CN107317360A - Direct-drive permanent magnet synchronous aerogenerator group starts grid-connection control device and control method - Google Patents
Direct-drive permanent magnet synchronous aerogenerator group starts grid-connection control device and control method Download PDFInfo
- Publication number
- CN107317360A CN107317360A CN201710661679.2A CN201710661679A CN107317360A CN 107317360 A CN107317360 A CN 107317360A CN 201710661679 A CN201710661679 A CN 201710661679A CN 107317360 A CN107317360 A CN 107317360A
- Authority
- CN
- China
- Prior art keywords
- wind
- controller
- driven generator
- fan
- current transformer
- 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
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims abstract description 36
- 239000000523 sample Substances 0.000 claims abstract description 17
- 238000007600 charging Methods 0.000 claims description 29
- 230000005611 electricity Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010248 power generation Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
Classifications
-
- H02J3/386—
-
- 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
- Y02E10/76—Power conversion electric or electronic aspects
Abstract
Start grid-connection control device the invention discloses a kind of direct-drive permanent magnet synchronous aerogenerator group, including controller of fan, inverter controller, speed probe, voltage sensor and the wind-driven generator being sequentially connected in series, pusher side is switched, current transformer pusher side module, DC capacitor, current transformer net side module, grid-connected main switch, power network, on wind-driven generator, DC capacitor two ends, grid side is equipped with voltage sensor, speed probe is arranged on wind-driven generator, voltage sensor, speed probe is connected with controller of fan, controller of fan is connected with inverter controller, inverter controller is switched with pusher side, current transformer pusher side module, current transformer net side module, grid-connected main switch is connected.In the control device of the present invention, using the characteristic of direct-drive permanent magnet synchronous aerogenerator, the pre-charge circuit of no current transformer DC loop has saved cost.Start grid-connected control method the invention also discloses a kind of direct-drive permanent magnet synchronous aerogenerator group.
Description
Technical field
The present invention relates to wind-powered electricity generation field, more particularly to a kind of direct-drive permanent magnet synchronous aerogenerator group starts cutting-in control dress
Put and control method.
Background technology
With the development of World Economics, the consumption of the energy will be sharply increased.Due to the relatively deficient of china natural resources and not
Destruction of the consumption of renewable resource for environment so that China's long-term environment and resource of being faced with following a period of time
Dual-pressure, the regenerative resource developed including wind-force and solar power generation is that the preferably solution of China energy predicament is done
Method.As wind-powered electricity generation proportion is continuously increased in power network, China proposes higher technical requirements to Wind turbines, with wind
Fire is more and more nearer with the speed of valency, and the cost pressure of each wind-powered electricity generation manufacturer is increasing, therefore, how to utilize existing straight drive
The characteristics of permanent magnetism Wind turbines, technical scheme that is a kind of suitable and saving hardware cost is proposed, wind undoubtedly will be greatly promoted
The exploitation scale of this regenerative resource of power generating, drives domestic associated wind generating equipment to make the development of industry, to its people
Economic healthy and rapid development plays an important role.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of simple in construction, cost low direct-drive permanent-magnet synchronous wind-force
Generating set starts grid-connection control device, and provides a kind of grid-connected control method.
Technical proposal that the invention solves the above-mentioned problems is：A kind of direct-drive permanent magnet synchronous aerogenerator group starts and network control
Device processed, including current transformer net side module, current transformer pusher side module, controller of fan, inverter controller, wind-driven generator,
Grid-connected main switch, pusher side switch, speed probe, voltage sensor, DC capacitor, wind-driven generator, pusher side switch, current transformer
Pusher side module, DC capacitor, current transformer net side module, grid-connected main switch, power network are sequentially connected in series, on wind-driven generator, direct current
Hold two ends, grid side and be equipped with voltage sensor, be respectively used to detection wind-driven generator voltage, DC capacitor voltage and power network electricity
Pressure, the signal output part of voltage sensor is connected with inverter controller, and speed probe is arranged on wind-driven generator, rotating speed
The signal output part of sensor is connected with the input of controller of fan, the output end of controller of fan and inverter controller
Input is connected, control end that the output end of inverter controller is switched with pusher side respectively, current transformer pusher side module, current transformer net
Side form block, the control end of grid-connected main switch are connected.
