electric power switching controller 2000.In this controller inside, the computing that enforcement is identical with the computing of the cooling capacity detector 3000 of embodiment 1 record, the electric power of the electric power that can carry reduces the amplitude, ao S value of calculating to 6000 outputs of angle of pitch corrector.
Angle of pitch corrector 6000 will reduce amplitude, ao S as input from the electric power that can transmit electric power of electric power switching controller 2000 outputs, similarly revise angle of pitch command value with the computing of the angle of pitch corrector 6000 of embodiment 1 to 4, will be as the angle of pitch command value of its output
Send to angle of pitch reconditioner 12.
According to said structure, the wind generator system 1 of present embodiment detects the cooling fin cooling fin temperature in addition of semiconductor element and high frequency filter by temperature sensor 200, if the temperature of cooling fin is more than the setting, then the angle of pitch of blade 10 is reduced to the generation power that makes electric power converter 20 along slurry side correction, thereby in the semiconductor element of avoiding electric power converter 20 and filter element overheated, the running of electric power converter 20 is proceeded.
Because electric power converter 20 turns round, thus the torque of the direction that the oriented rotation that makes blade 10 slows down acted on, thus can prevent the rotation of crossing of blade 10.
As mentioned above, for the wind generator system of present embodiment, even cause the electric power converter cooling capacity to reduce because the extraneous gas temperature rises, also can be by restriction based on the input energy of wind and realize remaining in operation of electric power converter, thus can prevent the rotation of crossing of blade.
Furthermore; according to present embodiment; owing to can use the cooling fin detected temperatures correction angle of pitch of filter element; so protecting filter element and prevent that it is overheated and simultaneously the running of electric power converter 20 is proceeded consequently can be avoided the rotation of crossing of blade 10 more reliably.
Figure 16 example illustrates the front and back state that the angle of pitch of blade 10 of the present invention is carried out variable control.
At first, how explanation obtains wind-force from the windmill that comprises blade 10, when wind 80 collisions are on blade 10, can around blade 10, produce relative Air Flow, the weather that is flowing in blade 81 of this air and leeward 82 speed are different, and therefore the difference because of this speed produces pressure differential.This pressure differential becomes lift 83 and blade is rotated take the surfaces of revolution 84 as axle.
In order to make this rotary speed variable, be that the angle of pitch is variable by the setting angle that makes described blade, thus the change in flow of blade ambient air, and lift also changes.
Particularly, under the reduction because of refrigerating function causes situation that the voltage that can export of electric power converter reduces, as the angle of pitch 87 of the blade of Figure 16 (b), increase the angle of pitch 86 of the blade before the angle of pitch control of Figure 16 (a) so that with the wind 80 that touches blade adjust blade towards connecing subparallel mode.Thus, the lift that acts on blade is reduced, thereby revolving force is reduced.
Consequently, the input energy from described blade corresponding with the described electric power that can carry controlled, thereby can be prevented that crossing of described blade from rotating and described electric power converter breaks down.
Claims (13)
1. wind generator system, it has:
Converter, it will be converted to direct current power from the generation power of the variable frequency of the synchronous generator output that is connected with the variable blade mechanism of the angle of pitch;
Smmothing capacitor, the direct current power smoothing that it exports described converter;
Inverter, it is electrically connected with electric power system, via described smmothing capacitor described direct current power is converted to the alternating electromotive force of fixed frequency from described converter, and to described electric power system output;
Angle of pitch command value calculating section, it calculates the angle of pitch command value be used to the variable control of the angle of pitch that carries out described blade, and carries out the described angle of pitch is implemented the instruction that mechanical type is adjusted according to described angle of pitch command value;
Cooling system, it cools off described converter and described inverter,
Described wind generator system is characterised in that,
Also possess:
The cooling capacity test section, it detects the cooling capacity of described cooling system or the state of cooling of electric power converter, and this electric power converter comprises described converter and described inverter;
Angle of pitch command value correction portion, it is revised the described angle of pitch command value of utilizing described angle of pitch command value calculating section to calculate,
According to the testing result of described cooling capacity test section, described angle of pitch command value correction portion is revised described angle of pitch command value, and carries out the angle of pitch of described blade is implemented the instruction of variable control according to described revised angle of pitch command value.
2. wind generator system according to claim 1 is characterized in that,
Described cooling capacity test section possesses in the described wind generator system or the temperature sensor that detects of the outer temperature of described wind generator system, and infers the reduction amplitude of the electric power that can carry to described electric power system from described electric power converter according to the testing result of described temperature sensor.
3. wind generator system according to claim 2 is characterized in that,
Described cooling capacity test section also possesses the tables of data of the set point of temperature of preseting, and along with the detected temperature of described temperature sensor becomes higher than the temperature of setting in described tables of data, and infers the reduction amplitude monotone decreasing of described electric power.
4. according to claim 2 or 3 described wind generator systems, it is characterized in that,
Described angle of pitch command value correction portion is according to the correction value of obtaining described angle of pitch command value from the reduction amplitude of the described electric power of described cooling capacity test section output, and by described angle of pitch command value and described correction value addition are exported revised angle of pitch command value.
