CN202545112U - Novel variable-pitch control device with low voltage ride-through capacity - Google Patents
Novel variable-pitch control device with low voltage ride-through capacity Download PDFInfo
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- CN202545112U CN202545112U CN2012201619250U CN201220161925U CN202545112U CN 202545112 U CN202545112 U CN 202545112U CN 2012201619250 U CN2012201619250 U CN 2012201619250U CN 201220161925 U CN201220161925 U CN 201220161925U CN 202545112 U CN202545112 U CN 202545112U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a novel variable-pitch control device with low voltage ride-through capacity. Peripheral equipment comprises a shaft cabinet, an A-phase and B-phase current sensor, a grid voltage sensor, an absolute and incremental encoder and a variable-pitch motor. The variable-pitch control device comprises a controller, a power management module, a memory module, a communication module, a current signal conditioning circuit, a voltage signal conditioning circuit, a speed signal conditioning circuit, a switching value signal conditioning circuit, a space vector pulse width modulation (SVPWM) output module, an intelligent power module, a rectification module and a standby battery. The novel variable-pitch control device has the advantages that a control command which is sent by a fan master controller is directly received, selection and control in a controller mode are performed by detecting the A-phase and B-phase stator current of a generator, the rotating speed of a rotor of the generator and grid voltage, the control accuracy, response speed and reliability of a variable-pitch system and the low voltage ride-through capacity of a wind power generator unit can be ensured, and the generation efficiency and electric energy quality of the whole wind power generator unit are improved.
Description
Technical field
The utility model relates to wind generating variable-propeller control field, particularly, relates to a kind of novel change oar control gear with low voltage ride-through capability.
Background technique
Progress along with the wind-powered electricity generation machine set technology; Wind-powered electricity generation unit single-machine capacity constantly increases, and wind-powered electricity generation factory rules and regulations mould constantly enlarges, and wind-powered electricity generation shared ratio in electrical network has obtained rapid raising; The wind-electricity integration criterion of present many countries was all proposed higher requirement to wind energy turbine set: when electric network fault or disturbance cause that the voltage of wind farm grid-connected point falls; In the scope that voltage falls, the wind-powered electricity generation unit can be in the certain hour scope continuous service and off-grid not go into overdrive simultaneously to carry idle participation Voltage control to electrical network; And behind failure removal, can help power system recovery stable operation as early as possible, that is to say that the wind-powered electricity generation unit will have the ability that low voltage is passed through.
The model utility content
To the problems referred to above; The utility model proposes a kind of novel change oar control gear with low voltage ride-through capability; Carry out the selection and the control of director mode through detection generator A, B phase stator current, generator amature rotating speed, line voltage, be implemented in normal mode, emergency shutdown pattern and low voltage and pass through the change oar control under the pattern; And can ensure the control accuracy of pitch-controlled system, speed of response, the low voltage ride-through capability of reliability and wind power generating set finally improves the generating efficiency and the quality of power supply of whole wind power generating set.
For realizing above-mentioned purpose, the technological scheme that is adopted is:
A kind of novel change oar control gear with low voltage ride-through capability; Its peripheral unit comprises a cabinet; A, B phase current sensor; The line voltage sensor; Absolute type, incremental encoder become the oar motor, and said control gear comprises controller, power management module, memory module, communication module, current signal conditioning circuit, voltage signal conditioning circuit, rate signal conditioning circuit, switching value signal conditioning circuit, SVPWM output module, SPM, rectification module, backup battery; Said controller is electrically connected with described power management module, memory module, communication module; The input end of said current signal conditioning circuit is connected electrically in the output terminal of said A, B phase current sensor, and the output terminal of this current signal conditioning circuit is connected electrically on the said controller; The input end of said voltage signal conditioning circuit is connected electrically in the output terminal of said line voltage sensor, and the output terminal of this voltage signal conditioning circuit is connected electrically on the controller; The input end of said rate signal conditioning circuit is connected electrically in the output terminal of said absolute type, incremental encoder, and the output terminal of this rate signal conditioning circuit is connected electrically on the controller; Switching value signal in said switching value signal conditioning circuit and described controller, the axle cabinet is electrically connected; Said SVPWM output module is connected electrically in respectively on said SPM and the controller; Line voltage is realized being electrically connected through said rectification module and said SPM; Said backup battery is electrically connected respectively with said controller and SPM; Described SPM is electrically connected on described change oar motor.