Above-mentioned direct-drive permanent magnet synchronous aerogenerator group starts grid-connection control device, and the current transformer pusher side module is PWM
Controlled rectification type.
A kind of direct-drive permanent magnet synchronous aerogenerator group starts grid-connected control method, comprises the following steps：
（1）Wind turbines start, and controller of fan sends startup blower fan order, and fan yaw pitch-controlled system starts, current transformer control
Device control pusher side switch processed closes a floodgate, and wind-driven generator enters constant speed control pattern；
（2）Speed probe detected to the rotating speed of wind-driven generator and feeds back to controller of fan in real time, controller of fan
Value of feedback to speed probe is detected, and judges whether wind-driven generator rotating speed is more than or equal to setting speed, if so,
The stable operation under setting speed of wind-driven generator rotating speed is then kept by the pitch control of blade, while controller of fan is provided
Current transformer DC capacitor charging instruction；If it is not, then proceeding velocity measuring；
（3）Inverter controller is received after the instruction that controller of fan is provided, and control current transformer pusher side module enters uncontrollable whole
Stream mode charges, detection DC capacitor voltage and wind-driven generator magnitude of voltage, and carry out voltage judgement in real time in charging process, when
When detecting DC capacitor voltage value less than generator voltage value * 1.14, DC capacitor charging is continued waiting for, when DC capacitor electricity
When pressure is more than or equal to generator voltage value * 1.14, continue to charge, charge mode enters PWM rectifications by uncontrollable rectification charging
Charging；
（4）Continue to charge, detect line voltage and calculate and refer to DC voltage, with reference to DC voltage=line voltage value * 1.2, enter
Row voltage judges, when DC capacitor voltage value is less than with reference to DC voltage value, continues waiting for DC capacitor charging；Work as direct current
When holding magnitude of voltage more than or equal to reference to DC voltage value, charging complete, now inverter controller cancellation current transformer pusher side mould
Block PWM rectification charging orders, charging stops, while to grid-connected main switch reclosing command, main switch closes a floodgate, and net side enters same step
State processed；
（5）After net side synchronization, controller of fan changes the control model of wind-driven generator, enters torque by constant speed control pattern
Control model, pitch-controlled system proceeds to become oar action, and wind-driven generator rotating speed rises；
（6）When wind-driven generator rotating speed reaches preset rotation speed, controller of fan gives inverter controller power generation command, current transformer machine
Side form block receives control instruction, into modulation generating state.
Above-mentioned grid-connected control method, the step（1）In, before Wind turbines start, in addition to fan condition monitoring step,
Controller of fan checks the status signal of wind-driven generator, judges after wind-driven generator normal non-fault, that is, meets entry condition,
Into Wind turbines starting step.
Above-mentioned grid-connected control method, the step（2）In, setting speed turns for 3-5.
Above-mentioned grid-connected control method, the step（6）In, preset rotation speed turns for 6-8.
The beneficial effects of the present invention are：In the control device of the present invention, the characteristics of for permanent magnet direct-drive synchronous generator,
The characteristic that can be generated electricity using its slow-speed of revolution, can be charged to current transformer dc bus, eliminate the preliminary filling of converter loop
Circuit, has saved cost.This control device retrofit work amount in blower fan system is small, can lower the cost of current transformer, warp
Ji property is good, is suitable for large batch of popularization and application.
Brief description of the drawings
Fig. 1 is the structural representation of control device of the present invention.
Fig. 2 is the circuit diagram of current transformer pusher side module in Fig. 1.
