CN203827203U - High-power optical storage integrated converter - Google Patents
High-power optical storage integrated converter Download PDFInfo
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- CN203827203U CN203827203U CN201420208376.7U CN201420208376U CN203827203U CN 203827203 U CN203827203 U CN 203827203U CN 201420208376 U CN201420208376 U CN 201420208376U CN 203827203 U CN203827203 U CN 203827203U
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- 230000003287 optical effect Effects 0.000 title abstract 4
- 239000003990 capacitor Substances 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims description 37
- 238000004146 energy storage Methods 0.000 claims description 33
- 230000006698 induction Effects 0.000 claims description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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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
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Abstract
The utility model discloses a high-power optical storage integrated converter, relates to the technical field of distributed generation power electronic equipment, and aims to provide an optical storage integrated converter capable of effectively reducing a battery side harmonic current. The main point of the technical scheme is that the high-power optical storage integrated converter comprises a photovoltaic battery DC branch circuit, a power storage battery DC branch circuit, a bus capacitor and an AC branch circuit. In the power storage DC branch circuit, a power storage battery, a switch Q1, a first DC branch circuit filter, a first LCL filter network and a first bidirectional half-bridge circuit are connected in sequence; the first bidirectional half-bridge circuit is connected to the bus capacitor; and the photovoltaic battery DC branch circuit and the power storage battery DC branch circuit have the same structure. In the AC branch circuit, a three-phase inverter unit is connected to a DC bus, and the three-phase inverter unit, a three-phase LCL filter network, a switch KM3 and an AC filter are connected in sequence with a three-phase AC wiring terminal.
Description
Technical field
The utility model relates to a kind of power electronic equipment technical field of distributed power generation, and a kind of photovoltaic combining inverter, the integrated novel current transformer of energy accumulation current converter is specifically applicable to large-scale from, grid-connected photovoltaic energy-accumulating power station.
Background technology
Along with the world to Application of Solar Energy gradually deeply, solar energy power generating starts to play a part more and more important for people's life power supply.In prior art, the unsteadiness of solar energy power generating, day alternates with night etc., and factor has been buried very large hidden danger and threat to the safe and stable operation of electrical network, battery energy storage technology is as supplementing new forms of energy such as photovoltaics, can make whole system become controllable source, ensure the stability of system power scheduling.
But present stage high-power photovoltaic combining inverter and the energy accumulation current converter using from, grid-connected power station be independently to separate, need communication to coordinate between the two, also need to do complicated energy management strategy, cannot meet the instantaneous power demands of electrical network to energy accumulation current converter.In addition, when existing energy accumulation current converter work, battery side harmonic current is larger, affects power supply quality.
Utility model content
Goal of the invention of the present utility model is: for the problem of above-mentioned existence, provide a kind of light storage (photovoltaic combining inverter and energy accumulation current converter) integrated converter that can effectively reduce battery side harmonic current.
The technical solution adopted in the utility model is such: comprise photovoltaic cell direct current branch, energy-storage battery direct current branch, bus capacitor and exchange branch road.
In described energy-storage battery direct current branch, the output of energy-storage battery is connected with the input of the first direct current branch filter by switch Q1, the positive pole of the first direct current branch filter output is connected with the first input end of a LCL filter network, and the negative pole of the first direct current branch filter output is connected with the second input of a LCL filter network; The first output of the one LCL filter network is connected with the first input end of the first bi-directional half bridge circuit, and the second output of a LCL filter network is connected with the second input of the first bi-directional half bridge circuit; The first output of the first bi-directional half bridge circuit is connected with the first terminal of bus capacitor, and the second output of the first bi-directional half bridge circuit is connected with the second terminal of bus capacitor; The output of energy-storage battery is also connected with two inputs of a described LCL filter network by K switch M1, pre-charge resistance R1.
