CN102570951A - Method for implementing variable speed and constant frequency of wind power generator by using supercapacitor - Google Patents
Method for implementing variable speed and constant frequency of wind power generator by using supercapacitor Download PDFInfo
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- CN102570951A CN102570951A CN2012100420352A CN201210042035A CN102570951A CN 102570951 A CN102570951 A CN 102570951A CN 2012100420352 A CN2012100420352 A CN 2012100420352A CN 201210042035 A CN201210042035 A CN 201210042035A CN 102570951 A CN102570951 A CN 102570951A
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Abstract
The invention discloses a method for implementing variable speed and constant frequency of a wind power generator by using a supercapacitor. The method comprises the following steps of: 1, measuring a wind direction by an anemoscope, and measuring a wind speed by an anemometer; 2, inputting a wind direction parameter measured by the anemoscope into a controller, so that the controller calculates the wind direction parameter; 3, inputting a wind speed parameter measured by the anemometer into the controller, so that the controller calculates theoretical output power of a wind turbine rotor driven by a windmill wing according to the wind direction parameter and the wind speed parameter and compares the theoretical output power with actual output power; 4, transmitting the output power of the wind turbine rotor to an accelerator, and transmitting the output power by the accelerator to a differential permanent magnet motor; and 5, detecting an electric quantity in a supercapacitor group by an electric quantity detector, when the electric quantity is greater than a high value, transferring electricity from the supercapacitor group into a storage battery, and when the electric quantity is less than a low value, transferring electricity from the storage battery to the supercapacitor group. The method for implementing variable speed and constant frequency of the wind power generator is low in cost; an effect is reliable; and a structure is simple.
Description
Technical field
The present invention relates to a kind of method of work of wind-driven generator, especially relate to a kind of method of utilizing ultracapacitor to realize the wind-driven generator variable speed constant frequency.
Background technology
In the process of wind power generation, capturing wind energy to greatest extent, the electric energy frequency that keeps generator to send again is consistent with the frequency of electrical network, i.e. constant frequency.
The speed-changing constant frequency method that adopts at present extensively mainly contains: cage type asynchronous generator variable speed constant frequency system, AC excitation double-fed generator variable speed constant frequency system, brushless double feed generator variable speed constant frequency system and magneto variable speed constant frequency system.
In the system that adopts the magneto variable speed constant frequency, generally to collect electric energy through complicated structure, could final interflow or the shunting that realizes generated output.
Summary of the invention
The present invention is directed to the drawback of prior art; A kind of method of utilizing ultracapacitor to realize the wind-driven generator variable speed constant frequency is provided; Its objective is through simple and reliable structure, realize the variable speed constant frequency of wind-driven generator, and can avoid receiving the misleading of measuring instrument distortion.
For this reason, the invention provides a kind of method of utilizing ultracapacitor to realize the wind-driven generator variable speed constant frequency, may further comprise the steps:
Step 1, through registering weather vane measure wind direction, through the anemometer measuring wind;
Step 2, the wind direction parameter that said registering weather vane is recorded are input in the controller; Controller calculates the wind direction parameter; And according to result of calculation adjustment pulp distance varying mechanism, the angle with the adjustment awe makes awe be in the maximized position of Wind Power Utilization;
Step 3, the wind speed parameter that said anemometer is recorded also are input in the controller, the theoretical power output of the wind energy conversion system rotor that controller drives according to wind direction parameter and wind speed calculation of parameter awe, and compare with real output; If both differences are in the scope of predetermined value; Then turn to step mule four, if both differences outside the scope of predetermined value, then turn to execution in step two; Readjust the angle of awe, and registering weather vane and anemometer are carried out Performance Detection;
Step 4, the power output of wind energy conversion system rotor is sent to booster engine; Be passed to differential permanent-magnet motor by booster engine again; If the power output of wind energy conversion system rotor is during greater than the rated power of differential permanent-magnet motor; Control by controller; The box of tricks that the power output of wind energy conversion system rotor is got into differential permanent-magnet motor carries out power dividing, and the part that will exceed rated power branches to stand-by generator, and the electric energy that stand-by generator sends exports in the bank of super capacitors that is formed by a plurality of ultracapacitors series connection; If the power output of wind energy conversion system rotor is during less than the rated power of differential permanent-magnet motor; Control by controller; Be input to the power output of wind energy conversion system rotor and the power output of ultracapacitor in the differential permanent-magnet motor jointly; Wherein, the power output sum of the power output of said wind energy conversion system rotor and ultracapacitor equals the rated power of said differential permanent-magnet motor;
Step 5, detect the electric weight in the bank of super capacitors, when electric weight is higher than a high value, the electric weight in the bank of super capacitors transferred in the storage battery through coulometric detector, when electric weight is lower than a low value, in the storage battery to bank of super capacitors transfer electric weight.
Preferably; The described utilization in the method that ultracapacitor realizes the wind-driven generator variable speed constant frequency; In said step 2, the adjusted value of the pulp distance varying mechanism that goes out according to the wind direction calculation of parameter is a scope, with this angle of adjusting awe in a preset range; Compare according to the theoretical power output and the real output that calculate in the step 3 again, get the angle of difference reckling as final awe.
Preferably, the described utilization in the method that ultracapacitor realizes the wind-driven generator variable speed constant frequency, in said step 4, the number range of said rated power is that standard rated power fluctuates 2%.
The method of utilizing ultracapacitor to realize the wind-driven generator variable speed constant frequency of the present invention is with low cost, reliable for effect, simple in structure.
Description of drawings
Fig. 1 is the structural representation that utilizes ultracapacitor to realize the method for wind-driven generator variable speed constant frequency of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed description, can implement according to this with reference to the specification literal to make those skilled in the art.
As shown in Figure 1, the invention discloses a kind of method of utilizing ultracapacitor to realize the wind-driven generator variable speed constant frequency, may further comprise the steps:
Step 1, through registering weather vane measure wind direction, through the anemometer measuring wind;
Step 2, the wind direction parameter that said registering weather vane is recorded are input in the controller; Controller calculates the wind direction parameter; And according to result of calculation adjustment pulp distance varying mechanism, the angle with the adjustment awe makes awe be in the maximized position of Wind Power Utilization; The purpose of doing like this is in order to utilize wind energy substantially, to avoid wind energy to cause waste.
Step mule three, wind speed parameter that said anemometer is recorded also is input in the controller, and controller is according to the theoretical power output of wind direction parameter with the wind energy conversion system rotor of wind speed calculation of parameter awe drive, and compares with real output; If both differences are in the scope of predetermined value; Then turn to step 4, if both differences outside the scope of predetermined value, then turn to execution in step two; Readjust the angle of awe, and registering weather vane and anemometer are carried out Performance Detection; When wind-driven generator designs, need design the power output that this generator can produce according to wind direction and wind speed.Therefore, in use, the theoretical power output of the wind energy conversion system rotor that controller also can drive according to wind direction parameter and wind speed calculation of parameter awe.And real output can be through measuring.If both differences are little, explain that then wind-driven generator is in proper working order, and if both gaps are bigger, then need readjust the angle of awe, and whether the work of registering weather vane or anemometer of detecting normal.
Step 4, the power output of wind energy conversion system rotor is sent to booster engine; Be passed to differential permanent-magnet motor by booster engine again; If the power output of wind energy conversion system rotor is during greater than the rated power of differential permanent-magnet motor; Control by controller; The box of tricks that the power output of wind energy conversion system rotor is got into differential permanent-magnet motor carries out power dividing, and the part that will exceed rated power branches to stand-by generator, and the electric energy that stand-by generator sends exports in the bank of super capacitors that is formed by a plurality of ultracapacitors series connection; If the power output of wind energy conversion system rotor is during less than the rated power of differential permanent-magnet motor; Control by controller; Be input to the power output of wind energy conversion system rotor and the power output of ultracapacitor in the differential permanent-magnet motor jointly; Wherein, the power output sum of the power output of said wind energy conversion system rotor and ultracapacitor equals the rated power of said differential permanent-magnet motor; That is to say, excessive when wind-force, when the power output of wind energy conversion system rotor is excessive, be input in the ultracapacitor through unnecessary power is converted into electric energy, and transform mode is through stand-by generator.When wind-force is too small, the energy in the ultracapacitor is input to differential permanent-magnet motor, to remedy the deficiency of power.
Step 5, detect the electric weight in the bank of super capacitors, when electric weight is higher than a high value, the electric weight in the bank of super capacitors transferred in the storage battery through coulometric detector, when electric weight is lower than a low value, in the storage battery to bank of super capacitors transfer electric weight.Purpose is to utilize storage battery to help ultracapacitor to store more energy.
Preferably; The described utilization in the method that ultracapacitor realizes the wind-driven generator variable speed constant frequency; In said step 2, the adjusted value of the pulp distance varying mechanism that goes out according to the wind direction calculation of parameter is a scope, with this angle of adjusting awe in a preset range; Compare according to the theoretical power output and the real output that calculate in the step 3 again, get the angle of difference reckling as final awe.In practice, the numerical value that comes out of calculating may not be optimal value, calculates through the difference between theoretical value and the actual value, can find real best angle, makes Wind Power Utilization reach maximization.
Preferably, the described utilization in the method that ultracapacitor realizes the wind-driven generator variable speed constant frequency, in said step 4, the number range of said rated power is that standard rated power fluctuates 2%.That is to say, when the power output of wind energy conversion system rotor is done minor variations around standard rated power, can ignore and not remember, need not start the processing method of variable speed constant frequency.
Although embodiment of the present invention are open as above; But it is not restricted to listed utilization in specification and the execution mode; It can be applied to various suitable the field of the invention fully, for being familiar with those skilled in the art, can easily realize other modification; Therefore under the universal that does not deviate from claim and equivalency range and limited, the legend that the present invention is not limited to specific details and illustrates here and describe.
Claims (3)
1. a method of utilizing ultracapacitor to realize the wind-driven generator variable speed constant frequency is characterized in that, may further comprise the steps:
Step 1, through registering weather vane measure wind direction, through the anemometer measuring wind;
Step 2, the wind direction parameter that said registering weather vane is recorded are input in the controller; Controller calculates the wind direction parameter; And according to result of calculation adjustment pulp distance varying mechanism, the angle with the adjustment awe makes awe be in the maximized position of Wind Power Utilization;
Step 3, the wind speed parameter that said anemometer is recorded also are input in the controller, the theoretical power output of the wind energy conversion system rotor that controller drives according to wind direction parameter and wind speed calculation of parameter awe, and compare with real output; If both differences are in the scope of predetermined value; Then turn to step 4, if both differences outside the scope of predetermined value, then turn to execution in step two; Readjust the angle of awe, and registering weather vane and anemometer are carried out Performance Detection;
Step 4, the power output of wind energy conversion system rotor is sent to booster engine; Be passed to differential permanent-magnet motor by booster engine again; If the power output of wind energy conversion system rotor is during greater than the rated power of differential permanent-magnet motor; Control by controller; The box of tricks that the power output of wind energy conversion system rotor is got into differential permanent-magnet motor carries out power dividing, and the part that will exceed rated power branches to stand-by generator, and the electric energy that stand-by generator sends exports in the bank of super capacitors that is formed by a plurality of ultracapacitors series connection; If the power output of wind energy conversion system rotor is during less than the rated power of differential permanent-magnet motor; Control by controller; Be input to the power output of wind energy conversion system rotor and the power output of ultracapacitor in the differential permanent-magnet motor jointly; Wherein, the power output sum of the power output of said wind energy conversion system rotor and ultracapacitor equals the rated power of said differential permanent-magnet motor;
Step 5, detect the electric weight in the bank of super capacitors, when electric weight is higher than a high value, the electric weight in the bank of super capacitors transferred in the storage battery through coulometric detector, when electric weight is lower than a low value, in the storage battery to bank of super capacitors transfer electric weight.
2. the method for utilizing ultracapacitor to realize the wind-driven generator variable speed constant frequency as claimed in claim 1; It is characterized in that; In said step 2, the adjusted value of the pulp distance varying mechanism that goes out according to the wind direction calculation of parameter is a scope, with this angle of adjusting awe in a preset range; Compare according to the theoretical power output and the real output that calculate in the step 3 again, get the angle of difference reckling as final awe.
3. the method for utilizing ultracapacitor to realize the wind-driven generator variable speed constant frequency as claimed in claim 1 is characterized in that in said step 4, the number range of said rated power is that standard rated power fluctuates 2%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162236A (en) * | 2015-09-28 | 2015-12-16 | 香港城市大学深圳研究院 | Composite energy power distribution system |
Citations (7)
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| US6946751B2 (en) * | 2003-03-19 | 2005-09-20 | Mitsubishi Denki Kabushiki Kaisha | Wind power generation system |
| CN1794562A (en) * | 2005-12-30 | 2006-06-28 | 西安理工大学 | Speed changing constant frequency method of wind force generation |
| CN1808852A (en) * | 2005-12-30 | 2006-07-26 | 西安理工大学 | Wind power generation differential permanent-magnet motor apparatus |
| CN101022260A (en) * | 2006-02-15 | 2007-08-22 | 中国科学院自动化研究所 | Multi-wind wheel wind electric machine set and control method thereof |
| CN101272084A (en) * | 2008-05-16 | 2008-09-24 | 东南大学 | Electro-mechanical mixed stepless speed-changing wind power generation plant |
| CN101672254A (en) * | 2009-09-25 | 2010-03-17 | 泰豪科技(深圳)电力技术有限公司 | Wind farm and control method thereof |
| CN101702610A (en) * | 2009-09-11 | 2010-05-05 | 大连理工大学 | Double-fed aerogenerator excitation system based on the hybrid stored energy of super capacitor and storage battery |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6946751B2 (en) * | 2003-03-19 | 2005-09-20 | Mitsubishi Denki Kabushiki Kaisha | Wind power generation system |
| CN1794562A (en) * | 2005-12-30 | 2006-06-28 | 西安理工大学 | Speed changing constant frequency method of wind force generation |
| CN1808852A (en) * | 2005-12-30 | 2006-07-26 | 西安理工大学 | Wind power generation differential permanent-magnet motor apparatus |
| CN101022260A (en) * | 2006-02-15 | 2007-08-22 | 中国科学院自动化研究所 | Multi-wind wheel wind electric machine set and control method thereof |
| CN101272084A (en) * | 2008-05-16 | 2008-09-24 | 东南大学 | Electro-mechanical mixed stepless speed-changing wind power generation plant |
| CN101702610A (en) * | 2009-09-11 | 2010-05-05 | 大连理工大学 | Double-fed aerogenerator excitation system based on the hybrid stored energy of super capacitor and storage battery |
| CN101672254A (en) * | 2009-09-25 | 2010-03-17 | 泰豪科技(深圳)电力技术有限公司 | Wind farm and control method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105162236A (en) * | 2015-09-28 | 2015-12-16 | 香港城市大学深圳研究院 | Composite energy power distribution system |
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