Fig. 3 is the flow chart of control method of the present invention.
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of direct-drive permanent magnet synchronous aerogenerator group starts grid-connection control device, including current transformer net side
Module 1, current transformer pusher side module 2, controller of fan 3, inverter controller 4, wind-driven generator 5, grid-connected main switch 6, pusher side
Switch 7, speed probe 8, DC capacitor 9, voltage sensor 10, wind-driven generator 5, pusher side switch 7, current transformer pusher side module
2nd, DC capacitor 9, current transformer net side module 1, grid-connected main switch 6, power network are sequentially connected in series, on wind-driven generator 5, DC capacitor 9
Two ends, grid side are equipped with voltage sensor 10, are respectively used to detection wind-driven generator voltage, DC capacitor voltage and power network electricity
Pressure, the signal output part of voltage sensor 10 is connected with inverter controller 4, and speed probe 8 is arranged on wind-driven generator 5
On, the signal output part of speed probe 8 is connected with the input of controller of fan 3, the output end and unsteady flow of controller of fan 3
The input of device controller 4 is connected, and the output end of inverter controller 4 switchs 7 control end, current transformer pusher side with pusher side respectively
Module 2, current transformer net side module 1, the control end of grid-connected main switch 6 are connected.
Wherein controller of fan 3 and inverter controller 4 as control core, it by gather speed probe 8 and
Gather DC bus-bar voltage, wind-driven generator voltage, the data such as line voltage, as enter that different disposal flow judges according to
According to.Using 2000KW Wind turbines as example, the rated voltage of wind-driven generator 5 is 690V, and line voltage is 690V, wind-force hair
Motor 5 enters current transformer charged state when reaching 4 turns, and generating state is entered at 7 turns.
As shown in Fig. 2 the current transformer pusher side module 2 is PWM controlled rectification types.After pusher side switch 7 closes a floodgate, uncontrollable
Under state, the reverse commutation diode that the electricity that wind-driven generator 5 is sent is carried by K1-K6 modules charges to electric capacity C, when
Reach after default magnitude of voltage, into PWM charged states, K1-K6 modules enter controllable charge mode.
A kind of direct-drive permanent magnet synchronous aerogenerator group starts grid-connected control method, comprises the following steps：
（1）First, step 301：Wind turbines carry out fan condition detection, and controller of fan checks the state letter of wind-driven generator
Number, judge after wind-driven generator normal non-fault, that is, meet entry condition；Step 302：Start blower fan, Wind turbines start, wind
Machine controller sends startup blower fan order；Step 303：Fan yaw pitch-controlled system starts；Step 304：Driftage becomes oar and started
Cheng Hou, wind-driven generator enters constant speed control pattern；Step 305：Pusher side switch is controlled to close a floodgate by inverter controller；Become
Device control order pusher side switch is flowed to close a floodgate.After combined floodgate, angle of fan leaves absorbs wind from 90 degree to 0 degree change, mounted blade
Can, wheel speed rises, and setting speed is 4 turns under blower fan constant speed control pattern, control rotating speed stable fortune under 4 turns of states
OK；
（2）Step 306：Motor speed detects that speed probe is detected and fed back to the rotating speed of wind-driven generator in real time
Controller of fan, controller of fan is detected to the value of feedback of speed probe；Step 307：Motor speed judges, judges wind
Whether power generator rotating speed is more than or equal to 4 turns of setting speed, if so, then keeping wind-driven generator by the pitch control of blade
Rotating speed stable operation under setting speed, while into step 308：Controller of fan provides the charging of current transformer DC capacitor and referred to
