CN113048431A - Wind-solar complementary thin-film solar street lamp - Google Patents
Wind-solar complementary thin-film solar street lamp Download PDFInfo
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- CN113048431A CN113048431A CN202110340385.6A CN202110340385A CN113048431A CN 113048431 A CN113048431 A CN 113048431A CN 202110340385 A CN202110340385 A CN 202110340385A CN 113048431 A CN113048431 A CN 113048431A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
- F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
- F21S9/026—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by using wind power, e.g. using wind turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
- F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
- F21S9/03—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light
- F21S9/035—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light the solar unit being integrated within the support for the lighting unit, e.g. within or on a pole
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
- F21S9/04—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a generator
- F21S9/043—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a generator driven by wind power, e.g. by wind turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/103—Outdoor lighting of streets or roads
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
Abstract
The invention provides a wind-solar complementary thin-film solar street lamp which comprises a fixing frame, wherein two sides of the top of the fixing frame are rotatably connected with thin-film solar panels, and the thin-film solar panels are turned downwards to cover a frame and shield fan blades; the thin-film solar cell panel is turned upwards to expose the fan blade; the MPPT controller tracks the output power of the thin-film solar cell panel and the wind driven generator, and the microcontroller sends a turning control instruction to the motor; the MPPT controller tracks the output voltage of the thin-film solar cell panel and the wind driven generator and compares the output voltage with a reference voltage to control the duty ratio of the MOSFET. The invention can controllably select the power generation mode according to the weather change and the output power change of wind power generation and solar power generation, and adjusts the output power of the two branches by using the power tracking method, thereby effectively improving the utilization rate of the output power of the wind-solar hybrid system.
Description
Technical Field
The invention relates to the technical field of wind-solar hybrid power generation, in particular to a wind-solar hybrid thin-film solar street lamp.
Background
The green energy sources such as wind energy and solar energy are inexhaustible for human beings. With the continuous progress and innovation of science and technology, the clean energy will gradually replace the traditional energy mainly comprising petroleum, coal and the like. The 'new energy joy planning' in China is being implemented, wind energy and solar energy form a certain scale, and the traditional power grid street lamp is gradually replaced in the street lamp field.
The working principle of wind-solar hybrid power generation is as follows: on one hand, natural wind is used as power, the wind wheel absorbs the energy of the wind to drive the wind driven generator to rotate, electric energy is generated to charge the storage battery and store the electric energy, and meanwhile, the photovoltaic effect of the photovoltaic panel is utilized to directly convert the solar energy into the electric energy to charge the storage battery and store the electric energy.
However, the wind power generator and the photovoltaic panel are often influenced by weather changes, so that the electric energy generated by the complementary power generation of the two branches of wind and light is unstable, and limited by the highest charging voltage of the storage battery, the output voltage of the photovoltaic panel and the output voltage of the wind power generator cannot be too much higher than the highest charging voltage of the storage battery, so that even though the photovoltaic panel and the wind power generator can generate a large amount of electric energy, the output power is very low, waste of clean energy is caused, and the charging efficiency of the storage battery is also low.
Therefore, how to provide a wind-solar complementary thin-film solar street lamp of a wind-solar complementary power generation system which fully utilizes wind energy and light energy is a problem which needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
In view of the above, the invention provides a wind-solar hybrid thin-film solar street lamp, which can controllably select a power generation mode according to weather changes and output power changes of two branches of wind power generation and solar power generation by using a controllable combined structure of a thin-film solar panel and a fan of a wind power generator, and adjust the output power of the two branches by using a power tracking method, thereby effectively improving the utilization rate of the output power of a wind-solar hybrid system.
In order to achieve the purpose, the invention adopts the following technical scheme:
a wind-solar complementary thin-film solar street lamp comprises a lamp post, a lamp body, a fixing frame, a storage battery pack, a thin-film solar panel, a wind driven generator, an MPPT controller and a microcontroller; wherein the content of the first and second substances,
the lamp body is arranged on one side of the lamp post, and the fixed frame is arranged at the top of the lamp post;
the middle part of the fixed frame is provided with a wind driven generator, an input shaft of the wind driven generator is connected with a fan blade, and the fixed frame is provided with a frame positioned on the periphery of the fan blade;
the two sides of the top of the fixing frame are rotatably connected with the thin-film solar cell panels, and the thin-film solar cell panels are turned downwards to cover the frame and shield the fan blades; the thin-film solar cell panel is turned upwards to be in a horizontal state to the maximum extent, and the fan blade is exposed;
the microcontroller is connected with a motor for controlling the thin-film solar cell panel to turn over;
the MPPT controller tracks the output power of the thin-film solar cell panel and the output power of the wind driven generator and transmits the output power to the microcontroller, and the microcontroller sends a turning control instruction to the motor;
the MPPT controller tracks the output voltage of the thin-film solar panel and the wind driven generator and compares the output voltage with a reference voltage to control the duty ratio of the MOSFET.
Preferably, the side edge of the thin-film solar cell panel is hinged to the fixing frame through a rotating shaft, and the output shaft of the motor is directly connected with the rotating shaft, or the output shaft of the motor is rotatably connected with the rotating shaft through a worm gear.
Preferably, the solar cell panel and the wind driven generator supply power to a load in real time, and the load comprises a monitoring camera.
Preferably, the wind-solar complementary thin-film solar street lamp comprises a first working state and a second working state;
in the first working state, the thin-film solar cell shields the fan blade and supplies power to the storage battery pack or the load;
the working state II is that the thin-film solar cell is turned upwards to expose the fan blade, and the solar cell panel and the wind driven generator jointly supply power to the storage battery pack or the load;
the MPPT controller tracks the output power of the thin-film solar cell panel and transmits the output power to the microcontroller to compare the storage capacity of the storage battery with the load working power, and if the output power is lower than the load working power, the microcontroller sends a turning control instruction to the motor to enter a working state II.
Preferably, in the second working state, the microcontroller detects the storage capacity of the storage battery pack in real time, and when the requirement of the load working power is met, the microcontroller sends a turning control instruction to the motor to enter the first working state.
Preferably, the thin-film solar cell panel is connected in series with a MOSFET (metal-oxide-semiconductor field effect transistor) and a resistor through a diode, and the MOSFET is connected with the cathode of the diode; the MPPT controller is connected with the diode cathode node and collects the output voltage V of the thin-film solar cell panelpv1；
The MPPT controller generates a reference voltage signal by using an MPPT algorithm, and then the reference voltage signal and a voltage signal V acquired by the current MPPT controllerpv1Comparing, transmitting the obtained result to a first PI controller, and then obtaining a duty ratio d1Last duty cycle d1And then compared with the triangular wave to generate PWM to control the MOSFET field effect transistor.
Preferably, the first working state further includes the MPPT controller according to duty ratio d1After the MOSFET field effect transistor is controlled, the output voltage intensity of the thin-film solar cell panel is detected again, the output power of the thin-film solar cell panel after adjustment is calculated, the output power before and after adjustment is compared, and if the output power after adjustment is larger than the output power before adjustment, the MPPT controller controls the PI controller to continuously increase the duty ratio d1(ii) a If the adjusted output power is smaller than the output power before adjustment, the MPPT controller controls the PI controller to continuously reduce the duty ratio d1。
Preferably, the wind driven generator is connected in series with the MOSFET and the resistor through a rectifying circuit; the MPPT controller is connected with the output end node of the rectifying circuit and used for collecting the output voltage V of the wind driven generatorpv2；
The MPPT controller generates a reference voltage signal by using an MPPT algorithm, and then the reference voltage signal and a voltage signal V acquired by the current MPPT controllerpv2Comparing, transmitting the obtained result to a second PI controller, and obtaining the duty ratio d2Last duty cycle d2And then compared with the triangular wave to generate PWM to control the MOSFET field effect transistor.
