CN102011696A - Wind power generating variable-pitch system - Google Patents

Wind power generating variable-pitch system Download PDF

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Publication number
CN102011696A
CN102011696A CN2010105817294A CN201010581729A CN102011696A CN 102011696 A CN102011696 A CN 102011696A CN 2010105817294 A CN2010105817294 A CN 2010105817294A CN 201010581729 A CN201010581729 A CN 201010581729A CN 102011696 A CN102011696 A CN 102011696A
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CN
China
Prior art keywords
port
driver
variable
power generating
wind
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CN2010105817294A
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Chinese (zh)
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CN102011696B (en
Inventor
傅建民
王政
尤林森
肖庆恩
孙明敏
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苏州能健电气有限公司
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Priority to CN201010581729A priority Critical patent/CN102011696B/en
Publication of CN102011696A publication Critical patent/CN102011696A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

The invention provides a wind power generating variable-pitch system. The system comprises blades, connections which correspond to the blades respectively, variable-pitch motors used for adjusting the angles of the corresponding blades, connections which correspond to the variable-pitch motors respectively, variable-pitch driver units used for controlling the motions of the variable-pitch motors, a main control unit which is connected with and controls each variable-pitch driver unit, and a plurality of system I/O ports and system A/D ports, which are used for monitoring the operation of the wind power generating pitch system, wherein the system I/O ports and system A/D ports are arranged in each variable-pitch driver unit. The system provided by the invention has the following beneficial effects: as the system I/O ports and system A/D ports are arranged in the pitch driver units, the idle capacity of the variable-pitch driver units can be fully utilized, the operating efficiency of the system can be increased and the system cost can be reduced.

Description

A kind of wind-power generating variable oar system
Technical field
The present invention relates to a kind of wind-power generating variable oar system, relate in particular to the I/O port and the A/D port of wind-power generating variable oar system.
Background technique
The development prospect of generation of electricity by new energy industry is very wide, and greatly developing wind-powered electricity generation is the emphasis of China's new energy strategy.Wind-power electricity generation develops into the current stage, and how making its cost performance formation and the competitive advantage of coal electricity, water power is the target that the wind-powered electricity generation industry is chased.When improving constantly reliability, reducing cost is the developing direction of all wind power plants.The wind-power generating variable oar system is as one of core component of wind-power electricity generation, and improving reliability, reducing cost also is the emphasis of its technological innovation.
Wind power pitch-controlled system generally comprises a main control unit and three performance elements.The core component of main control unit is a PLC module group.PLC module group generally is made up of host CPU, coder module, I/O module, A/D module and communication module.The core component of three performance elements is variable pitch drivers.
As shown in Figure 1, in wind-force pitch-controlled system in the past, the work of whole pitch-controlled system is all controlled by PLC module group, and PLC module group is controlled the work of variable pitch driver by I/O port signal and analog signals.Variable pitch driver drives the operation of change oar motor according to I/O signal and the analog signals of PLC, changes the angle of three blades, guarantees that wind-driven generator output is in rated power.The operation that pitch-controlled system needs a large amount of I/O ports and A/D port to monitor and control whole pitch-controlled system.The I/O module of PLC module group generally needs the input and output point more than 80, and the A/D module generally needs the analog sampling mouth more than 20, and shared cost is higher, and not backup, and reliability is not very high.Simultaneously, PLC need handle a large amount of I/O signal of exclusive disjunction and A/D signal, and operational efficiency can't improve.
Summary of the invention
At the deficiencies in the prior art, the object of the invention is to provide a kind of reliability height, the wind-power generating variable oar system that cost is low.
For solving the problems of the technologies described above, technological scheme of the present invention is achieved in that a kind of wind-power generating variable oar system, comprises at least one blade; Be connected one to one with described blade, regulate the change oar motor of corresponding blade angle; Be connected one to one with described change oar motor, control becomes the variable pitch driver unit of oar motor action; Connect and control the main control unit of described each variable pitch driver unit; A plurality of system I/O ports and a plurality of system A/D port of the operation of monitoring wind-power generating variable oar system; Described system I/O port and system's A/D port are arranged in each variable pitch driver unit.
Preferably, described main control unit is by the PLC module, and coder module and communication module are formed.
Preferably, the quantity of described blade is 3.
Preferably, described variable pitch driver unit comprises variable pitch driver, I/O port expansion module and A/D port expansion module, described variable pitch driver has driver I/O port and driver A/D port, described I/O expansion module connects driver I/O port, and described system I/O port is positioned on the I/O port expansion module; A/D port expansion module connects driver A/D port and driver A/D port, and described system A/D port is positioned on the A/D port expansion module.
Preferably, described I/O port expansion module comprises also string conversion expansion submodule of at least one string and conversion expansion submodule and at least one, described string and conversion expansion submodule and and the string conversion expand submodule and all be connected 3 driver I/O ports, all have 16 I/O of system ports.
Preferably, described A/D port expansion module comprises at least one differential path analog switching ic, and described differential path analog switching ic connects 2 driver I/O ports and 2 driver A/D ports, has 8 I/O of system ports.
Preferably, have the CAN communication interface respectively on described main control unit and the variable pitch driver unit, the CAN communication interface of described main control unit uses the CAN bus to be connected with the CAN communication interface of variable pitch driver unit.
Preferably, the length of described CAN bus is less than 40 meters.
Preferably, described variable pitch driver unit is provided with 2 input terminals determining the variable pitch driver address.
Compared with prior art, the invention has the beneficial effects as follows: the I/O of system port and system's A/D port are arranged in the pitch driver unit, make full use of the idle capacity of variable pitch driver unit, the I/O port and the A/D port of main control unit have been cancelled, thereby improved running efficiency of system, reduced system cost.
Further beneficial effect of the present invention is: expand by driver I/O port and driver A/D port to variable pitch driver, increased the quantity of system I/O port and the A/D of system port; Utilize the existing CAN communication interface in driver and PLC unit, set up the CAN bus, variable pitch driver unit and main control unit exchange the input/output signal and the analog sampling signal of whole pitch-controlled system by the CAN communication, guarantee main control unit control whole system.
Simultaneously, the wind-power generating variable oar system has three variable pitch drivers, and every driver only need be expanded the I/O port and the A/D port of 1/3 demand, and signal of interest can back up and fault-tolerant processing mutually by three drivers, has improved reliability; Part signal can directly be handled exclusive disjunction by three variable pitch drivers, changed all I/O signals of former wind-power generating variable oar system and A/D signal and all will handle the operating mode of exclusive disjunction by main control unit, improve the efficient of main control unit operation, strengthened the ageing of wind-power generating variable oar system operation.
Description of drawings
Fig. 1 is the wind generating variable-propeller system module figure of prior art.
Fig. 2 is the wind generating variable-propeller system module figure of the specific embodiment of the present invention.
Fig. 3 is the serial-parallel conversion circuit circuit diagram of the specific embodiment of the present invention.
Fig. 4 is the differential path analog switching ic circuit diagram of the specific embodiment of the present invention.
1, variable pitch driver 7, expansion I/O output circuit
3, serial-parallel conversion circuit 9, differential path analog switching ic
5, data-latching circuit 11, simulated measurement input circuit
Embodiment
Mode with example describes the specific embodiment of the present invention with reference to the accompanying drawings.
The wind-power generating variable oar system of embodiment comprises blade, becomes oar motor, variable pitch driver unit and main control unit.
With reference to Fig. 2, blade needs 1 at least, is generally 3, change oar motor of regulating this blade angle of the connection of each blade correspondence; Each becomes the variable pitch driver unit of this change oar motor action of control of connection of oar motor correspondence; And main control unit connects and control each variable pitch driver unit.
Main control unit is by PLC module (being the PLC host CPU), and coder module and communication module are formed.
Be provided with variable pitch driver 1, I/O port expansion module (being I/O expansion mouth) and A/D port expansion module (being A/D expansion mouth) in the variable pitch driver unit.I/O port expansion module is provided with a plurality of system I/O ports, and A/D port expansion module is provided with a plurality of system A/D ports.A plurality of system I/O ports and a plurality of system A/D port are used for acquisition system information and environmental information, the operation of monitoring wind-power generating variable oar system.Also be provided with address bit in the variable pitch driver unit.
More specifically, variable pitch driver 1 has driver I/O port and driver A/D port, and the I/O expansion module connects driver I/O port; A/D port expansion module connects driver A/D port and driver A/D port.
I/O port expansion module comprises also string conversion expansion submodule of at least one string and conversion expansion submodule and at least one, string and conversion expansion submodule are used for expanding the output port of the driver I/O port of variable pitch driver 1, and string conversion expansion submodule is used for expanding the input port of the driver I/O port of variable pitch driver 1.String and conversion expansion submodule and and the string conversion expand submodule and all be connected 3 driver I/O ports, all have 16 I/O of system ports.
Fig. 3 has disclosed a concrete string and conversion expansion submodular circuits figure, string also conversion expansion submodule connects 3 driver I/O ports of variable pitch driver 1, comprises interconnective two serial-parallel conversion circuits 3, two data latch cicuits 5 and two expansion I/O output circuits 7.Have 8 I/O of system ports on each expansion I/O output circuit 7.
A/D port expansion module comprises at least one differential path analog switching ic 9, and differential path analog switching ic 9 connects 2 driver I/O ports and 2 driver A/D ports, has 8 A/D of system ports.
Fig. 4 has disclosed concrete differential path analog switching ic 9 circuit connection diagrams.Differential path analog switching ic 9 connects 2 driver I/O ports and 2 driver A/D ports of variable pitch driver 1, has 8 A/D of system ports, and 8 A/D of system ports connect a simulated measurement input circuit 11.
Have the CAN communication interface respectively on described main control unit and the variable pitch driver unit, the CAN communication interface of described main control unit uses the CAN bus to be connected with the CAN communication interface of variable pitch driver unit, formulates communications protocol.Like this, the I/O signal and the A/D signal of main control unit and variable pitch driver 1 can be transmitted or control by the CAN bus, and do not need the PLC module unification of main control unit to handle.
In pitch-controlled system, CAN bus transfer between variable pitch driver unit and main control unit distance is less than 40 meters, so communication speed can reach 1M/S, can satisfy the requirement of pitch-controlled system to each control signal response time fully.
The variable pitch driver unit is provided with 2 input terminals determining variable pitch driver 1 address, and in order to set three variable pitch driver 1 addresses separately in the same pitch-controlled system, the PLC module is come the identification signal source by two bit address sign indicating numbers in the CAN communication.The address setting of variable pitch driver 1 adopts the mode of terminal connections, as long as purpose is a variable pitch driver 1 just to be loaded onto and can confirm its address automatically, has so just kept the versatility of variable pitch driver 1.
More specifically, variable pitch driver 1 is the DSP2812CPU chip of TI company, this chip is 32 very powerful fixed DSPs of a function, it had both had digital signal processing capability, had powerful incident management ability and embedded Control function again, was specially adapted to the observing and controlling occasion of data processing in enormous quantities, have 176 pins, dominant frequency can reach 150M, the AD sampling of 16 passages, and precision can reach 12.
Although be the example purpose, preferred implementation of the present invention is disclosed, but those of ordinary skill in the art will recognize that under situation about not breaking away from by the disclosed scope and spirit of the present invention of appending claims, various improvement, increase and replacement are possible.

Claims (9)

1. a wind-power generating variable oar system comprises,
At least one blade;
Be connected one to one with described blade, regulate the change oar motor of corresponding blade angle;
Be connected one to one with described change oar motor, control becomes the variable pitch driver unit of oar motor action;
Connect and control the main control unit of described each variable pitch driver unit;
A plurality of system I/O ports and a plurality of system A/D port of the operation of monitoring wind-power generating variable oar system;
It is characterized in that described system I/O port and system's A/D port are arranged in each variable pitch driver unit.
2. according to a kind of wind-power generating variable oar system described in the claim 1, it is characterized in that: described main control unit is by the PLC module, and coder module and communication module are formed.
3. according to a kind of wind-power generating variable oar system described in the claim 1, it is characterized in that: the quantity of described blade is 3.
4. according to a kind of wind-power generating variable oar system described in the claim 1, it is characterized in that: described variable pitch driver unit comprises variable pitch driver, I/O port expansion module and A/D port expansion module, described variable pitch driver has driver I/O port and driver A/D port, described I/O expansion module connects driver I/O port, and described system I/O port is positioned on the I/O port expansion module; A/D port expansion module connects driver A/D port and driver A/D port, and described system A/D port is positioned on the A/D port expansion module.
5. according to a kind of wind-power generating variable oar system described in the claim 4, it is characterized in that: described I/O port expansion module comprises also string conversion expansion submodule of at least one string and conversion expansion submodule and at least one, described serial-parallel conversion circuit all is connected 3 driver I/O ports with parallel-to-serial converter, all has 16 I/O of system ports.
6. according to a kind of wind-power generating variable oar system described in the claim 4, it is characterized in that: described A/D port expansion module comprises at least one differential path analog switching ic, described differential path analog switching ic connects 2 driver I/O ports and 2 driver A/D ports, has 8 I/O of system ports.
7. according to a kind of wind-power generating variable oar system described in the claim 1, it is characterized in that: have the CAN communication interface respectively on described main control unit and the variable pitch driver unit, the CAN communication interface of described main control unit uses the CAN bus to be connected with the CAN communication interface of variable pitch driver unit.
8. according to a kind of wind-power generating variable oar system described in the claim 7, it is characterized in that: the length of described CAN bus is less than 40 meters.
9. according to a kind of wind-power generating variable oar system described in the claim 1, it is characterized in that: described variable pitch driver unit is provided with 2 input terminals determining the variable pitch driver address.
CN201010581729A 2010-12-10 2010-12-10 Wind power generating variable-pitch system CN102011696B (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102338032A (en) * 2011-09-08 2012-02-01 江苏金风风电设备制造有限公司 Electric blade-changing system of wind generating set
CN102385339A (en) * 2011-09-22 2012-03-21 苏州能健电气有限公司 Programmable logic controller (PLC) controlling system and temperature signal collection circuit thereof
CN102384025A (en) * 2011-09-22 2012-03-21 苏州能健电气有限公司 Programmable logic control (PLC) control system
CN102385340A (en) * 2011-09-22 2012-03-21 苏州能健电气有限公司 Programmable logic controller (PLC) controlling system and signal collection circuit thereof
CN102392784A (en) * 2011-09-22 2012-03-28 苏州能健电气有限公司 PLC (programmable logic controller) control system for pitch control systems
CN102635500A (en) * 2012-04-25 2012-08-15 广东明阳龙源电力电子有限公司 Fan electric control system and fan converter integrated control topology
CN103066675A (en) * 2011-10-20 2013-04-24 苏州能健电气有限公司 Alternating current driver charging circuit of wind power alternating current variable pitch system
CN103161664A (en) * 2011-12-19 2013-06-19 苏州能健电气有限公司 Wind power variable propeller system serial-to-parallel conversion circuit
CN104373292A (en) * 2013-08-14 2015-02-25 苏州能健电气有限公司 Simple variable-pitch system
CN105467896A (en) * 2015-12-25 2016-04-06 大连尚能科技发展有限公司 Integrated control system of wind-power low-voltage variable pitch blade
CN103670920B (en) * 2012-09-06 2016-06-01 台达电子工业股份有限公司 The blade zero point backup of wind-driven variable pitch system and wind-driven variable pitch system and restoration methods
CN106405414A (en) * 2016-08-23 2017-02-15 固安华电天仁控制设备有限公司 Integrated automatic test device for wind pitch motor

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102338032A (en) * 2011-09-08 2012-02-01 江苏金风风电设备制造有限公司 Electric blade-changing system of wind generating set
CN102385339A (en) * 2011-09-22 2012-03-21 苏州能健电气有限公司 Programmable logic controller (PLC) controlling system and temperature signal collection circuit thereof
CN102384025A (en) * 2011-09-22 2012-03-21 苏州能健电气有限公司 Programmable logic control (PLC) control system
CN102385340A (en) * 2011-09-22 2012-03-21 苏州能健电气有限公司 Programmable logic controller (PLC) controlling system and signal collection circuit thereof
CN102392784A (en) * 2011-09-22 2012-03-28 苏州能健电气有限公司 PLC (programmable logic controller) control system for pitch control systems
CN103066675A (en) * 2011-10-20 2013-04-24 苏州能健电气有限公司 Alternating current driver charging circuit of wind power alternating current variable pitch system
CN103161664A (en) * 2011-12-19 2013-06-19 苏州能健电气有限公司 Wind power variable propeller system serial-to-parallel conversion circuit
CN102635500A (en) * 2012-04-25 2012-08-15 广东明阳龙源电力电子有限公司 Fan electric control system and fan converter integrated control topology
CN103670920B (en) * 2012-09-06 2016-06-01 台达电子工业股份有限公司 The blade zero point backup of wind-driven variable pitch system and wind-driven variable pitch system and restoration methods
US9453498B2 (en) 2012-09-06 2016-09-27 Delta Electronics, Inc. Method for backing up and recovering blade zero point of pitch drive system for wind turbine and pitch drive system for wind turbine
CN104373292A (en) * 2013-08-14 2015-02-25 苏州能健电气有限公司 Simple variable-pitch system
CN105467896A (en) * 2015-12-25 2016-04-06 大连尚能科技发展有限公司 Integrated control system of wind-power low-voltage variable pitch blade
CN106405414A (en) * 2016-08-23 2017-02-15 固安华电天仁控制设备有限公司 Integrated automatic test device for wind pitch motor

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