CN201402394Y - Fan variable-pitch controller - Google Patents

Fan variable-pitch controller Download PDF

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Publication number
CN201402394Y
CN201402394Y CN200920102358XU CN200920102358U CN201402394Y CN 201402394 Y CN201402394 Y CN 201402394Y CN 200920102358X U CN200920102358X U CN 200920102358XU CN 200920102358 U CN200920102358 U CN 200920102358U CN 201402394 Y CN201402394 Y CN 201402394Y
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circuit
chip
controller
chip microcomputer
wind power
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CN200920102358XU
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Chinese (zh)
Inventor
景崇友
王淼
赵双喜
程志光
王保利
穆桂霞
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Baoding Tianwei Group Co Ltd
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Baoding Tianwei Group Co Ltd
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Abstract

The utility model provides a fan variable-pitch controller, which relates to the technical field of wind power generation devices. The structure of the fan variable-pitch controller includes that interfaces of a TMS320LF2407 single chip microcomputer are respectively connected with a switching value isolation input circuit, an analog value isolation conditioning circuit, a pulse value conditioningcircuit, a serial communication protocol converting circuit and a switching value isolation output circuit capable of being connected with a relay. Besides, the TMS320LF2407 single chip microcomputeris connected with an external control circuit via an RS 485 serial port and a CAN communication drive circuit connected to a main system controller. The switching value isolation input circuit, the analog value isolation conditioning circuit and the pulse value conditioning circuit are respectively connected with sensors thereof. The fan variable-pitch controller can be used to adjust power by controlling the change of a blade angle of attack, and is capable of realizing the starting, stopping and emergency handling of a wind power generator by controlling propeller pitch angles and speeds, thereby enabling the wind power generator to remain in a fine running state.