In described photovoltaic cell direct current branch, the output of photovoltaic cell is connected with the input of the second direct current branch filter by switch Q2, the positive pole of the second direct current branch filter output is connected with the first input end of the 2nd LCL filter network, and the negative pole of the second direct current branch filter output is connected with the second input of the 2nd LCL filter network; The first output of the 2nd LCL filter network is connected with the first input end of the second bi-directional half bridge circuit, and the second output of the 2nd LCL filter network is connected with the second input of the second bi-directional half bridge circuit; The first output of the second bi-directional half bridge circuit is connected with the first terminal of bus capacitor, and the second output of the second bi-directional half bridge circuit is connected with the second terminal of bus capacitor; The output of photovoltaic cell is also connected with two inputs of described the 2nd LCL filter network by K switch M2, pre-charge resistance R2.
In interchange branch road, the first input end of three-phase inversion unit is connected with the first terminal of described DC bus, and the second input of three-phase inversion unit is connected with the second terminal of described DC bus; Three lead-out terminals of three-phase inversion unit and the corresponding connection of three inputs of three-phase LCL filter network; Three outputs of three-phase LCL filter network are the corresponding connection of three inputs with alternating current filter by K switch M3, three outputs connection corresponding to three-phase alternating current binding post of described alternating current filter.
Further, the second input of the second input of a described LCL filter network and the 2nd LCL filter network links together; On the branch road being connected with the second input of a LCL filter network at the first DC filter, the second DC filter, K switch M1, K switch M2, also comprise anti-reverse diode.
Further, described bi-directional half bridge circuit comprises two insulated gate bipolar transistors of serial connection up and down, the emitter that is positioned at the insulated gate bipolar transistor of top is connected with the collector electrode of the insulated gate bipolar transistor that is positioned at below, the public connecting end of described two insulated gate bipolar transistors is the first input end of bi-directional half bridge circuit, be positioned at very the second input and second output of bi-directional half bridge circuit of transmitting of the insulated gate bipolar transistor of below, be positioned at very first output of bi-directional half bridge circuit of current collection of the insulated gate bipolar transistor of top.
Further, also comprise 4 voltage detecting circuits and 5 current detection circuits; Wherein, the first voltage detecting circuit is for detection of energy-storage battery voltage; Second voltage testing circuit is for detection of photovoltaic cell voltage; Tertiary voltage testing circuit is for detection of the voltage at bus capacitor two ends; The 4th voltage detecting circuit is for detection of the voltage of three-phase alternating current binding post;
The first current detection circuit is for detection of the electric current in the first direct current branch; The second current detection circuit is for detection of the electric current in the second direct current branch; The 3rd current detection circuit, the 4th current detection circuit and the 5th current detection circuit are respectively used to detect three-phase current in interchange branch road.
Further, exchange in branch road and also comprise lightning protection device.
Further, described K switch M1, K switch M2 and K switch M3 are contactor; Described switch Q1 and switch Q2 are circuit breaker.
Further, also comprise killer switch Q3; Three outputs of described alternating current filter are by switch Q3 connection corresponding to three-phase alternating current binding post.
Further, described energy-storage battery is lithium battery or lead-acid battery.
Further, the induction reactance of the battery side inductance of a LCL filter network is greater than the internal resistance of energy-storage battery; The induction reactance of the battery side inductance of the 2nd LCL filter network is greater than the internal resistance of photovoltaic cell.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are:
1, in the utility model, two direct current branch are connected in parallel, by controlling first, second bi-directional half bridge circuit and AC, you become the mode of operation of unit and the closure state of each switch, and then can to make current transformer work in photovoltaic cell be that energy-storage battery power supply, photovoltaic cell are the multiple operating states such as energy-storage battery power supply for exchanging branch road power supply, photovoltaic cell and energy-storage battery for exchanging branch road power supply and exchanging branch road.
2, in two direct current branch in the utility model, adopt LCL filter network, the inductance L induction reactance of battery side is greater than the internal resistance of photovoltaic cell or energy-storage battery, and the harmonic current of battery side greatly reduces after LCL filter.
3, introduce anti-reverse diode, in the time of battery reversal connection, two direct current branch are in off state, and the battery of reversal connection can't exert an influence to subsequent conditioning circuit and electrical network.
4, the circuit structure of two direct current branch is just the same, and which bar direct current branch making and the production of circuit on the one hand on the other hand in use, need not distinguish for connecting photovoltaic cell, and which bar direct current branch connects energy-storage battery, easy to use.
5, in the utility model, be also provided with multiple voltage detecting circuits and current detection circuit, be convenient to gather voltage and the current signal of different circuit blocks, to supply with corresponding control circuit, provide foundation accurately for controlling.
Brief description of the drawings
Fig. 1 is the utility model circuit theory diagrams.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, comprise photovoltaic cell direct current branch, energy-storage battery direct current branch, bus capacitor and exchange branch road.
In described energy-storage battery direct current branch, the output of energy-storage battery is connected with positive and negative two inputs of direct current branch filter EMC1 respectively by two contacts of killer switch Q1, the positive pole of direct current branch filter EMC1 output is connected with one end of the inductance L 1 as a LCL filter network first input end, the negative pole of direct current branch filter EMC1 output is connected with the other end of the capacitor C 1 as LCL filter network second input, the other end of inductance L 1 is connected with one end of capacitor C 1 and one end of inductance L 2 simultaneously, and the other end of inductance L 2 connects the first input end of the bi-directional half bridge circuit being made up of IGBT1 and IGBT3 as LCL filter network first output, the other end of capacitor C 1 is also connected as the second output of a LCL filter network and the second input of described bi-directional half bridge circuit, inductance L 1, L2 and capacitor C 1 have formed LCL type filter network.
The first output of the first bi-directional half bridge circuit is connected with the first terminal of bus capacitor C3, and the second output of the first bi-directional half bridge circuit is connected with the second terminal of bus capacitor C3.
The output of energy-storage battery is two contacts of corresponding connecting valve KM1 also, a contact of K switch M1 is connected with one end of pre-charge resistance R1, the other end of pre-charge resistance R1 is connected with the first input end of a LCL filter network, and another contact of switch LM1 is connected with the second input of a described LCL filter network.
Described energy-storage battery can be lithium battery or lead-acid battery.
Described photovoltaic cell direct current branch is identical with the structure of energy storage direct current branch, and the output of photovoltaic cell is connected with positive and negative two inputs of the second direct current branch filter by two contacts correspondences of switch Q2.The positive pole of the second direct current branch filter output is connected with the first input end of the 2nd LCL filter network, and the negative pole of the second direct current branch filter output is connected with the second input of the 2nd LCL filter network; The first output of the 2nd LCL filter network is connected with the first input end of the second bi-directional half bridge circuit being made up of IGBT2,4, and the second output of the 2nd LCL filter network is connected with the second input of the second bi-directional half bridge circuit; The first output of the second bi-directional half bridge circuit is connected with the first terminal of bus capacitor C3, and the second output of the second bi-directional half bridge circuit is connected with the second terminal of bus capacitor C3.
The 2nd LCL filter network comprises inductance L 3, L4 and capacitor C 2, one end of inductance L 3 is as the first input end of the 2nd LCL filter network, the other end of inductance L 3 is connected with one end of capacitor C 2, one end of inductance L 4, the other end of inductance L 4 is as the first output of the 2nd LCL filter network, and the other end while of capacitor C 2 is as the second input and second output of the 2nd LCL filter network.
The output of photovoltaic cell is two contacts of corresponding connecting valve KM2 also, a contact of K switch M2 is connected with one end of pre-charge resistance R2, the other end of pre-charge resistance R2 is connected with the first input end of the 2nd LCL filter network, and another contact of switch LM2 is connected with the second input of described the 2nd LCL filter network.
In interchange branch road, the first input end of the three-phase inversion unit being made up of IGBT5 ~ 10 is connected with the first terminal of described DC bus C3, and the second input of three-phase inversion unit is connected with the second terminal of described DC bus C3; Three lead-out terminals of three-phase inversion unit and the corresponding connection of three inputs of three-phase LCL filter network; Three outputs of three-phase LCL filter network are by the corresponding connection of three inputs of three contact switch KM3 and alternating current filter EMC3, three outputs of described alternating current filter and three-phase alternating current binding post U, the corresponding connection of V, W.
The second input of the second input of a described LCL filter network and the 2nd LCL filter network links together; On the branch road being connected with the second input of a LCL filter network at the first DC filter, the second DC filter, K switch M1, K switch M2, also comprise anti-reverse diode, the anode of anti-reverse diode is connected with the second input of a LCL filter network.
Further, described the first bi-directional half bridge circuit comprises two insulated gate bipolar transistor IGBT 1, the IGBT3 of serial connection up and down, the emitter that is positioned at the IGBT1 of top is connected with the collector electrode of the IGBT3 that is positioned at below, the public connecting end of described two insulated gate bipolar transistors is the first input end of the first bi-directional half bridge circuit, be positioned at very the second input and second output of bi-directional half bridge circuit of transmitting of the IGBT3 of below, be positioned at very the first output of the first bi-directional half bridge circuit of current collection of the IGBT1 of top.
The second bi-directional half bridge circuit comprises two insulated gate bipolar transistor IGBT 2, the IGBT4 of serial connection up and down, and its annexation is identical with IGBT1, IGBT3 in the first bi-directional half bridge circuit, does not repeat them here.
The inversion unit exchanging in branch road is also made up of 6 insulated gate bipolar transistor IGBTs 5 ~ 10, and annexation is typical PWM inverter structure.
It is that energy-storage battery power supply, photovoltaic cell are the multiple operating states such as energy-storage battery power supply for exchanging branch road power supply, photovoltaic cell and energy-storage battery for exchanging branch road power supply and exchanging branch road that the grid of controlling above-mentioned 10 insulated gate bipolar transistors can make the utility model inverter be operated in photovoltaic cell.
Consider as the control of current transformer provides voltage, current parameters accurately, in another embodiment of the utility model, also comprise 4 voltage detecting circuits and 5 current detection circuit CT1 ~ 5; Wherein, the first voltage detecting circuit is for detection of energy-storage battery voltage; Second voltage testing circuit is for detection of photovoltaic cell voltage; Tertiary voltage testing circuit is for detection of the voltage at bus capacitor two ends; The 4th voltage detecting circuit is for detection of the voltage of three-phase alternating current binding post.
The first current detection circuit CT1 is for detection of the electric current in the first direct current branch; The second current detection circuit CT2 is for detection of the electric current in the second direct current branch; The 3rd current detection circuit CT3, the 4th current detection circuit CT4 and the 5th current detection circuit CT5 are respectively used to detect the electric current that exchanges three-phase branch road in branch road.
In other embodiments, also comprise switch Q3; Three outputs of described alternating current filter are by switch Q3 connection corresponding to three-phase alternating current binding post.Described K switch M1, K switch M2 and K switch M3 are contactor; Described switch Q1, switch Q2 and switch Q3 are the circuit breaker shielding.
In order to prevent lightning surge, exchange in branch road and also comprise lightning protection device, lightning protection device can be connected on the branch road between switch Q3 and three-phase alternating current binding post.
For the course of work of the high-power light storage of clearer explanation integrated converter, below in conjunction with accompanying drawing, its course of work is described in detail.
Two DC side of high-power light storage integrated converter connect respectively lithium battery/lead-acid battery and solar-energy photo-voltaic cell.Before direct current branch work, can be respectively by controlling precharge contactor KM1, KM2 adhesive, contactor KM3 disconnects, and circuit breaker Q 1, Q2 and Q3 disconnect, and now photovoltaic cell, energy-storage battery charge to bus capacitor through pre-charge resistance R1, R2 respectively.After precharge finishes, the circuit breaker Q of closing 1, Q2, Q3 and contactor KM3, disconnect precharge contactor KM1 and KM2, the direct current of two direct current branch, after breaker closing, boosts or step-down work by direct current branch filter EMC1, EMC2, first, second bi-directional half bridge circuit.By controlling the make-and-break time of IGBT1 ~ 4 four pipe, can make first, second bi-directional half bridge circuit for boosting or step-down mode of operation.
Especially, this is in direct current branch selects to adopt LCL filter network, considers that the lithium battery/lead-acid battery of energy storage is very high to the requirement of current harmonics, in order to extend the useful life of battery, must take measures to make the harmonic current of battery to reduce.Because the internal resistance of battery is very little, the mode of now maximum use LC filtering, the capacitive reactance of this mode filter capacitor is greater than the internal resistance of cell, and the electric capacity of LC filtering cannot filtering harmonic wave.LCL filter network used herein, the L induction reactance of battery side is greater than the internal resistance of battery, and harmonic current greatly reduces after LCL filter network.
Because energy-storage battery branch energy needs two-way flow, adopt bi-directional half bridge circuit herein, energy capable of bidirectional flowing, and can be used as booster circuit, also can be used as reduction voltage circuit work.The energy of photovoltaic branch road can only be by photovoltaic cell to bus capacitor, and also adopting bi-directional half bridge circuit is herein in order to make two direct current branch symmetrical configuration, is easy to produce.Based on photovoltaic cell direct current branch its can only one-way flow characteristic, in control, ensure that electric current can only flow from photovoltaic cell to bus capacitor.
Voltage on bus capacitor C3 is transported to three-phase alternating current boundary terminal U, V, W through ac converter unit, ac filter and lightning protection device, thinks mains supply.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (9)
1. a high-power light storage integrated converter, is characterized in that, comprises photovoltaic cell direct current branch, energy-storage battery direct current branch, bus capacitor and exchanges branch road;
In described energy-storage battery direct current branch, the output of energy-storage battery is connected with the input of the first direct current branch filter by switch Q1, the positive pole of the first direct current branch filter output is connected with the first input end of a LCL filter network, and the negative pole of the first direct current branch filter output is connected with the second input of a LCL filter network; The first output of the one LCL filter network is connected with the first input end of the first bi-directional half bridge circuit, and the second output of a LCL filter network is connected with the second input of the first bi-directional half bridge circuit; The first output of the first bi-directional half bridge circuit is connected with the first terminal of bus capacitor, and the second output of the first bi-directional half bridge circuit is connected with the second terminal of bus capacitor; The output of energy-storage battery is also connected with two inputs of a described LCL filter network by K switch M1, pre-charge resistance R1;
In described photovoltaic cell direct current branch, the output of photovoltaic cell is connected with the input of the second direct current branch filter by switch Q2, the positive pole of the second direct current branch filter output is connected with the first input end of the 2nd LCL filter network, and the negative pole of the second direct current branch filter output is connected with the second input of the 2nd LCL filter network; The first output of the 2nd LCL filter network is connected with the first input end of the second bi-directional half bridge circuit, and the second output of the 2nd LCL filter network is connected with the second input of the second bi-directional half bridge circuit; The first output of the second bi-directional half bridge circuit is connected with the first terminal of bus capacitor, and the second output of the second bi-directional half bridge circuit is connected with the second terminal of bus capacitor; The output of photovoltaic cell is also connected with two inputs of described the 2nd LCL filter network by K switch M2, pre-charge resistance R2;
In interchange branch road, the first input end of three-phase inversion unit is connected with the first terminal of described DC bus, and the second input of three-phase inversion unit is connected with the second terminal of described DC bus; Three lead-out terminals of three-phase inversion unit and the corresponding connection of three inputs of three-phase LCL filter network; Three outputs of three-phase LCL filter network are the corresponding connection of three inputs with alternating current filter by K switch M3, three outputs connection corresponding to three-phase alternating current binding post of described alternating current filter.
2. the high-power light storage of one according to claim 1 integrated converter, is characterized in that, the second input of the second input of a described LCL filter network and the 2nd LCL filter network links together; On the branch road being connected with the second input of a LCL filter network at the first DC filter, the second DC filter, K switch M1, K switch M2, also comprise anti-reverse diode.
3. the high-power light storage of one according to claim 1 integrated converter, it is characterized in that, described bi-directional half bridge circuit comprises two insulated gate bipolar transistors of serial connection up and down, the emitter that is positioned at the insulated gate bipolar transistor of top is connected with the collector electrode of the insulated gate bipolar transistor that is positioned at below, the public connecting end of described two insulated gate bipolar transistors is the first input end of bi-directional half bridge circuit, be positioned at very the second input and second output of bi-directional half bridge circuit of transmitting of the insulated gate bipolar transistor of below, be positioned at very first output of bi-directional half bridge circuit of current collection of the insulated gate bipolar transistor of top.
4. the high-power light storage of one according to claim 1 integrated converter, is characterized in that, also comprises 4 voltage detecting circuits and 5 current detection circuits; Wherein,
The first voltage detecting circuit is for detection of energy-storage battery voltage; Second voltage testing circuit is for detection of photovoltaic cell voltage; Tertiary voltage testing circuit is for detection of the voltage at bus capacitor two ends; The 4th voltage detecting circuit is for detection of the voltage of three-phase alternating current binding post;
The first current detection circuit is for detection of the electric current in the first direct current branch; The second current detection circuit is for detection of the electric current in the second direct current branch; The 3rd current detection circuit, the 4th current detection circuit and the 5th current detection circuit are respectively used to detect three-phase current in interchange branch road.
5. the high-power light storage of one according to claim 1 integrated converter, is characterized in that, exchanges in branch road and also comprises lightning protection device.
6. the high-power light storage of one according to claim 1 integrated converter, is characterized in that, described K switch M1, K switch M2 and K switch M3 are contactor; Described switch Q1 and switch Q2 are circuit breaker.
7. the high-power light storage of one according to claim 6 integrated converter, is characterized in that, also comprises killer switch Q3; Three outputs of described alternating current filter are by described switch Q3 connection corresponding to three-phase alternating current binding post.
8. the high-power light storage of one according to claim 1 integrated converter, is characterized in that, described energy-storage battery is lithium battery or lead-acid battery.
9. the high-power light storage of one according to claim 1 integrated converter, is characterized in that, the induction reactance of the battery side inductance of a LCL filter network is greater than the internal resistance of energy-storage battery; The induction reactance of the battery side inductance of the 2nd LCL filter network is greater than the internal resistance of photovoltaic cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420208376.7U CN203827203U (en) | 2014-04-28 | 2014-04-28 | High-power optical storage integrated converter |
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| CN201420208376.7U CN203827203U (en) | 2014-04-28 | 2014-04-28 | High-power optical storage integrated converter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467509A (en) * | 2014-12-18 | 2015-03-25 | 江苏方程电力科技有限公司 | Two-way energy storage converter |
| CN105958819A (en) * | 2016-05-03 | 2016-09-21 | 北京北变微电网技术有限公司 | Direct-current photovoltaic power generation current transformer |
| CN106712102A (en) * | 2017-03-09 | 2017-05-24 | 四川科陆新能电气有限公司 | Control system and method for reducing light abandoning power limit of photovoltaic power station |
| CN109361239A (en) * | 2018-12-05 | 2019-02-19 | 江苏中导电力有限公司 | Integral control system is filled in light storage |
-
2014
- 2014-04-28 CN CN201420208376.7U patent/CN203827203U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467509A (en) * | 2014-12-18 | 2015-03-25 | 江苏方程电力科技有限公司 | Two-way energy storage converter |
| CN104467509B (en) * | 2014-12-18 | 2016-11-16 | 江苏方程电力科技有限公司 | A kind of bidirectional energy-storage current transformer |
| CN105958819A (en) * | 2016-05-03 | 2016-09-21 | 北京北变微电网技术有限公司 | Direct-current photovoltaic power generation current transformer |
| CN105958819B (en) * | 2016-05-03 | 2019-06-04 | 北京北变微电网技术有限公司 | String type and centralized photovoltaic parallel in system can be met simultaneously |
| CN106712102A (en) * | 2017-03-09 | 2017-05-24 | 四川科陆新能电气有限公司 | Control system and method for reducing light abandoning power limit of photovoltaic power station |
| CN106712102B (en) * | 2017-03-09 | 2020-04-07 | 四川科陆新能电气有限公司 | Control system and method for reducing light abandoning and electricity limiting of photovoltaic power station |
| CN109361239A (en) * | 2018-12-05 | 2019-02-19 | 江苏中导电力有限公司 | Integral control system is filled in light storage |
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