Order；If it is not, then proceeding velocity measuring, imposed a condition until wind-driven generator speed is reached；
（3）Step 309：Inverter controller is received after the instruction that controller of fan is provided, and control current transformer pusher side module enters
Uncontrollable rectification mode charging；Step 310 and step 311 are carried out in charging process simultaneously, in real time detection wind-driven generator voltage
With DC capacitor voltage value；Because wind-driven generator is now constant speed control, the stator voltage of wind-driven generator is basicly stable, enters
Enter step 312：Calculate and refer to DC voltage 1, with reference to DC voltage 1=generator actual voltage value * 1.14；Step 313：Carry out
Voltage judges 1, when detecting DC capacitor voltage value less than generator voltage value * 1.14, continues waiting for DC capacitor charging,
When DC capacitor voltage rises above or during equal to generator voltage value * 1.14, uncontrollable rectification mode charging complete enters
Step 314：Current transformer pusher side module enters PWM rectification charging patterns；
（4）Step 315：Continue to charge, detect line voltage；Step 316：Calculate refer to DC voltage 2, with reference to DC voltage 2=
Line voltage value * 1.2；Step 317：Carry out voltage and judge 2, when DC capacitor voltage value is less than with reference to DC voltage 2, continue
Wait DC capacitor charging；When DC capacitor voltage value is more than or equal to reference to DC voltage 2, PWM rectification chargings are completed, this
When DC capacitor charging complete, inverter controller cancel current transformer pusher side module PWM rectification charging orders, charging stop, together
When enter step 318, inverter controller give grid-connected main switch reclosing command, main switch close a floodgate, into step 319, net side is entered
Enter synchronous modulation state；
（5）Step 320：After net side synchronization, the status signal of the grid-connected completion of inverter controller fan controller, air-blower control
Device changes the control model of wind-driven generator, enters torque control model by constant speed control pattern, pitch-controlled system proceeds
Become oar action, wind-driven generator rotating speed rises；
（6）When wind-driven generator rotating speed reaches 7 turns of preset rotation speed, into step 321, controller of fan gives inverter controller hair
Electricity instruction, current transformer pusher side module receives control instruction, into modulation generating state.
Claims (6)
1. a kind of direct-drive permanent magnet synchronous aerogenerator group starts grid-connection control device, it is characterised in that：Including current transformer net side
Module, current transformer pusher side module, controller of fan, inverter controller, wind-driven generator, grid-connected main switch, pusher side are switched, turned
Fast sensor, voltage sensor, DC capacitor, wind-driven generator, pusher side switch, current transformer pusher side module, DC capacitor, unsteady flow
Device net side module, grid-connected main switch, power network are sequentially connected in series, on wind-driven generator, DC capacitor two ends, grid side be equipped with voltage
Sensor, is respectively used to detection wind-driven generator voltage, DC capacitor voltage and line voltage, the signal output of voltage sensor
End is connected with inverter controller, and speed probe is arranged on wind-driven generator, the signal output part and wind of speed probe
The input of machine controller is connected, and the output end of controller of fan is connected with the input of inverter controller, current transformer control
The output end of device respectively with pusher side switch control end, current transformer pusher side module, current transformer net side module, grid-connected main switch control
End processed is connected.
2. direct-drive permanent magnet synchronous aerogenerator group according to claim 1 starts grid-connection control device, it is characterised in that：
The current transformer pusher side module is PWM controlled rectification types.