Description

A kind of variable-pitch controller for wind power generator
Technical field
The utility model relates to the wind power generation plant technical field, is specifically related to a kind of variable-pitch controller for wind power generator.
Background technology
Wind generator system should have flexible change oar ability realizing the control of rotational speed regulation and power, and reduces the mechanical stress of wind turbine and improve the running status of aerogenerator.Yet the variable-pitch controller for wind power generator effect in the at present domestic wind generator system is all undesirable.
Summary of the invention
The purpose of this utility model provides a kind of variable-pitch controller for wind power generator, utilize it can realize flexible and efficient ground capturing wind energy, reduce the mechanical stress of wind turbine, not only can realize the control of rotational speed regulation and power, and can obviously improve the running status of aerogenerator, it is simple in structure, and easy to use, reliable, cost is lower.Be specially adapted on the Large-scale Wind Turbines.
Main technical scheme of the present utility model is: a kind of variable-pitch controller for wind power generator, it is characterized in that having single-chip microcomputer host CPU circuit, the output terminal that the switching value isolation input circuit that links to each other with difference in functionality sensor output terminal, simulation volume are isolated modulate circuit, pulsed quantity modulate circuit links to each other with IO mouth, AD conversion mouth, the seizure mouth of single-chip microcomputer respectively; The switching variable isolation circuit input end that links to each other with its relay and the IO interface of single-chip microcomputer link to each other; The CAN communication interface of single-chip microcomputer links to each other with CAN communication driving circuit, and CAN communication driving circuit can link to each other with system master system device; The serial communication interface of single-chip microcomputer links to each other with the serial communication protocol change-over circuit.
Above-mentioned hardware configuration can be furnished with following software:
The propeller pitch angle position command of self-controller output in the future and propeller pitch angle position feedback through error amplifier relatively after, through the closed-loop control device of proportional valve control propeller pitch angle;
The propeller pitch angle speed command of self-controller is through the open ring control device of proportional valve control propeller pitch angle in the future;
In the time of need reducing propeller pitch angle, controller output speed command voltage signal is given proportioning valve, and hydraulic cylinder makes blade change pitch, and is close to 0 ° of position; When needing to increase propeller pitch angle, controller output speed command voltage signal is given proportioning valve, and hydraulic cylinder makes system device blade change pitch, and is close to 90 ° of positions.
Described single-chip microcomputer is good for the TMS320LF2407 single-chip microcomputer, and the TMS320LF2407 single-chip microcomputer is connected with extraneous control circuit with CAN communication driving circuit by the RS485 serial ports.
Above-mentioned blower variable-pitch can adopt in control, and the LF2407 instruction cycle is 33ns (30MHz), the flash program storage of 32K in the sheet, the data/program RAM of 1.5K word; Two event manager module EVA and EVB; Extendible external memory storage is the 192K word altogether; WatchDog Timer module (WDT); Can programme separately or multiplexing general I/O pin (GPIO) for 40; Controller local area network (CAN) 2.0 modules realize the feather control based on the CAN bus.
Can adopt in the above-mentioned variable-pitch controller for wind power generator, outside vane angle position and motor speed simulating signal are delivered to AD conversion mouthful ADCI01~ADCI04 of TMS320LF2407 at last through low-pass filter MAX4169 and ratio circuit LM324 (amplitude by 10V is reduced into 2.5V); The digital signal of outside 0V/24V is connected to the IO pin of TMS320LF2407 after light-coupled isolation; Pulse signal takes out first-harmonic through the MAX4169 filtering circuit earlier, also is directly connected to the IO pin of TMS320LF2407 again through the clean pulse signal that obtains new same frequency after the hysteresis comparator shaping; The control voltage signal is connected to 74LVTH16245 and DAC7625 chip through address selection mouth, W/R access hole, the DA_CS sheet choosing mouth of D0~D15 data port, A0 and the A1 of TMS320LF2407, change analog voltage output signal into, analog output signal is through low-pass filter MAX4169 and ratio circuit LM324, deliver to proportioning valve at last, hydraulic cylinder makes blade change pitch with fixed rate, realizes becoming the oar function; It is the RS232 communication mode that TMS320LF2407 is connected conversion of signals with SCIRXT with the MAX3223 chip by SCITXD; Being connected conversion of signals with CANRX with the SN65HVD231 chip by CANTX is the CAN communication mode, carries out communication contact with local controller and system master system device respectively, the running status and the service data of transmission wind-powered electricity generation unit, and failure message; The TPS767D3XX chip uses the 5V voltage transitions for the TMS320LF2407 master chip 3.3V supply voltage; The MAX6316 chip directly is connected realization system auto-reset function by WDT with RESET with TMS320LF2407.
