CN113690962B - MPPT control method, device, equipment and storage medium for different input sources - Google Patents
MPPT control method, device, equipment and storage medium for different input sources Download PDFInfo
- Publication number
- CN113690962B CN113690962B CN202110876377.3A CN202110876377A CN113690962B CN 113690962 B CN113690962 B CN 113690962B CN 202110876377 A CN202110876377 A CN 202110876377A CN 113690962 B CN113690962 B CN 113690962B
- Authority
- CN
- China
- Prior art keywords
- input source
- power
- charging
- input
- voltage
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000007600 charging Methods 0.000 claims abstract description 80
- 238000010280 constant potential charging Methods 0.000 claims abstract description 59
- 238000001514 detection method Methods 0.000 claims description 15
- 238000004590 computer program Methods 0.000 claims description 14
- 230000015654 memory Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
- G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
-
- 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
- H02J1/00—Circuit arrangements for DC mains or DC distribution networks
- H02J1/10—Parallel operation of DC sources
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
-
- 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
-
- 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
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses an MPPT control method, device and equipment for different input sources and a storage medium. The method comprises the following steps: acquiring input power when two set percentages are obtained according to the percentages of the output voltage and the open-circuit voltage of the input source; comparing the two input powers in the set percentage to obtain the type of the input source; according to the type of the input source, the duty ratio of the driving signal is adjusted, and the maximum inputtable power of the current input source is obtained; and carrying out constant voltage charging under the current maximum inputtable power condition according to the maximum inputtable power of the current input source. The method and the device can automatically judge the type of the input source, adjust the charging voltage of the input source according to the type of the input source, and conduct constant voltage charging on the battery, so that the purpose of safe charging is achieved, and the requirement of multiple input sources for battery charging can be met.
Description
Technical Field
The disclosure relates generally to the technical field of charge control, and in particular to an MPPT control method, device, equipment and storage medium for different input sources.
Background
Conventional solar charge and discharge controllers directly connect the solar array to the battery when charged, which requires the solar array to operate in a voltage range typically below Vmp. The traditional solar charge-discharge controller cannot accurately capture the maximum power point, and the MPPT (Maximum Power Point Tracking ) captures the MPPT automatically through an operation method and always operates at the maximum power point, so that energy waste is reduced compared with the traditional solar charge-discharge controller. The MPPT control method is realized according to a selected algorithm, and the MPPT algorithm mainly comprises three types: disturbance observation, conductivity delta, and constant voltage.
In practical applications, there may be the following situations for battery charging: the solar charging and the direct current charging are simultaneously used, and the charging modes adopted by the solar charging and the direct current charging are different, so that the charging control modes are also different, at the moment, the charging mode needs to be judged firstly, then the charging control is carried out according to the different charging modes, and the two modes need to be independently controlled according to the different charging modes due to different technical modes, so that no related technical scheme exists in the prior art.
Therefore, it is desirable to have an MPPT control method for different input sources, which solves the problems existing in the prior art.
Disclosure of Invention
In view of the foregoing drawbacks or shortcomings in the prior art, it is desirable to provide a method, apparatus, device and storage medium for MPPT control of different input sources, which can meet the specific requirements of line layout and wire number calculation of the existing house decoration.
According to an aspect of the embodiment of the present invention, an embodiment of the present application provides an MPPT control method for different input sources, where the method includes:
acquiring input power when two set percentages are obtained according to the percentages of the output voltage and the open-circuit voltage of the input source;
comparing the two input powers in the set percentage to obtain the type of the input source;
according to the type of the input source, the duty ratio of the driving signal is adjusted, and the maximum inputtable power of the current input source is obtained;
and carrying out constant voltage charging under the current maximum inputtable power condition according to the maximum inputtable power of the current input source.
In another embodiment, the obtaining the input power when the two set percentages are based on the percentages of the output voltage and the open circuit voltage of the input source includes:
recording an open circuit voltage of an input source;
according to the open-circuit voltage, increasing the duty ratio of a driving signal of an input source, and pulling down the output voltage of the input source to ninety percent of the open-circuit voltage;
recording the input source power at the moment as first power;
according to the step of reducing the output voltage of the input source to ninety percent of the open-circuit voltage, the duty ratio of the driving signal of the input source is increased, and the output voltage of the input source is reduced to eighty percent of the open-circuit voltage;
the input source power at this time is recorded as the second power.