5. wind generator system according to claim 4 is characterized in that,
Possess according to described angle of pitch command value the described angle of pitch is carried out the angle of pitch adjustment part that mechanical type is adjusted, described angle of pitch adjustment part is carried out variable control according to described revised angle of pitch command value to the angle of pitch of described blade.
6. wind generator system according to claim 2 is characterized in that,
Described temperature sensor be arranged in the described cooling system or described cooling system outside, in the described cooling system or the outer temperature of described cooling system detect.
7. wind generator system according to claim 2 is characterized in that,
Described temperature sensor is arranged in the framework of taking in described electric power converter or outside the framework, in the described framework or the outer temperature of framework detect.
8. wind generator system according to claim 1 is characterized in that,
Described cooling system is to being arranged between described synchronous generator and the described converter and the High frequency filter reactor between described inverter and the described electric power system further cools off, and described cooling capacity test section detects described cooling system to the cooling capacity of described High frequency filter reactor or the state of cooling of described High frequency filter reactor.
9. wind generator system according to claim 1 is characterized in that,
Described cooling system possesses: described converter or described inverter are used cooling air and make the heat exchanger that heat emits, the fan that makes described cooling air circulation.
10. wind generator system according to claim 1 is characterized in that,
Described cooling system possesses: make from described electric power converter obtain heat exchanger that the heat of the cooling water behind the heat emits, be used for to the pump of sending cooling water between described heat exchanger and the described electric power converter, being used for will be from the described cooling water that pumps out to described heat exchanger and the cooling water pipe of providing and delivering between the described electric power converter, cooling fin water route that the cooling water of providing and delivering from described cooling water pipe is circulated in described electric power converter.
11. wind generator system according to claim 10 is characterized in that,
Utilize described temperature sensor to detect in the described cooling water pipe or the temperature of the cooling water in the described cooling fin water route.
12. a wind generator system, it has:
Generator, it is connected with the variable blade mechanism of the angle of pitch; Electric power converter, it will be converted to from the generation power of described generator output alternating electromotive force or the direct current power of assigned frequency; Angle of pitch command value calculating section, it is calculated for the angle of pitch command value that the angle of pitch of described blade is controlled, and carries out the described angle of pitch is implemented the instruction that mechanical type is adjusted,
Described wind generator system is characterised in that,
Also possess:
The cooling capacity test section, it detects the cooling capacity of described cooling system or the state of cooling of electric power converter, and this electric power converter comprises described converter and described inverter;
Angle of pitch command value correction portion, it is revised the described angle of pitch command value of utilizing described angle of pitch command value calculating section to calculate,
According to the testing result of described cooling capacity test section, described angle of pitch command value correction portion is revised described angle of pitch command value, and carries out the angle of pitch of described blade is implemented the instruction of variable control according to described revised angle of pitch command value.
13. wind generator system according to claim 12 is characterized in that,
Described angle of pitch command value calculating section is inferred the electric weight of the electric power that can carry to described electric power system, and the information that described electric weight of inferring out is related sends to the registration target of registration in advance.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-204055 | 2011-09-20 | ||
| JP2011204055A JP5373018B2 (en) | 2011-09-20 | 2011-09-20 | Wind power generation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103023407A true CN103023407A (en) | 2013-04-03 |
| CN103023407B CN103023407B (en) | 2016-01-06 |
Family
ID=47971608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210270040.9A Active CN103023407B (en) | 2011-09-20 | 2012-07-31 | Wind generator system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5373018B2 (en) |
| CN (1) | CN103023407B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374798A (en) * | 2019-06-27 | 2019-10-25 | 沈阳工程学院 | Preventative cabin temperature control method based on blower unit realtime power |
| CN111492138A (en) * | 2017-12-20 | 2020-08-04 | 大金工业株式会社 | Fluid device |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728488B (en) * | 2013-09-26 | 2016-05-04 | 惠州三华工业有限公司 | A kind of wind-driven generator is crossed temperature detection method and system |
| KR101549532B1 (en) * | 2013-10-30 | 2015-09-02 | 삼성중공업 주식회사 | Apparatus for cooling of wind power generation |
| JP6226901B2 (en) * | 2015-03-09 | 2017-11-08 | 三菱電機株式会社 | Power generation system |
| JP2017031953A (en) * | 2015-08-06 | 2017-02-09 | 株式会社日立製作所 | Wind power generation system and wind farm |