3. a kind of direct-drive permanent magnet synchronous aerogenerator group based on described in claim 1 or 2 start grid-connection control device and
Network control method, comprises the following steps：
（1）Wind turbines start, and controller of fan sends startup blower fan order, and fan yaw pitch-controlled system starts, current transformer control
Device control pusher side switch processed closes a floodgate, and wind-driven generator enters constant speed control pattern；
（2）Speed probe detected to the rotating speed of wind-driven generator and feeds back to controller of fan in real time, controller of fan
Value of feedback to speed probe is detected, and judges whether wind-driven generator rotating speed is more than or equal to setting speed, if so,
The stable operation under setting speed of wind-driven generator rotating speed is then kept by the pitch control of blade, while controller of fan is provided
Current transformer DC capacitor charging instruction；If it is not, then proceeding velocity measuring；
（3）Inverter controller is received after the instruction that controller of fan is provided, and control current transformer pusher side module enters uncontrollable whole
Stream mode charges, detection DC capacitor voltage and wind-driven generator magnitude of voltage, and carry out voltage judgement in real time in charging process, when
When detecting DC capacitor voltage value less than generator voltage value * 1.14, DC capacitor charging is continued waiting for, when DC capacitor electricity
When pressure is more than or equal to generator voltage value * 1.14, continue to charge, charge mode enters PWM rectifications by uncontrollable rectification charging
Charging；
（4）Continue to charge, detect line voltage and calculate and refer to DC voltage, with reference to DC voltage=line voltage value * 1.2, enter
Row voltage judges, when DC capacitor voltage value is less than with reference to DC voltage value, continues waiting for DC capacitor charging；Work as direct current
When holding magnitude of voltage more than or equal to reference to DC voltage value, charging complete, now inverter controller cancellation current transformer pusher side mould
Block PWM rectification charging orders, charging stops, while to grid-connected main switch reclosing command, main switch closes a floodgate, and net side enters same step
State processed；
（5）After net side synchronization, controller of fan changes the control model of wind-driven generator, enters torque by constant speed control pattern
Control model, pitch-controlled system proceeds to become oar action, and wind-driven generator rotating speed rises；
（6）When wind-driven generator rotating speed reaches preset rotation speed, controller of fan gives inverter controller power generation command, current transformer machine
Side form block receives control instruction, into modulation generating state.
4. grid-connected control method according to claim 3, it is characterised in that：The step（1）In, Wind turbines start
Before, in addition to fan condition monitoring step, the status signal of controller of fan inspection wind-driven generator, judge wind-driven generator just
After normal fault-free, that is, entry condition is met, into Wind turbines starting step.
5. grid-connected control method according to claim 3, it is characterised in that：The step（2）In, setting speed is 3-5
Turn.
6. grid-connected control method according to claim 3, it is characterised in that：The step（6）In, preset rotation speed is 6-8
Turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710661679.2A CN107317360B (en) | 2017-08-04 | 2017-08-04 | Starting grid-connected control device and control method for direct-drive permanent magnet synchronous wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710661679.2A CN107317360B (en) | 2017-08-04 | 2017-08-04 | Starting grid-connected control device and control method for direct-drive permanent magnet synchronous wind generating set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107317360A true CN107317360A (en) | 2017-11-03 |
| CN107317360B CN107317360B (en) | 2020-03-27 |
Family
ID=60170473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710661679.2A Active CN107317360B (en) | 2017-08-04 | 2017-08-04 | Starting grid-connected control device and control method for direct-drive permanent magnet synchronous wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107317360B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995016A (en) * | 2019-12-26 | 2020-04-10 | 深圳市禾望电气股份有限公司 | Converter and wind generating set |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522777A (en) * | 2011-12-27 | 2012-06-27 | 东方电气集团东方汽轮机有限公司 | Wind driven generator set |
| CN202696147U (en) * | 2012-03-30 | 2013-01-23 | 上海市电力公司 | Simulating device of VQ type permanent-magnet direct-driven wind generator set |
| CN103762919A (en) * | 2014-01-09 | 2014-04-30 | 华北电力大学 | Power control device and method used for low voltage ride through of direct-drive wind driven generator |
| US20150076823A1 (en) * | 2013-09-17 | 2015-03-19 | King Fahd University Of Petroleum And Minerals | Wind turbine permanent magnet synchronous generator (wt-pmsg) system |
| CN205178892U (en) * | 2015-12-07 | 2016-04-20 | 浙江大学 | Miniwatt wind power converter who contains communication interface |
-
2017
- 2017-08-04 CN CN201710661679.2A patent/CN107317360B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522777A (en) * | 2011-12-27 | 2012-06-27 | 东方电气集团东方汽轮机有限公司 | Wind driven generator set |
| CN202696147U (en) * | 2012-03-30 | 2013-01-23 | 上海市电力公司 | Simulating device of VQ type permanent-magnet direct-driven wind generator set |
| US20150076823A1 (en) * | 2013-09-17 | 2015-03-19 | King Fahd University Of Petroleum And Minerals | Wind turbine permanent magnet synchronous generator (wt-pmsg) system |
| CN103762919A (en) * | 2014-01-09 | 2014-04-30 | 华北电力大学 | Power control device and method used for low voltage ride through of direct-drive wind driven generator |
| CN205178892U (en) * | 2015-12-07 | 2016-04-20 | 浙江大学 | Miniwatt wind power converter who contains communication interface |
Non-Patent Citations (3)
| Title |
|---|
| A. ABEDINI等: "Applications of super capacitors for PMSG wind turbine power smoothing", 《2008 34TH ANNUAL CONFERENCE OF IEEE INDUSTRIAL ELECTRONICS》 * |
| MOHAMMAD EYDI等: "An innovative control method for adjusting the capacitor bank voltage of the hybrid energy storage system for a PMSG based wind turbine", 《2016 IRANIAN CONFERENCE ON RENEWABLE ENERGY & DISTRIBUTED GENERATION (ICREDG)》 * |
| 王丹: "直驱型风电机组的并网换流系统控制策略研究", 《中国博士学位论文全文数据库 工程科技II辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995016A (en) * | 2019-12-26 | 2020-04-10 | 深圳市禾望电气股份有限公司 | Converter and wind generating set |
| CN110995016B (en) * | 2019-12-26 | 2021-12-07 | 深圳市禾望电气股份有限公司 | Converter and wind generating set |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107317360B (en) | 2020-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103078349B (en) | A kind of double-fed wind power generator system and low voltage traversing control method | |
| EP2871759A1 (en) | A method for charging a DC link of a wind turbine power electronic converter | |
| CN201733269U (en) | Double-fed wind driven generator control system | |
| CN104166052A (en) | Method for detecting super capacitor capacitance value of wind turbine generator pitch system | |
| CN102916446A (en) | Electric control system of asynchronous wind generating set | |
| CN106405292A (en) | Fan variable pitch driver automatic testing system | |
| CN207380157U (en) | Blower variable-pitch driver aging testing system | |
| CN102142711A (en) | Control system of wind driven generator | |
| CN101141066B (en) | Method for regulating and controlling renewable energy resources power generation system by flywheel accumulation energy device | |
| CN104682444A (en) | Control method of permanent magnetic direct drive type wind power system converter of power grid | |
| CN107317360A (en) | Direct-drive permanent magnet synchronous aerogenerator group starts grid-connection control device and control method | |
| CN102619686B (en) | Novel pitch control device with low-voltage ride through capability and control method | |
| CN201674236U (en) | Wind generator output voltage-stabilization control system | |
| CN204498036U (en) | A kind of excitation unit of double-fed wind power generator | |
| CN111654060A (en) | Wind power test platform converter control system | |
| CN104124709B (en) | A kind of wind-electricity integration based on power prediction runs system | |
| CN101814745A (en) | Wind power generation simulation system based on brushless synchronous generator | |
| CN202004716U (en) | Control system of wind driven generator | |
| CN103337878B (en) | Control method for low-voltage ride through of direct-drive electric excitation type wind turbine generator | |
| CN212063517U (en) | Wind power test platform converter control system | |
| CN206114805U (en) | Fan becomes oar driver automatic test system | |
| CN202150707U (en) | Efficient intelligent aerogenerator grid connected system | |
| CN202019336U (en) | Power generating unit and energy output equipment in power network | |
| CN106469965B (en) | A kind of wind-driven generator power supply system | |
| CN103615359A (en) | Electric drive starting system and method of lift-force-type perpendicular shaft wind turbine power generating set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |