CN217010804U - Intelligent power supply circuit for photovoltaic power generation - Google Patents
Intelligent power supply circuit for photovoltaic power generation Download PDFInfo
- Publication number
- CN217010804U CN217010804U CN202220318503.3U CN202220318503U CN217010804U CN 217010804 U CN217010804 U CN 217010804U CN 202220318503 U CN202220318503 U CN 202220318503U CN 217010804 U CN217010804 U CN 217010804U
- Authority
- CN
- China
- Prior art keywords
- control switch
- circuit
- load
- freewheeling diode
- filter capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims description 36
- 238000011084 recovery Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model provides an intelligent power supply circuit for photovoltaic power generation, which relates to the technical field of electric energy conversion and comprises a photovoltaic cell, a first control switch, a first voltage reduction circuit, a second control switch, a second voltage reduction circuit, a third control switch, a controller, a battery pack, a booster circuit and a load. The photovoltaic battery not only supplies power to the load, but also can store redundant electric energy in the battery pack; when the energy of the photovoltaic cell is insufficient, the photovoltaic cell and the battery pack can jointly supply power to the load, and the load can be stably supplied with power.
Description
Technical Field
The utility model relates to the technical field of electric energy conversion, in particular to an intelligent power supply circuit for photovoltaic power generation.
Background
With the rapid development of economy, energy has become an important factor restricting the development of economic society, so the development of new energy has become a hot topic in the world at present, and the related technology is more and more emphasized. Distributed power generation units such as photovoltaic power generation, wind power generation and the like have the advantages of cleanness, no pollution and the like, and are one of important ways for solving energy and environmental problems in the future. With the continuous development of new energy power generation technology, a micro-grid capable of integrating various distributed energy sources is an effective way for saving investment, improving the stability of the grid and improving the quality of electric energy. Solar energy is used as a clean renewable energy source, and has great advantages in the aspects of environmental protection and energy conservation. However, the utilization rate is often not high, the requirements on the use environment are strict, and a scene with insufficient sunlight cannot provide stable voltage and cannot be used for loads with requirements on power stability.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In view of the above-mentioned problems of the prior art, the present invention provides an intelligent power circuit for photovoltaic power generation, which not only can realize the maximum power output of a photovoltaic cell, but also can realize stable power supply to a load.
(II) technical scheme
In order to achieve the purpose, the utility model is realized by the following technical scheme:
an intelligent power supply circuit for photovoltaic power generation comprises a photovoltaic cell, a first control switch, a first voltage reduction circuit, a second control switch, a second voltage reduction circuit, a third control switch, a controller, a battery pack, a boost circuit and a load; the photovoltaic cell is connected with the input end of the first voltage reduction circuit through the first control switch, and the output end of the first voltage reduction circuit is connected with the load and supplies power to the load; the photovoltaic cell is also connected with the input end of a second voltage reduction circuit through a second control switch, and the output end of the second voltage reduction circuit is connected with the battery pack; the battery pack is connected with the input end of the booster circuit through the third control switch, and the output end of the booster circuit is connected with the load and supplies power to the load; the first control switch, the second control switch and the third control switch are connected with a controller, and the controller is further connected with the photovoltaic cell and the load.
Preferably, the first voltage reduction circuit and the second voltage reduction circuit are a first Buck circuit and a second Buck circuit.
Preferably, the first Buck circuit comprises a MOS transistor Q1, a freewheeling diode VD1, a filter inductor L1 and a filter capacitor C1, the drain of the MOS transistor Q1 is connected to an output end of the first control switch, the source of the MOS transistor Q1 is connected to the cathode of the freewheeling diode VD1 and one end of the filter inductor L1, the other end of the filter inductor L1 is connected to one end of the filter capacitor C1, and the other end of the filter capacitor C1 is connected to the anode of the freewheeling diode VD1 and the other output end of the first control switch.
Preferably, the second Buck circuit comprises a MOS transistor Q2, a freewheeling diode VD2, a filter inductor L2 and a filter capacitor C2, the drain of the MOS transistor Q2 is connected to an output end of the second control switch, the source of the MOS transistor Q2 is connected to the cathode of the freewheeling diode VD2 and one end of the filter inductor L2, the other end of the filter inductor L2 is connected to one end of the filter capacitor C2, and the other end of the filter capacitor C2 is connected to the anode of the freewheeling diode VD2 and the other output end of the second control switch.
Preferably, the MOS transistor Q1 is KIA6110A, the freewheeling diode VD1 is a fast recovery diode IN4148, the filter inductor L1 is 120uH, and the filter capacitor C1 is 2200 uF.
Preferably, the MOS transistor Q2 is KIA6110A, the freewheeling diode VD2 is a fast recovery diode IN4148, the filter inductor L2 is 100uH, and the filter capacitor C2 is 2200 uF.
Preferably, the Boost circuit is a Boost circuit.
Preferably, the Boost circuit comprises a MOS transistor Q3, a freewheeling diode VD3, a filter inductor L3 and a filter capacitor C3, one end of the filter inductor L3 is connected to one end of the third control switch, the other end of the filter inductor L3 is connected to the drain of the MOS transistor Q3 and the anode of the freewheeling diode VD3, the cathode of the freewheeling diode VD3 is connected to one end of the filter capacitor C3, and the other end of the filter capacitor C3 is connected to the source of the MOS transistor Q3 and the other end of the third control switch.
Preferably, the MOS transistor Q3 is KIA6110A, the freewheeling diode VD3 is a fast recovery diode IN4148, the filter inductor L3 is 480uH, and the filter capacitor C3 is 1 mF.
(III) advantageous effects
The utility model has the beneficial effects that: an intelligent power supply circuit for photovoltaic power generation is composed of a photovoltaic cell, a first voltage reduction circuit, a second voltage reduction circuit, a voltage boosting circuit, a controller and a control switch, and not only is the photovoltaic cell used for supplying power to a load realized, but also the photovoltaic cell can store redundant electric energy in a battery pack; when the energy of the photovoltaic cell is insufficient, the photovoltaic cell and the battery pack can jointly supply power to the load, and stable power supply to the load can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an intelligent power supply circuit of the present invention;
FIG. 2 is a schematic diagram of a first Buck circuit of the present invention;
FIG. 3 is a schematic diagram of a second Buck circuit of the present invention;
fig. 4 is a schematic diagram of the Boost circuit of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.
With reference to fig. 1, an intelligent power circuit for photovoltaic power generation includes a photovoltaic cell, a first control switch, a first voltage-reducing circuit, a second control switch, a second voltage-reducing circuit, a third control switch, a controller, a battery pack, a voltage-boosting circuit, and a load.
The photovoltaic cell is connected with the input end of the first voltage reduction circuit through the first control switch, and the output end of the first voltage reduction circuit is connected with the load and supplies power to the load; the photovoltaic cell is also connected with the input end of a second voltage reduction circuit through a second control switch, and the output end of the second voltage reduction circuit is connected with the battery pack; the battery pack is connected with the input end of the booster circuit through the third control switch, and the output end of the booster circuit is connected with the load and supplies power to the load; the first control switch, the second control switch and the third control switch are connected with a controller, and the controller is further connected with the photovoltaic cell and the load.
The output end voltage of the photovoltaic cell is 60-80V, the load is 48V, and the battery pack is 16V. The controller adopts an STM32 single chip microcomputer, the single chip microcomputer collects the output voltage and the output current of the photovoltaic cell through A/D sampling, and simultaneously collects the voltage and the current of a load end to carry out maximum power tracking control on the photovoltaic cell. The singlechip controls the first control switch to be conducted, the photovoltaic cell supplies power to the load through the first voltage reduction circuit, when the output power of the photovoltaic cell is greater than the power of the load end, the singlechip controls the second control switch to be conducted, and the photovoltaic cell supplies power to the load and charges the battery pack through the second voltage reduction circuit; when the output power of the photovoltaic cell is smaller than the power required by the load, the singlechip controls the third control switch to be conducted, the battery pack supplies power to the load through the booster circuit, and the photovoltaic cell and the battery pack provide energy for the load together.
Preferably, the first voltage reduction circuit is a first Buck circuit. With reference to fig. 2, the first Buck circuit includes a MOS transistor Q1, a freewheeling diode VD1, a filter inductor L1, and a filter capacitor C1, the drain of the MOS transistor Q1 is connected to an output terminal of the first control switch, the source of the MOS transistor Q1 is connected to the cathode of the freewheeling diode VD1 and one end of the filter inductor L1, the other end of the filter inductor L1 is connected to one end of the filter capacitor C1, and the other end of the filter capacitor C1 is connected to the anode of the freewheeling diode VD1 and the other output terminal of the first control switch. The MOS tube Q1 is KIA6110A, the freewheeling diode VD1 is a fast recovery diode IN4148, the filter inductor L1 is 120uH, and the filter capacitor C1 is 2200 uF.
With reference to fig. 3, the second Buck circuit includes a MOS transistor Q2, a freewheeling diode VD2, a filter inductor L2, and a filter capacitor C2, the drain of the MOS transistor Q2 is connected to an output terminal of the second control switch, the source of the MOS transistor Q2 is connected to the cathode of the freewheeling diode VD2 and one end of the filter inductor L2, the other end of the filter inductor L2 is connected to one end of the filter capacitor C2, and the other end of the filter capacitor C2 is connected to the anode of the freewheeling diode VD2 and the other output terminal of the second control switch. The MOS tube Q2 is KIA6110A, the freewheeling diode VD2 is a fast recovery diode IN4148, the filter inductor L2 is 100uH, and the filter capacitor C2 is 2200 uF.
Preferably, the Boost circuit is a Boost circuit. With reference to fig. 4, the Boost circuit includes a MOS transistor Q3, a freewheeling diode VD3, a filter inductor L3, and a filter capacitor C3, where one end of the filter inductor L3 is connected to one end of the third control switch, the other end of the filter inductor L3 is connected to the drain of the MOS transistor Q3 and the anode of the freewheeling diode VD3, the cathode of the freewheeling diode VD3 is connected to one end of the filter capacitor C3, and the other end of the filter capacitor C3 is connected to the source of the MOS transistor Q3 and the other end of the third control switch. The MOS tube Q3 is KIA6110A, the freewheeling diode VD3 is a fast recovery diode IN4148, the filter inductor L3 is 480uH, and the filter capacitor C3 is 1 mF.
In summary, the embodiment of the utility model not only realizes that the photovoltaic cell supplies power to the load, but also the photovoltaic cell can store redundant electric energy in the battery pack; when the energy of the photovoltaic cell is insufficient, the photovoltaic cell and the battery pack can jointly supply power to the load, and stable power supply to the load can be realized.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. An intelligent power supply circuit for photovoltaic power generation, characterized in that: the photovoltaic cell control circuit comprises a photovoltaic cell, a first control switch, a first voltage reduction circuit, a second control switch, a second voltage reduction circuit, a third control switch, a controller, a battery pack, a booster circuit and a load;
the photovoltaic cell is connected with the input end of the first voltage reduction circuit through the first control switch, and the output end of the first voltage reduction circuit is connected with the load and supplies power to the load;
the photovoltaic cell is also connected with the input end of a second voltage reduction circuit through a second control switch, and the output end of the second voltage reduction circuit is connected with the battery pack;
the battery pack is connected with the input end of the booster circuit through the third control switch, and the output end of the booster circuit is connected with the load and supplies power to the load;
the first control switch, the second control switch and the third control switch are connected with a controller, and the controller is further connected with the photovoltaic cell and a load.
2. The intelligent power supply circuit for photovoltaic power generation as claimed in claim 1, wherein: the first voltage reduction circuit is a first Buck circuit, and the second voltage reduction circuit is a second Buck circuit.
3. The intelligent power supply circuit for photovoltaic power generation as claimed in claim 2, wherein: the first Buck circuit comprises an MOS tube Q1, a freewheeling diode VD1, a filter inductor L1 and a filter capacitor C1, wherein the drain electrode of the MOS tube Q1 is connected with an output end of a first control switch, the source electrode of the MOS tube Q1 is connected with the cathode of the freewheeling diode VD1 and one end of the filter inductor L1, the other end of the filter inductor L1 is connected with one end of the filter capacitor C1, and the other end of the filter capacitor C1 is connected with the anode of the freewheeling diode VD1 and the other output end of the first control switch.
4. The intelligent power supply circuit for photovoltaic power generation as claimed in claim 2, wherein: the second Buck circuit comprises an MOS tube Q2, a freewheeling diode VD2, a filter inductor L2 and a filter capacitor C2, wherein the drain electrode of the MOS tube Q2 is connected with the output end of the second control switch, the source electrode of the MOS tube Q2 is connected with the cathode of the freewheeling diode VD2 and one end of the filter inductor L2, the other end of the filter inductor L2 is connected with one end of the filter capacitor C2, and the other end of the filter capacitor C2 is connected with the anode of the freewheeling diode VD2 and the other output end of the second control switch.
5. The intelligent power supply circuit for photovoltaic power generation as claimed in claim 3, wherein: the MOS tube Q1 is KIA6110A, the freewheeling diode VD1 is a fast recovery diode IN4148, the filter inductor L1 is 120uH, and the filter capacitor C1 is 2200 uF.
6. The intelligent power supply circuit for photovoltaic power generation as claimed in claim 4, wherein: the MOS tube Q2 is KIA6110A, the freewheeling diode VD2 is a fast recovery diode IN4148, the filter inductor L2 is 100uH, and the filter capacitor C2 is 2200 uF.
7. The intelligent power supply circuit for photovoltaic power generation as claimed in claim 1, wherein: the Boost circuit is a Boost circuit.
8. The intelligent power supply circuit for photovoltaic power generation as claimed in claim 7, wherein: the Boost circuit comprises an MOS tube Q3, a freewheeling diode VD3, a filter inductor L3 and a filter capacitor C3, wherein one end of the filter inductor L3 is connected with one end of a third control switch, the other end of the filter inductor L3 is respectively connected with the drain electrode of the MOS tube Q3 and the anode of the freewheeling diode VD3, the cathode of the freewheeling diode VD3 is connected with one end of the filter capacitor C3, and the other end of the filter capacitor C3 is connected with the source electrode of the MOS tube Q3 and the other end of the third control switch.
9. The intelligent power supply circuit for photovoltaic power generation as recited in claim 8, wherein: the MOS tube Q3 is KIA6110A, the freewheeling diode VD3 is a fast recovery diode IN4148, the filter inductor L3 is 480uH, and the filter capacitor C3 is 1 mF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220318503.3U CN217010804U (en) | 2022-02-17 | 2022-02-17 | Intelligent power supply circuit for photovoltaic power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220318503.3U CN217010804U (en) | 2022-02-17 | 2022-02-17 | Intelligent power supply circuit for photovoltaic power generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217010804U true CN217010804U (en) | 2022-07-19 |
Family
ID=82393967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220318503.3U Expired - Fee Related CN217010804U (en) | 2022-02-17 | 2022-02-17 | Intelligent power supply circuit for photovoltaic power generation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217010804U (en) |
-
2022
- 2022-02-17 CN CN202220318503.3U patent/CN217010804U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101860270B (en) | Access system for adequately utilizing wind energy and solar energy and realization method thereof | |
| CN203377785U (en) | Charging and discharging type DC-DC conversion circuit and new energy power generation system | |
| CN101917017B (en) | Single-stage boosting/reducing energy storage type photovoltaic grid-connected power generation control system | |
| Belkaid et al. | Design and implementation of a cuk converter controlled by a direct duty cycle INC-MPPT in PV battery system | |
| CN107947572B (en) | A kind of series hybrid multiport DC/DC converter suitable for energy-storage units access | |
| CN101917016A (en) | Energy-saving type cascade multilevel photovoltaic grid-connected generating control system | |
| CN102223068A (en) | Combined type DC-DC (direct current) converter | |
| CN101710805A (en) | Independent photovoltaic power generation system and working method for tracking maximum power thereof | |
| CN103684214A (en) | Multi-mode wind-and-solar electricity generation system | |
| CN103904891A (en) | Double-input BUCK direct-current converter and control system thereof | |
| CN103312168A (en) | Bidirectional double-input ZETA direct-current converter and power distribution method thereof | |
| CN103501020A (en) | Hybrid power supply system consisting of mains supply network and photovoltaic assembly and control method thereof | |
| CN108233713B (en) | A kind of non-isolated three-port DC switch converters and its control method | |
| CN109327136B (en) | Three-level boosting type direct current conversion topology based on coupling winding unit | |
| CN105186919A (en) | Non-isolated grid-connected converter, air-conditioning system and converter control method | |
| CN104038056A (en) | Dual-input BUCK direct current converter and control system of dual-input BUCK direct current converter | |
| CN103346670A (en) | Dual-direction dual-input ZETA/SEPIC direct-current converter and power distribution method thereof | |
| CN103296879A (en) | Two-way two-input CUK direct-current converter and power distribution method thereof | |
| CN110086340B (en) | Coupling inductance bidirectional large-transformation-ratio DC-DC converter | |
| CN217010804U (en) | Intelligent power supply circuit for photovoltaic power generation | |
| CN204696953U (en) | A kind of Z-source inverter being applicable to photovoltaic generation | |
| CN216649240U (en) | Topological structure for integrating renewable energy and energy storage technology into power grid | |
| CN112865536B (en) | High-voltage gain non-isolated three-port converter | |
| CN103312160A (en) | Bidirectional two-input CUCK/SEPIC direct current converter and power distribution method thereof | |
| CN212210848U (en) | Boost conversion circuit based on control chip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220719 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |