CN202513585U - Non-harmonic-interference regenerative power generation grid-tied unit driven by low-voltage direct current - Google Patents

Non-harmonic-interference regenerative power generation grid-tied unit driven by low-voltage direct current Download PDF

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Publication number
CN202513585U
CN202513585U CN2011204812471U CN201120481247U CN202513585U CN 202513585 U CN202513585 U CN 202513585U CN 2011204812471 U CN2011204812471 U CN 2011204812471U CN 201120481247 U CN201120481247 U CN 201120481247U CN 202513585 U CN202513585 U CN 202513585U
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China
Prior art keywords
low
voltage direct
direct current
grid
interference
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Expired - Lifetime
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CN2011204812471U
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Chinese (zh)
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余建岳
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Individual
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Individual
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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
    • 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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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The utility model provides a non-harmonic-interference regenerative power generation grid-tied unit driven by low-voltage direct current. The non-harmonic-interference regenerative power generation grid-tied unit driven by the low-voltage direct current includes an energy storage battery, a low-voltage direct current motor, and a three-phase alternating current generator. The non-harmonic-interference regenerative power generation grid-tied unit driven by the low-voltage direct current is characterized in that the energy storage battery connects with the low-voltage direct current motor electrically; a spindle of the low-voltage direct current motor connects with a spindle of the three-phase alternating current generator; and the three-phase alternating current generator respectively connects with an electric device and a power grid electrically. Therefore, problems of great influence and interference on the power grid caused by the existence of harmonic waves in wind generation, photovoltaic generation and the power supply of the electric energy storage battery are solved. High-voltage, high-power and large-current grid-tied power transmission is realized with low investment and at low cost. Indexes of electricity output in the grid-tied manner can satisfy requirements of common power transmission. And the non-harmonic-interference regenerative power generation grid-tied unit driven by the low-voltage direct current is safe and reliable, thereby meeting requirements of electricity market.

Description

The electrically driven (operated) no Harmonic Interference of a kind of low-voltage direct is electricity generation grid-connecting device again
Technical field
The utility model 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 purpose of the utility model 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 utility model is accomplished 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 utility model 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 the conveying of being incorporated into the power networks of high voltage, high power, big electric current; The electric index of exporting that is 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 structured flowchart of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be further described.
As shown in Figure 1, the electrically driven (operated) no Harmonic Interference electricity generation grid-connecting device of the low-voltage direct that the utility model provides 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 (4)

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.
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 a lithium ion 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 generator is a threephase alternator.
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 electrical network is a power transmission network.
CN2011204812471U 2011-11-28 2011-11-28 Non-harmonic-interference regenerative power generation grid-tied unit driven by low-voltage direct current Expired - Lifetime CN202513585U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204812471U CN202513585U (en) 2011-11-28 2011-11-28 Non-harmonic-interference regenerative power generation grid-tied unit driven by low-voltage direct current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204812471U CN202513585U (en) 2011-11-28 2011-11-28 Non-harmonic-interference regenerative power generation grid-tied unit driven by low-voltage direct current

Publications (1)

Publication Number Publication Date
CN202513585U true CN202513585U (en) 2012-10-31

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CN2011204812471U Expired - Lifetime CN202513585U (en) 2011-11-28 2011-11-28 Non-harmonic-interference regenerative power generation grid-tied unit driven by low-voltage direct current

Country Status (1)

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CN (1) CN202513585U (en)

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Granted publication date: 20121031