CN102386634A - Harmonic-interference-free re-generation grid-connection device driven by low-voltage DC - Google Patents
Harmonic-interference-free re-generation grid-connection device driven by low-voltage DC Download PDFInfo
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- CN102386634A CN102386634A CN2011103844963A CN201110384496A CN102386634A CN 102386634 A CN102386634 A CN 102386634A CN 2011103844963 A CN2011103844963 A CN 2011103844963A CN 201110384496 A CN201110384496 A CN 201110384496A CN 102386634 A CN102386634 A CN 102386634A
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- China
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- low
- voltage direct
- voltage
- storage battery
- electricity
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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
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- 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
- Y02E10/76—Power conversion electric or electronic aspects
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Control Of Eletrric Generators (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a harmonic-interference -free re-generation grid-connection device driven by low-voltage DC. The device comprises an energy storage battery, a low-voltage DC motor, and a three-phase AC generator, and is characterized in that the energy storage battery and the low-voltage DC motor are in electric connection; the rotating shaft of the low-voltage DC motor and that of the three-phase AC generator are connected; and the three-phase AC generator is electrically connected with electricity consumption equipment and power network. The invention fundamentally solves the problem that in the power supply for conventional wind power generation, photovoltaic power generation and electricity storage battery, harmonic causes great influence and interferences to the power network, and realizes high-voltage, high-power and high-current grid-connected electricity transmission under a low investment and a low cost. The indexes of the grid-connected output electricity can completely meet the requirements of conventional electricity transmission, the use is safe and reliable, and the demands of electricity market can be met.
Description
Technical field
The present invention relates to a kind of electricity generation grid-connecting device; Especially a kind ofly utilize the energy storage of scale electric power to supply power to the low-voltage direct motor with lithium ion battery; Drag threephase alternator generating by low voltage DC motor again, thereby, belong to electrical equipment technical field to the device of grid power transmission.
Background technology
At present; Wind power generation, photovoltaic generation, electric power energy-storage battery generally all adopt active inversion technology, convert direct current to the transmission of electricity of being incorporated into the power networks behind the alternating current, owing to the harmonic wave that this conversion produced can cause very big influence and interference to electrical network; Can't realize the transmission of electricity of being incorporated into the power networks of low cost, high power, high voltage, big electric current; So cause follow-up equipment investments such as existing wind power generation, photovoltaic generation, electric power energy-storage battery big, cost is high, a series of problems such as operating cost height.If can keep under the situation of normal power supply, can eliminate influence and interference that multiple harmonic causes electrical network again, with the investment and the cost that greatly reduce electric power supply system equipments such as wind power generation, photovoltaic generation, electric power energy-storage battery, and can satisfy the demand of electricity market.
Summary of the invention
The object of the present invention is to provide the electrically driven (operated) no Harmonic Interference of a kind of low-voltage direct electricity generation grid-connecting device again; With make full use of the energy storage of scale electric power with battery (like lithium ion battery etc.) to the power supply of low-voltage direct motor, drag the threephase alternator generating by low voltage DC motor again and to grid power transmission.
The present invention accomplishes through following technical proposal: the electrically driven (operated) no Harmonic Interference of a kind of low-voltage direct is electricity generation grid-connecting device again; Comprise energy-storage battery, low-voltage direct motor, threephase alternator; It is characterized in that electrically connecting of energy-storage battery and low-voltage direct motor, the rotating shaft of low-voltage direct motor links to each other with the threephase alternator rotating shaft, and threephase alternator electrically connects with power consumption equipment and electrical network respectively; So that to the low-voltage direct motor electric energy is provided through energy-storage battery; Drag threephase alternator by the low-voltage direct motor again and rotate and generate electricity, and alternating current is provided, perhaps be incorporated into the power networks and carry no Harmonic Interference alternating current to power consumption equipment.
Said energy-storage battery is conventional lithium ion battery or other chemical energy-storage battery.
Said low-voltage direct motor is a conventional equipment.
Said generator is conventional threephase alternator.
Said electrical network is conventional power transmission network.
The present invention compared with prior art has advantage and effect: adopt such scheme; The power supply that has fundamentally solved existing wind power generation, photovoltaic generation, electric power energy-storage battery causes the problem of very big influence and interference because of there being harmonic wave to electrical network; Under low investment, low-cost situation, can realize that high voltage, high power, big electric current are incorporated into the power networks and carry electricity, the electric index of the output of being incorporated into the power networks can satisfy the requirement that conventional electric power is carried fully; And safe and reliable, to satisfy the demand of electricity market.
Description of drawings
Fig. 1 is the present invention's structured flowchart.
Embodiment
Below in conjunction with accompanying drawing the present invention is done and to further describe.
As shown in Figure 1, the electrically driven (operated) no Harmonic Interference electricity generation grid-connecting device of low-voltage direct provided by the invention comprises conventional lithium ion battery 1, low-voltage direct motor 2, threephase alternator 3; Wherein, Lithium ion battery 1 electrically connects with low-voltage direct motor 2, and the rotating shaft of low-voltage direct motor 2 links to each other with the rotating shaft of threephase alternator 3, and threephase alternator 3 electrically connects with power consumption equipment 4 and electrical network 5 respectively; To make full use of lithium ion battery 1 to 2 power supplies of low-voltage direct motor; After driving threephase alternator 3 generatings by low-voltage direct motor 2 again, to power consumption equipment 4 alternating current is provided, the alternating current of the no Harmonic Interference of 5 conveyings that perhaps is connected to the grid.
Claims (5)
1. the electrically driven (operated) no Harmonic Interference of low-voltage direct electricity generation grid-connecting device again; Comprise energy-storage battery, low-voltage direct motor, threephase alternator; It is characterized in that electrically connecting of energy-storage battery and low-voltage direct motor, the rotating shaft of low-voltage direct motor links to each other with the threephase alternator rotating shaft, and threephase alternator electrically connects with power consumption equipment and electrical network respectively; So that to the low-voltage direct motor electric energy is provided through energy-storage battery; Drag threephase alternator by the low-voltage direct motor again and rotate and generate electricity, and alternating current is provided, perhaps be incorporated into the power networks and carry no Harmonic Interference alternating current to power consumption equipment.
2. the electrically driven (operated) no Harmonic Interference of low-voltage direct according to claim 1 is electricity generation grid-connecting device again, it is characterized in that said energy-storage battery is conventional lithium ion battery or other chemical energy-storage battery.
3. the electrically driven (operated) no Harmonic Interference of low-voltage direct according to claim 1 is electricity generation grid-connecting device again, it is characterized in that said low-voltage direct motor is a conventional equipment.
4. the electrically driven (operated) no Harmonic Interference of low-voltage direct according to claim 1 is electricity generation grid-connecting device again, it is characterized in that said generator is conventional threephase alternator.
5. the electrically driven (operated) no Harmonic Interference of low-voltage direct according to claim 1 is electricity generation grid-connecting device again, it is characterized in that said electrical network is conventional power transmission network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103844963A CN102386634A (en) | 2011-11-28 | 2011-11-28 | Harmonic-interference-free re-generation grid-connection device driven by low-voltage DC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103844963A CN102386634A (en) | 2011-11-28 | 2011-11-28 | Harmonic-interference-free re-generation grid-connection device driven by low-voltage DC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102386634A true CN102386634A (en) | 2012-03-21 |
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ID=45825752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103844963A Pending CN102386634A (en) | 2011-11-28 | 2011-11-28 | Harmonic-interference-free re-generation grid-connection device driven by low-voltage DC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102386634A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337872A (en) * | 2013-06-07 | 2013-10-02 | 国家电网公司 | Device enabling wind-generated electricity to charge power grid |
| CN103475272A (en) * | 2013-10-11 | 2013-12-25 | 许有华 | Sunlight power generation device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004222341A (en) * | 2003-01-09 | 2004-08-05 | Matsushita Electric Ind Co Ltd | Power supply system |
| CN1523727A (en) * | 2003-09-09 | 2004-08-25 | 刘宝生 | AC-DC-AC grid-connected type rotary inverter power supply |
| CN201821250U (en) * | 2010-04-30 | 2011-05-04 | 泰安市岱岳区科源电器安装有限公司 | Direct current and alternating current generator |
-
2011
- 2011-11-28 CN CN2011103844963A patent/CN102386634A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004222341A (en) * | 2003-01-09 | 2004-08-05 | Matsushita Electric Ind Co Ltd | Power supply system |
| CN1523727A (en) * | 2003-09-09 | 2004-08-25 | 刘宝生 | AC-DC-AC grid-connected type rotary inverter power supply |
| CN201821250U (en) * | 2010-04-30 | 2011-05-04 | 泰安市岱岳区科源电器安装有限公司 | Direct current and alternating current generator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337872A (en) * | 2013-06-07 | 2013-10-02 | 国家电网公司 | Device enabling wind-generated electricity to charge power grid |
| CN103475272A (en) * | 2013-10-11 | 2013-12-25 | 许有华 | Sunlight power generation device |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120321 |