CN112769162A - Photovoltaic power grid parallel inverter control method - Google Patents
Photovoltaic power grid parallel inverter control method Download PDFInfo
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- CN112769162A CN112769162A CN202110205278.2A CN202110205278A CN112769162A CN 112769162 A CN112769162 A CN 112769162A CN 202110205278 A CN202110205278 A CN 202110205278A CN 112769162 A CN112769162 A CN 112769162A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 37
- 238000001914 filtration Methods 0.000 claims description 15
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000010248 power generation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 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
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- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
- H02J2300/26—The renewable source being solar energy of photovoltaic origin involving maximum power point tracking control for photovoltaic sources
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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
Abstract
The invention discloses a control method of a parallel inverter of a photovoltaic power grid, wherein the parallel inverter of the photovoltaic power grid comprises the following steps: the DSP processing module is used for transmitting the information in the information acquisition module and processing the information; the MCU control module is used for realizing the operation of the personnel on the equipment after control and feeding back information; the MPPT detection module is used for detecting the generation voltage of the solar panel in real time and tracking the highest voltage and current value, so that the system charges the storage battery by the maximum power output. According to the invention, the MCU control module, the DSP processing module and the display control module are combined, so that the processing and checking of the flow is realized, the user can operate more intuitively and the difficulty of hands is reduced, and the MPPT detection module can ensure that the internal condition can be detected in real time and information transmission is carried out, so that the operation of equipment is ensured.
Description
Technical Field
The invention belongs to the field of inverter control, and particularly relates to a control method of a parallel inverter of a photovoltaic power grid.
Background
Photovoltaic: the photovoltaic power generation system is a novel power generation system which directly converts solar radiation energy into electric energy by utilizing the photovoltaic effect of a solar cell semiconductor material, has two modes of independent operation and grid-connected operation, and needs to use a reverse electric appliance to process the photovoltaic power generation system in the process of photovoltaic processing.
However, the above-mentioned inverse electric device cannot be visually operated when being controlled, so that a user cannot know that the internal information thereof is not easy to effectively control and adjust the inverse electric device, and cannot control and adjust the inverse electric device, so that the adaptability is too low, and the operation is difficult and the applicability is degraded.
Disclosure of Invention
The invention aims to provide a photovoltaic power grid parallel inverter control method to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a photovoltaic power grid parallel inverter control method includes:
the DSP processing module is used for transmitting the information in the information acquisition module and processing the information;
the MCU control module is used for realizing the operation of the personnel on the equipment after control and feeding back information;
the MPPT detection module is used for detecting the generation voltage of the solar panel in real time and tracking the highest voltage and current value so that the system charges the storage battery by the maximum power output;
the electric energy conversion module is particularly DC/AC conversion equipment and is used for converting direct current processed by the MPPT module and the storage battery into alternating current required by a load and grid connection;
the solar receiving module is used for receiving external natural light energy, converting the external natural light energy into electric energy and transmitting the electric energy to the modules;
the method comprises the following steps:
s1: firstly, a solar receiving module is used for rotating external energy and transmitting the external energy to a plurality of modules respectively;
s2: then the solar receiving module is respectively transmitted to the storage battery and the filtering module, then the filtering module is transmitted to the electric energy conversion module and the MPPT detection module through the insurance module, and is connected to the information acquisition module through the MPPT detection module to transmit data to the DSP processing module;
s3: the data of the display control module is controlled by the DSP processing module, and the multi-electric energy conversion module is controlled by the MCU control module connected with the DSP processing module;
s4: the information acquisition module is connected with the electric energy conversion module and the MPPT detection module, so that the detection of the alignment module is realized, and the transmission display is carried out;
s5: and finally, the display control module is used for controlling according to needs, the MCU control module is used for regulating the electric energy conversion module so as to form grid connection and grid disconnection, and finally, the electric energy conversion module and the MCU control module are used for outputting outwards.
Preferably, the solar receiving module receives the electric energy and then transmits the electric energy to the storage battery and the filtering module respectively, and the filtering module can enable specific frequency components in the signal to pass through and attenuate other frequency components.
Preferably, the storage battery can store the collected electric energy for standby, the filtering module is electrically connected with the MPPT detecting module and the electric energy conversion module through the insurance module respectively, and the MPPT detecting module is connected to the information acquisition module.
Preferably, the information acquisition module is transmitted to the DSP processing module, and then the information is processed by the DSP processing module and is respectively transmitted to the display control module and the MCU control module.
Preferably, the display control module can display the internal electric energy in a datamation mode and externally, and adjust and control the internal electric energy according to the requirements of personnel to realize different requirement operations, and the information acquisition module can acquire and transmit the received electric energy.
Preferably, the safety module is a function of protecting the whole, so that no accident occurs when the electric energy is transmitted, and the safety of the following module can be protected.
Preferably, the MPPT detection module and the electric energy conversion module are both connected with an MCU control module, and the MCU control module can adjust and control the electric energy conversion module.
Preferably, the electric energy conversion module can respectively output grid connection and grid disconnection according to the control requirement of the MCU control module, the grid connection and the grid disconnection are both finally output externally through the electric energy output module, and the electric energy output module can process and output externally the grid connection and the grid disconnection, so that different requirements of users are met.
The invention has the technical effects and advantages that:
be arranged in transmitting the information in the information acquisition module and carry out processing operation and MCU control module to it and be used for realizing the operation of personnel to equipment control back and feedback information through DSP processing module, and combine with the display control module, thereby realize the processing to its flow and look over, thereby make the user can more audio-visual operate and the difficulty of going up one's hands reduces, detect the module through MPPT, thereby can ensure that can real-timely detect the internal conditions and carry out information transmission, guarantee the operation of equipment, still control the regulation through MCU control module to electric energy conversion module, thereby can realize carrying out required form output to electric energy output module to its rotation, realize at last using with external equipment's connection.
Drawings
Fig. 1 is a working flow chart of a control method of a parallel inverter of a photovoltaic power grid.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
A photovoltaic power grid parallel inverter control method includes:
the DSP processing module is used for transmitting the information in the information acquisition module and processing the information;
the MCU control module is used for realizing the operation of the personnel on the equipment after control and feeding back information;
the MPPT detection module is used for detecting the generation voltage of the solar panel in real time and tracking the highest voltage and current value so that the system charges the storage battery by the maximum power output;
the electric energy conversion module is particularly DC/AC conversion equipment and is used for converting direct current processed by the MPPT module and the storage battery into alternating current required by a load and grid connection;
the solar receiving module is used for receiving external natural light energy, converting the external natural light energy into electric energy and transmitting the electric energy to the modules;
the method comprises the following steps:
s1: firstly, a solar receiving module is used for rotating external energy and transmitting the external energy to a plurality of modules respectively;
s2: then the solar receiving module is respectively transmitted to the storage battery and the filtering module, then the filtering module is transmitted to the electric energy conversion module and the MPPT detection module through the insurance module, and is connected to the information acquisition module through the MPPT detection module to transmit data to the DSP processing module;
s3: the data of the display control module is controlled by the DSP processing module, and the multi-electric energy conversion module is controlled by the MCU control module connected with the DSP processing module;
s4: the information acquisition module is connected with the electric energy conversion module and the MPPT detection module, so that the detection of the alignment module is realized, and the transmission display is carried out;
s5: and finally, the display control module is used for controlling according to needs, the MCU control module is used for regulating the electric energy conversion module so as to form grid connection and grid disconnection, and finally, the electric energy conversion module and the MCU control module are used for outputting outwards.
The solar receiving module receives electric energy and then respectively transmits the electric energy to the storage battery and the filtering module, and the filtering module can enable specific frequency components in signals to pass through and attenuate other frequency components.
The battery can carry out and store the electric energy of collecting and carry out the reserve, the filtering module has MPPT to listen module and electric energy conversion module through insurance module electric connection respectively, MPPT listens the module and is connected to the information acquisition module. Through the MPPT module of listening to can ensure that can real-time detect the internal conditions and carry out information transmission, guarantee the operation of equipment.
The information acquisition module is transmitted to the DSP processing module, and then the information acquisition module processes the information and transmits the processed information to the display control module and the MCU control module respectively. The DSP processing module is used for transmitting information in the information acquisition module and carrying out processing operation on the information, the MCU control module is used for realizing and feeding back information operation on the operation of personnel after equipment control, and the MCU control module is combined with the display control module, so that the processing and checking of the flow are realized, and a user can operate more intuitively and the difficulty of hands is reduced.
The display control module can display the internal electric energy in a datamation mode and display the internal electric energy externally, and can adjust and control the internal electric energy according to the requirements of personnel to realize different demand operations, and the information acquisition module can acquire and transmit the received electric energy.
The safety module has the function of protecting the whole body, so that accidents can not happen when electric energy is transmitted, and the safety of the rear module can be protected.
MPPT detects module and electric energy conversion module and all is connected with MCU control module, MCU control module can carry out regulation control to electric energy conversion module. The electric energy conversion module is controlled and adjusted through the MCU control module, so that the electric energy conversion module can be rotated to output required forms to the electric energy output module, and finally, the electric energy conversion module is connected with external equipment for use.
The electric energy conversion module can output grid connection and grid disconnection respectively according to the control requirement of the MCU control module, the grid connection and the grid disconnection are finally output externally through the electric energy output module, and the electric energy output module can process the grid connection and the grid disconnection and output externally, so that different requirements of users are met.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. A photovoltaic grid parallel inverter control method, wherein the photovoltaic grid parallel inverter comprises:
the DSP processing module is used for transmitting the information in the information acquisition module and processing the information;
the MCU control module is used for realizing the operation of the personnel on the equipment after control and feeding back information;
the MPPT detection module is used for detecting the generation voltage of the solar panel in real time and tracking the highest voltage and current value so that the system charges the storage battery by the maximum power output;
the electric energy conversion module is particularly DC/AC conversion equipment and is used for converting direct current processed by the MPPT module and the storage battery into alternating current required by a load and grid connection;
the solar receiving module is used for receiving external natural light energy, converting the external natural light energy into electric energy and transmitting the electric energy to the modules;
the method is characterized by comprising the following steps:
s1: firstly, a solar receiving module is used for rotating external energy and transmitting the external energy to a plurality of modules respectively;
s2: then the solar receiving module is respectively transmitted to the storage battery and the filtering module, then the filtering module is transmitted to the electric energy conversion module and the MPPT detection module through the insurance module, and is connected to the information acquisition module through the MPPT detection module to transmit data to the DSP processing module;
s3: the data of the display control module is controlled by the DSP processing module, and the multi-electric energy conversion module is controlled by the MCU control module connected with the DSP processing module;
s4: the information acquisition module is connected with the electric energy conversion module and the MPPT detection module, so that the detection of the alignment module is realized, and the transmission display is carried out;
s5: and finally, the display control module is used for controlling according to needs, the MCU control module is used for regulating the electric energy conversion module so as to form grid connection and grid disconnection, and finally, the electric energy conversion module and the MCU control module are used for outputting outwards.
2. The photovoltaic power grid parallel inverter control method according to claim 1, characterized in that; the solar receiving module receives electric energy and then respectively transmits the electric energy to the storage battery and the filtering module, and the filtering module can enable specific frequency components in signals to pass through and attenuate other frequency components.
3. The photovoltaic power grid parallel inverter control method according to claim 2, characterized in that; the battery can carry out and store the electric energy of collecting and carry out the reserve, the filtering module has MPPT to listen module and electric energy conversion module through insurance module electric connection respectively, MPPT listens the module and is connected to the information acquisition module.
4. The photovoltaic power grid parallel inverter control method according to claim 3, characterized in that; the information acquisition module is transmitted to the DSP processing module, and then the information acquisition module processes the information and transmits the processed information to the display control module and the MCU control module respectively.
5. The photovoltaic power grid parallel inverter control method according to claim 4, characterized in that; the display control module can display the internal electric energy in a datamation mode and display the internal electric energy externally, and can adjust and control the internal electric energy according to the requirements of personnel to realize different demand operations, and the information acquisition module can acquire and transmit the received electric energy.
6. The photovoltaic power grid parallel inverter control method according to claim 1, characterized in that; the safety module has the function of protecting the whole body, so that accidents can not happen when electric energy is transmitted, and the safety of the rear module can be protected.
7. The photovoltaic power grid parallel inverter control method according to claim 6, wherein; MPPT detects module and electric energy conversion module and all is connected with MCU control module, MCU control module can carry out regulation control to electric energy conversion module.
8. The photovoltaic power grid parallel inverter control method according to claim 7, wherein; the electric energy conversion module can output grid connection and grid disconnection respectively according to the control requirement of the MCU control module, the grid connection and the grid disconnection are finally output externally through the electric energy output module, and the electric energy output module can process the grid connection and the grid disconnection and output externally, so that different requirements of users are met.
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| CN202110205278.2A CN112769162A (en) | 2021-02-24 | 2021-02-24 | Photovoltaic power grid parallel inverter control method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101227090A (en) * | 2007-12-03 | 2008-07-23 | 天津理工大学 | Photovoltaic power generation tracking controller based on digital signal processor |
| CN202159982U (en) * | 2011-07-29 | 2012-03-07 | 宁波大学 | Solar photovoltaic grid-connected inverter based on digital signal processor (DSP) |
| CN209001859U (en) * | 2018-11-16 | 2019-06-18 | 云南朔铭电力工程有限公司 | A kind of variable-frequency power sources based on photovoltaic power generation |
| CN110932327A (en) * | 2019-12-16 | 2020-03-27 | 广东欣顿电源科技有限公司 | Intelligent photovoltaic grid-connected and off-grid integrated energy storage inverter and control method thereof |
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- 2021-02-24 CN CN202110205278.2A patent/CN112769162A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101227090A (en) * | 2007-12-03 | 2008-07-23 | 天津理工大学 | Photovoltaic power generation tracking controller based on digital signal processor |
| CN202159982U (en) * | 2011-07-29 | 2012-03-07 | 宁波大学 | Solar photovoltaic grid-connected inverter based on digital signal processor (DSP) |
| CN209001859U (en) * | 2018-11-16 | 2019-06-18 | 云南朔铭电力工程有限公司 | A kind of variable-frequency power sources based on photovoltaic power generation |
| CN110932327A (en) * | 2019-12-16 | 2020-03-27 | 广东欣顿电源科技有限公司 | Intelligent photovoltaic grid-connected and off-grid integrated energy storage inverter and control method thereof |
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Application publication date: 20210507 |