Said current signal conditioning circuit is the conditioning circuit of 4 road current input signals.
Said voltage signal conditioning circuit is the conditioning circuit of 3 road voltage input signals.
Said rate signal conditioning circuit is the conditioning circuit of 2 tunnel speed input signals.
Saidly state the conditioning circuit that the switching value signal conditioning circuit is 8 way switch amount input signals.
Said controller adopts the dual processor framework of DSP and FPGA.
The utility model is implemented in normal mode, emergency shutdown pattern and low voltage and passes through the change oar control under the pattern through the rotor speed that detects generator unit stator A, B phase current, generator, selection and the execution control corresponding that line voltage carries out director mode; And can ensure the control accuracy of pitch-controlled system, speed of response, the low voltage ride-through capability of reliability and wind power generating set finally improves the generating efficiency and the quality of power supply of whole wind power generating set.
Description of drawings
Fig. 1 is the utility model control gear structured flowchart schematic representation;
Fig. 2 is the flow chart of the utility model controlling method.
Fig. 3 is the voltage profile curve of the described regulation of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
A kind of novel change oar control gear with low voltage ride-through capability, its peripheral unit comprises a cabinet, A, B phase current sensor, line voltage sensor, absolute type, incremental encoder; Become the oar motor, said change oar control gear comprises controller, power management module, memory module, communication module; The current signal conditioning circuit, voltage signal conditioning circuit, rate signal conditioning circuit, switching value signal conditioning circuit; The SVPWM output module, SPM, rectification module, backup battery; Said controller is electrically connected with described power management module, memory module, communication module; The input end of said current signal conditioning circuit is connected electrically in the output terminal of said A, B phase current sensor, and the output terminal of this current signal conditioning circuit is connected electrically on the said controller; The input end of said voltage signal conditioning circuit is connected electrically in the output terminal of said line voltage sensor, and the output terminal of this voltage signal conditioning circuit is connected electrically on the controller; The input end of said rate signal conditioning circuit is connected electrically in the output terminal of said absolute type, incremental encoder, and the output terminal of this rate signal conditioning circuit is connected electrically on the controller; Switching value signal in said switching value signal conditioning circuit and described controller, the axle cabinet is electrically connected; Said SVPWM output module is connected electrically in respectively on said SPM and the controller; Line voltage is realized being electrically connected through said rectification module and said SPM; Said backup battery is electrically connected respectively with said controller and SPM; Described SPM is electrically connected on described change oar motor.
Wherein:
Said current signal conditioning circuit is the conditioning circuit of 4 road current input signals; Its will be through A, B phase current sensor A, the B phase stator current signal of generator, the A, B phase rotor current signal that becomes the oar motor exports to the analog-to-digital conversion module of controller after through filtering and processing and amplifying.
Said voltage signal conditioning circuit is the conditioning circuit of 3 road voltage input signals, and it will export to controller after will passing through filtering and processing and amplifying through the mains voltage signal of said line voltage sensor.
Said rate signal conditioning circuit is the conditioning circuit of 2 tunnel speed input signals, and the spinner velocity signal of the generator that it will be through said absolute type, incremental encoder, the spinner velocity signal that becomes the oar motor are exported to controller after through filtering and processing and amplifying.
Said switching value signal conditioning circuit is the conditioning circuit of 8 way switch amount input signals, and it will export to controller after the switching value signal of axle cabinet output is isolated certainly through photoelectricity.
Said controller adopts the dual processor framework of DSP and FPGA, by DSP and FPGA associated treatment, accomplishes the selection and the control of whole variable blade control system control mode; The control accuracy and the real-time of variable blade control system have been improved; Wherein the address wire of DSP and FPGA, datawire, guide line are electrically connected, and can realize the information interaction between them easily, and DSP mainly accomplishes the current signal after current signal conditioning circuit, voltage signal conditioning circuit, the conditioning of rate signal conditioning circuit; Voltage signal; The analog-to-digital conversion of rate signal, and judge that realization normal mode, low voltage are passed through the change oar control under pattern, the emergency shutdown pattern; FPGA mainly is responsible for the collection and the control of switching value signal in the axle cabinet, accomplishes the intercommunication mutually between variable blade control system and the wind-power electricity generation master control.Described FPGA adopts cyclone II series circuit; Be that altera corp is fundamentally to the low-cost high-performance that designs and the FPGA of low power consumption; Free Quartus II network edition design software, multiple intellectual property (IP) by easy to use provide support, and can realize low-cost FPGA solution development rapidly.
DSP adopts the C2000 series of TI; It adopts high performance static CMOS technology, 150MHz oscillation frequency (6.67ns instruction cycle) low power dissipation design, high performance 32 bit CPUs; The peripheral expanded function of interrupting can be supported 45 peripheral interruptions; Electric Machine Control peripheral (EVA and EVB), 12 A/D converters, 16 passages.
Said power management module: for whole pitch-controlled system provides+5V ,+3.3V ,+1.9V ,+15V ,-15V ,+24V power supply;
Said communication module: adopt communication modes such as RS232, RS485, profibus-DP, CANopen, realize the intercommunication mutually between variable blade control system and the wind-power electricity generation master control;
Said memory module: corresponding program and data space are provided for becoming the oar controller;
The controlling method of the utility model may further comprise the steps:
Said current signal conditioning circuit will be exported to controller through generator A, the B phase stator current signal of A, B phase current sensor after filter amplifying processing;
Said rate signal conditioning circuit will be exported to controller through the generator amature tach signal of said absolute type, incremental encoder after filter amplifying processing;
Said voltage signal conditioning circuit will be exported to controller through the mains voltage signal of said line voltage sensor after filter amplifying processing;
Controller converts described generator A, B phase stator current signal, generator amature tach signal, mains voltage signal into digital signal; Afterwards, this controller is judged:
Whether said generator A, B phase stator current signal surpassed 40ms greater than rated current and endurance of 2 times;
Whether said generator amature tach signal has surpassed 40ms greater than rated speed and endurance of 1.1 times;
If said generator A, B phase stator current signal have surpassed 40ms greater than 2 times rated current and endurance; Perhaps said generator amature tach signal has surpassed 40ms greater than 1.1 times rated speed and endurance; Then said controller gets into the emergency shutdown pattern; According to given feathering speed, adopt three closed loop controls based on transform vector and SVPWM, realize feathering; Otherwise whether this controller is judged described line voltage and is fallen;
If described line voltage does not fall, then controller gets into normal mode, adopts three closed loop controls based on transform vector and SVPWM, according to the change oar speed under the given normal mode, realizes becoming oar control; Otherwise controller is judged described line voltage and is fallen the voltage profile curve that whether is lower than regulation; Guarantee that the wind-powered electricity generation unit can guarantee that when the point voltage that is incorporated into the power networks falls to 20% voltage rating off-grid does not move 625ms continuously; And if wind farm grid-connected point voltage can return to 90% o'clock of voltage rating in the 3s falling the back, wind-powered electricity generation unit not off-grid moves continuously.
If described line voltage falls the voltage profile curve that is lower than regulation, then said controller gets into the emergency shutdown pattern, according to given feathering speed, adopts three closed loop controls based on transform vector and SVPWM, realizes feathering; Otherwise this controller gets into low voltage and passes through pattern; Start said back-up power and supply power,, pass through the change oar speed under the pattern according to given low voltage through relevant fault is shielded to pitch-controlled system; Employing realizes becoming oar control based on three closed loop controls of transform vector and SVPWM.
