CN103291547A - Blade rotating speed control system and control method thereof - Google Patents

Blade rotating speed control system and control method thereof Download PDF

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Publication number
CN103291547A
CN103291547A CN2012100516317A CN201210051631A CN103291547A CN 103291547 A CN103291547 A CN 103291547A CN 2012100516317 A CN2012100516317 A CN 2012100516317A CN 201210051631 A CN201210051631 A CN 201210051631A CN 103291547 A CN103291547 A CN 103291547A
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CN
China
Prior art keywords
control system
pattern
speed control
rotational speed
blade
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Pending
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CN2012100516317A
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Chinese (zh)
Inventor
洪云麒
萧智鸿
詹程杰
邱泓铃
黄远芳
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Delta Optoelectronics Inc
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Delta Optoelectronics Inc
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Priority to CN2012100516317A priority Critical patent/CN103291547A/en
Publication of CN103291547A publication Critical patent/CN103291547A/en
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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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  • Control Of Eletrric Generators (AREA)

Abstract

The invention discloses a blade rotating speed control system and a control method thereof. The blade rotating speed control system is mutually applied with an electric generator and a blade; and the control method comprises the following steps: setting the blade rotating speed control system as a first mode, detecting a voltage value and a current value of the electric generator by a processing unit, producing a modulating signal according to the voltage value and the current value by the processing unit, switching the blade rotating speed control system into a second mode by the processing unit, and adjusting the current value according to the modulating signal by a control unit.

Description

Blade rotational speed control system and controlling method thereof
Technical field
The present invention is about a kind of blade rotational speed control system and controlling method, particularly about a kind of blade rotational speed control system and controlling method of wind generating unit.
Background technique
At present, the whole world just seriously faces the energy starved problem, and many dealers drop into research and the exploitation of relevant alternative energy, wherein one of developing direction of attaching most importance to green energy resource again therefore and one after another.So-called green energy resource is the energy that can reuse and not cause environmental pollution in the physical environment, for example solar energy, tidal energy, ocean current energy and wind power energy etc.The particularly utilization of wind power energy, because wind resource is obtained easily, therefore wind generating unit can arrange everywhere, and wind generating unit because have zero pollutes, inexhaustible and characteristic that economic benefit is high, makes wind-power electricity generation become various countries and all endeavours the alternative energy source system that researches and develops.
Wind-power electricity generation mainly is the blade that flows to rotate wind generating unit by air, sees through gear-box and generator set then wind energy is converted to electric energy.The blade area of wind generating unit is bigger, and the wind-force area that then can receive is more wide, so as long as the wind-force of low speed just can promote.But too high when wind speed, it is more fast that blade changes, and the electric energy that generator is changed is when surpassing the electric energy that battery can store, and with load consumption, the ability that makes can't fully be utilized wind generating unit with too much energy.And work as more fast that blade changes, have the generation of excess current easily, and can cause generator to damage, influence the running of whole wind generating unit.
Therefore, how to provide a kind of blade rotational speed control system and controlling method thereof, can effectively control the rotating speed of the blade of wind generating unit, not only can avoid with the unnecessary energy of load consumption, more can avoid generator to damage, and can promote the benefit of wind-power electricity generation.
Summary of the invention
Because foregoing, purpose of the present invention is for providing a kind of blade rotational speed control system and controlling method thereof, under the too high situation of wind speed, can effectively control the rotating speed of the blade of wind generating unit, avoid generator to damage, and can promote the benefit of wind-power electricity generation.
In order to achieve the above object, the invention provides a kind of controlling method of blade rotational speed control system, blade rotational speed control system and a generator and a blade are used mutually, and controlling method comprises: setting the blade rotational speed control system is one first pattern; One processing unit detects a magnitude of voltage and a current value of generator; Processing unit produces a modulating signal according to magnitude of voltage and current value; Processing unit switches to one second pattern with the blade rotational speed control system; And one control unit adjust current value according to modulating signal.
In a preferred embodiment of the present invention, the controlling method of blade rotational speed control system is applied to a wind generating unit.
In a preferred embodiment of the present invention, controlling method also comprises the blade rotational speed control system is switched to first pattern from second pattern.
In a preferred embodiment of the present invention, first pattern is normal mode; Second pattern is heavily loaded pattern.
In a preferred embodiment of the present invention, controlling method also comprises: control unit is exported a reduce-speed sign; And one brake units start a brake function according to reduce-speed sign.
In order to achieve the above object, the invention provides a kind of blade rotational speed control system and a generator and a blade and use mutually, the blade rotational speed control system comprises a processing unit, a control unit and a brake units.Processing unit detects a magnitude of voltage and a current value of generator, and produces a modulating signal according to this.Control unit is adjusted current value according to modulating signal, and exports a reduce-speed sign.Brake units starts a brake function according to reduce-speed sign.
In a preferred embodiment of the present invention, be applied to a wind generating unit.
In a preferred embodiment of the present invention, the blade rotational speed control system has one first pattern and one second pattern.
In a preferred embodiment of the present invention, processing unit has a data sheet, and it has the data of a plurality of current values of a plurality of magnitude of voltage and first pattern and second pattern.
In a preferred embodiment of the present invention, it is first pattern or second pattern that processing unit switches the blade rotational speed control system.
From the above, blade rotational speed control system of the present invention and controlling method thereof initially are made as first pattern with the blade rotational speed control system, detect magnitude of voltage and the current value of generator by processing unit, and then judge the rotating speed of blade.When wind speed too high and make the rotating speed of blade too fast, or battery is the following time of situation that is full of, processing unit produces modulating signal according to magnitude of voltage and the current value of generator, and the blade rotational speed control system is switched to second pattern, and the current value of adjustment generator, and then raising moment, the rotating speed of blade is reduced; Be general normal wind speed when wind speed returns, also magnitude of voltage and the current value according to generator produces modulating signal, and the blade rotational speed control system is switched to first pattern, makes system return original state.
Description of drawings
Fig. 1 is the system block diagrams of the blade rotational speed control system of preferred embodiment of the present invention;
Fig. 2 is the mode of execution of the data sheet of blade rotational speed control system of the present invention;
Fig. 3 is the plotted curve of blade of the present invention and generator; And
Fig. 4 is the flow chart of steps of the controlling method of the blade rotational speed control system of preferred embodiment of the present invention.
Wherein, description of reference numerals is as follows:
1: the blade rotational speed control system;
11: processing unit;
111: data sheet;
12: control unit;
13: brake units;
A: blade;
B: generator;
C1, C2, C3: curve;
I: current value;
M: modulating signal;
R: reduce-speed sign;
S01～S05: step;
V: magnitude of voltage.
Embodiment
Hereinafter with reference to correlative type, a kind of blade rotational speed control system and controlling method thereof according to preferred embodiment of the present invention are described, wherein components identical will be illustrated with identical reference marks.
Please refer to shown in Figure 1ly, wherein Fig. 1 is the system block diagrams according to the blade rotational speed control system of preferred embodiment of the present invention.Must illustrate that at first the blade rotational speed control system 1 of present embodiment is applied to a wind generating unit, a blade A and a generator B of blade rotational speed control system 1 and wind generating unit use mutually, and in order to control the rotating speed of blade A.The electrical power storage that generator B produces is in a battery, or electric energy directly provided gives civil power (scheming not shown).Wherein, blade rotational speed control system 1 has one first pattern and one second pattern.First pattern of present embodiment for example is normal mode, and second pattern for example is heavily loaded pattern, its non-limiting the use of in the present invention.Wherein, after the detailed content of first pattern and second pattern will be specified in.In other embodiments, the blade rotational speed control system more can have various modes, as has more a three-mode and a four-mode etc.The blade rotational speed control system 1 of present embodiment comprises a processing unit 11, a control unit 12 and a brake units 13.
Processing unit 11 couples with generator B, to detect and to read magnitude of voltage V and the current value I of generator B, learns the rotating speed of blade A by this.Please be simultaneously with reference to Figure 1 and Figure 2, wherein Fig. 2 is the mode of execution of the data sheet of blade rotational speed control system of the present invention.The processing unit 11 of present embodiment has a data sheet 111, and it has the data of a plurality of current value I of a plurality of magnitude of voltage V and first pattern and second pattern.Data sheet 111 cited magnitude of voltage V and the current value I of present embodiment are not to be defined in the present invention, in other embodiments, the difference of environment can be set, or because of the characteristic difference of blade rotational speed control system because of wind generating unit, and adjust the data of magnitude of voltage and current value.When wind generating unit under the situation of general normal operation, during less than 12～17 meters of per seconds, blade rotational speed control system 1 is set at first pattern as wind speed.Along with wind speed constantly increases, the rotating speed of blade A also constantly speeds, 11 detected magnitude of voltage V are voltage max when processing unit, and current value I is during greater than the current maxima of first pattern, processing unit 11 switches to second pattern with blade rotational speed control system 1 from first pattern, and exports a modulating signal M.In more detail, for example working as magnitude of voltage V is voltage max 50V, and current value I is during greater than the current maxima 5A of first pattern, and processing unit 11 switches to second pattern with blade rotational speed control system 1 from first pattern, and processing unit 11 is according to magnitude of voltage V and current value I output modulating signal M.
Control unit 12 couples with processing unit 11, and current value I is switched to the current value of the second corresponding pattern according to modulating signal M from the current maxima of first pattern, and be back to generator B, to promote the current value I of generator B, for example promoting from 5A is 7A.Since generator B battery (scheme not shown) be full of or the situation of wind speed too fast (for example the wind speed per second is greater than 17 meters) under, for decide the device of power, therefore work as the current value I lifting, then magnitude of voltage V can decrease.Wherein, the value of deciding power is the maximum output value of generator B.Control unit 12 is also exported a reduce-speed sign R by this.
Brake units 13 couples with control unit 12, and receives reduce-speed sign R, and starts a brake function according to this and give generator B; to improve the moment of generator B; make the moment of blade A less than the moment of generator B, and then reduce the rotating speed of blade A, with effective protection wind generating unit.Can be not too fast because of wind speed in order to do making, and the rotating speed of the blade A of wind generating unit is increased severely, and then damage the bearing of generator B.Please refer to shown in Figure 3ly, its longitudinal axis for blade of the present invention and generator is moment, and transverse axis is the plotted curve of rotating speed.Wherein, curve C 1 is the curve of blade A; Curve C 2 is the curve of generator B under general normal wind speed; Curve C 3 is the curve of generator B under wind speed is too fast.
In addition, 11 detected magnitude of voltage V are voltage minimum when processing unit, and current value I is during less than the current minimum of second pattern, and processing unit 11 switches to first pattern with blade rotational speed control system 1 from second pattern.For example when magnitude of voltage V be voltage minimum 10V, and current value I is during less than the current minimum 3A of second pattern, processing unit 11 switches to first pattern with blade rotational speed control system 1 from second pattern.
What deserves to be explained is that first pattern of present embodiment is normal mode for example, and second pattern for example is heavily loaded pattern.Therefore under the situation of general normal wind speed, blade rotational speed control system 1 is set at first pattern.And when battery be that situation about being full of or wind speed constantly increase and surpass certain wind speed; and when the magnitude of voltage V of generator B and current value I surpass the value that first pattern sets; then blade rotational speed control system 1 is switched to second pattern; and the function of startup brake; reduce the rotating speed of blade A; with the protection wind generating unit, avoid the bearing of generator B to damage.Relatively, be down to general wind speed when wind speed is gradually slow, and the magnitude of voltage V of generator B and current value I then switch to first pattern with blade rotational speed control system 1, to return normal mode when being lower than the value that second pattern sets.
Please be simultaneously with reference to Fig. 1 and shown in Figure 4, wherein Fig. 4 is the flow chart of steps of the controlling method of the blade rotational speed control system of preferred embodiment of the present invention.The controlling method of blade rotational speed control system 1 and a blade A and a generator B use mutually, in order to the rotating speed of the blade A that controls wind generating unit.Blade rotational speed control system 1 comprises a processing unit 11, a control unit 12 and a brake units 13 that couples mutually.At first need state clearly, the blade rotational speed control system 1 of present embodiment has two modes, is respectively one first pattern and one second pattern.Wherein, first pattern of present embodiment is normal mode for example, refers to that blade rotational speed control system 1 is applied under the situation of general normal wind speed; And second pattern for example is heavily loaded pattern, and it is too fast to refer to that blade rotational speed control system 1 is applied to wind speed, or battery is under the situation about being full of.In other embodiments, the blade rotational speed control system can have more various modes, as has more three-mode or four-mode etc.
The controlling method of present embodiment comprises step S01 to S05.Step S01, setting blade rotational speed control system 1 is first pattern.Step S02, processing unit 11 detects a magnitude of voltage V and the current value I of generator B.Step S03, processing unit 11 produces a modulating signal M according to magnitude of voltage V and current value I.Step S04, processing unit 11 switches to second pattern with blade rotational speed control system 1.Step S05, control unit 12 is adjusted current value I according to modulating signal M.
At first, in step S01, setting blade rotational speed control system 1 is first pattern, and in step S02, processing unit 11 detects magnitude of voltage V and the current value I of generator B.If wind speed remains under the situation of general normal wind speed (for example wind speed is less than 12～17 meters of per seconds), then continue execution in step S02, to detect and to observe magnitude of voltage V and the current value I of generator B.In step S03 and step S04, when wind speed strengthens, and the rotating speed of blade A also speeds thereupon, make the magnitude of voltage V of generator B reach voltage max 50V (as shown in Figure 2), and current value I is during greater than the current maxima 5A of first pattern, processing unit 11 produces a modulating signal M according to magnitude of voltage V and current value I, and blade rotational speed control system 1 is switched to second pattern from first pattern.
Step S05, control unit 12 is tuned as the current value of corresponding second pattern with current value I from the current maxima of first pattern according to modulating signal M, for example promotes from 5A to be 7A, and is back to generator B, to promote the current value I of generator B.Since generator B battery be full of or the situation of wind speed too fast (for example the wind speed per second is greater than 17 meters) under, for decide power device, therefore when the current value I lifting, then magnitude of voltage V can decrease.Wherein, the value of deciding power for example is the maximum output value of generator B.Control unit 12 is exported a reduce-speed sign R by this.
At last, brake units 13 receives reduce-speed sign R, and starts a brake function according to this and give generator B, and improves the moment of generator B, makes the moment of blade A less than the moment of generator B, reducing the rotating speed of blade A, and improves torque.Can be not too fast because of wind speed in order to do making, and make the rotating speed of blade A of wind generating unit too fast, and damage the bearing of generator B, and can protect wind generating unit.
What must illustrate is, when blade rotational speed control system 1 is second pattern, for example wind speed remains under the situation of high speed wind speed (for example wind speed is greater than 17 meters of per seconds), execution in step S02 again then, detect magnitude of voltage V and the current value I of generator B, to continue to detect side and observation blade rotational speed control system 1.When wind speed weakens, and the rotating speed of blade A is also gradually slow, in addition, the magnitude of voltage V of generator B also reaches voltage minimum 10V (as shown in Figure 2), and current value I is during less than the current minimum 3A of second pattern, processing unit 11 produces modulating signal M according to magnitude of voltage V and current value I, and blade rotational speed control system 1 is switched to first pattern from second pattern.
Control unit 12 is tuned as the current value of corresponding first pattern with current value I from the current minimum of second pattern according to modulating signal M, for example is reduced to 1A from 3A, and is back to generator B, to reduce the current value I of generator B.
In sum, blade rotational speed control system of the present invention and controlling method thereof initially are made as first pattern with the blade rotational speed control system, detect the magnitude of voltage of generator and the rotating speed of current value and then judgement blade by processing unit.Too high and the rotating speed of blade is increased severely when wind speed, or battery is under the situation about being full of, and then processing unit produces modulating signal according to magnitude of voltage and current value, so that the blade rotational speed control system is switched to second pattern, and the current value of adjustment generator, and then improve moment, the rotating speed of blade is reduced; Be also to produce general normal wind speed modulating signal according to magnitude of voltage and current value, and the blade rotational speed control system is switched to first pattern when wind speed returns, make system return original state.
Compared with prior art, blade rotational speed control system of the present invention and controlling method thereof, under or the situation that battery is full of too fast in blade rotational speed, can effectively control the rotating speed of the blade of wind generating unit, not only can avoid with the unnecessary energy of load consumption, more can avoid generator and bearing thereof to damage, to promote the benefit of whole wind-power electricity generation.
The above only is illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and to its equivalent modifications of carrying out or change, all should be contained in appended applying for a patent in the claim scope.

Claims (11)

1. the controlling method of a blade rotational speed control system, this blade rotational speed control system and a generator and a blade are used mutually, it is characterized in that, and this controlling method comprises:
Setting this blade rotational speed control system is one first pattern;
One processing unit detects a magnitude of voltage and a current value of this generator;
This processing unit produces a modulating signal according to this magnitude of voltage and this current value;
This processing unit switches to one second pattern with this blade rotational speed control system; And
One control unit is adjusted this current value according to this modulating signal.
2. controlling method as claimed in claim 1 is characterized in that, this controlling method is applied to a wind generating unit.
3. controlling method as claimed in claim 1 is characterized in that, also comprises:
This blade rotational speed control system is switched to this first pattern from this second pattern.
4. controlling method as claimed in claim 1 is characterized in that, this first pattern is normal mode.
5. controlling method as claimed in claim 1 is characterized in that, this second pattern is heavily loaded pattern.
6. controlling method as claimed in claim 1 is characterized in that, also comprises:
This control unit is exported a reduce-speed sign;
One brake units starts a brake function according to this reduce-speed sign.
7. blade rotational speed control system, itself and a generator and a blade are used mutually, it is characterized in that this blade rotational speed control system comprises:
One processing unit detects a magnitude of voltage and a current value of this generator, and produces a modulating signal according to this;
One control unit is adjusted this current value according to this modulating signal, and exports a reduce-speed sign; And
One brake units starts a brake function according to this reduce-speed sign.
8. blade rotational speed control system as claimed in claim 7 is characterized in that, this blade rotational speed control system is applied to a wind generating unit.
9. blade rotational speed control system as claimed in claim 7 is characterized in that, this blade rotational speed control system has one first pattern and one second pattern.
10. blade rotational speed control system as claimed in claim 9 is characterized in that this processing unit has a data sheet, and this data sheet has the data of a plurality of current values of a plurality of magnitude of voltage and this first pattern and this second pattern.
11. blade rotational speed control system as claimed in claim 9 wherein is characterized in that, it is this first pattern or this second pattern that this processing unit switches this blade rotational speed control system.
CN2012100516317A 2012-03-01 2012-03-01 Blade rotating speed control system and control method thereof Pending CN103291547A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104791192A (en) * 2015-04-16 2015-07-22 深圳市风光宝新能源科技有限公司 Wind turbine speed limiting and braking protection and control device and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200987072Y (en) * 2006-07-07 2007-12-05 河海大学 Wind power generation plant based on DC electric generator
US20080277938A1 (en) * 2007-05-09 2008-11-13 Hitachi, Ltd. Wind Power Generation System and Operating Method Thereof
JP2009195051A (en) * 2008-02-15 2009-08-27 Seiko Epson Corp Power generator for generating electric power by receiving fluid
CN101793235A (en) * 2010-04-15 2010-08-04 哈尔滨工业大学 Maximum power tracking type wind power generation device with energy predicting function and method thereof
CN101888146A (en) * 2010-06-30 2010-11-17 三一电气有限责任公司 Power supply device for test bed of wind driven generator and test system of wind driven generator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200987072Y (en) * 2006-07-07 2007-12-05 河海大学 Wind power generation plant based on DC electric generator
US20080277938A1 (en) * 2007-05-09 2008-11-13 Hitachi, Ltd. Wind Power Generation System and Operating Method Thereof
JP2009195051A (en) * 2008-02-15 2009-08-27 Seiko Epson Corp Power generator for generating electric power by receiving fluid
CN101793235A (en) * 2010-04-15 2010-08-04 哈尔滨工业大学 Maximum power tracking type wind power generation device with energy predicting function and method thereof
CN101888146A (en) * 2010-06-30 2010-11-17 三一电气有限责任公司 Power supply device for test bed of wind driven generator and test system of wind driven generator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104791192A (en) * 2015-04-16 2015-07-22 深圳市风光宝新能源科技有限公司 Wind turbine speed limiting and braking protection and control device and method
CN104791192B (en) * 2015-04-16 2018-02-27 深圳市风光宝新能源科技有限公司 A kind of wind energy conversion system speed limit and the device and method of brake protection control

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Application publication date: 20130911