| CN113513448B (en) * | 2021-08-10 | 2024-02-20 | 天津明智润阳技术有限公司 | Variable-pitch brake control method for preventing galloping of wind generating set |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59150982A (en) * | 1983-02-14 | 1984-08-29 | Toshiba Corp | Generator protecting device for wind power plant |
| JPS62185600A (en) * | 1986-02-10 | 1987-08-13 | Ishikawajima Harima Heavy Ind Co Ltd | Wind power generator |
| DK73897A (en) * | 1997-05-21 | 1999-02-08 | Dancontrol Eng As | Method and mechanism for reducing current and power peaks produced by a stall-controlled wind turbine |
| CN201050444Y (en) * | 2007-05-23 | 2008-04-23 | 连云港杰瑞电子有限公司 | Wind-driven generator variable pitch control system |
| CN101938138A (en) * | 2009-06-30 | 2011-01-05 | 维斯塔斯风力***有限公司 | Electric energy management during the electric network fault |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000125599A (en) * | 1998-08-12 | 2000-04-28 | Hitachi Ltd | Ac generator and vehicle using it |
| JP2003289195A (en) * | 2002-03-28 | 2003-10-10 | Mitsubishi Electric Corp | Cooling device |
| JP4501958B2 (en) * | 2007-05-09 | 2010-07-14 | 株式会社日立製作所 | Wind power generation system and control method thereof |
| JP2009171702A (en) * | 2008-01-15 | 2009-07-30 | Toyota Motor Corp | Vehicle drive system |
| JP5107271B2 (en) * | 2009-01-06 | 2012-12-26 | 三菱重工業株式会社 | Wind power generator, blade pitch angle control method thereof, and program |
| JP5394217B2 (en) * | 2009-12-14 | 2014-01-22 | 株式会社日立パワーソリューションズ | Natural energy power plant with power storage |
-
2011
- 2011-09-20 JP JP2011204055A patent/JP5373018B2/en active Active
-
2012
- 2012-07-31 CN CN201210270040.9A patent/CN103023407B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59150982A (en) * | 1983-02-14 | 1984-08-29 | Toshiba Corp | Generator protecting device for wind power plant |
| JPS62185600A (en) * | 1986-02-10 | 1987-08-13 | Ishikawajima Harima Heavy Ind Co Ltd | Wind power generator |
| DK73897A (en) * | 1997-05-21 | 1999-02-08 | Dancontrol Eng As | Method and mechanism for reducing current and power peaks produced by a stall-controlled wind turbine |
| CN201050444Y (en) * | 2007-05-23 | 2008-04-23 | 连云港杰瑞电子有限公司 | Wind-driven generator variable pitch control system |
| CN101938138A (en) * | 2009-06-30 | 2011-01-05 | 维斯塔斯风力***有限公司 | Electric energy management during the electric network fault |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111492138A (en) * | 2017-12-20 | 2020-08-04 | 大金工业株式会社 | Fluid device |
| CN111492138B (en) * | 2017-12-20 | 2023-02-07 | 大金工业株式会社 | Fluid device |
| CN110374798A (en) * | 2019-06-27 | 2019-10-25 | 沈阳工程学院 | Preventative cabin temperature control method based on blower unit realtime power |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5373018B2 (en) | 2013-12-18 |
| CN103023407B (en) | 2016-01-06 |
| JP2013066319A (en) | 2013-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103023407B (en) | Wind generator system | |
| US8264094B2 (en) | High voltage direct current link transmission system for variable speed wind turbine | |
| US8183704B2 (en) | Connection and disconnection sequence for variable speed wind turbine having an exciter machine and a power converter not connected to the grid | |
| EP2551984B1 (en) | Power plant control system and method for influencing high voltage characteristics | |
| US9726144B2 (en) | Method for optimizing the operation of a wind turbine | |
| US20230041049A1 (en) | System and method for providing grid-forming control for a double-fed wind turbine generator | |
| CN115681000A (en) | Method for power control based on inverter resources with grid forming converter | |
| US10054108B2 (en) | Wind turbine system and method for controlling a wind turbine system by power monitoring | |
| US11056884B2 (en) | Wind turbine system with integrated reactive power compensation device | |
| CN105450122B (en) | A kind of double-fed fan motor unit pusher side current transformer IGBT device junction temperature fluctuates suppressing method | |
| JP5988750B2 (en) | Power generation system | |
| US20230349366A1 (en) | Method for operating a wind turbine and a wind turbine | |
| EP3457417B1 (en) | Control method for protecting transformers | |
| US10218298B2 (en) | Spillover of reactive current to line side converter | |
| Eltamaly et al. | Investigation of DC link capacitor failures in DFIG based wind energy conversion system | |
| EP4205251A1 (en) | Control of a dfig grid side converter | |
| US11682990B2 (en) | System and method for dynamically estimating active power capability of an inverter-based resource | |
| Ma et al. | Power electronics and controls for large wind turbines and wind farms | |
| US11901735B2 (en) | System and method for reducing instability in reactive power command of an inverter-based resource | |
| US10975847B1 (en) | System and method for farm-level control of transient power boost during frequency events | |
| US10742110B1 (en) | System and method for operating a power converter to improve IGBT reliability | |
| WO2023077263A1 (en) | Systems and methods for optimizing wind turbine performance during noise reduced operation | |
| Blasco-Gimenez et al. | Voltage and frequency control of SG based wind farms with uncontrolled HVDC rectifier | |
| WO2023177393A1 (en) | System and method for mitigating sub-synchronous oscillations in an inverter-based resource | |
| CN114597935A (en) | Method for controlling negative sequence current of grid forming control based on resources of inverter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191225 Address after: Tokyo, Japan Patentee after: Hitachi Industrial Machinery Co., Ltd Address before: Tokyo, Japan Patentee before: Hitachi Production Co., Ltd. |
|
| TR01 | Transfer of patent right |