Three closed loop controls based on transform vector and SVPWM; Method below adopting: the current signal conditioning circuit will be exported to controller through change oar motor A, the B phase rotor current signal of A, B phase current sensor after filter amplifying processing, realize current inner loop control; The rate signal conditioning circuit will be exported to controller through the change oar rotor tach signal of said absolute type, incremental encoder after filter amplifying processing, time outer shroud control of realization speed and the control of position outer shroud.
What should explain at last is: the above is merely the preferred embodiment of the utility model; Be not limited to the utility model; Although the utility model has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technological scheme that aforementioned each embodiment put down in writing, and perhaps part technical characteristics wherein is equal to replacement.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (6)
1. novel change oar control gear with low voltage ride-through capability, its peripheral unit comprises a cabinet, A, B phase current sensor, line voltage sensor; Absolute type, incremental encoder become the oar motor, and it is characterized in that: said control gear comprises controller, power management module; Memory module, communication module, current signal conditioning circuit, voltage signal conditioning circuit; The rate signal conditioning circuit, switching value signal conditioning circuit, SVPWM output module; SPM, rectification module, backup battery; Said controller is electrically connected with described power management module, memory module, communication module; The input end of said current signal conditioning circuit is connected electrically in the output terminal of said A, B phase current sensor, and the output terminal of this current signal conditioning circuit is connected electrically on the said controller; The input end of said voltage signal conditioning circuit is connected electrically in the output terminal of said line voltage sensor, and the output terminal of this voltage signal conditioning circuit is connected electrically on the controller; The input end of said rate signal conditioning circuit is connected electrically in the output terminal of said absolute type, incremental encoder, and the output terminal of this rate signal conditioning circuit is connected electrically on the controller; Switching value signal in said switching value signal conditioning circuit and described controller, the axle cabinet is electrically connected; Said SVPWM output module is connected electrically in respectively on said SPM and the controller; Line voltage is realized being electrically connected through said rectification module and said SPM; Said backup battery is electrically connected respectively with said controller and SPM; Described SPM is electrically connected on described change oar motor.
2. a kind of novel change oar control gear with low voltage ride-through capability according to claim 1, it is characterized in that: said current signal conditioning circuit is the conditioning circuit of 4 road current input signals.
3. a kind of novel change oar control gear with low voltage ride-through capability according to claim 1, it is characterized in that: said voltage signal conditioning circuit is the conditioning circuit of 3 road voltage input signals.
4. a kind of novel change oar control gear with low voltage ride-through capability according to claim 1, it is characterized in that: said rate signal conditioning circuit is the conditioning circuit of 2 tunnel speed input signals.
5. a kind of novel change oar control gear with low voltage ride-through capability according to claim 1, it is characterized in that: said switching value signal conditioning circuit is the conditioning circuit of 8 way switch amount input signals.
6. a kind of novel change oar control gear with low voltage ride-through capability according to claim 1 is characterized in that: said controller adopts the dual processor framework of DSP and FPGA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201619250U CN202545112U (en) | 2012-04-17 | 2012-04-17 | Novel variable-pitch control device with low voltage ride-through capacity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201619250U CN202545112U (en) | 2012-04-17 | 2012-04-17 | Novel variable-pitch control device with low voltage ride-through capacity |
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| CN202545112U true CN202545112U (en) | 2012-11-21 |
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| CN2012201619250U Expired - Fee Related CN202545112U (en) | 2012-04-17 | 2012-04-17 | Novel variable-pitch control device with low voltage ride-through capacity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619686A (en) * | 2012-04-17 | 2012-08-01 | 兰州交通大学 | Novel pitch control device with low-voltage ride through capability and control method |
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2012
- 2012-04-17 CN CN2012201619250U patent/CN202545112U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619686A (en) * | 2012-04-17 | 2012-08-01 | 兰州交通大学 | Novel pitch control device with low-voltage ride through capability and control method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20140417 |