In another embodiment, the comparing the magnitudes of the input powers at the two set percentages to obtain the type of the input source includes:
if the first power is smaller than the second power, determining that the input source is a photovoltaic power supply;
and if the first power is larger than the second power, determining that the input source is a direct current power supply.
In another embodiment, the adjusting the duty ratio of the driving signal according to the type of the input source, to obtain the maximum inputtable power of the current input source includes:
when the input source is a photovoltaic power supply, the duty ratio of the driving signal is adjusted through left and right disturbance, and the power control direction is searched;
obtaining the maximum inputtable power of the charging power according to the power control direction;
if the input power exceeds the set power limit, reducing the drive signal duty cycle;
if the driving signal duty ratio has reached the maximum duty ratio and the input power is lower than the set value, the input source detection is performed again.
In another embodiment, the adjusting the duty ratio of the driving signal according to the type of the input source, to obtain the maximum inputtable power of the current input source includes:
when the input source is a direct current power supply, the duty ratio of the driving signal is adjusted to ninety percent of the output voltage which is the open-circuit voltage;
obtaining the maximum inputtable power of the charging power;
if the input power exceeds the set power limit, reducing the drive signal duty cycle;
if the input power is less than eighty percent of the maximum inputtable power, input source detection is resumed.
In another embodiment, the constant voltage charging under the current maximum inputtable power condition according to the maximum inputtable power of the current input source includes:
setting a charging voltage of an input source during constant voltage charging;
according to the charging voltage during constant voltage charging of the set input source, after the charging voltage during constant voltage charging is kept at the output voltage of the input source and reaches a set time threshold, constant voltage charging under the current maximum inputtable power condition is carried out;
and adjusting the duty ratio of the driving signal according to the output voltage of the input source, so that the output voltage is kept within the set threshold value of the charging voltage during constant-voltage charging until the battery is charged.
In another embodiment, the adjusting the duty ratio of the driving signal according to the output voltage of the input source, so that the output voltage is kept within the set threshold of the charging voltage during constant voltage charging until the battery is charged, includes:
if the output voltage of the input source exceeds the charging voltage of 100mV at the time of constant voltage charging, the duty ratio of the driving signal is reduced;
if the output voltage of the input source is lower than the charging voltage at the time of constant voltage charging by 100mV, the duty ratio of the driving signal is increased;
if the output voltage of the input source is less than seventy percent of the open circuit voltage, input source detection is resumed.
According to another aspect of the embodiment of the present invention, an MPPT control device for different input sources is disclosed, the device includes:
the power acquisition module is used for acquiring the input power of the two set percentages according to the percentages of the output voltage and the open-circuit voltage of the input source;
the input source judging module is used for comparing the magnitude of the input power when the percentages are set, and acquiring the type of the input source;
and the charging control module is used for adjusting the duty ratio of the driving signal according to the type of the input source, obtaining the maximum inputtable power of the current input source, and carrying out constant voltage charging under the current maximum inputtable power condition according to the maximum inputtable power of the current input source.
In accordance with yet another aspect of an embodiment of the present invention, an electronic device is disclosed that includes one or more processors and memory for storing one or more programs; when the one or more programs are executed by the processor, the processor is caused to implement the MPPT control method for different input sources provided by the embodiments of the present invention.
In accordance with yet another aspect of embodiments of the present invention, a computer-readable storage medium storing a computer program that, when executed, implements the MPPT control methods of different input sources provided by embodiments of the present invention is disclosed.
In the embodiment of the application, the input power of two set percentages is obtained according to the percentages of the output voltage and the open-circuit voltage of the input source; comparing the two input powers in the set percentage to obtain the type of the input source; according to the type of the input source, the duty ratio of the driving signal is adjusted, and the maximum inputtable power of the current input source is obtained; and carrying out constant voltage charging under the current maximum inputtable power condition according to the maximum inputtable power of the current input source. The method and the device can automatically judge the type of the input source, adjust the charging voltage of the input source according to the type of the input source, and conduct constant voltage charging on the battery, so that the purpose of safe charging is achieved, and the requirement of multiple input sources for battery charging can be met.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
FIG. 1 is a power-voltage characteristic of a DC power supply;
FIG. 2 is a power-voltage characteristic of a photovoltaic power supply;
fig. 3 is a flowchart of an MPPT control method for different input sources according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an MPPT control device with different input sources according to an embodiment of the present application;
fig. 5 is an internal structural diagram of an electronic device provided in one embodiment of the present application.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
FIG. 1 is a power-voltage characteristic of a DC power supply; fig. 2 is a graph of power vs. voltage characteristics of a photovoltaic power source, where the maximum power point of the photovoltaic power source is between 70% and 80% of the open circuit voltage, with slight differences according to manufacturers. The maximum power voltage of the DC power supply is the open circuit voltage. The type of the charging power source can be obtained according to the characteristic difference between the two.
