CN112865672A - Photovoltaic micro inverter system - Google Patents

Photovoltaic micro inverter system Download PDF

Info

Publication number
CN112865672A
CN112865672A CN202110015865.5A CN202110015865A CN112865672A CN 112865672 A CN112865672 A CN 112865672A CN 202110015865 A CN202110015865 A CN 202110015865A CN 112865672 A CN112865672 A CN 112865672A
Authority
CN
China
Prior art keywords
circuit
electrically connected
output
input
photovoltaic
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.)
Pending
Application number
CN202110015865.5A
Other languages
Chinese (zh)
Inventor
庄梓丹
屈莉莉
李湘峰
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.)
Foshan University
Original Assignee
Foshan 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 Foshan University filed Critical Foshan University
Priority to CN202110015865.5A priority Critical patent/CN112865672A/en
Publication of CN112865672A publication Critical patent/CN112865672A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
    • H02S10/20—Systems characterised by their energy storage means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/45—Arrangements for moving or orienting solar heat collector modules for rotary movement with two rotation axes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • 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
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking
    • 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
    • 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
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

The invention provides a photovoltaic micro inverter system which comprises a photovoltaic component, an input filter circuit, an interleaved parallel flyback circuit, a full-bridge rectifier circuit, an output filter circuit, a voltage stabilizing circuit, an energy storage battery component and an inverter circuit, wherein the output end of the photovoltaic component is electrically connected with the input end of the input filter circuit, the output end of the input filter circuit is electrically connected with the input end of the interleaved parallel flyback circuit, the output end of the interleaved parallel flyback circuit is electrically connected with the input end of the full-bridge rectifier circuit, the output end of the full-bridge rectifier circuit is electrically connected with the input end of the output filter circuit, the output end of the output filter circuit is electrically connected with the input end of the voltage stabilizing circuit, the output end of the voltage stabilizing circuit is electrically connected with the input end. The invention can realize the storage and grid-connected functions of the electric energy converted by the photovoltaic module and reduce the system cost.

Description

Photovoltaic micro inverter system
Technical Field
The invention relates to the technical field of inverters, in particular to a photovoltaic micro inverter system.
Background
With the rapid development of new energy technology, the inverter technology is mature, the inverter technology is widely applied to the new energy technology, and the core function of the inverter technology is to convert clean energy such as solar energy, wind energy and the like into electric energy.
The existing photovoltaic inverter system generally stores converted electric energy into a storage battery for self use and is connected into a public power grid through a grid-connected control device so as to improve the utilization rate of the electric energy, a booster circuit is required to be arranged when the electric energy is stored into the storage battery and is connected into the public power grid through the grid-connected control device, the cost is high, and the structure of the photovoltaic inverter system needs to be improved.
Disclosure of Invention
Based on this, in order to solve the problem that the existing photovoltaic inverter system needs to be provided with a booster circuit when the electric energy is stored in a storage battery and is accessed to a public power grid through a grid-connected control device, and the cost is high, the invention provides a photovoltaic micro inverter system, and the specific technical scheme is as follows:
a photovoltaic micro inverter system comprises a photovoltaic component, an input filter circuit, an interleaving parallel flyback circuit, a full-bridge rectifier circuit, an output filter circuit, a voltage stabilizing circuit, an energy storage battery component and an inverter circuit, the output end of the photovoltaic component is electrically connected with the input end of the input filter circuit, the output end of the input filter circuit is electrically connected with the input end of the interleaving parallel flyback circuit, the output end of the interleaving parallel flyback circuit is electrically connected with the input end of the full-bridge rectification circuit, the output end of the full-bridge rectification circuit is electrically connected with the input end of the output filter circuit, the output end of the output filter circuit is electrically connected with the input end of the voltage stabilizing circuit, the output end of the voltage stabilizing circuit is electrically connected with the input end of the energy storage battery assembly, and the output end of the energy storage battery assembly is electrically connected with the input end of the inverter circuit.
The photovoltaic module comprises a photovoltaic module, a full-bridge rectification circuit, an output filter circuit, a voltage stabilizing circuit, an inverter circuit and a photovoltaic module, wherein the photovoltaic module is used for outputting low voltage to the photovoltaic module, the interleaved parallel flyback circuit is used for boosting the low voltage output by the photovoltaic module and providing electrical isolation, the full-bridge rectification circuit, the output filter circuit and the voltage stabilizing circuit are used for carrying out rectification and voltage stabilization on the output voltage of the interleaved parallel flyback circuit, and the inverter circuit is used for converting the. Through crisscross parallel flyback circuit, full-bridge rectifier circuit, output filter circuit, voltage stabilizing circuit and inverter circuit, can be with the electric energy storage of photovoltaic module conversion to in the middle of the energy storage battery subassembly.
That is to say, the photovoltaic micro-inverter system can complete the boosting and electrical isolation of the output voltage of the photovoltaic module by using the staggered parallel flyback circuits, so that the storage and grid-connected functions of the electric energy converted by the photovoltaic module are realized, the system cost is reduced, and the problem that the existing photovoltaic inverter system needs to be provided with the boosting circuit when the electric energy is stored in the storage battery and is connected to a public power grid through the grid-connected control device, so that the cost is high is solved.
Furthermore, the inverter circuit comprises a controller and a dc conversion sub-circuit, the controller is electrically connected with the dc conversion sub-circuit and is used for outputting a control pulse signal to the dc conversion sub-circuit, and the dc conversion sub-circuit is electrically connected with the energy storage battery assembly.
Furthermore, the inverter circuit further comprises an auxiliary sub-circuit for providing a direct current working voltage for the controller, an input end of the auxiliary sub-circuit is electrically connected with an output end of the energy storage battery assembly, and an output end of the auxiliary sub-circuit is electrically connected with the controller.
Further, the input filter circuit comprises a first filter capacitor C1, and two ends of the first filter capacitor C1 are respectively and electrically connected with two poles of the photovoltaic module.
Further, the input filter circuit comprises a second filter capacitor C2, and two ends of the second filter capacitor C2 are electrically connected to the dc output end of the full-bridge rectifier circuit, respectively.
Furthermore, the photovoltaic micro-inverter system further comprises a filtering unit, and the input end of the filtering unit is electrically connected with the output end of the direct current conversion sub-circuit.
Further, the filtering unit is an EMI filter.
Further, the control pulse signal is a pulse width modulation signal.
Further, the photovoltaic module is a flexible solar panel.
Further, the energy storage battery assembly is a rechargeable battery.
Drawings
The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.
Fig. 1 is a schematic diagram of an overall structure of a photovoltaic micro-inverter system according to an embodiment of the invention;
fig. 2 is a circuit diagram of an interleaved parallel flyback circuit of a photovoltaic micro-inverter system in an embodiment of the invention;
fig. 3 is a schematic diagram of an overall structure of a photovoltaic micro-inverter system according to an embodiment of the invention.
Description of reference numerals:
1. a base; 2. a servo motor; 3. a rotating shaft; 4. a ball; 5. a hydraulic telescopic rod; 6. a support plate; 7. a connecting rod; 8. a support bar; 9. a photosensitive sensor; 10. and (4) a groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.
As shown in FIG. 1, a photovoltaic micro-inverter system according to an embodiment of the present invention includes a photovoltaic module, an input filter circuit, an interleaved flyback circuit, a full-bridge rectifier circuit, an output filter circuit, a voltage regulator circuit, an energy storage battery module, and an inverter circuit, the output end of the photovoltaic component is electrically connected with the input end of the input filter circuit, the output end of the input filter circuit is electrically connected with the input end of the interleaving parallel flyback circuit, the output end of the interleaving parallel flyback circuit is electrically connected with the input end of the full-bridge rectification circuit, the output end of the full-bridge rectification circuit is electrically connected with the input end of the output filter circuit, the output end of the output filter circuit is electrically connected with the input end of the voltage stabilizing circuit, the output end of the voltage stabilizing circuit is electrically connected with the input end of the energy storage battery assembly, and the output end of the energy storage battery assembly is electrically connected with the input end of the inverter circuit.
The photovoltaic grid-connected inverter comprises an energy storage battery assembly, a photovoltaic assembly, a full-bridge rectification circuit, an output filter circuit, a voltage stabilizing circuit, an inverter circuit and a power supply circuit, wherein the energy storage battery assembly is used for outputting low voltage to the photovoltaic assembly, the power supply circuit is used for outputting the low voltage to the photovoltaic assembly, the inverter circuit is used for outputting the low voltage to the photovoltaic assembly, the full-bridge rectification circuit, the output filter circuit and the voltage stabilizing circuit are used for performing rectification and voltage stabilization processing on the output voltage of the. Through crisscross parallel flyback circuit, full-bridge rectifier circuit, output filter circuit, voltage stabilizing circuit and inverter circuit, can be with the electric energy storage of photovoltaic module conversion to in the middle of the energy storage battery subassembly.
That is to say, the photovoltaic micro-inverter system can complete the boosting and electrical isolation of the output voltage of the photovoltaic module by using the staggered parallel flyback circuits, so that the storage and grid-connected functions of the electric energy converted by the photovoltaic module are realized, the system cost is reduced, and the problem that the existing photovoltaic inverter system needs to be provided with the boosting circuit when the electric energy is stored in the storage battery and is connected to a public power grid through the grid-connected control device, so that the cost is high is solved.
The photovoltaic module, the input filter circuit, the interleaved parallel flyback circuit, the full-bridge rectifier circuit, the output filter circuit, the voltage stabilizing circuit, the energy storage battery module and the inverter circuit are conventional technical means in the field, and therefore, the details are not repeated herein.
In one embodiment, the inverter circuit includes a controller and a dc conversion sub-circuit, the controller is electrically connected to the dc conversion sub-circuit and configured to output a control pulse signal to the dc conversion sub-circuit, the dc conversion sub-circuit is electrically connected to the energy storage battery assembly, and the dc conversion sub-circuit is configured to turn on and off according to the output control signal pulse to convert a dc voltage into an ac voltage.
In one embodiment, the inverter circuit further includes an auxiliary sub-circuit for providing a dc operating voltage to the controller, an input terminal of the auxiliary sub-circuit is electrically connected to an output terminal of the energy storage battery assembly, and an output terminal of the auxiliary sub-circuit is electrically connected to the controller.
In one embodiment, as shown in fig. 2, the input filter circuit includes a first filter capacitor C1, and two ends of the first filter capacitor C1 are electrically connected to two poles of the photovoltaic module, respectively. Through the first filter capacitor C1, a reliable and stable direct-current voltage can be provided for the interleaved flyback converter.
In one embodiment, as shown in fig. 2, the input filter circuit includes a second filter capacitor C2, and two ends of the second filter capacitor C2 are electrically connected to the output ends of the full-bridge rectifier circuit D3, respectively. Through the second filter capacitor, the voltage stabilizing circuit can conveniently perform voltage stabilizing processing on the output voltage of the full-bridge rectifying circuit D3.
In one embodiment, the photovoltaic micro-inverter system further includes a filtering unit, an input end of the filtering unit is electrically connected to an output end of the dc conversion sub-circuit, and the filtering unit is an EMI (electromagnetic interference) filter. Through the EMI filter, the anti-interference capability of the photovoltaic micro inverter system can be enhanced, and grid-connected current harmonic distortion is reduced.
In one embodiment, the control pulse signal is a pulse width modulation signal.
In one embodiment, the photovoltaic module is a flexible solar panel, and the energy storage battery module is a rechargeable battery.
In one embodiment, the interleaved flyback circuit includes a fet Q1, a fet Q2, an inductor L1, an inductor L2, an inductor L3, an inductor L4, a diode D1, and a diode D2, wherein a drain of the fet Q1 is electrically connected to a different-name terminal of the inductor L1, a same-name terminal of the inductor L1 is electrically connected to one end of the first filter capacitor C1, a source of the fet Q1 is grounded, a drain of the fet Q2 is electrically connected to a different-name terminal of the inductor L3, a same-name terminal of the inductor L3 is electrically connected to one end of the first filter capacitor C1, the other end of the first filter capacitor C1 is grounded to a source of the fet Q2, a different-name terminal of the inductor L2 is electrically connected to an anode of the diode D1, a cathode of the diode D1 is electrically connected to a cathode of the diode D2, and an anode of the diode D2 is electrically connected to a different-name terminal of the inductor L4, the dotted terminal of the inductor L4 and the dotted terminal of the inductor L2 are electrically connected to one input terminal of the full-bridge rectifier circuit, the other input terminal of the full-bridge rectifier circuit is electrically connected to the cathode of the diode, and the gate of the fet Q1 and the gate of the fet Q2 are electrically connected to the pulse-modulated control signal.
The interleaving flyback converter is used as a single-stage topology, and can boost the low voltage output by the photovoltaic component and provide electrical isolation. Compared with the traditional forward circuit, the output end of the interleaving parallel flyback circuit does not need a freewheeling diode and an output inductor, and the interleaving parallel flyback circuit needs fewer electronic elements, so that the cost of the system can be further reduced.
In one embodiment, as shown in fig. 3, the photovoltaic micro-inverter system further includes a base 1, a servo motor 2, a rotating shaft 3, a ball 4, a hydraulic telescopic rod 5, a supporting plate 6, a connecting rod 7 and two supporting rods 8, wherein one end of the supporting plate 6 is fixedly mounted at one end of the base 1, one end of the hydraulic telescopic rod 5 is fixedly mounted at the other end of the base 1, one end of the connecting rod 7 is hinged to the other end of the supporting plate 6, the other end of the hydraulic telescopic rod 5 is hinged to the other end of the connecting rod 7, the two supporting rods 8 are parallel to each other and are respectively fixedly connected to two ends of the connecting rod 7, the servo motor 2 is fixedly mounted on one of the supporting rods 8, the rotating shaft 3 passes through the two supporting rods 8 and is rotatably connected to the two supporting rods 8, the rotating shaft 3 passes through the center of the ball 4 and is fixedly connected to the ball 4, the ball 4 is located two between the bracing piece 8 and is located the top of connecting rod 7, servo motor 2's output shaft with 3 transmission connections of pivot, flexible solar cell panel parcel is in on 4 half of outer circumferential surface of ball and all flexible solar cell panel all is located one side of pivot 3. Through the drive when hydraulic telescoping rod 5 stretches out and draws back with the slope contained angle of adjustment pivot 3 and ball 4 and ground, utilize servo motor 2 drive ball 4 rotates, can make flexible solar cell panel is just to sunshine.
Through setting up base 1, servo motor 2, pivot 3, ball 4, hydraulic telescoping rod 5, backup pad 6, connecting rod 7 and two spinal branch vaulting poles 8 can improve flexible solar cell panel's light energy conversion rate improves photovoltaic micro-inverter system's work efficiency.
In one embodiment, as shown in fig. 3, the photovoltaic micro-inverter system further includes a photosensitive sensor 9, a groove 10 is formed in the surface of the sphere 4 and located in the center of the flexible solar panel, and the photosensitive sensor 9 is fixedly installed at the bottom of the groove 10 and electrically connected to the controller. Since the photosensitive sensor 9 is installed at the bottom of the groove 10, the electric signal fed back by the photosensitive sensor 9 reaches the maximum value only when the flexible solar panel is facing to the sunlight. That is, the controller can determine whether the flexible solar cell panel is facing to the sunlight by analyzing the electric signal fed back by the photosensor 9.
That is, the photosensitive sensor 9 is installed in the groove 10, so that the position of the ball 4 can be conveniently and automatically adjusted according to the electric signal fed back by the photosensitive sensor 9, the flexible solar cell panel is opposite to sunlight, and the intelligent degree and the light energy conversion efficiency of the photovoltaic micro-inverter system are improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A photovoltaic micro inverter system is characterized by comprising a photovoltaic component, an input filter circuit, an interleaving parallel flyback circuit, a full-bridge rectification circuit, an output filter circuit, a voltage stabilizing circuit, an energy storage battery component and an inverter circuit, the output end of the photovoltaic component is electrically connected with the input end of the input filter circuit, the output end of the input filter circuit is electrically connected with the input end of the interleaving parallel flyback circuit, the output end of the interleaving parallel flyback circuit is electrically connected with the input end of the full-bridge rectification circuit, the output end of the full-bridge rectification circuit is electrically connected with the input end of the output filter circuit, the output end of the output filter circuit is electrically connected with the input end of the voltage stabilizing circuit, the output end of the voltage stabilizing circuit is electrically connected with the input end of the energy storage battery assembly, and the output end of the energy storage battery assembly is electrically connected with the input end of the inverter circuit.
2. The pv microinverter system of claim 1, wherein the inverter circuit includes a controller and a dc converter sub-circuit, the controller being electrically connected to the dc converter sub-circuit and configured to output a control pulse signal to the dc converter sub-circuit, the dc converter sub-circuit being electrically connected to the energy storage cell assembly.
3. The pv microinverter system of claim 2, wherein the inverter circuit further includes an auxiliary sub-circuit for providing dc operating voltage to the controller, wherein an input of the auxiliary sub-circuit is electrically connected to an output of the energy storage cell assembly, and an output of the auxiliary sub-circuit is electrically connected to the controller.
4. The pv microinverter system of claim 3, wherein said input filter circuit includes a first filter capacitor C1, wherein two ends of said first filter capacitor C1 are electrically connected to two poles of said pv module, respectively.
5. The photovoltaic micro-inverter system as claimed in claim 4, wherein the input filter circuit comprises a second filter capacitor C2, and two ends of the second filter capacitor C2 are electrically connected to the DC output terminals of the full-bridge rectifier circuit, respectively.
6. The pv microinverter system of claim 5, further comprising a filtering unit, wherein an input of the filtering unit is electrically connected to an output of the dc conversion sub-circuit.
7. The photovoltaic micro-inverter system of claim 6, wherein the filtering unit is an EMI filter.
8. The photovoltaic micro-inverter system of claim 7, wherein the control pulse signal is a pulse width modulated signal.
9. The photovoltaic microinverter system of claim 8, wherein the photovoltaic module is a flexible solar panel.
10. The pv microinverter system of claim 9, wherein the energy storage cell assembly is a rechargeable battery.
CN202110015865.5A 2021-01-07 2021-01-07 Photovoltaic micro inverter system Pending CN112865672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110015865.5A CN112865672A (en) 2021-01-07 2021-01-07 Photovoltaic micro inverter system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110015865.5A CN112865672A (en) 2021-01-07 2021-01-07 Photovoltaic micro inverter system

Publications (1)

Publication Number Publication Date
CN112865672A true CN112865672A (en) 2021-05-28

Family

ID=76004522

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110015865.5A Pending CN112865672A (en) 2021-01-07 2021-01-07 Photovoltaic micro inverter system

Country Status (1)

Country Link
CN (1) CN112865672A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101292593B1 (en) * 2013-06-12 2013-08-16 한경대학교 산학협력단 Interleaving type grid-connected module type photovoltaic power conversion apparatus
CN104167948A (en) * 2014-09-11 2014-11-26 上海理工大学 Variable-frequency soft switching control method of micro photovoltaic grid-connected inverter
CN104796029A (en) * 2015-01-27 2015-07-22 南通睿觅新能源科技有限公司 Micro inverter applied to photovoltaic solar
DE102015222210A1 (en) * 2015-11-11 2017-05-11 Siemens Aktiengesellschaft Method, forecasting device and control device for controlling a power grid with a photovoltaic system
CN109995128A (en) * 2019-04-24 2019-07-09 无锡尚德益家新能源有限公司 Photovoltaic high-frequency isolation charging circuit and high pressure photovoltaic off-grid power supply system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101292593B1 (en) * 2013-06-12 2013-08-16 한경대학교 산학협력단 Interleaving type grid-connected module type photovoltaic power conversion apparatus
CN104167948A (en) * 2014-09-11 2014-11-26 上海理工大学 Variable-frequency soft switching control method of micro photovoltaic grid-connected inverter
CN104796029A (en) * 2015-01-27 2015-07-22 南通睿觅新能源科技有限公司 Micro inverter applied to photovoltaic solar
DE102015222210A1 (en) * 2015-11-11 2017-05-11 Siemens Aktiengesellschaft Method, forecasting device and control device for controlling a power grid with a photovoltaic system
CN109995128A (en) * 2019-04-24 2019-07-09 无锡尚德益家新能源有限公司 Photovoltaic high-frequency isolation charging circuit and high pressure photovoltaic off-grid power supply system

Similar Documents

Publication Publication Date Title
JP4856069B2 (en) Three-phase solar converter circuit and method
CN101304221B (en) Solar photovoltaic interconnected inverter
CN101860270B (en) Access system for adequately utilizing wind energy and solar energy and realization method thereof
US8493753B2 (en) Photovoltaic powered system
CN101237150A (en) Integrated device of efficient light voltage parallel network and mixed active power filter
KR102615960B1 (en) Power converting device and and photovoltaic module including the same
CN101938136A (en) Photovoltaic component DC grid-connection controller
CN201663566U (en) Wind and solar hybrid generation device with high output index
CN106712258A (en) Power supply system for photovoltaic and power grid interactive direct current air conditioner
CN103501020A (en) Hybrid power supply system consisting of mains supply network and photovoltaic assembly and control method thereof
CN203522307U (en) Wind-light-storage battery supplementary electricity generation device based on coupling inductance inverter
CN108899987B (en) Solar charging control circuit with MPPT function
CN102624073B (en) Solar inverter power supply
US20120140533A1 (en) Solar photovoltaic system with capacitance-convertibng function
CN219513804U (en) Photovoltaic inverter and auxiliary power supply device
CN201656848U (en) Access system for fully utilizing wind energy and solar energy
CN112865672A (en) Photovoltaic micro inverter system
CN109698633A (en) A kind of enhancement type bi-directional Z-source inverter
CN105553273A (en) Cascade DC/DC converter suitable for middle-high voltage direct-current grid connection and control method for cascade DC/DC converter
CN204131137U (en) Wind light mutual complementing is from net, grid connected dual mode equipment
US7539029B2 (en) 3-phase solar converter circuit and method
CN103683312A (en) Integrated intelligent photovoltaic power generation component and method for energy conversion of a photovoltaic cell
CN111697682A (en) String type high-power MPPT solar charging controller
CN219499021U (en) High-power three-phase rectification charging module circuit
CN212676941U (en) String type high-power MPPT solar charging controller

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20210528