Good effect of the present utility model is: utilize it can be from realizing the various functions of variable-pitch controller for wind power generator: 1) pitch angle detection and propeller pitch angle position control; 2) generator power detects and generator power control; 3) communicate by letter with master controller at the bottom of the tower.Utilize it to carry out power adjustments by the change of control attack angle of blade; By propeller pitch angle control and speed control can realize aerogenerator starting, stop and the emergency episode processing, can make aerogenerator be in good running status.Compare with external Zond blower fan technology, the utility model can be realized actual feather software and hardware control system independent development, for the stand-alone development of Chinese large-sized speed-changing oar-changing wind-driven power generation control system has been established technical foundation.Utilize the capturing wind energy that the utility model can be flexible and efficient, reduce the mechanical stress of wind turbine, not only can realize the control of rotational speed regulation and power, and can obviously improve the running status of aerogenerator.And can satisfy the wind power station service requirement, and its stable performance, simple in structure, easy to use, reliable, cost is lower.Be specially adapted on the Large-scale Wind Turbines.
Be described further below in conjunction with drawings and Examples, but not as to qualification of the present utility model.
Description of drawings
Fig. 1 is the hardware structure diagram of feather controller.
Fig. 2 is the circuit diagram of master chip CPU.
Fig. 3 is watchdog reset circuit figure.
Fig. 4, Fig. 5, Fig. 6 are communicating circuit figure.
Fig. 7 is the chip power circuit diagram.
Fig. 8 is signal output apparatus figure.
Fig. 9, Figure 10, Figure 11, Figure 12 are signal input circuit figure.
Figure 13 is a main program flow chart.
More than symbol description among each figure as follows: U1-TMS320LF2407; U2-MAX6316; U4-MAX3223; U5--SN65HVD231; U6-MAX3490; U9-74LVTH16245; U11-DAC7625; U12-LM324; U13-TPS767D3XX; U14-MAX4169; DPA-MAX4169; DPB-MAX4169; The CR1-crystal oscillator; R3 ~ R5-resistance; R8-resistance; R11 ~ R14-resistance; R16 ~ R23-resistance; R25 ~ R26-resistance; R28 ~ R84-resistance; C1 ~ C12-electric capacity; C15 ~ C21-electric capacity; C24 ~ C30-electric capacity; C38-electric capacity; C40-electric capacity; C69 ~ C80-electric capacity; The C23-electrochemical capacitor; C32 ~ C37-electrochemical capacitor; The B1-inductance; B3 ~ B5-inductance; D4 ~ D7-stabilivolt; The S1-keyboard; The P1-serial ports.
Embodiment
Referring to Fig. 1~Figure 12, this feather controller, structure is as described above.It mainly is made up of TMS320LF2407 single-chip microcomputer, RS485, CAN communication and input/output signal circuit.The architecture of TMS320LF2407 aims at real time signal processing and designs.The LF2407 instruction cycle is 33ns (30MHz), the flash program storage of 32K in the sheet, the data/program RAM of 1.5K word; Two event manager module EVA and EVB; Extendible external memory storage is the 192K word altogether; WatchDog Timer module (WDT); Can programme separately or multiplexing general I/O pin (GPIO) for 40; Controller local area network (CAN) 2.0 modules can conveniently realize the feather control based on the CAN bus.
Peripheral circuit in the feather controller mainly comprises the isolation of simulating signal and modulate circuit, the buffer circuit of digital signal, isolation and driving circuit and above-mentioned each circuit etc. of communication interface.Above-mentioned each peripheral circuit also can adopt prior art.Outside vane angle position and motor speed simulating signal are delivered to AD conversion mouthful ADCI01 ~ ADCI04 of TMS320LF2407 at last through low-pass filter MAX4169 and ratio circuit LM324 (amplitude by 10V is reduced into 2.5V); The digital signal of outside 0V/24V is connected to the IO pin of TMS320LF2407 after light-coupled isolation; Pulse signal takes out first-harmonic through the MAX4169 filtering circuit earlier, also is directly connected to the IO pin of TMS320LF2407 again through the clean pulse signal that obtains new same frequency after the hysteresis comparator shaping; The control voltage signal is connected to 74LVTH16245 and DAC7625 chip through address selection mouth, W/R access hole, the DA_CS sheet choosing mouth of D0 ~ D15 data port, A0 and the A1 of TMS320LF2407, change analog voltage output signal into, analog output signal is through low-pass filter MAX4169 and ratio circuit LM324, deliver to proportioning valve at last, hydraulic cylinder makes blade change pitch with fixed rate, realizes becoming the oar function.It is the RS232 communication mode that TMS320LF2407 is connected conversion of signals with SCIRXT with the MAX3223 chip by SCITXD; Being connected conversion of signals with CANRX with the SN65HVD231 chip by CANTX is the CAN communication mode, carries out communication contact with local controller and system master system device respectively, the running status and the service data of transmission wind-powered electricity generation unit, and failure message.The TPS767D3XX chip uses the 5V voltage transitions for the TMS320LF2407 master chip 3.3V supply voltage.The MAX6316 chip directly is connected realization system auto-reset function by WDT with RESET with TMS320LF2407.
