CN201821285U - DSP control photovoltaic grid-connected inverter - Google Patents
DSP control photovoltaic grid-connected inverter Download PDFInfo
- Publication number
- CN201821285U CN201821285U CN2010205386477U CN201020538647U CN201821285U CN 201821285 U CN201821285 U CN 201821285U CN 2010205386477 U CN2010205386477 U CN 2010205386477U CN 201020538647 U CN201020538647 U CN 201020538647U CN 201821285 U CN201821285 U CN 201821285U
- Authority
- CN
- China
- Prior art keywords
- inverter
- dsp
- reactance
- boost
- filter
- 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
Links
- 239000000463 material Substances 0.000 claims abstract description 24
- 230000002093 peripheral effect Effects 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims abstract description 10
- 239000013078 crystal Substances 0.000 claims abstract 9
- 238000001816 cooling Methods 0.000 claims 1
- 230000008439 repair process Effects 0.000 abstract description 3
- 239000013080 microcrystalline material Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 101000588130 Homo sapiens Microsomal triglyceride transfer protein large subunit Proteins 0.000 description 1
- 102100031545 Microsomal triglyceride transfer protein large subunit Human genes 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Inverter Devices (AREA)
Abstract
本实用新型公开了一种DSP控制光伏并网逆变器，包括逆变器壳体，逆变器壳体上安装DSP外围电路板，其上分别安装DSP控制板、BoostDC/AC一体化模块、开关电源变压器和滤波电容；逆变器壳体上安装滤波器、超微晶材料直流输入端滤波电感、DC/AC电抗、超微晶材料直流输出端滤波电感和Boost电抗，滤波器、超微晶材料直流输入端滤波电感、DC/AC电抗、超微晶材料直流输出端滤波电感和Boost电抗分别位于DSP外围电路板的下方；逆变器壳体上安装顶盖。它可解决现有技术存在的问题，既能过传模拟电路来实现，又能实现全数字控制；另外，它的壳体方便开合，便于工作人员定期检修。
The utility model discloses a DSP-controlled photovoltaic grid-connected inverter, which comprises an inverter housing, on which a DSP peripheral circuit board is installed, on which a DSP control board, a BoostDC/AC integrated module, Switching power supply transformer and filter capacitor; filter installed on the inverter shell, ultrafine crystal material DC input filter inductor, DC/AC reactance, ultrafine crystal material DC output filter inductor and Boost reactance, filter, ultrafine Crystal material DC input filter inductor, DC/AC reactance, microcrystalline material DC output filter inductor and Boost reactance are respectively located under the DSP peripheral circuit board; the top cover is installed on the inverter shell. It can solve the problems existing in the prior art, and it can not only realize by transmitting the analog circuit, but also realize the full digital control; in addition, its shell is convenient to open and close, and it is convenient for staff to check and repair regularly.
Description
Technical field
The utility model relates to a kind of DSP control photovoltaic combining inverter.
Background technology
The parallel network power generation inverter is the core devices of solar power generation, and it provides dc voltage by the PV battery component, is reverse into the AC voltage that equates with civil power phase place and Frequency Synchronization, voltage.The core of this equipment is the DC/AC inverter, comprises the MTTP part of the tracking PV battery component maximum power of input in addition, and the anti-isolated island test of output.
Mostly photovoltaic grid-connected inversion power supply in the past is to adopt monolithic control; very big defective is being arranged aspect control precision and the protection, and what use on inversion control is the control of traditional analog circuit, the components and parts that relate to are many; be subjected to Temperature Influence bigger, control is not very convenient.
Anti-isolated island protection is a very crucial part for the photovoltaic grid-connected inversion power supply, is difficult to realize reliable anti-isolated island protection based on monolithic processor controlled photovoltaic grid-connected inversion power supply.
Because the input of photovoltaic grid-connected inversion power supply prime is made up of solar panel array, and the input of cell panel changes along with the variation of season and weather, this just requires its supporting photovoltaic inverter must have good power tracking function, be MPPT: solar panel maximal power tracing technology is difficult to realize real cell panel maximal power tracing based on monolithic processor controlled photovoltaic grid-connected inversion power supply.
