CN103511182B - A kind of wind power generating set direct current variable pitch control system - Google Patents
A kind of wind power generating set direct current variable pitch control system Download PDFInfo
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- CN103511182B CN103511182B CN201310017012.0A CN201310017012A CN103511182B CN 103511182 B CN103511182 B CN 103511182B CN 201310017012 A CN201310017012 A CN 201310017012A CN 103511182 B CN103511182 B CN 103511182B
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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 invention discloses a kind of wind power generating set direct current variable pitch control system, this wind power generating set direct current variable pitch control system stage can carry out control of putting away the oars, energy savings module (C) stored up electric energy is made to need output by control, thus bigger energy savings module (C) stored up electric energy can efficient, more reasonably be used, when electric energy is certain, obtain bigger angle of putting away the oars, increase the safety of wind power generating set；Simultaneously, it is to avoid the impact injury to pitch motor (M) of big electric current when directly putting away the oars, it is effectively protected pitch motor (M) and extends the service life of pitch motor (M).
Description
Technical field
The present invention relates to wind generating set pitch control from control field, particularly relate to a kind of wind power generating set direct current variable pitch control system, this control system is mainly used in carrying out stage putting away the oars when main power source departs from wind power generating set
Background technology
In wind generator system, electric control part subpackage is containing following several parts: master control system, variable-pitch control system and current transformer.Variable-pitch control system, is used for the angle controlling and converting blade to be issued to the wind-power electricity generation power of optimum at different wind speed.Specifically, namely the pitch drive driven by motor floating bearing by installing between blade and wheel hub rotates thus changing blade incidence, thus controls the lift of blade, to reach the purpose of control action moment of torsion on wind wheel blade and power.Variable blade control system is the basic control system of wind power generating set.
In wind energy turbine set running, it sometimes appear that wind power generating set departs from main power source, blade is not yet put away the oars by variable-pitch control system and is returned to the situation of feather position simultaneously, and when occurring in this kind of situation, usual way is: wind power generating set direct current variable pitch control system usually stores module source either directly through energy, pitch motor is directly driven to carry out emergency propeller retraction action, the blower fan risk caused to avoid blade not put away the oars feather position.
But, module source is stored in the moment directly initiating pitch motor at energy, it is carried in the decades of times that the current value in pitch motor often reaches the rated current of pitch motor, common direct emergency propeller retraction mode is not only very big to the impact of pitch motor, extremely easily caused by the security incident of wind power generating set, and affect the service life of pitch motor.How designing a kind of is put have to solve the technical problem that in face of us overcoming the control system of drawbacks described above and method thereof, and the present invention, by proposing the control strategy of putting away the oars of a kind of stage variable-pitch control system, can efficiently solve the problems referred to above.
Summary of the invention
It is an object of the invention to the defect existed for above-mentioned background technology, it is provided that a kind of under main power source with wind power generating set disengaging situation, the variable-pitch control system of stage emergency propeller retraction control can be carried out.
For achieving the above object, the first embodiment of the present invention a kind of wind power generating set direct current variable pitch control system includes industrial alternating current power supply (L1, L2, L3, N), an energy storage module (C), a servo-driver (P1) and one first loop (DF), industrial alternating current power supply (L1, L2, L3) is directly connected with the AC-powered end of servo-driver (P1), and described wind power generating set direct current variable pitch control system is connected with pitch motor (M) by servo-driver (P1).This wind power generating set direct current variable pitch control system farther includes the first power transfer module (G1), second source modular converter (G2), the 3rd power transfer module (G3), the variable pitch control circuit (CR1) with stage function of putting away the oars and second servo loop (PF)；The input of second source modular converter (G2) is connected in industry alternating current power supply (L1 and N), the outfan of second source modular converter (G2) is connected on the electric energy feed end of variable pitch control circuit (CR1), 3rd power transfer module (G3) input is connected between energy storage module (C) and servo-driver (P1) powered by direct current end, and the 3rd power transfer module (G3) outfan is connected on the electric energy feed end of variable pitch control circuit (CR1)；Energy storage module (C) and the outfan of the first power transfer module (G1), servo-driver (P1) DC power supply terminal, the first loop (DF) input be connected；Second servo loop (PF) input is connected with servo-driver (P1) outfan, and outfan is connected with pitch motor (M).