Above-mentioned CPU board and power supply/signal plate adopts isolation method.Whole variable-pitch control system can adopt 4 functional modules (together with mechanical part) design, is responsible for power supply, power adjustments, vane angle position, four kinds of different functions of vane angle instruction respectively.On-the-spot test feather controller realized the on-line parameter setting, under automatic running status, push away oar to generate electricity by way of merging two or more grid systems, systemic-functions such as the protection of malfunction feathering, manual vane angle operation, power adjustments.
Controller employing heat radiation, the system in package that electromagnetic wave shielding is good.
Software manual: (referring to Figure 13)
1, software function design
The major function that the pitch controller is finished:
Pitch angle detection and propeller pitch angle position control; Adjusting propeller pitch angle according to the measured value of propeller pitch angle makes it adapt to running status under the different wind friction velocities.
Generator power detects and generator power control; According to the output power of generator, adjustment propeller pitch angle etc. carries out power control automatically.
Communicate by letter with master controller at the bottom of the tower; Carry out data and parameter exchange with master controller at the bottom of the tower.
Software flow pattern, as shown in figure 13.
Because DSP Lf2407 is fixed point CPU, and controller need carry out a large amount of floating-point operations, has adopted the Q form to carry out the numerical value conversion in actual design.
The data mapping table
(1) vane angle (PITCH_pos) corresponding relation:
According to the numeric representation scope of Q form, adopt Q8 form (128=<X=<-127.9960938), the expression scope of vane angle is 96.00~-0.00 degree.Then both members obtains computing formula after multiply by 256 respectively.
Formula one:
Actual sample value=>actual vane angle value
Figure G200920102358XD00051
Figure G200920102358XD00052
Figure G200920102358XD00054
Formula two
Actual sample value=>actual voltage value
Figure G200920102358XD00055
(2) power (POWER_in) corresponding relation:
Sample circuit completely inclined to one side 1023 corresponding 3.3v
Figure G200920102358XD00056
Figure G200920102358XD00058
The corresponding 1000kw of 8v
Figure G200920102358XD00059
Figure G200920102358XD000510
(1) vane angle drives (PITCH_drv) voltage corresponding relation
Figure G200920102358XD00061
(2) output wind speed linear relationship
Wind speed numerical range: 0~30mph
Output area-10v~10v, 0x0000~0x0fff;
0.6V corresponding 1mph, WIND_SPEED*136
2, Content of communciation
System controller sends to the data that become the oar controller and comprises:
1) important parameter of system's operation
Wind speed;
Generator speed;
Environment temperature;
2) running status of system
System state: automatically, standby or shutdown;
The also net state of generator: be incorporated into the power networks or off-grid;
Whether superpower is protected in system;
3) parameter of new change (obtaining) from the interface
The minimum vane angle value that wind energy conversion system reaches;
Vane angle value during the wind energy conversion system standby;
The wind energy conversion system incision is the start angle of operation automatically;
Push away oar (reducing vane angle) voltage;
Feathering (increase vane angle) voltage 1;
Feathering (increase vane angle) voltage 2;
The maximum active power of generator (inform and become the oar controller);
Become the power rating that the oar controller is started working;
Become the oar controller and regulate the power swing scope of power;
Vane angle regulating error scope.
4) system controller comprises from the data that change oar controller reads:
Current actual vane angle value;
Become the current state of oar controller;
The feedback of the data that change oar controller receives.
3, the mode of system controller and the communication of change oar controller
Because system controller and change oar controller are all realized by dsp chip TMS320LF2407, and this chip has carried the CAN communication interface, so system controller is just realized by the CAN bus protocol with the communication that becomes the oar controller.
The key property of CAN bus communication:
1) fieldbus cheaply;
2) high total line use ratio;
3) far data transmission distance (reaching 10Km);
4) high-speed data transmission speed (up to 1Mbps);
5) can receive or shield this message according to the ID decision of message;
6) reliable fault processing and error-detection mechanism;
7) after the information of Fa Songing is destroyed, can retransmit automatically;
8) node has the function that withdraws from bus automatically under wrong serious situation;
9) message does not comprise source address or destination address, only comes deixis information, precedence information with identifier.

Claims (4)

1, a kind of variable-pitch controller for wind power generator, it is characterized in that having single-chip microcomputer host CPU circuit, the output terminal that the switching value isolation input circuit that links to each other with difference in functionality sensor output terminal, simulation volume are isolated modulate circuit, pulsed quantity modulate circuit links to each other with IO mouth, AD conversion mouth, the seizure mouth of single-chip microcomputer respectively; The switching variable isolation circuit input end that links to each other with its relay and the IO interface of single-chip microcomputer link to each other; The CAN communication interface of single-chip microcomputer links to each other with CAN communication driving circuit, and CAN communication driving circuit can link to each other with system master system device; The serial communication interface of single-chip microcomputer links to each other with the serial communication protocol change-over circuit.
2, variable-pitch controller for wind power generator according to claim 1 is characterized in that described single-chip microcomputer is the TMS320LF2407 single-chip microcomputer, and the TMS320LF2407 single-chip microcomputer links to each other with CAN communication driving circuit by the RRS485 string heart.
3, variable-pitch controller for wind power generator according to claim 2, it is characterized in that adopting: be the flash program storage of 32K in the LF2407 sheet, 1.5K the data/program RAM of word, two event manager module EVA and EVB, extendible external memory storage is the 192K word altogether, WatchDog Timer module (WDT) can be programmed or multiplexing general I/O pin (GPIO) controller local area network (CAN) 2.0 modules separately for 40.
4, variable-pitch controller for wind power generator according to claim 3, it is characterized in that outside vane angle position and motor speed simulating signal through low-pass filter MAX4169 and ratio circuit LM324 (amplitude by 10V is reduced into 2.5V), deliver to AD conversion mouthful ADCI01 ~ ADCI04 of TMS320LF2407 at last; The digital signal of outside 0V/24V is connected to the IO pin of TMS320LF2407 after light-coupled isolation; Pulse signal takes out first-harmonic through the MAX4169 filtering circuit earlier, also is directly connected to the IO pin of TMS320LF2407 again through the clean pulse signal that obtains new same frequency after the hysteresis comparator shaping; The control voltage signal is connected to 74LVTH16245 and DAC7625 chip through address selection mouth, W/R access hole, the DA_CS sheet choosing mouth of D0 ~ D15 data port, A0 and the A1 of TMS320LF2407, change analog voltage output signal into, analog output signal is through low-pass filter MAX4169 and ratio circuit LM324, deliver to proportioning valve at last, hydraulic cylinder makes blade change pitch with fixed rate; It is the RS232 communication mode that TMS320LF2407 is connected conversion of signals with SCIRXT with the MAX3223 chip by SCITXD; Being connected conversion of signals with CANRX with the SN65HVD231 chip by CANTX is the CAN communication mode, carries out communication contact with local controller and system master system device respectively; The TPS767D3XX chip uses the 5V voltage transitions for the TMS320LF2407 master chip 3.3V supply voltage; The MAX6316 chip directly is connected with TMS320LF2407 with RESET by WDT.
CN200920102358XU 2009-04-02 2009-04-02 Fan variable-pitch controller Expired - Fee Related CN201402394Y (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102278277A (en) * 2011-06-24 2011-12-14 湘潭世通电气有限公司 Safe logic control device for wind-powered hub
CN104373292A (en) * 2013-08-14 2015-02-25 苏州能健电气有限公司 Simple variable-pitch system
CN105045178A (en) * 2015-07-12 2015-11-11 北京理工大学 Hydraulic cylinder drive circuit apparatus based on DSP (Digital Signal Processor)
CN107264450A (en) * 2017-06-28 2017-10-20 湖北航天技术研究院总体设计所 A kind of car control device and its self-test method
CN113833602A (en) * 2021-09-26 2021-12-24 重庆华昭电气设备有限公司 Manual operation module of variable pitch control system and control method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102278277A (en) * 2011-06-24 2011-12-14 湘潭世通电气有限公司 Safe logic control device for wind-powered hub
CN104373292A (en) * 2013-08-14 2015-02-25 苏州能健电气有限公司 Simple variable-pitch system
CN105045178A (en) * 2015-07-12 2015-11-11 北京理工大学 Hydraulic cylinder drive circuit apparatus based on DSP (Digital Signal Processor)
CN107264450A (en) * 2017-06-28 2017-10-20 湖北航天技术研究院总体设计所 A kind of car control device and its self-test method
CN113833602A (en) * 2021-09-26 2021-12-24 重庆华昭电气设备有限公司 Manual operation module of variable pitch control system and control method thereof

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Granted publication date: 20100210

Termination date: 20120402