Preferably, the second operating state further includes that the MPPT controller is configured to control the MPPT according to the duty ratio d1And d2After the MOSFET field effect transistor is controlled, the output voltage intensity of the thin-film solar cell panel and the output voltage intensity of the wind driven generator are detected again, the output power of the thin-film solar cell panel and the output power of the wind driven generator after adjustment are obtained through calculation, the output power before and after adjustment is compared, and if the output power after adjustment is larger than the output power before adjustment, the MPPT controller controls the PI controller II to continuously increase the duty ratio d1And d2(ii) a If the adjusted output power is smaller than the output power before adjustment, the MPPT controller controls the second PI controller to continuously reduce the duty ratio d1And d2。
Through the technical scheme, compared with the prior art, the invention has the beneficial effects that:
1. the power generation system of the wind-solar complementary thin-film solar street lamp adopts a reversible thin-film solar cell panel structure, can switch the working state in real time according to the environment and the load condition, has stronger environmental applicability, can avoid the waste of output electric energy and can avoid the long-term damage to the charging voltage of a storage battery;
2. according to the invention, an output power regulation and control circuit of the thin-film solar cell panel and an output power regulation and control circuit of the wind driven generator are constructed by utilizing an improved circuit of the MPPT controller, so that the output power of the thin-film solar cell panel and the output power of the wind driven generator are finely regulated in a first working state and a second working state, and the wind driven generator and the thin-film solar cell panel work in a state close to the maximum output power of the wind driven generator and the thin-film solar cell panel, so that the output power of the whole wind-solar complementary thin-film solar street lamp power generation system can be obviously improved, and the;
3. the invention has obvious advantages for the condition of supplying power to the load in real time, and can effectively prevent the problem of unstable power supply voltage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts;
fig. 1 is a schematic overall structure diagram of a wind-solar hybrid thin-film solar street lamp provided by an embodiment of the invention;
fig. 2 is a schematic view of a connection structure between a thin film solar cell panel and a fixing frame according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an output power regulating circuit of a thin film solar cell panel and an output power regulating circuit of a wind driven generator according to an embodiment of the present invention.
Detailed Description
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 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.
The present embodiment discloses a wind-solar hybrid thin-film solar street lamp, which is shown in fig. 1 as an overall structural schematic diagram. The existing wind-solar complementary street lamp is only provided with the wind driven generator of the photovoltaic panel, and the wind driven generator and the storage battery pack are charged simultaneously, so that the electric energy utilization rate is low. The solar street lamp comprises a lamp post 1, a lamp body 6, a fixing frame 2, a storage battery pack, a thin-film solar cell panel 3, a wind driven generator, an MPPT controller and a microcontroller; a lamp body 6 is arranged on one side of the lamp post 1, and a fixed frame 2 is arranged on the top of the lamp post 1; the middle part of the fixed frame 2 is provided with a wind driven generator, the input shaft of the wind driven generator is connected with a fan blade 4, and the fixed frame 2 is provided with a frame 7 positioned at the periphery of the fan blade 4; the two sides of the top of the fixing frame 2 are rotatably connected with the thin-film solar cell panel 3, and the thin-film solar cell panel 3 is turned downwards to cover the frame 7 and shield the fan blade 4; the thin-film solar cell panel 3 is turned upwards to be in a horizontal state to the maximum extent, and the fan blade 4 is exposed; the microcontroller is connected with a motor for controlling the turning of the thin-film solar cell panel 3.
Regarding the connection structure of the thin-film solar cell panel 3, the wind driven generator and the fixing frame 2, the following technical scheme can be adopted to realize: the side edge of the thin-film solar cell panel 3 is hinged to the fixing frame 2 through a rotating shaft 5, and an output shaft of the motor is directly connected with the rotating shaft 5 or is rotatably connected with the rotating shaft 5 through a worm gear. The thin-film solar cell panel 3 is turned over and opened towards the two sides of the frame 7 of the fixing frame 2, and when the thin-film solar cell panel is opened to the horizontal position, the flow of air flow in the frame 7 is not influenced, and solar energy can be absorbed to the maximum extent to perform photoelectric conversion. Meanwhile, according to the sun irradiation angle, the turning angle of the thin-film solar cell panel 3 can be controlled and the thin-film solar cell panel can be positioned to any angle (less than 90 degrees).
As can be understood by those skilled in the art, the worm gear is suitable for the structural design with limited integration space and the need of changing the transmission direction, and the specific position relationship is set as required by those skilled in the art through the transmission principle of the worm gear.
In the embodiment, the MPPT controller tracks the output power of the thin-film solar cell panel 3 and the wind driven generator and transmits the output power to the microcontroller, and the microcontroller sends a turning control instruction to the motor; the branches of the solar cell panel and the wind driven generator for charging the storage battery pack are both connected in series with MOSFET field effect transistors and resistors, the MPPT controller tracks the output voltage of the thin-film solar cell panel 3 and the wind driven generator, and compares the output voltage with a reference voltage to control the duty ratio of the MOSFET field effect transistors.
The resistor and the MOSFET are connected in series, and under the condition that the output voltage is basically stable, the average current passing through the resistor is changed by changing the duty ratio of the MOSFET, so that the current disturbance is generated.
In one embodiment, the solar panel and the wind turbine provide real-time power to a load, the load including a monitoring camera.
In one embodiment, the wind-solar hybrid thin-film solar street lamp comprises a first working state and a second working state;
in the first working state, the thin-film solar cell shields the fan blade 4 and supplies power to the storage battery pack or the load;
in the working state II, the thin-film solar cell is turned upwards to expose the fan blade 4, and the solar cell panel and the wind driven generator supply power to the storage battery pack or the load together;
the MPPT controller tracks the output power of the thin-film solar cell panel 3 and transmits the output power to the microcontroller to be compared with the load working power according to the storage amount of the storage battery pack, and if the output power is lower than the load working power, the microcontroller sends a turning control instruction to the motor to enter a working state II.
In this embodiment, the specific execution flow is as follows:
the microcontroller controls the thin-film solar cell panel 3 to carry out photovoltaic power generation at ordinary times, namely, the working state is one, when the electric energy storage of the storage battery pack is insufficient to support load work due to weather reasons, the MPPT controller tracks the output voltage of the thin-film solar cell panel 3, and the output voltage is compared with the reference voltage to control the duty ratio of the MOSFET, so that the output power of the thin-film solar cell panel 3 is further increased.
The execution flow circuit is configured as follows:
the thin-film solar cell panel 3 is connected with the MOSFET and the resistor in series through the diode, and the MOSFET is connected with the cathode of the diode; the MPPT controller is connected with a diode cathode node and used for collecting the output voltage V of the thin-film solar cell panel 3pv1；
The MPPT controller generates a reference voltage signal by using an MPPT algorithm, and then the reference voltage signal and a voltage signal V acquired by the current MPPT controllerpv1Comparing, transmitting the obtained result to a first PI controller, and then obtaining a duty ratio d1Last duty cycle d1And then compared with the triangular wave to generate PWM to control the MOSFET field effect transistor.
After controlling the MOSFET according to the duty ratio d1, the MPPT controller detects the output voltage intensity of the thin-film solar cell panel 3 again, calculates to obtain the output power of the thin-film solar cell panel 3 after adjustment, compares the output power before and after adjustment, and controls the PI controller to continuously increase the duty ratio d1 if the output power after adjustment is larger than the output power before adjustment; if the adjusted output power is smaller than the output power before adjustment, the MPPT controller controls the PI controller to continuously decrease the duty ratio d 1.
And in the second working state, the microcontroller detects the storage capacity of the storage battery pack in real time, and when the requirement of the load working power is met, the microcontroller sends a turnover control instruction to the motor to enter the first working state.
In this embodiment, the specific execution flow is as follows:
after the microcontroller is switched to a second working state, the electric quantity of the storage battery pack is detected in real time, when the storage battery pack is enough to support the work of a load, the storage battery pack is directly switched to the first working state, when the storage battery pack is not enough to support the work of the load, the output voltage of the thin-film solar cell panel 3 and the output voltage of the wind driven generator are tracked through the MPPT controller, the output voltage is compared with the reference voltage, the duty ratios of the MOSFET field effect transistors of the two output power regulating and controlling circuits are respectively controlled, and the output power of the thin-film solar cell panel 3 and the output.
The execution flow circuit is configured as follows:
the wind driven generator is connected with the MOSFET field effect tube and the resistor in series through the rectifying circuit; the MPPT controller is connected with the output end node of the rectifying circuit and used for collecting the output voltage V of the wind driven generatorpv2；
The MPPT controller generates a reference voltage signal by using an MPPT algorithm, and then the reference voltage signal and a voltage signal V acquired by the current MPPT controllerpv2Comparing, transmitting the obtained result to a second PI controller, and obtaining the duty ratio d2Last duty cycle d2And then compared with the triangular wave to generate PWM to control the MOSFET field effect transistor.
MPPT controller according to duty ratio d1And d2After the MOSFET field effect transistor is controlled, the output voltage intensity of the thin-film solar cell panel 3 and the output voltage intensity of the wind driven generator are detected again, the output power of the thin-film solar cell panel 3 and the output power of the wind driven generator after adjustment are calculated, the output power before and after adjustment are compared, and if the output power after adjustment is larger than the output power before adjustment, the MPPT controller controls the PI controller II to continuously increase the duty ratio d1And d2(ii) a If the output power after adjustment is smaller than the output power before adjustment, the MPPT controller controls the second PI controller to continuously reduce the duty ratio d1And d2So as to further improve the output power of the thin-film solar cell panel 3 and the wind driven generator.
In the embodiment, the output power of the thin-film solar cell panel and/or the output power of the wind driven generator are controlled to be lower than the highest charging voltage of the storage battery by utilizing the output power regulating circuit of the thin-film solar cell panel and the output power regulating circuit of the wind driven generator, so that the wind driven generator and the thin-film solar cell panel can work in a state close to the maximum output power of the wind driven generator and the thin-film solar cell panel, the output power of the whole wind-solar hybrid power generation system is higher, the output power of the whole wind-solar hybrid power generation system can be.
The wind-solar complementary thin-film solar street lamp provided by the invention is described in detail, a specific example is applied in the description to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A wind-solar complementary thin-film solar street lamp comprises a lamp post and a lamp body, wherein the lamp body is arranged on one side of the lamp post, and the wind-solar complementary thin-film solar street lamp is characterized by further comprising a fixing frame, a storage battery pack, a thin-film solar panel, a wind driven generator, an MPPT (maximum power point tracking) controller and a microcontroller; wherein the content of the first and second substances,
the top of the lamp post is provided with the fixed frame;
the middle part of the fixed frame is provided with a wind driven generator, an input shaft of the wind driven generator is connected with a fan blade, and the fixed frame is provided with a frame positioned on the periphery of the fan blade;
the two sides of the top of the fixing frame are rotatably connected with the thin-film solar cell panels, and the thin-film solar cell panels are turned downwards to cover the frame and shield the fan blades; the thin-film solar cell panel is turned upwards to be in a horizontal state to the maximum extent, and the fan blade is exposed;
the microcontroller is connected with a motor for controlling the thin-film solar cell panel to turn over;
the MPPT controller tracks the output power of the thin-film solar cell panel and the output power of the wind driven generator and transmits the output power to the microcontroller, and the microcontroller sends a turning control instruction to the motor;
the MPPT controller tracks the output voltage of the thin-film solar panel and the wind driven generator and compares the output voltage with a reference voltage to control the duty ratio of the MOSFET.
2. The wind-solar hybrid thin-film solar street lamp according to claim 1, wherein the side edge of the thin-film solar panel is hinged to the fixing frame through a rotating shaft, and an output shaft of the motor is directly connected with the rotating shaft or is rotatably connected with the rotating shaft through a worm gear.
3. The wind-solar hybrid thin film solar street lamp according to claim 1, wherein the solar panel and the wind driven generator provide power to a load in real time, and the load comprises a monitoring camera.
4. The wind-solar hybrid thin-film solar street lamp according to claim 1, characterized in that the wind-solar hybrid thin-film solar street lamp comprises a first working state and a second working state;
in the first working state, the thin-film solar cell shields the fan blade and supplies power to the storage battery pack or the load;
the working state II is that the thin-film solar cell is turned upwards to expose the fan blade, and the solar cell panel and the wind driven generator jointly supply power to the storage battery pack or the load;
the MPPT controller tracks the output power of the thin-film solar cell panel and transmits the output power to the microcontroller to compare the storage capacity of the storage battery with the load working power, and if the output power is lower than the load working power, the microcontroller sends a turning control instruction to the motor to enter a working state II.
5. The wind-solar hybrid thin-film solar street lamp according to claim 4, wherein in the second working state, the microcontroller detects the storage capacity of the storage battery pack in real time, and when the requirement of the load working power is met, the microcontroller sends a turnover control instruction to the motor to enter the first working state.
6. The wind-solar hybrid thin-film solar street lamp according to claim 1, wherein the thin-film solar panel is connected in series with a MOSFET (metal-oxide-semiconductor field effect transistor) and a resistor through a diode, and the MOSFET FET is connected with the cathode of the diode; the MPPT controller is connected with the diode cathode node and collects the output voltage V of the thin-film solar cell panelpv1；
The MPPT controller generates a reference voltage signal by using an MPPT algorithm, and then the reference voltage signal and a voltage signal V acquired by the current MPPT controllerpv1Comparing, transmitting the obtained result to a first PI controller, and then obtaining a duty ratio d1Last duty cycle d1And then compared with the triangular wave to generate PWM to control the MOSFET field effect transistor.
7. The wind-solar hybrid thin film solar street lamp according to claim 6, wherein the first operating state further comprises the MPPT controller operating according to a duty cycle d1After the MOSFET field effect transistor is controlled, the output voltage intensity of the thin-film solar cell panel is detected again, the output power of the thin-film solar cell panel after adjustment is calculated, the output power before and after adjustment is compared, and if the output power after adjustment is larger than the output power before adjustment, the MPPT controller controls the PI controller to continuously increase the duty ratio d1(ii) a If the adjusted output power is smaller than the output power before adjustment, the MPPT controller controls the PI controller to continuously reduce the duty ratio d1。
8. The wind-solar hybrid thin-film solar street lamp according to claim 7, wherein the wind driven generator is connected in series with the MOSFET and the resistor through a rectifying circuit; the MPPT controller is connected with the output end node of the rectifying circuit and used for collecting the output voltage V of the wind driven generatorpv2；
The MPPT controller generates a reference voltage signal by using an MPPT algorithm, and then the reference voltage signal and a voltage signal V acquired by the current MPPT controllerpv2Comparing, transmitting the obtained result to a second PI controller, and obtaining the duty ratio d2Last duty cycle d2And then compared with the triangular wave to generate PWM to control the MOSFET field effect transistor.
9. The wind-solar hybrid thin-film solar street lamp according to claim 8, wherein the second operating state further comprises the MPPT controller operating according to a duty cycle d1And d2After the MOSFET field effect transistor is controlled, the output voltage intensity of the thin-film solar cell panel and the output voltage intensity of the wind driven generator are detected again, the output power of the thin-film solar cell panel and the output power of the wind driven generator after adjustment are obtained through calculation, the output power before and after adjustment is compared, and if the output power after adjustment is larger than the output power before adjustment, the MPPT controller controls the PI controller II to continuously increase the duty ratio d1And d2(ii) a If the adjusted output power is smaller than the output power before adjustment, the MPPT controller controls the second PI controller to continuously reduce the duty ratio d1And d2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110340385.6A CN113048431B (en) | 2021-03-30 | 2021-03-30 | Wind-solar complementary thin-film solar street lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110340385.6A CN113048431B (en) | 2021-03-30 | 2021-03-30 | Wind-solar complementary thin-film solar street lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113048431A true CN113048431A (en) | 2021-06-29 |
| CN113048431B CN113048431B (en) | 2022-02-11 |
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