KR20170057689A - Apparatus for stabilizing power control of power stack in new renewable generator - Google Patents
Apparatus for stabilizing power control of power stack in new renewable generator Download PDFInfo
- Publication number
- KR20170057689A KR20170057689A KR1020150161100A KR20150161100A KR20170057689A KR 20170057689 A KR20170057689 A KR 20170057689A KR 1020150161100 A KR1020150161100 A KR 1020150161100A KR 20150161100 A KR20150161100 A KR 20150161100A KR 20170057689 A KR20170057689 A KR 20170057689A
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- Prior art keywords
- voltage
- energy storage
- power
- renewable energy
- converter
- Prior art date
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- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 7
- 230000006641 stabilisation Effects 0.000 claims abstract description 32
- 238000011105 stabilization Methods 0.000 claims abstract description 32
- 238000004146 energy storage Methods 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 239000003990 capacitor Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 3
- 238000010248 power generation Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H02J3/383—
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- H02J3/386—
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The present invention relates to a power stack conversion control stabilization apparatus for a renewable energy generation system, which comprises a plurality of energy storage modules of high capacity in series and in parallel, An output stabilizing unit performing a charging or discharging operation based on the supplied DC voltage; A DC-AC inverter that receives a DC voltage of the renewable energy system and a charging voltage of the energy storage module, converts the DC voltage into a single-phase or three-phase AC voltage, and outputs the AC voltage; A controller for charging the energy storage module through the system power supply when the charging voltage of the energy storage module is reduced to a predetermined value or less; An AC-DC converter for converting the system power supply to a DC voltage and applying the DC power to the output stabilizing unit; And a switch element located between the system power source and the AC-DC converter to determine whether or not the system power is applied to the AC-DC converter.
Description
The present invention relates to an apparatus for stabilizing generation output fluctuation of a renewable energy generation system. In particular, by employing an energy storage module of a very high capacity, stabilized power of electric power production due to climate change at a place of installation of a renewable energy generation system can be reliably And to provide an output fluctuation stabilization module device of a renewable energy generation system that can be provided to a conversion device.
As fossil fuels become depleted, various power sources are being developed using natural power. Generation devices using wind power, sunlight or solar energy (hereinafter referred to as renewable energy generation systems) .
However, there is a drawback that the renewable energy generation system using natural power is greatly affected by the energy generation at the installation site. For example, solar power devices have a disadvantage in that the output power is greatly affected by the intensity and the temperature of the sun, and the wind power device is influenced by the wind strength.
Repeated power generation and shutdown can generate power noise, and the power noise of various load devices can be transferred to shorten the lifespan of the inverter, which plays a role of converting the generated power of the renewable energy generation system to commercial power. Problems arise.
The failure point of the inverter shows that there is a big difference in the capacity of the inverter inside the inverter in the PV system although there is a difference depending on the load. This is because the amount of change due to the change This is because the capacitor can not be controlled properly and the capacitor is ruptured due to impact.
If the power generation is stopped due to the capacitor breakdown of the inverter's internal equipment, the power generation company must suffer a great loss. Therefore, it is necessary to minimize the variability of the power supply applied to the inverter in order to minimize the defective elements of the inverter and to improve the power quality.
In order to solve the above problems, it is an object of the present invention to provide a power stack of a renewable energy generation system capable of minimizing the influence of climate change at a place where a renewable energy generation system is installed, And to provide a power control conversion stabilization device.
The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.
According to an aspect of the present invention, there is provided an energy storage module including a plurality of supercapacitors and charging a DC voltage supplied from a renewable energy system through the plurality of supercapacitors; A DC-DC converter that receives a charging voltage of the energy storage module, boosts the charging voltage, and outputs the boosted voltage; A DC-AC inverter converting the step-up voltage of the DC-DC converter into a single-phase or three-phase AC voltage and outputting the converted AC voltage; And a controller for charging the energy storage module through a system power supply when the charging voltage of the energy storage module is reduced to a predetermined value or less.
The supercapacitor is at least one of an Electric Double Layer Capacitor (EDLC), a Pseudo Capacitor (P-EDLC), and a Hybrid Capacitor.
The apparatus further includes a rectifier rectifying the AC voltage of the renewable energy system to a DC voltage and providing the AC voltage to the energy storage module when the renewable energy system outputs an AC voltage.
According to another aspect of the present invention, there is provided a means for solving the above problems, comprising: a first DC-DC converter for boosting and outputting a DC voltage provided from a first renewable energy system; A rectifier for rectifying the AC voltage supplied from the second renewable energy system to a DC voltage and outputting the rectified AC voltage; A second DC-DC converter for boosting and outputting a DC voltage output from the rectifier; An energy storage module having a plurality of supercapacitors and charging a DC voltage output from the first and second DC-DC converters through the plurality of supercapacitors; A DC-AC inverter converting the charging voltage of the energy storage module into a single-phase or three-phase AC voltage and outputting the AC voltage; And a controller for charging the energy storage module through a system power supply when the charging voltage of the energy storage module is reduced to a predetermined value or less.
By placing a high-capacity energy storage device in front of the inverter device of the present invention, a constant voltage is always applied to the inverter device, thereby suppressing fluctuation of the power generation output due to the change of the sunshine environment of the renewable energy generation system.
1 is a diagram illustrating a power stack power control conversion stabilization apparatus of a renewable energy generation system according to an embodiment of the present invention.
2 is a diagram illustrating an output stabilization module of a renewable energy generation system according to an embodiment of the present invention.
3 is a diagram illustrating a power stack power control conversion stabilization apparatus of a renewable energy generation system according to another embodiment of the present invention.
4 is a diagram illustrating a power stack power control conversion stabilization apparatus of a renewable energy generation system according to another embodiment of the present invention.
5 is a detailed block diagram of a DC controller of a renewable energy generation system according to another embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.
The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like.
The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art to which the present invention pertains. Only. Therefore, the definition should be based on the contents throughout this specification.
FIG. 1 is a diagram showing a power stack power control conversion stabilization apparatus of a renewable energy generation system according to an embodiment of the present invention. In the case where a DC voltage is supplied as generated power, such as a solar
1, the
The
As shown in FIG. 2, the
At this time, each of the supercapacitors provided in the energy storage module may be at least one of an Electric Double Layer Capacitor (EDLC), a Pseudo Capacitor (P-EDLC), and a Hybrid Capacitor.
The energy storage capacity of the
The output averager 120 outputs an averaging operation for the DC voltage output from the
The
The
The AC-
Then, the DC-
FIG. 3 is a diagram showing a power stack power control conversion stabilization apparatus of a renewable energy generation system according to an embodiment of the present invention. In this case, instead of the solar
3, the output
That is, the
That is, in the present invention, by selectively removing or adding the
4 is a diagram illustrating a power stack power control conversion stabilization apparatus of a renewable energy generation system according to another embodiment of the present invention.
4, the output
The
5, the
That is, in the present invention, all of the various renewable energy generation systems having different power supply modes are connected, and the constant voltage is always applied to the DC-
The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.
Claims (5)
A DC-AC inverter that receives a DC voltage of the renewable energy system and a charging voltage of the energy storage module, converts the DC voltage into a single-phase or three-phase AC voltage, and outputs the AC voltage;
A controller for charging the energy storage module through the system power supply when the charging voltage of the energy storage module is reduced to a predetermined value or less;
An AC-DC converter for converting the system power supply to a DC voltage and applying the DC power to the output stabilizing unit; And
And a switch element located between the system power source and the AC-DC converter to determine whether or not the system power is applied to the AC-DC converter.
Further comprising a function of adjusting an energy storage capacity of the output stabilization module by changing a connection structure of the plurality of energy storage modules according to a user control value. Device.
Wherein each of the plurality of supercapacitors is at least one of an Electric Double Layer Capacitor (EDLC), a Pseudo Capacitor (P-EDLC), and a Hybrid Capacitor Power Stack Power Control Transform Stabilizer for Renewable Energy Generation System Features.
Further comprising a rectifier rectifying the AC voltage of the renewable energy system to a DC voltage and providing the rectified voltage to the energy storage module when the renewable energy system outputs an AC voltage, Stack power control conversion stabilization device.
When a first renewable energy system for outputting a DC voltage and a second renewable energy system for outputting an AC voltage are simultaneously connected,
A first booster converter for boosting a DC voltage of the first renewable energy system to a preset voltage and outputting the boosted DC voltage;
A second booster converter for boosting the DC voltage of the second renewable energy system rectified by the rectifier to a predetermined voltage and outputting the boosted DC voltage; And
Further comprising a DC link for storing an output voltage of the first and second booster converters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150161100A KR20170057689A (en) | 2015-11-17 | 2015-11-17 | Apparatus for stabilizing power control of power stack in new renewable generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150161100A KR20170057689A (en) | 2015-11-17 | 2015-11-17 | Apparatus for stabilizing power control of power stack in new renewable generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20170057689A true KR20170057689A (en) | 2017-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150161100A KR20170057689A (en) | 2015-11-17 | 2015-11-17 | Apparatus for stabilizing power control of power stack in new renewable generator |
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| Country | Link |
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| KR (1) | KR20170057689A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107528383A (en) * | 2017-10-16 | 2017-12-29 | 山西腾然科技有限公司 | A kind of mine hoist super capacitor ups power device |
-
2015
- 2015-11-17 KR KR1020150161100A patent/KR20170057689A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107528383A (en) * | 2017-10-16 | 2017-12-29 | 山西腾然科技有限公司 | A kind of mine hoist super capacitor ups power device |
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