Referring to fig. 3, an exemplary flow of an MPPT control method for different input sources to which embodiments of the present application may be applied is shown.
As shown in fig. 3, in step 110, the input power at two set percentages is obtained according to the percentage of the output voltage of the input source and the open circuit voltage.
Specifically, it can be known from the power-voltage characteristic curves of the dc power supply and the photovoltaic power supply that the dc power supply and the photovoltaic power supply are different, and thus, in the embodiment of the present application, the input source is determined as the dc power supply or the photovoltaic power supply by setting different percentage values of the voltage and the open circuit voltage.
Specifically, in one embodiment of the present application, the obtaining the input power when the two set percentages are according to the percentages of the output voltage and the open circuit voltage of the input source includes:
recording an open circuit voltage of an input source;
according to the open-circuit voltage, increasing the duty ratio of a driving signal of an input source, and pulling down the output voltage of the input source to ninety percent of the open-circuit voltage;
recording the input source power at the moment as first power;
according to the step of reducing the output voltage of the input source to ninety percent of the open-circuit voltage, the duty ratio of the driving signal of the input source is increased, and the output voltage of the input source is reduced to eighty percent of the open-circuit voltage;
the input source power at this time is recorded as the second power.
In step 120, the two input powers at the set percentages are compared to obtain the type of input source.
Specifically, in one embodiment of the present application, comparing the magnitudes of the input powers at two set percentages to obtain the type of the input source includes:
if the first power is smaller than the second power, determining that the input source is a photovoltaic power supply;
and if the first power is larger than the second power, determining that the input source is a direct current power supply.
In step 130, the duty ratio of the driving signal is adjusted according to the type of the input source, so as to obtain the maximum inputtable power of the current input source.
Specifically, in one embodiment of the present application, the adjusting the duty ratio of the driving signal according to the type of the input source, to obtain the maximum inputtable power of the current input source includes:
when the input source is a photovoltaic power supply, the duty ratio of the driving signal is adjusted through left and right disturbance, and the power control direction is searched;
obtaining the maximum inputtable power of the charging power according to the power control direction;
if the input power exceeds the set power limit, reducing the drive signal duty cycle;
if the driving signal duty ratio has reached the maximum duty ratio and the input power is lower than the set value, the input source detection is performed again. In the embodiment of the present application, the set value of the input power lower than the set value is 10W.
Specifically, in one embodiment of the present application, the adjusting the duty ratio of the driving signal according to the type of the input source, to obtain the maximum inputtable power of the current input source includes:
when the input source is a direct current power supply, the duty ratio of the driving signal is adjusted to ninety percent of the output voltage which is the open-circuit voltage;
obtaining the maximum inputtable power of the charging power;
if the input power exceeds the set power limit, reducing the drive signal duty cycle;
if the input power is less than eighty percent of the maximum inputtable power, input source detection is resumed.
In step 140, constant voltage charging under the current maximum inputtable power condition is performed according to the maximum inputtable power of the current input source.
Specifically, in one embodiment of the present application, the performing constant voltage charging under the current maximum inputtable power condition according to the maximum inputtable power of the current input source includes:
setting a charging voltage of an input source during constant voltage charging;
according to the charging voltage during constant voltage charging of the set input source, after the charging voltage during constant voltage charging is kept at the output voltage of the input source and reaches a set time threshold, constant voltage charging under the current maximum inputtable power condition is carried out;
and adjusting the duty ratio of the driving signal according to the output voltage of the input source, so that the output voltage is kept within the set threshold value of the charging voltage during constant-voltage charging until the battery is charged.
Specifically, in one embodiment of the present application, the adjusting the duty ratio of the driving signal according to the output voltage of the input source to keep the output voltage within the set threshold of the charging voltage during constant voltage charging until the battery is charged includes:
if the output voltage of the input source exceeds the charging voltage of 100mV at the time of constant voltage charging, the duty ratio of the driving signal is reduced;
if the output voltage of the input source is lower than the charging voltage at the time of constant voltage charging by 100mV, the duty ratio of the driving signal is increased;
if the output voltage of the input source is less than seventy percent of the open circuit voltage, input source detection is resumed.
Specifically, in one embodiment of the present application, if the input power, the output current, the output voltage, the MOS temperature, etc. monitored in real time are out of limits, the charging is stopped after the corresponding protection is triggered.
In the embodiment of the application, the input power of two set percentages is obtained according to the percentages of the output voltage and the open-circuit voltage of the input source; comparing the two input powers in the set percentage to obtain the type of the input source; according to the type of the input source, the duty ratio of the driving signal is adjusted, and the maximum inputtable power of the current input source is obtained; and carrying out constant voltage charging under the current maximum inputtable power condition according to the maximum inputtable power of the current input source. The method and the device can automatically judge the type of the input source, adjust the charging voltage of the input source according to the type of the input source, and conduct constant voltage charging on the battery, so that the purpose of safe charging is achieved, and the requirement of multiple input sources for battery charging can be met.
It should be understood that, although the steps in the flowchart of fig. 3 are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in fig. 3 may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor do the order in which the sub-steps or stages are performed necessarily performed in sequence, but may be performed alternately or alternately with at least a portion of the sub-steps or stages of other steps or other steps.
Fig. 4 is a schematic structural diagram of an MPPT control device of different input sources according to an embodiment of the present application, and as shown in fig. 4, the MPPT control device of different input sources includes:
the device comprises a power acquisition module, an input source judgment module and a charging control module;
the power acquisition module is used for acquiring the input power of the two set percentages according to the percentages of the output voltage and the open-circuit voltage of the input source;
the input source judging module is used for comparing the magnitude of the input power when the percentages are set, and acquiring the type of the input source;
and the charging control module is used for adjusting the duty ratio of the driving signal according to the type of the input source, obtaining the maximum inputtable power of the current input source, and carrying out constant voltage charging under the current maximum inputtable power condition according to the maximum inputtable power of the current input source.
Specifically, in another embodiment of the present application, the power acquisition module records an open circuit voltage of an input source; according to the open-circuit voltage, increasing the duty ratio of a driving signal of an input source, and pulling down the output voltage of the input source to ninety percent of the open-circuit voltage; recording the input source power at the moment as first power; according to the step of reducing the output voltage of the input source to ninety percent of the open-circuit voltage, the duty ratio of the driving signal of the input source is increased, and the output voltage of the input source is reduced to eighty percent of the open-circuit voltage; the input source power at this time is recorded as the second power.
Specifically, in another embodiment of the present application, the input source determining module determines that the input source is a photovoltaic power source if the first power is less than the second power; and if the first power is larger than the second power, determining that the input source is a direct current power supply.
Specifically, in another embodiment of the present application, the charging control module obtains, when the input source is a photovoltaic power source, a duty ratio of a driving signal through left-right disturbance adjustment, and searches for a power control direction; obtaining the maximum inputtable power of the charging power according to the power control direction; if the input power exceeds the set power limit, reducing the drive signal duty cycle; if the driving signal duty ratio has reached the maximum duty ratio and the input power is lower than the set value, the input source detection is performed again.
Specifically, in another embodiment of the present application, the charging control module adjusts the duty cycle of the driving signal to ninety percent of the output voltage as the open-circuit voltage according to the input source being the dc power source; obtaining the maximum inputtable power of the charging power; if the input power exceeds the set power limit, reducing the drive signal duty cycle; if the input power is less than eighty percent of the maximum inputtable power, input source detection is resumed.
Specifically, in another embodiment of the present application, the charging control module sets the charging voltage of the input source during constant voltage charging; according to the charging voltage during constant voltage charging of the set input source, after the charging voltage during constant voltage charging is kept at the output voltage of the input source and reaches a set time threshold, constant voltage charging under the current maximum inputtable power condition is carried out; and adjusting the duty ratio of the driving signal according to the output voltage of the input source, so that the output voltage is kept within the set threshold value of the charging voltage during constant-voltage charging until the battery is charged.
Specifically, in another embodiment of the present application, the charge control module determines that if the output voltage of the input source exceeds the charging voltage at the time of constant voltage charging by 100mV, the duty ratio of the driving signal is reduced; if the output voltage of the input source is lower than the charging voltage at the time of constant voltage charging by 100mV, the duty ratio of the driving signal is increased; if the output voltage of the input source is less than seventy percent of the open circuit voltage, input source detection is resumed.
In the embodiment of the application, the power acquisition module acquires the input power of two set percentages according to the percentages of the output voltage and the open-circuit voltage of the input source; the input source judging module compares the magnitude of the input power when two set percentages, and obtains the type of the input source; the charging control module adjusts the duty ratio of the driving signal according to the type of the input source to obtain the maximum inputtable power of the current input source; and carrying out constant voltage charging under the current maximum inputtable power condition according to the maximum inputtable power of the current input source. The method and the device can automatically judge the type of the input source, adjust the charging voltage of the input source according to the type of the input source, and conduct constant voltage charging on the battery, so that the purpose of safe charging is achieved, and the requirement of multiple input sources for battery charging can be met.
For specific limitations of the MPPT control apparatus for different input sources, reference may be made to the above limitations of the MPPT control method for different input sources, which are not described herein. The modules in the MPPT control device of the different input sources may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In particular, according to an embodiment of the present disclosure, as shown in FIG. 5, an electronic device is disclosed that includes one or more processors and memory for storing one or more programs; when the one or more programs are executed by the processor, the processor is caused to implement the MPPT control method of different input sources according to the embodiment of the invention.
In particular, according to embodiments of the present disclosure, the MPPT control method of the different input sources described in any of the above embodiments may be implemented as a computer software program. For example, embodiments of the present disclosure include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program containing program code for performing MPPT control methods for different input sources. In such embodiments, the computer program may be downloaded and installed from a network via a communication portion, and/or installed from a removable medium.
The one or more programs are stored in a read-only memory ROM or a random access memory RAM to perform various appropriate actions and processes. In the random access memory RAM, software programs for the server to complete the corresponding service are included, as well as various programs and data required for the driving operation of the vehicle. The server and its controlled hardware devices, read-only memory ROM, random access memory RAM are connected to each other via a bus to which various input/output interfaces are also connected.
The following components are connected to the input/output interface: an input section including a keyboard, a mouse, etc.; an output section including a cathode ray tube CRT, a liquid crystal display LCD, etc., and a speaker, etc.; and a communication section including a network interface card such as a LAN card, a modem, and the like. The communication section performs communication processing via a network such as the internet. The drive is also connected to the input/output interface as needed. Removable media such as magnetic disks, optical disks, magneto-optical disks, semiconductor memories, and the like are mounted on the drive as needed so that a computer program read therefrom is mounted into the memory as needed.
It will be appreciated by those skilled in the art that the structure shown in fig. 5 is merely a block diagram of a portion of the structure associated with the present application and is not limiting of the electronic device to which the present application is applied, and that a particular electronic device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In particular, according to embodiments of the present disclosure, the MPPT control method of the different input sources described in any of the above embodiments may be implemented as a computer software program. For example, embodiments of the present disclosure include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program containing program code for performing MPPT control methods for different input sources. In such embodiments, the computer program may be downloaded and installed from a network via a communication portion, and/or installed from a removable medium. The computer program may run on an electronic device as shown in fig. 4. The memory of the electronic device may store various program modules constituting the low-temperature charge and discharge management device for lithium iron battery, such as a power acquisition module, an input source determination module, and a charge control module shown in fig. 4. The computer program constituted by the respective program modules causes the processor to execute the steps in the low-temperature charge and discharge management method of the lithium iron battery of the respective embodiments of the present application described in the present specification.
In a specific embodiment, the processor of the present application, when executing one or more programs, is configured to obtain the input power at two set percentages according to the percentage of the output voltage of the input source and the open circuit voltage; comparing the two input powers in the set percentage to obtain the type of the input source; according to the type of the input source, the duty ratio of the driving signal is adjusted, and the maximum inputtable power of the current input source is obtained; and carrying out constant voltage charging under the current maximum inputtable power condition according to the maximum inputtable power of the current input source.
In a specific embodiment, the processor of the present application, when executing one or more programs, is configured to record the open circuit voltage of the input source; according to the open-circuit voltage, increasing the duty ratio of a driving signal of an input source, and pulling down the output voltage of the input source to ninety percent of the open-circuit voltage; recording the input source power at the moment as first power; according to the step of reducing the output voltage of the input source to ninety percent of the open-circuit voltage, the duty ratio of the driving signal of the input source is increased, and the output voltage of the input source is reduced to eighty percent of the open-circuit voltage; the input source power at this time is recorded as the second power.
In a specific embodiment, the processor of the present application, when executing one or more programs, is configured to determine that the input source is a photovoltaic power source if the first power is less than the second power; and if the first power is larger than the second power, determining that the input source is a direct current power supply.
In a specific embodiment, the processor of the present application, when executing one or more programs, is configured to, when the input source is a photovoltaic power source, adjust a duty cycle of a driving signal by left-right disturbance, and find a power control direction; obtaining the maximum inputtable power of the charging power according to the power control direction; if the input power exceeds the set power limit, reducing the drive signal duty cycle; if the driving signal duty ratio has reached the maximum duty ratio and the input power is lower than the set value, the input source detection is performed again.
In a specific embodiment, the processor of the present application, when executing one or more programs, is configured to adjust the duty cycle of the drive signal to ninety percent of the open circuit voltage when the input source is a dc power source; obtaining the maximum inputtable power of the charging power; if the input power exceeds the set power limit, reducing the drive signal duty cycle; if the input power is less than eighty percent of the maximum inputtable power, input source detection is resumed.
In a specific embodiment, the processor of the present application, when executing one or more programs, is configured to set a charging voltage at constant voltage charging of the input source; according to the charging voltage during constant voltage charging of the set input source, after the charging voltage during constant voltage charging is kept at the output voltage of the input source and reaches a set time threshold, constant voltage charging under the current maximum inputtable power condition is carried out; and adjusting the duty ratio of the driving signal according to the output voltage of the input source, so that the output voltage is kept within the set threshold value of the charging voltage during constant-voltage charging until the battery is charged.
In a specific embodiment, the processor of the present application, when executing one or more programs, is configured to determine that if the output voltage of the input source exceeds the charging voltage at the time of constant voltage charging by 100mV, then reduce the duty cycle of the driving signal; if the output voltage of the input source is lower than the charging voltage at the time of constant voltage charging by 100mV, the duty ratio of the driving signal is increased; if the output voltage of the input source is less than seventy percent of the open circuit voltage, input source detection is resumed.
In the embodiment of the application, the power acquisition module acquires the input power of two set percentages according to the percentages of the output voltage and the open-circuit voltage of the input source; the input source judging module compares the magnitude of the input power when two set percentages, and obtains the type of the input source; the charging control module adjusts the duty ratio of the driving signal according to the type of the input source to obtain the maximum inputtable power of the current input source; and carrying out constant voltage charging under the current maximum inputtable power condition according to the maximum inputtable power of the current input source. The method and the device can automatically judge the type of the input source, adjust the charging voltage of the input source according to the type of the input source, and conduct constant voltage charging on the battery, so that the purpose of safe charging is achieved, and the requirement of multiple input sources for battery charging can be met.
The units or modules described in the embodiments of the present application may be implemented by software, or may be implemented by hardware. The described units or modules may also be provided in a processor. The names of these units or modules do not in some way constitute a limitation of the unit or module itself.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (7)
1. An MPPT control method of different input sources, the method comprising:
acquiring input power when two set percentages are obtained according to the percentages of the output voltage and the open-circuit voltage of the input source;
comparing the two input powers in the set percentage to obtain the type of the input source;
according to the type of the input source, the duty ratio of the driving signal is adjusted, and the maximum inputtable power of the current input source is obtained;
constant voltage charging under the current maximum inputtable power condition is carried out according to the maximum inputtable power of the current input source;
the step of adjusting the duty ratio of the driving signal according to the type of the input source to obtain the maximum inputtable power of the current input source comprises the following steps:
when the input source is a photovoltaic power supply, the duty ratio of the driving signal is adjusted through left and right disturbance, and the power control direction is searched;
obtaining the maximum inputtable power of the charging power according to the power control direction;
if the input power exceeds the set power limit, reducing the drive signal duty cycle;
if the duty ratio of the driving signal reaches the maximum duty ratio and the input power is lower than the set value, the input source detection is performed again;
the step of adjusting the duty ratio of the driving signal according to the type of the input source to obtain the maximum inputtable power of the current input source comprises the following steps:
when the input source is a direct current power supply, the duty ratio of the driving signal is adjusted to ninety percent of the output voltage which is the open-circuit voltage;
obtaining the maximum inputtable power of the charging power;
if the input power exceeds the set power limit, reducing the drive signal duty cycle;
if the input power is less than eighty percent of the maximum inputtable power, the input source detection is performed again;
and performing constant voltage charging under the current maximum inputtable power condition according to the maximum inputtable power of the current input source, wherein the constant voltage charging comprises the following steps:
setting a charging voltage of an input source during constant voltage charging;
according to the charging voltage during constant voltage charging of the set input source, after the charging voltage during constant voltage charging is kept at the output voltage of the input source and reaches a set time threshold, constant voltage charging under the current maximum inputtable power condition is carried out;
and adjusting the duty ratio of the driving signal according to the output voltage of the input source, so that the output voltage is kept within the set threshold value of the charging voltage during constant-voltage charging until the battery is charged.