In sum, one wind power generating set direct current variable pitch control system of the present invention stage can carry out control of putting away the oars, energy savings module (C) stored up electric energy is made to need output by control, thus bigger energy savings module (C) stored up electric energy can efficient, more reasonably be used, when electric energy is certain, obtain bigger angle of putting away the oars, increase the safety of wind power generating set；Simultaneously, it is to avoid the impact injury to pitch motor (M) of big electric current when directly putting away the oars, it is effectively protected pitch motor (M) and extends the service life of pitch motor (M).
Accompanying drawing explanation
Fig. 1 is the electrical structure schematic diagram of a kind of wind power generating set direct current variable pitch control system first embodiment of the present invention.
The startup stage that Fig. 2 being first embodiment of the invention formula put away the oars control time electrical structure schematic diagram.
The startup stage that Fig. 3 being first embodiment of the invention formula put away the oars control time schematic flow sheet.
Fig. 4 is first embodiment of the invention electrical structure schematic diagram when carrying out direct emergency propeller retraction.
Fig. 5 is the electrical structure schematic diagram of a kind of wind power generating set direct current variable pitch control system the second embodiment of the present invention.
Detailed description of the invention
By describing the technology contents of the present invention, structural feature in detail, being reached purpose and effect, hereby enumerate embodiment below and coordinate accompanying drawing to be explained in detail.
Referring to Fig. 1 to Fig. 5, it is the first preferred embodiment of a kind of wind power generating set direct current variable pitch control system of the present invention.
One wind-driven generator direct current variable pitch control system of the present invention includes industry alternating current power supply (L1, L2, L3 and N), the first power transfer module (G1), second source modular converter (G2), the 3rd power transfer module (G3), an energy storage module (C), a servo-driver (P1), has the variable pitch control circuit (CR1) of stage function of putting away the oars, the first loop (DF), second servo loop (PF).
Industrial alternating current power supply (L1, L2, L3 and N) is as the main power source of variable-pitch control system, and energy storage module (C) is as the back-up source of variable-pitch control system.
Two subcircuits are had between industry alternating current power supply (L1, L2, L3 and N) and servo-driver (P1), one branch road is the circuit being sequentially connected with composition with second source modular converter (G2) and variable pitch control circuit (CR1), and another branch road is the circuit being sequentially connected with composition with the first power transfer module (G1) and energy storage module (C).
3rd power transfer module (G3) input is connected between energy storage module (C) and servo-driver (P1) powered by direct current end, and the 3rd power transfer module (G3) outfan is connected on the electric energy feed end of variable pitch control circuit (CR1).When main power source departs from wind power generating set, the 3rd power transfer module (G3) is for changing the electric energy that energy storage module (C) stores and export to variable pitch control circuit (CR1).
Servo-driver (P1) powered by direct current end is connected with energy storage module (C), AC-powered end is connected with alternating current power supply (L1, L2, L3), controlling end to be connected with variable pitch control circuit (CR1), outfan is connected with second servo loop (PF) input.
Second servo loop (PF) input is connected to servo-driver (P1), and outfan is connected with pitch motor (M).
First loop (DF) input is connected between the circuit of energy storage module (C) and servo-driver (P1), and the first loop (DF) outfan is connected in pitch motor (M).
Wind generating set pitch control of the present invention is electrically connected to each other by servo-driver (P1) and pitch motor (M) from controlling system.
Specifically, the first power transfer module (G1) and second source modular converter (G2) are ac/dc conversion module；3rd power transfer module (G3) is DC/DC conversion module.
Energy storage module (C) is any one in super capacitor and accumulator.
First loop (DF) and second servo loop (PF) can be the combination of any one or at least two in catalyst, controllable silicon, integrated break-make device.
Refer to Fig. 3, first power transfer module (G1) input is connected with industrial alternating current power supply (L1 and N), first power transfer module (G1) outfan is connected with energy storage module (C), for charging to energy storage module (C).
The power supply of industrial alternating current power supply (L1, L2, L3 and N) variable-pitch control system under normal circumstances.When main power source does not depart from wind power generating set, industrial alternating current power supply (L1, N) can be passed through the first power transfer module (G1) and store module (C) charging to energy；Industrial alternating current power supply (L1, L2, L3) is for providing electric energy for variable pitch by servo-driver (P1) to pitch motor (M).
Energy storage module (C) and the outfan of the first power transfer module (G1), servo-driver (P1) DC power supply terminal, second servo loop PF input be connected.
The input of second source modular converter (G2) is connected in industrial alternating current power supply (L1 and N), the outfan of second source modular converter (G2) is connected on the electric energy feeder ear of variable pitch control circuit (CR1), for when main power source does not depart from wind power generating set, the alternating current that industrial alternating current power supply (L1 and N) provides is converted to unidirectional current when variable pitch control circuit (CR1) works, in a particular embodiment, second source modular converter (G2) provides running voltage to be 24V unidirectional current to variable pitch control circuit (CR1).
Refer to Fig. 5, its as one wind generating set pitch control of the present invention from control system the second preferred embodiment.
Wind generating set pitch control of the present invention includes industrial alternating current power supply (L1, L2, L3 and N), the first power transfer module (G1) and the 3rd power transfer module (G3), an energy storage module (C), a servo-driver (P1), a variable pitch control circuit (CR1) and the first loop (DF) and second servo loop (PF) from control system.
First preferred embodiment and the second preferred embodiment are distinctive in that: decrease second source modular converter (G2).
No matter main power source and wind power generating set whether with disengaging, electric energy during variable pitch control circuit (CR1) normal operation supplies by energy storage module (C), and the electric energy that energy storage module (C) exports is supplied to variable pitch control circuit (CR1) by after the 3rd power transfer module (G3) conversion.
Please continuing and consult Fig. 2, a kind of wind generating set pitch control of the present invention is as follows from the operation principle controlling system:
When main power source not with under wind power generating set disengaging situation:
Wind generating set pitch control of the present invention can carry out becoming oar and action of putting away the oars normally from control system, namely utilizes industrial alternating current power supply (L1, L2, L3) normally to supply electric energy via the control of servo-driver (P1) to pitch motor (M)；Simultaneously the alternating current that industrial alternating current power supply (L1, N) is supplied is converted to the unidirectional current of 24V and is supplied to variable pitch control circuit (CR1) by second source modular converter (G2), nationality is to realize completing the change oar of routine and action of putting away the oars under variable pitch control circuit (CR1) coordinates jointly with servo-driver (P1), now, second servo loop (PF) is connected, and the first loop (DF) disconnects.
When under main power source with wind power generating set disengaging situation, there are two kinds of emergency propeller retraction patterns: (one) stage emergency propeller retraction pattern；(2) direct emergency propeller retraction pattern.
Refer to Fig. 2, because energy storage module (C) completes charging action already by the first power transfer module (G1) before main power source departs from wind power generating set.
When judging that main power source departs from wind power generating set, and when starting feather function, in feather triggering signal triggering variable pitch control circuit (CR1) situation, energy storage module (C) passes through twice different action of putting away the oars of rotating speed from front and back under servo-driver (P1) jointly cooperation under variable pitch control circuit (CR1) controls and carries out stage putting away the oars；Meanwhile, electric energy during variable pitch control circuit (CR1) normal operation with discharge type output and is supplied to variable pitch control circuit after being carried out DC/DC conversion by the 3rd power transfer module (G3) by being stored in the inner electric energy of energy storage module (C).
When main power source departs from wind power generating set, when needing emergency propeller retraction, there is also a kind of mode not undertaken by the stage control strategy of putting away the oars of feather and putting away the oars, direct mode of quickly putting away the oars, namely feather circuit controls second servo loop (PF) disconnection, first loop (DF) is connected, meanwhile, variable pitch control circuit (CR1) control energy storage module (C) electric discharge and either directly through the first loop (DF) to pitch motor (M) supply put away the oars action time required electric energy to reach the purpose of emergency propeller retraction.Control method of putting away the oars also has done corresponding elaboration simultaneously in the lump.
Refer to Fig. 3, be described below in detail wind generating set pitch control and carry out putting away the oars from control system the detailed control method of action:
Step 1: variable-pitch control system has detected whether order of putting away the oars, such as nothing, properly functioning, if any, variable-pitch control system starts the program of putting away the oars and puts away the oars, and performs step 2；
Step 2: whether detecting blade is at feather position (vane angle when namely blade returns to home, it is alternatively referred to as safe vane angle) and feed back to variable-pitch control system, if do not existed, continue the main power source whether power down of detection variable-pitch control system and perform step 3
As, perform step 7；
Step 3: such as power down, start back-up source, variable pitch control circuit (CR1) activates servo-driver (P1), loop (PF), cut-off loop (DF), simultaneously servo-driver (P1) carries out stage putting away the oars according to real time load and setting speed of putting away the oars, namely first put away the oars the position less than or equal to vane angle (W1) setting rotating speed (V1) of putting away the oars, it is switched to setting again to put away the oars rotating speed (V2), put away the oars safe vane angle (W2), simultaneously under the control of variable pitch control circuit (CR1), whether the time of always putting away the oars of monitoring and setting puts away the oars rotating speed (V1) and setting is put away the oars rotating speed (V2) exceedes setting is put away the oars the time (S1) and performs step 4,
Such as non-power down, variable pitch control circuit (CR1) activates servo-driver (P1), loop (PF), cut-off loop (DF), simultaneously servo-driver (P1) carries out stage putting away the oars according to real time load and setting speed of putting away the oars, namely first put away the oars the position less than or equal to vane angle (W1) setting rotating speed (V1) of putting away the oars, it is switched to setting again to put away the oars rotating speed (V2), put away the oars safe vane angle (W2), simultaneously under the control of variable pitch control circuit (CR1), whether the time of always putting away the oars of monitoring and setting puts away the oars rotating speed (V1) and setting is put away the oars rotating speed (V2) exceedes setting is put away the oars the time (S1) and performs step 4；
Step 4: whether monitoring servo-driver is normal, as normally, performed step 5, as abnormal, performs step 6；
Step 5: put away the oars the time in (S1) in setting, immediately detect and feed back the vane angle signal of blade, whether detection blade reaches safe vane angle (W2), as arrived safe vane angle (W2), variable pitch control circuit (CR1) cuts off servo-driver (P1) and enables, blade returns to safe vane angle, and wind power generating set is in a safe condition, performs step 7；
As not up to safe vane angle (W2), performed step 6；
Step 6: variable pitch control circuit (CR1) cuts off servo-driver and enables and loop (PF), activation loop (DF) is directly to drive pitch motor (M) to proceed to put away the oars simultaneously, until blade at least being received safe vane angle (W2), pitch motor (M) power-off, blade returns to safe vane angle, wind power generating set is in a safe condition, and now 91 ° of limit switch (K1) even 95 ° of limit switches (K2) disconnect；
Step 7: stop putting away the oars action, completes to put away the oars.
In step 3, safe vane angle (W2) is any one vane angle position, the i.e. feather position in 90 °～92 °, and now the angle between wind direction and blade is zero or only small.In specific embodiment, safe vane angle (W2) is 91 °.
In step 3, vane angle (W1) can be less than any one the vane angle value in safe vane angle (W2) more than 30 °.
Wherein, step 3 sets the duration of the time of putting away the oars (S1) as any one time in 12s～18s, in specific embodiment, set the duration of the time of putting away the oars (S1) as 15s.
Rotating speed of putting away the oars (V1) in step 3 can be put away the oars with the rotating speed of 6 °s/sec～8 °s/sec.In specific embodiment, rotating speed of putting away the oars (V1) is put away the oars with the rotating speed of 7 °s/sec.
It may is that within the setting time, the situation of catastrophe failure occurs servo-driver (P1) in step 5 as not up to safe vane angle (W2)；Cannot can also put away the oars the situation of safe vane angle (W2) during servo-driver (P1) normal operation.
Rotating speed of putting away the oars (V2) in step 3 is less than rotating speed of putting away the oars (V1).
Whether step 5 Leaf arrives the angle of safe vane angle (W2) is judge to confirm by 91 ° of limit switches (K1), and encoder (E1) detects occurrence.Safe vane angle when safe vane angle (W2) in step 3 is for feather position.
Completing one of mark of putting away the oars in step 7 is that blade arrives safe vane angle, and 91 ° of limit switches (K1) are gone off by normally off.
Operation principle about the second preferred embodiment of the present invention a kind of wind power generating set direct current variable pitch control system is essentially identical with the first preferred embodiment, only it is distinctive in that: no matter whether main power source departs from wind power generating set, supplies electric energy each through the 3rd power transfer module (G3) to variable pitch control circuit (CR1).Do not repeat them here.
Need specialize be, controlling the actually second servo loop (PF) with wind power generating set direct current variable pitch control system of the present invention of the loop (PF) addressed in amplifying is same technical characteristic, the relation of this technical characteristic and other technologies feature, function is all identical with second servo loop (PF), it is only that the difference of description: actually the first loop (DF) with wind power generating set direct current variable pitch control system of the present invention, the loop (DF) addressed in control method is same technical characteristic, the relation of this technical characteristic and other technologies feature, functions etc. are all identical with the first loop (DF), it is only that the difference of description.
In sum, one wind power generating set direct current variable pitch control system of the present invention stage can carry out control of putting away the oars, energy savings module (C) stored up electric energy is made to need output by control, thus bigger energy savings module (C) stored up electric energy can efficient, more reasonably be used, when electric energy is certain, obtain bigger angle of putting away the oars, increase the safety of wind power generating set；Avoid the impact injury to pitch motor (M) of big electric current when directly putting away the oars, be effectively protected pitch motor (M) and extend the service life of pitch motor (M).
Techniques discussed above scheme is only a kind of wind generating set pitch control of the present invention from the preferred embodiment controlling system, any at a kind of wind generating set pitch control of the present invention from controlling the equivalent transformation made in system-based or replacement is included within the scope of the claims of this patent.
Claims (5)
1. a wind power generating set direct current variable pitch control system, including industrial alternating current power supply (L1, L2, L3 and N), an energy storage module (C), a servo-driver (P1) and one first loop (DF), industrial alternating current power supply (L1, L2, L3) is directly connected with each other with the AC-powered end of servo-driver (P1), described wind power generating set direct current variable pitch control system is electrically connected to each other by servo-driver (P1) and pitch motor (M), it is characterised in that:
This wind power generating set direct current variable pitch control system farther includes the first power transfer module (G1), second source modular converter (G2), the 3rd power transfer module (G3), the variable pitch control circuit (CR1) with stage function of putting away the oars and second servo loop (PF)；
The input of second source modular converter (G2) is connected to industry alternating current power supply (L1 and N), and the outfan of second source modular converter (G2) is connected on the electric energy feed end of variable pitch control circuit (CR1)；
3rd power transfer module (G3) input connects between energy storage module (C) and servo-driver (P1) powered by direct current end, and the 3rd power transfer module (G3) outfan is connected on the electric energy feed end of variable pitch control circuit (CR1)；
The outfan in the first loop (DF) is connected with pitch motor (M)；
Energy storage module (C) and the outfan of the first power transfer module (G1), servo-driver (P1) DC power supply terminal, the first loop (DF) input be connected；
Second servo loop (PF) input is connected with servo-driver (P1) outfan, and outfan is connected with pitch motor (M).
2. a kind of wind power generating set direct current variable pitch control system according to claim 1, it is characterised in that: the first power transfer module (G1) and second source modular converter (G2) are ac/dc conversion module.
3. a kind of wind power generating set direct current variable pitch control system according to claim 2, it is characterised in that: the 3rd power transfer module (G3) is DC/DC conversion module.
4. a kind of wind power generating set direct current variable pitch control system according to claim 3, it is characterised in that: the first loop (DF) and second servo loop (PF) they can be any one in catalyst, controllable silicon, integrated break-make device.
5. a kind of wind power generating set direct current variable pitch control system according to claim 1, it is characterised in that: energy storage module (C) is any one in super capacitor and accumulator.
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| CN201310017012.0A CN103511182B (en) | 2013-01-17 | 2013-01-17 | A kind of wind power generating set direct current variable pitch control system |
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| CN103883468B (en) * | 2014-03-13 | 2016-03-30 | 成都阜特科技股份有限公司 | The controlling method of a kind of wind power generating set when low wind |
| EP3521612A1 (en) * | 2018-01-31 | 2019-08-07 | Siemens Gamesa Renewable Energy A/S | Method for controlling the pitch angle of wind turbine blades |
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| CN201247964Y (en) * | 2009-01-08 | 2009-05-27 | 北京能高自动化技术有限公司 | Power supply for variable pitch system |
| CN102112738A (en) * | 2009-01-06 | 2011-06-29 | 三菱重工业株式会社 | Wind-power generation device and control method for wind-power generation device |
| CN102148530A (en) * | 2011-03-02 | 2011-08-10 | 新疆金风科技股份有限公司 | Pitch control device for wind generating set and wind generating set |
| CN102312774A (en) * | 2010-06-29 | 2012-01-11 | 上海派恩科技有限公司 | Pitch-withdrawing control system |
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| DE102006057213A1 (en) * | 2006-12-01 | 2008-06-05 | Robert Bosch Gmbh | Electric drive device |
| TWI392800B (en) * | 2007-12-14 | 2013-04-11 | Ind Tech Res Inst | Driving device of blade rotation angles in a wind power generator and method therefor |
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|---|---|---|---|---|
| CN102112738A (en) * | 2009-01-06 | 2011-06-29 | 三菱重工业株式会社 | Wind-power generation device and control method for wind-power generation device |
| CN201247964Y (en) * | 2009-01-08 | 2009-05-27 | 北京能高自动化技术有限公司 | Power supply for variable pitch system |
| CN102312774A (en) * | 2010-06-29 | 2012-01-11 | 上海派恩科技有限公司 | Pitch-withdrawing control system |
| CN102148530A (en) * | 2011-03-02 | 2011-08-10 | 新疆金风科技股份有限公司 | Pitch control device for wind generating set and wind generating set |
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