CN202616801U - Photovoltaic/ storage-battery hybrid distribution-type power generation system based on current inverter - Google Patents

Photovoltaic/ storage-battery hybrid distribution-type power generation system based on current inverter Download PDF

Info

Publication number
CN202616801U
CN202616801U CN2012201258695U CN201220125869U CN202616801U CN 202616801 U CN202616801 U CN 202616801U CN 2012201258695 U CN2012201258695 U CN 2012201258695U CN 201220125869 U CN201220125869 U CN 201220125869U CN 202616801 U CN202616801 U CN 202616801U
Authority
CN
China
Prior art keywords
current
converter
voltage
photovoltaic
inverter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2012201258695U
Other languages
Chinese (zh)
Inventor
王政
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southeast University
Original Assignee
Southeast University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Southeast University filed Critical Southeast University
Priority to CN2012201258695U priority Critical patent/CN202616801U/en
Application granted granted Critical
Publication of CN202616801U publication Critical patent/CN202616801U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers

Abstract

The utility model discloses a photovoltaic/storage-battery hybrid distribution-type power generation system based on a current inverter. The photovoltaic/storage-battery hybrid distribution-type power generation system based on the current inverter includes a first voltage/current transformer or a second voltage/current transformer and a third voltage/current transformer, a storage battery, a bidirectional power boosting DC/DC converter connected with the storage battery, a photovoltaic battery panel, a unidirectional power boosting DC/DC converter connected with an output terminal of the photovoltaic battery panel, and a current-type grid-connected inverter. In one embodiment, the bidirectional power boosting DC/DC converter and the unidirectional power boosting DC/DC converter are connected with the current-type grid-connected inverter through the first voltage/current transformer. In another embodiment, the bidirectional power boosting DC/DC converter and the unidirectional power boosting DC/DC converter are connected with the current-type grid-connected inverter through the second voltage/current transformer and the third voltage/current transformer respectively. Since the photovoltaic/storage-battery hybrid distribution-type power generation system based on the current inverter provided by the utility model is based on the current-type grid-connected inverter, the photovoltaic/storage-battery hybrid distribution-type power generation system based on the current inverter has advantages of the current-type grid-connected inverter. Since a photovoltaic system and a storage battery system share the current-type grid-connected inverter, the cost is reduced.

Description

A kind of photovoltaic/storage battery hybrid distributed formula electricity generation system based on current inverter
Technical field
The utility model relates to a kind of electricity generation system, is specifically related to a kind of photovoltaic based on current inverter/storage battery hybrid distributed formula electricity generation system, belongs to electrician, power electronics, generation of electricity by new energy technical field.
Background technology
Present high-power combining inverter mainly contains voltage-source type and current source type two big classes.Since the control of constant, the alternating voltage of DC bus-bar voltage directly, and the voltage source type converter switching device be widely used, the generating research that distributes of present most of inverse type all is based on voltage source inverter.The generating of comparison with voltage inverse type, current inversion type distribute to generate electricity and have the characteristics of self: (1) topological structure is simple.(2) the inverter output voltage waveform is good, and dv/dt is little.(3) inverter PWM strategy is simple.(4) the short circuit current protective capability is strong.During the electrical network failed because, the inverter direct-flow side inductance has metering function preferably.(5) because output waveform is approaching sinusoidal wave, the cable length that is incorporated into the power networks of inverter allows longer.(6) current source inverter self has boost function.Can regenerative resource (like photovoltaic cell) output directly be inserted electrical network through inverter, need not the DC/DC booster converter.(7) inductive effect of part dc bus inductance cable capable of using realizes, the dc bus inductance has the long life-span.(8) current inversion type distribution generating dynamic property can satisfy regenerative resource variable power requirements such as wind-force, photovoltaic fully.
Domestic and international most grid-connected photovoltaic systems all are based on voltage source inverter at present, and current inversion type grid-connected system seldom; And the accumulator charging/discharging system based on current source inverter is also considerably less.
Because the power output of renewable energy systems such as photovoltaic has intermittent characteristics, therefore give the transmission of electricity destabilizing factor that electrical network brings, limited being incorporated into the power networks on a large scale based on renewable energy source distribution generating.So need energy-storage system such as battery system to participate in the level and smooth of power output in the reality, compensate the unstable power output of regenerative resource.On the other hand, when main electrical network overhauls or breaks down, break and local load forms the isolated island electrical network together from main electrical network based on the distribution generating meeting of regenerative resource, the generating that at this moment distributes needs to give the locality load in the isolated island electrical network that the energy is provided.And it is unstable based on the distribution generating of regenerative resource owing to its power output; Can not balance with local power load in the isolated island electrical network, therefore must cooperate and fill up the power difference between the local power load in distribution electricity generation system power output and the isolated island electrical network by energy-storage system.
Traditional photovoltaic and battery system link in grid side through combining inverter separately, need at least two cover combining inverters like this, thereby have increased the cost of system.
The utility model content
Deficiency to the prior art existence; The utility model purpose provides a kind of photovoltaic based on current inverter that reduces cost and have current mode combining inverter advantage/storage battery hybrid distributed formula electricity generation system; The not only smoothly transient output of photovoltaic battery panel output, and under the isolated island electrical network, have the ability that supports line voltage.
To achieve these goals, the utility model is to realize through following technical scheme:
The utility model comprises second voltage/current converter and the tertiary voltage/power pack of the first voltage/current converter or series connection, all is used for voltage transitions is become electric current; Storage battery; Bidirectional power voltage boosting dc/DC converter is connected with storage battery, is used for storage battery is discharged and recharged; Photovoltaic battery panel; Unidirectional power voltage boosting dc/DC converter is connected with the photovoltaic battery panel output, is used for sending the energy that photovoltaic battery panel sends to first voltage/current converter or tertiary voltage/power pack; With the current mode combining inverter, be connected with the electrical network input, be used for converting the direct current of the first voltage/current converter or the second voltage/current converter and tertiary voltage/power pack output to alternating current; Bidirectional power voltage boosting dc/DC converter all is connected with current mode combining inverter input through the first voltage/current converter with unidirectional power voltage boosting dc/DC converter output, or bidirectional power voltage boosting dc/DC converter is connected with current mode combining inverter input with tertiary voltage/power pack through the second voltage/current converter respectively with unidirectional power voltage boosting dc/DC converter output.
Two outputs of above-mentioned storage battery, photovoltaic battery panel, bidirectional power voltage boosting dc/DC converter and unidirectional power voltage boosting dc/DC converter all are parallel with electric capacity, are used to reduce voltage ripple.
Above-mentioned current mode combining inverter is connected with electrical network through inductance, is used to reduce the grid-connected current harmonic wave, realizes grid-connected current control.
The said system structure has generality, integrated applicable to other regenerative resource and energy-storage system.Wherein, photovoltaic battery panel can be replaced by fuel cell, and storage battery can be replaced by super capacitor.
Therefore photovoltaic/battery system that the utility model proposed has advantages such as current inversion type distributed power generation topological structure is simple, the fault-current protection ability is strong, have boost function, the DC side energy storage device inductance life-span is long based on the current mode combining inverter; The shared current mode combining inverter of photovoltaic system of the utility model and battery system has been practiced thrift cost, and control directly, simply; The utility model with storage battery and photovoltaic system in the DC side effective integration, the not only smoothly transient output of photovoltaic battery panel output, and system is had under the isolated island electrical network, have the ability that supports line voltage; When the electrical network failed because, energy can effectively store in the storage battery in the photovoltaic, has avoided the grid-connected current overcurrent.
Description of drawings
Fig. 1 is the photovoltaic based on current inverter/storage battery parallel connection mixed type distributed generation system structural representation that the utility model proposed;
Fig. 2 is the photovoltaic based on current inverter/storage battery series hybrid type distributed generation system structural representation that the utility model proposed;
Fig. 3 is the specific embodiments sketch map of the photovoltaic based on current inverter/storage battery hybrid distributed formula electricity generation system that the utility model proposed.
Each label among the figure: storage battery 1, bidirectional power voltage boosting dc/DC converter 2, photovoltaic battery panel 3; Unidirectional power voltage boosting dc/DC converter 4, the first voltage/current converter 5-1, the second voltage/current converter 5-2; Tertiary voltage/power pack 5-3, current mode combining inverter 6, electrical network 7; Current inversion type photovoltaic generating system 8, nonlinear load 9 is based on the photovoltaic/storage battery parallel connection mixed type distributed generation system 10 of current inverter; Current inversion type wind generator system 11 is based on photovoltaic/storage battery series hybrid type distributed generation system 12, the first linear loads 13 of current inverter; First circuit breaker, 14, the second circuit breakers, 15, the second linear loads 16.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with embodiment, further set forth the utility model.
The utility model proposes two kinds of concrete structures: first kind of photovoltaic/10, the second kinds of photovoltaic/storage battery series hybrid type distributed generation system 12 that are based on current inverter of storage battery parallel connection mixed type distributed generation system that are based on current inverter.
Wherein, the photovoltaic/storage battery parallel connection mixed type distributed generation system 10 based on current inverter comprises the first voltage/current converter 5-1, storage battery 1, the bidirectional power voltage boosting dc/DC converter 2 that is connected with storage battery 1, photovoltaic battery panel 3, unidirectional power voltage boosting dc/DC converter 4 that is connected with photovoltaic battery panel 3 outputs and the current mode combining inverter 6 that is connected with electrical network 7 inputs; Bidirectional power voltage boosting dc/DC converter 2 all is connected with current mode combining inverter 6 inputs through the first voltage/current converter 5-1 with unidirectional power voltage boosting dc/DC converter 4 outputs.
In this system; Photovoltaic system is parallelly connected at the direct current voltage bus place through bidirectional power voltage boosting dc/DC converter 2 through unidirectional power voltage boosting dc/DC converter 4, battery system; This direct current voltage bus links through the public first voltage/current converter 5-1 and a direct current bus, and this direct current bus inserts electrical network 7 through current mode combining inverter 6 again.
Referring to Fig. 1, storage battery 1 links through the bidirectional power voltage boosting dc/DC converter 2 and the first voltage/current converter 5-1, and bidirectional power voltage boosting dc/DC converter 2 is used for storage battery 1 is discharged and recharged.Photovoltaic battery panel 3 links through the unidirectional power voltage boosting dc/DC converter 4 and the first voltage/current converter 5-1, is used for sending the energy that photovoltaic battery panel 3 sends to first voltage/current converter 5-1.Unidirectional power voltage boosting dc/DC converter 4 is parallelly connected at outlet side with bidirectional power voltage boosting dc/DC converter 2.The first voltage/current converter 5-1 changes into electric current with the output voltage of bidirectional power voltage boosting dc/DC converter 2 and unidirectional power voltage boosting dc/DC converter 4, and links with current mode combining inverter 6.Direct current is changed into the interchange grid-connected current to current mode combining inverter 6 and electrical network 7 links.
Wherein, the second voltage/current converter 5-2 and tertiary voltage/power pack 5-3, storage battery 1, the bidirectional power voltage boosting dc/DC converter 2 that is connected with storage battery 1, photovoltaic battery panel 3, unidirectional power voltage boosting dc/DC converter 4 that is connected with photovoltaic battery panel 3 outputs and the current mode combining inverter 6 that is connected with electrical network 7 inputs that comprise series connection based on the photovoltaic/storage battery series hybrid type distributed generation system 12 of current inverter; Bidirectional power voltage boosting dc/DC converter 2 is connected with current mode combining inverter 6 inputs with tertiary voltage/power pack 5-3 through the second voltage/current converter 5-2 respectively with unidirectional power voltage boosting dc/DC converter 4 outputs.
In this system, photovoltaic system and battery system are respectively through independently voltage/current converter (the second voltage/current converter 5-2, tertiary voltage/power pack 5-3) and public current mode combining inverter 6 direct current buses link.Like this, the voltage/current converter of photovoltaic system and battery system will form series connection at direct current bus place.
Referring to Fig. 2, storage battery 1 links through the bidirectional power voltage boosting dc/DC converter 2 and the second voltage/current converter 5-2, and bidirectional power voltage boosting dc/DC converter 2 is used for storage battery 1 is discharged and recharged.Photovoltaic battery panel 3 links through unidirectional power voltage boosting dc/DC converter 4 and tertiary voltage/power pack 5-3, and the energy that photovoltaic battery panel 3 is sent sends tertiary voltage/power pack 5-3 to.The second voltage/current converter 5-2 changes into electric current with the output voltage of bidirectional power voltage boosting dc/DC converter 2, and tertiary voltage/power pack 5-3 changes into electric current with the output voltage of unidirectional power voltage boosting dc/DC converter 4.The output of the output of the second voltage/current converter 5-2 and tertiary voltage/power pack 5-3 series connection, and link with the dc bus of current mode combining inverter 6.Direct current is changed into the interchange grid-connected current to current mode combining inverter 6 and electrical network 7 links.
In the photovoltaic/storage battery parallel connection mixed type distributed generation system 10 and photovoltaic/storage battery series hybrid type distributed generation system 12 based on current inverter, all be parallel with electric capacity at two outputs of storage battery 1, photovoltaic battery panel 3, bidirectional power voltage boosting dc/DC converter 2 and unidirectional power voltage boosting dc/DC converter 4 based on current inverter; Current mode combining inverter 6 is connected with electrical network 7 through inductance; Photovoltaic battery panel 3 can be replaced by fuel cell, and storage battery 1 can be replaced by super capacitor.And two kinds of systems all form widenable to a plurality of photovoltaic passage and a plurality of accumulator channels that are made up of storage battery 1 and bidirectional power voltage boosting dc/DC converter 2 that are made up of photovoltaic battery panel 3 and unidirectional power voltage boosting dc/DC converter 4.
Bidirectional power voltage boosting dc/DC converter 2 of mentioning in the utility model; Unidirectional power voltage boosting dc/DC converter 4; The first voltage/current converter 5-1; The second voltage/current converter 5-2, tertiary voltage/power pack 5-3 and current mode combining inverter 6 are existing device, repeat no more here.
Referring to Fig. 3; Current inversion type photovoltaic generating system 8, photovoltaic/storage battery parallel connection mixed type distributed generation system 10, current inversion type wind generator system 11, parallelly connected in electrical network 7 sides based on the photovoltaic/storage battery series hybrid type distributed generation system 12 of current inverter based on current inverter, and also connected nonlinear load 9, first linear load 13 and second linear load 16 in the electrical network 7.
When first circuit breaker 14 and second circuit breaker, 15 equal closures, all systems all are incorporated into the power networks among Fig. 3.Current inversion type photovoltaic generating system 8, the photovoltaic/storage battery parallel connection mixed type distributed generation system 10 based on current inverter, current inversion type wind generator system 11, meritorious based on the AC side output of the photovoltaic/storage battery series hybrid type distributed generation system 12 of current inverter, reactive power is by combining inverter control separately.
When first circuit breaker 14 is broken off, current inversion type photovoltaic generating system 8 among Fig. 3, nonlinear load 9, photovoltaic/storage battery parallel connection mixed type distributed generation system 10, current inversion type wind generator system 11, form the isolated island electrical networks based on photovoltaic/storage battery series hybrid type distributed generation system 12, second linear load 16 of current inverter based on current inverter.At this moment, will realize respective output voltages control, coordinate control based on the photovoltaic/storage battery parallel connection mixed type distributed generation system 10 of current inverter with based on the photovoltaic/storage battery series hybrid type distributed generation system 12 of current inverter.Because these the two kinds photovoltaic based on current inverter/storage battery hybrid distributed formula power generation system structures both can inject electric energy in electrical network; Also can from electrical network, absorb electric energy; Therefore can compensate the difference between generating and power load in the isolated island electrical network, can be used for supporting the voltage of isolated island electrical network.
More than show and described basic principle of the utility model and the advantage of principal character and the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection range to be defined by appending claims and equivalent thereof.

Claims (4)

1. the photovoltaic based on current inverter/storage battery hybrid distributed formula electricity generation system is characterized in that, comprises
The second voltage/current converter (5-2) of the first voltage/current converter (5-1) or series connection and tertiary voltage/power pack (5-3) all are used for voltage transitions is become electric current;
Storage battery (1);
Bidirectional power voltage boosting dc/DC converter (2) is connected with storage battery (1), is used for storage battery (1) is discharged and recharged;
Photovoltaic battery panel (3);
Unidirectional power voltage boosting dc/DC converter (4) is connected with photovoltaic battery panel (3) output, is used for sending the energy that photovoltaic battery panel (3) sends to the first voltage/current converter (5-1) or tertiary voltage/power pack (5-3);
With current mode combining inverter (6), be connected with electrical network (7) input, be used for converting the direct current of the first voltage/current converter (5-1) or the second voltage/current converter (5-2) and tertiary voltage/power pack (5-3) output to alternating current;
Said bidirectional power voltage boosting dc/DC converter (2) all is connected with current mode combining inverter (6) input through the first voltage/current converter (5-1) with unidirectional power voltage boosting dc/DC converter (4) output, or said bidirectional power voltage boosting dc/DC converter (2) is connected with current mode combining inverter (6) input with tertiary voltage/power pack (5-3) through the second voltage/current converter (5-2) respectively with unidirectional power voltage boosting dc/DC converter (4) output.
2. the photovoltaic based on current inverter according to claim 1/storage battery hybrid distributed formula electricity generation system is characterized in that,
Two outputs of said storage battery (1), photovoltaic battery panel (3), bidirectional power voltage boosting dc/DC converter (2) and unidirectional power voltage boosting dc/DC converter (4) all are parallel with electric capacity.
3. the photovoltaic based on current inverter according to claim 1/storage battery hybrid distributed formula electricity generation system is characterized in that,
Said current mode combining inverter (6) is connected with electrical network (7) through inductance.
4. according to any described photovoltaic of claim 1 to 3/storage battery hybrid distributed formula electricity generation system, it is characterized in that based on current inverter,
Said photovoltaic battery panel (3) can be replaced by fuel cell, and said storage battery (1) can be replaced by super capacitor.
CN2012201258695U 2012-03-29 2012-03-29 Photovoltaic/ storage-battery hybrid distribution-type power generation system based on current inverter Expired - Fee Related CN202616801U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012201258695U CN202616801U (en) 2012-03-29 2012-03-29 Photovoltaic/ storage-battery hybrid distribution-type power generation system based on current inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012201258695U CN202616801U (en) 2012-03-29 2012-03-29 Photovoltaic/ storage-battery hybrid distribution-type power generation system based on current inverter

Publications (1)

Publication Number Publication Date
CN202616801U true CN202616801U (en) 2012-12-19

Family

ID=47350471

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012201258695U Expired - Fee Related CN202616801U (en) 2012-03-29 2012-03-29 Photovoltaic/ storage-battery hybrid distribution-type power generation system based on current inverter

Country Status (1)

Country Link
CN (1) CN202616801U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102624030A (en) * 2012-03-29 2012-08-01 东南大学 Photovoltaic/storage battery mixed type current inverter-based distributed generation system
CN103475014A (en) * 2013-08-22 2013-12-25 国家电网公司 Electric energy quality controller of wind driven generator based on battery energy storage and control method
CN103683472A (en) * 2013-12-04 2014-03-26 深圳科士达新能源有限公司 Hybrid inverter with uninterruptible power supply function
CN107112916A (en) * 2014-11-24 2017-08-29 Ce+T卢森堡电力公司 DC AC power converters
WO2017197629A1 (en) * 2016-05-19 2017-11-23 胡炎申 Current source inverter system and inverter device
CN110601542A (en) * 2019-09-11 2019-12-20 哈尔滨工程大学 Energy storage isolation type three-port DC-DC converter of photovoltaic system and control method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102624030A (en) * 2012-03-29 2012-08-01 东南大学 Photovoltaic/storage battery mixed type current inverter-based distributed generation system
CN103475014A (en) * 2013-08-22 2013-12-25 国家电网公司 Electric energy quality controller of wind driven generator based on battery energy storage and control method
CN103475014B (en) * 2013-08-22 2015-04-01 国家电网公司 Electric energy quality controller of wind driven generator based on battery energy storage and control method
CN103683472A (en) * 2013-12-04 2014-03-26 深圳科士达新能源有限公司 Hybrid inverter with uninterruptible power supply function
CN107112916A (en) * 2014-11-24 2017-08-29 Ce+T卢森堡电力公司 DC AC power converters
WO2017197629A1 (en) * 2016-05-19 2017-11-23 胡炎申 Current source inverter system and inverter device
CN110601542A (en) * 2019-09-11 2019-12-20 哈尔滨工程大学 Energy storage isolation type three-port DC-DC converter of photovoltaic system and control method
CN110601542B (en) * 2019-09-11 2021-03-26 哈尔滨工程大学 Energy storage isolation type three-port DC-DC converter of photovoltaic system and control method

Similar Documents

Publication Publication Date Title
CN202616801U (en) Photovoltaic/ storage-battery hybrid distribution-type power generation system based on current inverter
US10308140B2 (en) Renewable energy-based hybrid bi-directionally interactive DC traction power supply system
CN103545905B (en) A kind of photovoltaic direct-current micro-grid energy coordination control method
CN102624030A (en) Photovoltaic/storage battery mixed type current inverter-based distributed generation system
CN103427430B (en) A kind of energy management method of mixed energy storage system in microgrid
CN103647302A (en) Multi-sub microgrid-contained mixed microgrid system and control method thereof
CN203850910U (en) Electrical vehicle power supply device based on direct-current microgrid
CN103606942B (en) A kind of mixed liquor stream energy-storage system with no-power compensation function
CN106602565A (en) Electric vehicle charging station power supply system based on solid-state transformer
CN104426157A (en) Energy storage module and energy storage device
CN203800680U (en) Large power bidirectional deflector capable of supporting access of multiple cell groups
CN102684183A (en) DC LAN (Direct Current Local Area Network)-based distributed power generation system and control method
CN103944180A (en) Hybrid energy storage wind/PV hybrid generation system based on solid state transformer
CN106877368A (en) A kind of photovoltaic generation micro-grid system hybrid energy-storing control method
CN202712876U (en) Solar photovoltaic microgrid grid-connected power generation system
CN103915856A (en) Base station grid connected-charging photovoltaic micro-inverter system and control method thereof
CN202633939U (en) DC LAN (Direct Current Local Area Network)-based distributed power generation system
CN105811453A (en) Distributed energy intelligent access system and access method thereof
CN103280844A (en) Alternating/direct current hybrid multi-level micro grid system
CN203813692U (en) Hybrid energy storage inverter system based on storage battery and super capacitor
CN203722249U (en) Distributed photovoltaic grid-connected power generation system
CN202616803U (en) Hybrid current-inversion-type power generation system using wind, light and superconducting magnetic energy storage
CN104242790A (en) Wind-solar hybrid power generation system
CN205407292U (en) Distributing type energy intelligence access system
CN202513586U (en) Intelligent micro-grid using renewable energy for generating power

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121219

Termination date: 20130329

C17 Cessation of patent right