Existing based on monolithic processor controlled photovoltaic combining inverter; because the characteristics of single-chip microcomputer itself; can only cross the biography analog circuit and realize, can't realize digital control, especially in the realization of the anti-isolated island protection that the maximal power tracing and the back level of prime input are exported.And the housing of present photovoltaic combining inverter difficulty is opened, and is not easy to Maintenance and Repair.
The utility model content
The purpose of this utility model has provided a kind of DSP control photovoltaic combining inverter, and it can solve the problem that prior art exists, and can cross the biography analog circuit and realize, can realize digital control again; In addition, its housing makes things convenient for folding, is convenient to staff's periodic inspection.
The utility model is achieved through the following technical solutions: DSP controls photovoltaic combining inverter, comprise inverter case, DSP peripheral circuit plate is installed on the inverter case, DSP control board, Boost DC/AC integrated module, switching mode power supply transformer and filter capacitor are installed respectively on the DSP peripheral circuit plate; Filter, ultracrystallite material direct-flow input end filter inductance, DC/AC reactance, ultracrystallite material dc output end filter inductance and Boost reactance are installed on the inverter case, and filter, ultracrystallite material direct-flow input end filter inductance, DC/AC reactance, ultracrystallite material dc output end filter inductance and Boost reactance lay respectively at the below of DSP peripheral circuit plate; The back side of the inverter case several piece fin that be arranged in parallel, the left and right sides of inverter case is respectively equipped with connecting plate; Top cover is installed on the inverter case, the housing that rectangle is set on the inverter case blocks circle, DSP control board, DSP peripheral circuit plate, Boost DC/AC integrated module, switching mode power supply transformer, filter capacitor, filter, ultracrystallite material direct-flow input end filter inductance, DC/AC reactance, ultracrystallite material dc output end filter inductance and Boost reactance all are positioned at housing and block circle, what housing blocked circle each side is provided with guide rail, the edge is rolled in each side being provided with of top cover, folding along on offer gathering sill, gathering sill and guide rail be corresponding matching one by one.
For further realizing the purpose of this utility model realizing by the following technical solutions: be provided with fairlead in the inverter case, mounting spring in the fairlead is installed push rod on the spring, and big slide block is installed in the upper end of push rod, and small slide block is installed in the upper end of big slide block; Offer chute, circular groove and location hole on the top cover, the two ends of chute communicate with circular groove and location hole respectively, the diameter of small slide block is less than the diameter of big slide block, the diameter of circular groove and location hole is greater than the width of chute, the diameter of circular groove and location hole is greater than the diameter of big slide block, and the width of chute is greater than the diameter of small slide block; Big slide block cooperates with circular groove.Stop collar is installed in the inverter case, guide vane end stop is set on the push rod, guide vane end stop cooperates with stop collar.
Good effect of the present utility model is: its control board is core with DSP, the periphery be aided with analog signal conditioner circuit, LCD demonstration, communication and serial real-time clock band ferroelectric memory finish the generation of voltage and current signals sampling, pwm pulse, with the communicating by letter and function such as error protection of host computer.The function of analog signal detection circuit is to be the forceful electric power conversion of signals light current digital signal that DSP can read, and will guarantee the isolation of forceful electric power and light current simultaneously.The pwm signal that the DSP control circuit produces is controlled the opening state of IGBT switching tube then earlier by drive circuit.The essence of MPPT is a kind of from searching process [4], by writing down array output power value corresponding under the different voltages, compares the power output of difference solar cell array then, draws maximum power point.The solar photovoltaic interconnected inverter of each user side phenomenon of independent operating still when island effect is meant and causes the electrical network interruption of power supply owing to reasons such as electric fault, misoperation or natural causes.In general; island effect may cause adverse influence to whole power distribution system equipment and user's equipment, and comprise combining inverter continued power possibility crisis power network line attendant's life security: the normal making process that disturbs electrical network: electrical network can not be controlled voltage and the frequency in the isolated island.May cause the damage of user power utilization equipment.Therefore the isolated island problem that solves photovoltaic parallel in system seems particularly important.This scheme adopts a kind of anti-island detection method of positive feedback frequency disturbance.The main thought of this method is at first to judge current line voltage frequency, periodically output current frequency is imposed corresponding disturbance then.Observe the actual output current frequency simultaneously.Following when output current frequency that disturbing signal changes is output current frequency can be controlled by combining inverter the time, and disturbance quantity just is multiplied.To reach the purpose that output current frequency is changed fast and trigger anti-isolated island frequency detecting.Adopt digital control based on DSP control photovoltaic combining inverter, process structure is simpler, and it is more accurate to control, and anti-isolated island protection is more reliable.DSP control photovoltaic combining inverter described in the utility model has the whole efficiency height, the restriction of photovoltaic cell environment for use is low, the advantage that current harmonics is little, Electro Magnetic Compatibility is good.DSP control photovoltaic combining inverter described in the utility model, its housing makes things convenient for folding, is beneficial to maintenance.DSP described in the utility model control photovoltaic combining inverter also has compactness simple for structure, at the bottom of the manufacturing cost and advantage easy to use.
Description of drawings
Fig. 1 is a structural representation of the present utility model; Fig. 2 be Fig. 1 overlook the structure for amplifying schematic diagram; Fig. 3 is the local structure for amplifying schematic diagram of the I of Fig. 2; Fig. 4 is the photovoltaic grid-connected device circuit block diagram; Fig. 5 is Boost and mixes the circuit diagram that the H bridging changes that wherein utilize the Boost circuit to finish MPPT, the H bridge is finished the DC/AC conversion, and alternating current is injected electrical network; Fig. 6 is Boost translation circuit figure; Fig. 7 is that system adopts self adaptation disturbance observation, utilizes λ * | Δ P| solves near the program flow diagram of the problem that fluctuation is big maximum power point; Fig. 8 is the DC/AC conversion.
Reference numeral: 1DSP control panel 2DSP peripheral circuit plate 3 Boost DC/AC integrated modules 4 switching mode power supply transformers 5 filter capacitors 6 wave filters 7 ultracrystallite material direct-flow input end filter inductances 8 DC/AC reactance 9 ultracrystallite material dc output end filter inductances 10 Boost reactance 11 inverter case 12 top covers 13 chutes 14 circular grooves 15 small slide blocks 16 large slide block 17 push rods 18 springs 19 housings block circle 20 guide rails 21 gathering sills 22 locating holes 23 fin 24 foldings along 25 connecting plates, 26 fairleads, 27 limited blocks, 28 stop collars.
Embodiment
DSP control photovoltaic combining inverter described in the utility model, comprise inverter case 11, DSP peripheral circuit plate 2 is installed on the inverter case 11, DSP control board 1, Boost DC/AC integrated module 3, switching mode power supply transformer 4 and filter capacitor 5 are installed respectively on the DSP peripheral circuit plate 2; Filter 6, ultracrystallite material direct-flow input end filter inductance 7, DC/AC reactance 8, ultracrystallite material dc output end filter inductance 9 and Boost reactance 10 are installed on the inverter case 11, and filter 6, ultracrystallite material direct-flow input end filter inductance 7, DC/AC reactance 8, ultracrystallite material dc output end filter inductance 9 and Boost reactance 10 lay respectively at the below of DSP peripheral circuit plate 2; The back side of the inverter case 11 several piece fin 23 that be arranged in parallel, the left and right sides of inverter case 11 is respectively equipped with connecting plate 25, utilizes connecting plate 25 conveniently inverter case 11 to be installed and fixed; Top cover 12 is installed on the inverter case 11, can be provided with on the top cover 12 and control button and LED display, the housing that rectangle is set on the inverter case 11 blocks circle 19, DSP control board 1, DSP peripheral circuit plate 2, Boost DC/AC integrated module 3, switching mode power supply transformer 4, filter capacitor 5, filter 6, ultracrystallite material direct-flow input end filter inductance 7, DC/AC reactance 8, ultracrystallite material dc output end filter inductance 9 and Boost reactance 10 all are positioned at housing and block circle 19, what housing blocked circle 19 each side is provided with guide rail 20, top cover 12 each side be provided with folding along 24, folding is along offering gathering sill 21 on 24, gathering sill 21 and guide rail 20 be corresponding matching one by one.
When described DSP control photovoltaic combining inverter overhauls, only top cover 12 relative inverter case 11 need be moved up and to open top cover 12.Make things convenient for the staff that the inside components and parts of described DSP control photovoltaic combining inverter are keeped in repair.
Arbitrarily open under the effect of external force for preventing top cover 12, lose protective effect to inner components and parts, as Fig. 1 and shown in Figure 2, be provided with fairlead 26 in the inverter case 11, mounting spring 18 in the fairlead 26,26 pairs of springs 18 of fairlead play the guiding role, and push rod 17 is installed on the spring 18, big slide block 16 is installed in the upper end of push rod 17, and small slide block 15 is installed in the upper end of big slide block 16; Offer chute 13, circular groove 14 and location hole 22 on the top cover 12, the two ends of chute 13 communicate with circular groove 14 and location hole 22 respectively, the diameter of small slide block 15 is less than the diameter of big slide block 16, the diameter of circular groove 14 and location hole 22 is greater than the width of chute 13, the diameter of circular groove 14 and location hole 22 is greater than the diameter of big slide block 16, and the width of chute 13 is greater than the diameter of small slide block 15; Big slide block 16 cooperates with circular groove 14.As shown in Figure 1, top cover 12 and inverter case 11 closures, big slide block 16 snaps in the circular groove 14, and at this moment, big slide block 16 prevents that with circular groove 14 cooperations top cover 12 relative inverter case 11 from moving up, thus locking top cover 12 can't be opened it.In the time of need opening top cover 12, as shown in Figure 2, press small slide block 15, the elastic force that big slide block 16 and push rod 17 overcome spring 18 moves to inverter case 11 directions, make small slide block 15 be positioned at circular groove 14, because the width of chute 13 is greater than the diameter of small slide block 15, top cover 12 can move up, and small slide block 15 moves in chute 13 in the moving process; When big slide block 16 and small slide block 15 move in the location hole 22, unclamp small slide block 15, big slide block 16 and push rod 17 reset under the effect of spring 18, make big slide block 16 be positioned at location hole 22, at this moment, big slide block 16 prevents that with location hole 22 cooperations top cover 12 relative inverter case 11 from moving down, thereby, avoid top cover 12 in maintenance process, to fall, the influence maintenance.
For guaranteeing push rod 17 not inverter case 11 swings relatively as much as possible, further improve locking action to top cover 12, stop collar 28 is installed in the inverter case 11, guide vane end stop 27 is set on the push rod 17, guide vane end stop 27 cooperates with stop collar 28.Stop collar 28 can limit push rod 17 only straight line move, can not swing.Stop collar 28 cooperates with guide vane end stop 27, guarantees that simultaneously big slide block 16 is positioned at circular groove 14 or location hole 22, and can not stretch out outside circular groove 14 and the location hole 22, guarantees the position-limiting action that big slide block 16 cooperates with circular groove 14 or location hole 22.
DSP control photovoltaic combining inverter described in the utility model, comprise Boost booster circuit, inverter circuit and filter circuit, the Boost booster circuit is connected with the inverter circuit circuit, inverter circuit is electrically connected with filter circuit, and described booster circuit comprises with TMS320F2812 being DSP, Boost power MOSFET, the second generation Schottky CSI diode of core; Booster circuit carries out booster circuit conversion control by DSP, and realizes MPPT control by efficient algorithm.Described inverter circuit adopts full-bridge type, constitute by T1, T2, T3, T4 and peripheral circuit thereof, wherein go up brachium pontis T1, T2 and adopt IGBT, following brachium pontis T3, T4 adopt power MOSFET, and under the control of DSP, T1 on the last brachium pontis, T2 high frequency replace break-make, and the T3 of following brachium pontis, T4 are respectively in positive half cycle, the negative half period conducting of electrical network sine wave; Inverter circuit is realized anti-isolated island by the frequency disturbance technology; Coordinate control by the DSP control unit between booster circuit and the inverter circuit; Filter circuit adopts filter and ultracrystallite material inductance mixed filtering mode, guarantees Electro Magnetic Compatibility.
As shown in Figure 4; control system is a core with the TMS320F2812 of TI company, functions such as the generation of the processing of realization sampled signal and A/D conversion, Boost converter and PWM inverter control impuls, the supervision of system running state and control, error protection and storage, RS232,485 communications.Deliver to the TMS320F2812 control board after the voltage and current signal sampling of Boost output voltage, line voltage, grid-connected current and solar cell in the circuit.Control board mainly comprises: CPU and peripheral circuit thereof, input and modulate circuit, drive circuit and protective circuit.Wherein strong and weak electricity isolation, level conversion and functions such as signal amplification and filtering are mainly finished in input and conditioning unit, to satisfy the requirement of DSP control system to each road signal level range and signal quality.Drive circuit plays the driving force of raising pulse and the effect of isolation.When the protection logical circuit then guaranteed to break down, system can directly block output pulse signal from hardware.
Specifically set forth its operation principle: Fig. 5 in conjunction with the accompanying drawings and be mainly Boost and mix the circuit that the H bridging changes, wherein utilize the Boost circuit to finish MPPT, the H bridge is finished the DC/AC conversion, and alternating current is injected electrical network.
Fig. 3 is the main circuit of Boost converter, and electric routing switch pipe T5, second generation Schottky diode D1, inductance L 3, DC-link capacitor C 1 are formed.The use of second generation Schottky SIC diode can reduce the conduction loss of switching tube greatly, reduces electromagnetic interference.
Work principle is that diode D1 is anti-inclined to one side when switch T5 conducting, and solar battery array is to inductance L 3 storage of electrical energy; When switch T5 disconnected, diode current flow was charged to load jointly by inductance L 3 and array, returned capacitor C 1 charging simultaneously, and the voltage at inductance two ends and the stack of input power source voltage make the output generation be higher than the voltage of input.When the Boost converter is operated in electric current continuation mode following time, the voltage relationship of Boost circuit input and output is: VDClink=VI/ (1-D) (1)
It is only relevant with duty ratio D and irrelevant with load to obtain its transformation ratio from formula (1), just can change Dclink voltage by the duty ratio D that changes the Boost converter, thereby the change load current finally changes the power output of photovoltaic cell, finds maximum power point (mpp).
System adopts self adaptation disturbance observation, utilizes λ * | and Δ P| solves near the big problem of fluctuation maximum power point.Its program flow diagram as shown in Figure 7.
ε has determined tracking accuracy among Fig. 7, and λ is the duty ratio step-length, the step-length of decision variable power.When | △ P|＜ε, think that system has reached near the maximum power point; According to formula DK+1=DK+ λ * | Δ P|, the value of λ can change in automatic variation according to the power difference, and near maximum power point, its value is very little, thereby reduces near the big problem of the fluctuation of maximum power point.
Fig. 8 is the schematic diagram of DC/AC part, and the H bridge inverter is dc inverter that sinusoidal ac injects electrical network.The IGBT of last half-bridge is operated in 50HZ as polarity controller, thereby reduces the output electromagnetic interference of total losses and inverter.The MOSFET of following half-bridge carries out the PWM high frequency and switches.
Control section is mainly finished photovoltaic input voltage, photovoltaic output current, Dclink voltage by TMS320F2812, and the collection of data such as line voltage, grid-connected current and AD conversion.And produce Boost circuits needed PWM according to specific algorithm and involve four road PWM ripples in the DC/AC conversion.
The utility model not technology contents of detailed description is known technology.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205386477U CN201821285U (en) | 2010-09-21 | 2010-09-21 | DSP control photovoltaic grid-connected inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205386477U CN201821285U (en) | 2010-09-21 | 2010-09-21 | DSP control photovoltaic grid-connected inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201821285U true CN201821285U (en) | 2011-05-04 |
Family
ID=43919227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205386477U Expired - Fee Related CN201821285U (en) | 2010-09-21 | 2010-09-21 | DSP control photovoltaic grid-connected inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201821285U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710164A (en) * | 2012-05-31 | 2012-10-03 | 上海大学 | Photovoltaic inverter |
| CN102830739A (en) * | 2011-06-16 | 2012-12-19 | 江苏瑞新科技股份有限公司 | Method for achieving 50A-7500A alternating current program control current source |
| CN105141146A (en) * | 2015-10-09 | 2015-12-09 | 常州大学 | An emergency inverter power supply for railway vehicles |
| CN107040148A (en) * | 2017-05-02 | 2017-08-11 | 北京群菱能源科技有限公司 | A kind of photovoltaic DC-to-AC converter |
| CN111245359A (en) * | 2020-01-20 | 2020-06-05 | 上海发电设备成套设计研究院有限责任公司 | Cascaded photovoltaic inverter unit module device and control method |
-
2010
- 2010-09-21 CN CN2010205386477U patent/CN201821285U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830739A (en) * | 2011-06-16 | 2012-12-19 | 江苏瑞新科技股份有限公司 | Method for achieving 50A-7500A alternating current program control current source |
| CN102830739B (en) * | 2011-06-16 | 2014-07-02 | 江苏瑞新科技股份有限公司 | Method for achieving 50A-7500A alternating current program control current source |
| CN102710164A (en) * | 2012-05-31 | 2012-10-03 | 上海大学 | Photovoltaic inverter |
| CN105141146A (en) * | 2015-10-09 | 2015-12-09 | 常州大学 | An emergency inverter power supply for railway vehicles |
| CN107040148A (en) * | 2017-05-02 | 2017-08-11 | 北京群菱能源科技有限公司 | A kind of photovoltaic DC-to-AC converter |
| CN111245359A (en) * | 2020-01-20 | 2020-06-05 | 上海发电设备成套设计研究院有限责任公司 | Cascaded photovoltaic inverter unit module device and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102237691B (en) | Wind energy and solar energy grid-connected generation system and control method thereof | |
| CN106253330B (en) | Photovoltaic power optimization system | |
| CN101083399A (en) | Z source power transformation based photovoltaic network inverter | |
| CN101950983A (en) | Two-stage photovoltaic grid-connected control system based on combination of pole allocation and repetitive control | |
| CN103138291A (en) | Wind power generation intelligent single-phase grid-connection controller | |
| CN101867291A (en) | Household solar photovoltaic inverter | |
| CN201821285U (en) | DSP control photovoltaic grid-connected inverter | |
| CN103944252B (en) | Domestic photovoltaic control system | |
| CN109412443A (en) | The quasi- source the Z string type photovoltaic grid-connected inverting system of three-phase voltage type | |
| CN106329565B (en) | Data communication method of photovoltaic power optimization system | |
| CN102156267A (en) | Experimental device for high-power photovoltaic grid-connected inverter | |
| CN101847876A (en) | Three-phase photovoltaic grid connected inverter system | |
| CN202444277U (en) | Three-phase photovoltaic grid-connected power generation device applicable to distributed power generation | |
| CN201813171U (en) | A two-stage photovoltaic grid-connected control device based on the combination of pole configuration and repetitive control | |
| CN102709943A (en) | Single-stage photovoltaic grid-connected power generation control method with harmonic wave treatment and reactive compensation | |
| CN102931678B (en) | Double-staggered flyback photovoltaic grid-connected micro inverter and control method thereof | |
| CN105429462B (en) | The control system of the multi-functional grid-connection converter of a kind of twin-stage and method thereof | |
| CN202333835U (en) | High-frequency photovoltaic grid-connected power generation system | |
| CN201682294U (en) | Three-phase photovoltaic grid-connected inverter based on Z sources | |
| CN203660918U (en) | Single-phase photovoltaic grid connected inverter | |
| CN202798011U (en) | Home energy system | |
| CN206135430U (en) | Miniature photovoltaic grid -connected inverter | |
| CN202737480U (en) | Photovoltaic grid-connected inverter with high frequency link | |
| CN203691279U (en) | Topologically structured circuit of mini photovoltaic inverter | |
| CN203352430U (en) | Device for suppressing power frequency ripple current |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG BOS ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHANDONG BOS POWER CO., LTD. Effective date: 20140516 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Geng Chuanyong Inventor before: Geng Chuanyong Inventor before: Yu Lianguang Inventor before: Yue Jiancai |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 250100 JINAN, SHANDONG PROVINCE TO: 250200 JINAN, SHANDONG PROVINCE Free format text: CORRECT: INVENTOR; FROM: GENG CHUANYONG YU LIANGUANG YUE JIANCAI TO: GENG CHUANYONG |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140516 Address after: No. 1617 Ji'nan Zhangqiu City Economic Development Zone Mingshui 250200 Century Avenue in Shandong Province Patentee after: SHANDONG BOS ENERGY TECHNOLOGY CO., LTD. Address before: 250100 No. 147-2 industrial North Road, Licheng District, Shandong, Ji'nan Patentee before: Shandong BOS Energy Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20150921 |
|
| EXPY | Termination of patent right or utility model |