2. The method of claim 1, wherein the obtaining the input power for the two set percentages based on the percentage of the output voltage of the input source and the open circuit voltage comprises:
recording an open circuit voltage of an input source;
according to the open-circuit voltage, increasing the duty ratio of a driving signal of an input source, and pulling down the output voltage of the input source to ninety percent of the open-circuit voltage;
recording the input source power at the moment as first power;
according to the step of reducing the output voltage of the input source to ninety percent of the open-circuit voltage, the duty ratio of the driving signal of the input source is increased, and the output voltage of the input source is reduced to eighty percent of the open-circuit voltage;
the input source power at this time is recorded as the second power.
3. The method of claim 2, wherein comparing the magnitudes of the input power at the two set percentages to obtain the type of input source comprises:
if the first power is smaller than the second power, determining that the input source is a photovoltaic power supply;
and if the first power is larger than the second power, determining that the input source is a direct current power supply.
4. The method of claim 1, wherein adjusting the duty ratio of the driving signal according to the output voltage of the input source to keep the output voltage within a set threshold of the charging voltage at the time of constant voltage charging until the battery is charged, comprises:
if the output voltage of the input source exceeds the charging voltage of 100mV at the time of constant voltage charging, the duty ratio of the driving signal is reduced;
if the output voltage of the input source is lower than the charging voltage at the time of constant voltage charging by 100mV, the duty ratio of the driving signal is increased;
if the output voltage of the input source is less than seventy percent of the open circuit voltage, input source detection is resumed.
5. An MPPT control device for different input sources, the device comprising:
the power acquisition module is used for acquiring the input power of the two set percentages according to the percentages of the output voltage and the open-circuit voltage of the input source;
the input source judging module is used for comparing the magnitude of the input power when the percentages are set, and acquiring the type of the input source;
and the charging control module is used for adjusting the duty ratio of the driving signal according to the type of the input source, obtaining the maximum inputtable power of the current input source, and carrying out constant voltage charging under the current maximum inputtable power condition according to the maximum inputtable power of the current input source.
6. An electronic device comprising one or more processors and memory for storing one or more programs;
the one or more programs, when executed by the processor, cause the processor to implement the method of any of claims 1-4.
7. A computer readable storage medium storing a computer program, characterized in that the computer program when executed implements the method according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110876377.3A CN113690962B (en) | 2021-07-29 | 2021-07-29 | MPPT control method, device, equipment and storage medium for different input sources |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110876377.3A CN113690962B (en) | 2021-07-29 | 2021-07-29 | MPPT control method, device, equipment and storage medium for different input sources |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113690962A CN113690962A (en) | 2021-11-23 |
| CN113690962B true CN113690962B (en) | 2024-04-05 |
Family
ID=78578483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110876377.3A Active CN113690962B (en) | 2021-07-29 | 2021-07-29 | MPPT control method, device, equipment and storage medium for different input sources |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113690962B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115425733B (en) * | 2022-11-03 | 2023-02-14 | 深圳市华宝新能源股份有限公司 | Charging control method and device, solar charging controller and storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012010613A1 (en) * | 2010-07-22 | 2012-01-26 | Anacores Ltd. | Improved mppt- control for pwm - based dc -dc converters with average current control |
| CN104868495A (en) * | 2015-05-12 | 2015-08-26 | 江苏固德威电源科技有限公司 | Input source intelligent identification method applied to new energy hybrid inverter |
| CN105786080A (en) * | 2016-03-18 | 2016-07-20 | 北京理工大学 | MPPT control system and method for small-power wearable photovoltaic system |
| CN106463977A (en) * | 2014-05-15 | 2017-02-22 | 英特尔公司 | Battery charger for different power sources |
| CN106681423A (en) * | 2016-10-17 | 2017-05-17 | 国网重庆市电力公司电力科学研究院 | Maximum power point tracing method and device of photovoltaic cell |
| CN108631364A (en) * | 2018-05-24 | 2018-10-09 | 天津科林电气有限公司 | A kind of photovoltaic inverter control system and method being compatible with a variety of DC source inputs |
| CN109449989A (en) * | 2018-12-17 | 2019-03-08 | 江苏固德威电源科技股份有限公司 | A kind of inverter input side control method and the inverter using it |
| CN109787213A (en) * | 2017-11-13 | 2019-05-21 | 丰郅(上海)新能源科技有限公司 | Power supply system and its implementation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012127270A1 (en) * | 2011-03-23 | 2012-09-27 | Indian Institute Of Technology Bombay | Photo-voltaic array fed switched capacitor dc-dc converter based battery charging for li-ion batteries |
-
2021
- 2021-07-29 CN CN202110876377.3A patent/CN113690962B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012010613A1 (en) * | 2010-07-22 | 2012-01-26 | Anacores Ltd. | Improved mppt- control for pwm - based dc -dc converters with average current control |
| CN106463977A (en) * | 2014-05-15 | 2017-02-22 | 英特尔公司 | Battery charger for different power sources |
| CN104868495A (en) * | 2015-05-12 | 2015-08-26 | 江苏固德威电源科技有限公司 | Input source intelligent identification method applied to new energy hybrid inverter |
| CN105786080A (en) * | 2016-03-18 | 2016-07-20 | 北京理工大学 | MPPT control system and method for small-power wearable photovoltaic system |
| CN106681423A (en) * | 2016-10-17 | 2017-05-17 | 国网重庆市电力公司电力科学研究院 | Maximum power point tracing method and device of photovoltaic cell |
| CN109787213A (en) * | 2017-11-13 | 2019-05-21 | 丰郅(上海)新能源科技有限公司 | Power supply system and its implementation |
| CN108631364A (en) * | 2018-05-24 | 2018-10-09 | 天津科林电气有限公司 | A kind of photovoltaic inverter control system and method being compatible with a variety of DC source inputs |
| CN109449989A (en) * | 2018-12-17 | 2019-03-08 | 江苏固德威电源科技股份有限公司 | A kind of inverter input side control method and the inverter using it |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113690962A (en) | 2021-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11502534B2 (en) | Electrical energy storage system with battery state-of-charge estimation | |
| WO2022199585A1 (en) | Photovoltaic power generation system, power control device, and energy storage system | |
| US12334740B2 (en) | Power distribution apparatus, power distribution method, and computer-readable medium | |
| CN103226373A (en) | Method and arrangement in connection with photovoltaic power generator composed of series-connected photovoltaic modules | |
| CN114779871A (en) | Maximum power point tracking method, photovoltaic controller and photovoltaic system | |
| CN113690962B (en) | MPPT control method, device, equipment and storage medium for different input sources | |
| CN116418056A (en) | Charging control method, electronic device, and computer-readable storage medium | |
| CN117148174A (en) | Battery aging test regulation and control method, device, computer equipment and storage medium | |
| KR20240073636A (en) | String optima for diagnosing iv curve for each string, solar power generation system having the same, and method for controlling therefor | |
| CN113612294B (en) | Charging control method and system for battery cabinet with solar energy-saving system | |
| WO2025092890A1 (en) | Charging control method, apparatus and device, energy storage system, and computer device | |
| CN112910035A (en) | Method and device for detecting battery cell charging, electronic equipment and storage medium | |
| CN114172256A (en) | Solar energy power generation intelligent control device | |
| CN116860066B (en) | Maximum power point voltage judging method, electronic equipment and storage medium | |
| CN115954965A (en) | Charging control method, charging system, charging device, electronic device, and storage medium | |
| CN117394501B (en) | Data processing method of parallel energy storage system | |
| US20240055872A1 (en) | Charging method of energy storage power supply, charging apparatus therefor, device, and medium | |
| CN118137542A (en) | Photovoltaic energy storage scheduling method and device, computer equipment and storage medium | |
| CN114268141B (en) | Method and system for correcting and adjusting SOC of energy storage system | |
| CN116488578A (en) | Photovoltaic equipment analysis method based on AI visual assistance | |
| CN116404652A (en) | Method and system for compensating loss of distributed photovoltaic power generation | |
| CN113014773B (en) | Video visualization monitoring system and method for overhead line | |
| JP2000261979A (en) | Solar cell / capacitor power supply device and charging method | |
| CN119134535B (en) | An advanced power control method suitable for marine photovoltaic power generation system | |
| CN117254586B (en) | Distributed energy grid-connected monitoring regulation and control system |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |