CN210662654U - Solar street lamp grid-connected power generation device and solar street lamp system - Google Patents
Solar street lamp grid-connected power generation device and solar street lamp system Download PDFInfo
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- CN210662654U CN210662654U CN201921721113.5U CN201921721113U CN210662654U CN 210662654 U CN210662654 U CN 210662654U CN 201921721113 U CN201921721113 U CN 201921721113U CN 210662654 U CN210662654 U CN 210662654U
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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 utility model discloses a solar street lamp grid-connected power generation device and a solar street lamp system, wherein the solar street lamp comprises a lithium battery, a lamp post (1), a light-emitting module (2) and a photovoltaic module (3); the top of the lamp post is provided with a fan module (4) for generating electricity; the fan module is connected with a 24V direct current bus through the rectifier and the DC/DC module in sequence; the photovoltaic module is connected with a 24V direct current bus through a DC/DC module; the 24V direct current bus is connected with an alternating current power grid through an inversion grid-connected module; the 24V direct current bus is connected with the lithium battery through the DC/DC module; the DC/DC module and the inversion grid-connected module are both controlled by a controller; the controller is an MCU. The solar street lamp grid-connected power generation device and the solar street lamp system have the advantages of rich functions, easiness in implementation, energy conservation and environmental friendliness.
Description
Technical Field
The utility model belongs to the technical field of electron, a solar street lamp power generation facility and solar street lamp system that is incorporated into power networks is related to.
Background
In the existing solar street lamp, in areas with large illumination, generated electric energy supplies more than enough illumination, and redundant electric energy is wasted, so that the existing solar street lamp is not beneficial to further energy conservation and economic benefit generation.
In addition, although the existing solar street lamp can realize solar power supply, the existing solar street lamp has few functions and sometimes has insufficient power, and the requirement of illumination cannot be met.
Therefore, there is a need to design a street lamp capable of intelligently adjusting light according to the ambient light intensity state, so as to save energy consumption.
In addition, other clean energy sources are needed to supply power to the street lamps.
Therefore, it is necessary to design a solar street lamp grid-connected power generation device and a solar street lamp system.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a solar street lamp power generation facility and solar street lamp system of being incorporated into the power networks is provided, this solar street lamp power generation facility and solar street lamp system of being incorporated into the power networks compact structure, the function is abundant, practices thrift the energy consumption.
The technical solution of the utility model is as follows:
a solar street lamp grid-connected power generation device comprises a lithium battery, a lamp post (1), a light-emitting module (2) and a photovoltaic module (3); the top of the lamp post is provided with a fan module (4) for generating electricity;
the fan module is connected with a 24V direct current bus through the rectifier and the DC/DC module in sequence;
the photovoltaic module is connected with a 24V direct current bus through a DC/DC module;
the 24V direct current bus is connected with an alternating current power grid through an inversion grid-connected module;
the 24V direct current bus is connected with the lithium battery through the DC/DC module;
the DC/DC module and the inversion grid-connected module are both controlled by a controller;
the controller is an MCU.
The 24V direct current bus outputs 5V direct current voltage through the DC/DCO module to be supplied with power by the controller, and the DC/DCO conversion unit is a direct current/direct current conversion output unit.
The lamp post is vertically arranged; the light-emitting module is fixed on the lamp post through a transverse supporting rod (6); the light emitting module is an LED light emitting module;
the photovoltaic module is arranged at the upper end of the lamp post;
the photovoltaic module comprises a photovoltaic panel and an electric push rod for driving the photovoltaic panel to change the inclination direction;
a lithium battery and an MCU are arranged in the lamp post, the photovoltaic module charges the lithium battery, and the lithium battery supplies power for the LED light-emitting module; a light intensity sensor is arranged on the lamp post; the light intensity sensor is connected with the MCU; the MCU is connected with the LED light-emitting module through the driving circuit.
The rectifier comprises a rectifying circuit and a filter circuit; the rectification circuit is a three-phase bridge type uncontrollable rectification circuit or a single-phase bridge type uncontrollable rectification circuit.
The number of the fan modules is 3, and the 3 fan modules are connected with the top end of the lamp post through a connector (5); the 3 fan modules are arranged in a Y shape, and the connector can rotate relative to the lamp post; the MCU is connected with a wireless communication module; the MCU is in communication connection with the remote control platform through the wireless communication module; the wireless communication module is a 3G, 4G or 5G module.
The DC/DC conversion unit adopts a power electronic circuit formed by a fully-controlled switch device.
A solar street lamp system comprises a plurality of solar street lamp grid-connected power generation devices, and the plurality of solar street lamp grid-connected power generation devices output electric energy to an alternating current power grid.
Has the advantages that:
the utility model discloses a solar street lamp power generation facility and solar street lamp system that is incorporated into power networks has following characteristics:
(1) the method can realize clean electric energy grid-connected power generation, and contributes to national energy exploration.
(2) The DC voltage output of 5V and 24V is provided, and the use of a load is convenient.
(3) The wind energy and the solar energy are adopted for power generation, so that the power supply can be effectively guaranteed, the lighting requirement of the street lamp is met, the generated electric energy is fed back to a power grid when necessary, and the economic benefit is generated.
In addition, the street lamp has the following characteristics:
(1) the wind power generation module adopts 3 power generation modules, and can make full use of wind energy, so that the generated power is maximized.
(2) The street lamp brightness is adjusted based on the light intensity sensor, and energy consumption is saved.
(3) The remote control device is provided with a communication module, so that remote control is facilitated.
In a word, the solar street lamp grid-connected power generation device and the solar street lamp system have the advantages of rich functions, compact structure, energy conservation, environmental protection and suitability for popularization and implementation.
Drawings
FIG. 1 is a schematic view of the general structure of a solar street light;
FIG. 2 is a schematic view of an arrangement of 3 wind power generators;
FIG. 3 is a schematic view of an LED lamp head structure;
FIG. 4 is a schematic diagram of an amplification circuit;
FIG. 5 is a schematic diagram of an automatic dimming circuit;
FIG. 6 is a schematic diagram of the overall structure of a solar street lamp grid-connected power generation device;
FIG. 7 is a schematic diagram of a buck-boost chopper circuit for a DC/DC module;
FIG. 8 is a schematic diagram of a Buck Buck chopper circuit employed by the DC/DCO conversion unit;
fig. 9 is a schematic diagram of a charge/discharge bidirectional switching module.
Description of reference numerals: the solar photovoltaic lamp comprises a lamp post 1, a light emitting module 2, a photovoltaic module 3, a fan module 4, a connector 5 and a transverse supporting rod 6.
21-lamp bead, 41-generator and 42-fan blade.
Detailed Description
The invention will be described in further detail with reference to the following figures and specific embodiments:
example 1: as shown in fig. 1-3 and 6, a solar street lamp grid-connected power generation device comprises a lithium battery, a lamp post 1, a light emitting module 2 and a photovoltaic module 3; the top of the lamp post is provided with a fan module 4 for generating electricity;
the fan module is connected with a 24V direct current bus through the rectifier and the DC/DC module in sequence;
the photovoltaic module is connected with a 24V direct current bus through a DC/DC module;
the 24V direct current bus is connected with an alternating current power grid through an inversion grid-connected module;
the 24V direct current bus is connected with the lithium battery through the DC/DC module;
the DC/DC module and the inversion grid-connected module are both controlled by a controller;
the controller is an MCU.
The 24V direct current bus outputs 5V direct current voltage through the DC/DCO module to be supplied with power by the controller, and the DC/DCO conversion unit is a direct current/direct current conversion output unit.
The lamp post is vertically arranged; the light-emitting module is fixed on the lamp post through the transverse supporting rod 6; the light emitting module is an LED light emitting module;
the photovoltaic module is arranged at the upper end of the lamp post;
the photovoltaic module comprises a photovoltaic panel and an electric push rod for driving the photovoltaic panel to change the inclination direction;
a lithium battery and an MCU are arranged in the lamp post, the photovoltaic module charges the lithium battery, and the lithium battery supplies power for the LED light-emitting module; a light intensity sensor is arranged on the lamp post; the light intensity sensor is connected with the MCU; the MCU is connected with the LED light-emitting module through the driving circuit.
The rectifier comprises a rectifying circuit and a filter circuit; the rectification circuit is a three-phase bridge type uncontrollable rectification circuit or a single-phase bridge type uncontrollable rectification circuit.
The number of the fan modules is 3, and the 3 fan modules are connected with the top end of the lamp post through a connector (5); the 3 fan modules are arranged in a Y shape, and the connector can rotate relative to the lamp post; the MCU is connected with a wireless communication module; the MCU is in communication connection with the remote control platform through the wireless communication module; the wireless communication module is a 3G, 4G or 5G module.
The DC/DC conversion unit adopts a power electronic circuit formed by a fully-controlled switch device.
A solar street lamp system comprises a plurality of solar street lamp grid-connected power generation devices, and the plurality of solar street lamp grid-connected power generation devices output electric energy to an alternating current power grid.
As shown in fig. 4, the light intensity sensor is connected with the ADC end of the MCU through the adjustable amplification amplifier;
the amplifier with adjustable amplification factor comprises an operational amplifier U1 and a multi-way switch U2; the multi-way switch U2 is a one-out-of-four selector;
the output end Vin of the light intensity sensor is connected with the inverting input end of the operational amplifier U1 through a resistor R0; the non-inverting input end of the operational amplifier U1 is grounded through a resistor R06, the non-inverting input end of the operational amplifier U1 is also connected with 4 input channels of a four-in-one selector through 4 resistors R01-R04 respectively, the output channel of the four-in-one selector is connected with the output end Vout of the operational amplifier U1, and the Vout is connected with the ADC end of the MCU;
2 output ports of the MCU are respectively connected with channel selection ends A and B of the one-out-of-four selector;
the operational amplifier U1 employs an LM393 device.
Calculation formula of Vout and Vin:
vout ═ Vin, (Rx + R0)/R0; wherein Rx ═ R01, R02, R03, or R04; determining which resistance to select based on the gate terminal AB; and R01, R02, R03 and R04 are each different; preferred R04-5-R03-25-R02-100-R01; r01-5 × R0. can conveniently achieve span and precision switching.
As shown in fig. 5, the display screen is connected with the MCU, and the dimming circuit includes a LED string, a triode, a light intensity sensor Rx and an a/D converter; the triode is an NPN type triode; a knob switch is also arranged on the fixing frame of the display screen and is coaxially connected with the light intensity sensor Rx;
the light intensity sensor Rx and the first resistor R1 are connected in series to form a voltage division branch, one end of the voltage division branch is connected with the positive electrode Vcc of the power supply, and the other end of the voltage division branch is grounded; the connection point of the light intensity sensor Rx and the first resistor R1 is connected with the input end of the A/D converter; the output end of the A/D converter is connected with the data input port of the MCU;
the LED lamp string comprises a plurality of LED lamps which are connected in series; the anode of the LED lamp string is connected with the anode Vcc of the power supply; the negative electrode of the LED lamp string is connected with the C electrode of the triode, and the E electrode of the triode is grounded through a second resistor R2; the B pole of the triode is connected with the output end of the MCU. The power supply positive pole Vcc is 5V, and the A/D converter is an 8-bit serial output type converter.
The rectifier unit consists of 3 rectifiers in total, namely a rectifier 1, a rectifier 2 and a rectifier 3;
the DC/DC conversion unit includes 4 DC/DC modules including DC/DC1, DC/DC2, … … and DC/DCn, 4 corresponds to the number of power generation modules of the power generation unit, and the input voltage of each DC/DCi module (i 1, 2, … … and 4) is UdiOutput voltage of UdoiThe DC/DCi module adopts a buck-boost chopper circuit, as shown in FIG. 2. When the train speed is low, the output voltage of the generated voltage is lower than 24V through the uncontrollable rectifying circuit, a voltage boosting control mode is adopted, and when the train speed is increased, the output voltage of the generated voltage is higher than 24V through the uncontrollable rectifying circuit, a voltage reducing control mode is adopted. The basic operating principle of the circuit of fig. 7: when switching device QiWhen conducting, the input power UdiWarp QiTo the inductance LiThe capacitor C is used for storing energyiMaintaining output voltage UdoiConstant and supplying power to the subsequent stage circuit; when switching device QiWhen turned off, the inductance LiThe energy stored in the capacitor is released to a rear stage circuit and simultaneously supplied to a capacitor CiCharging and maintaining output voltage UdoiIs constant. Fully-controlled switching device Q of each DC/DC moduleiThe IGBT shown in FIG. 2 or POWER MOSFET can be used, and the controller performs pulse width modulation (PWM modulation) on the buck-boost chopper circuit to change the switching device Qithe voltage conversion is completed, so that the input direct-current voltage changing along with the speed of the train is converted into stable direct-current voltage output, and the output voltage is constant at 24V.
The controller controls the DC/DC conversion unit, the charge/discharge bidirectional switching module, the DC/DCO conversion unit and the SCR in the controller starting power supply unit, detects the charge/discharge current and the terminal voltage of the storage battery, and detects 24VdcCurrent on the dc bus.
The controller controls the DC/DC conversion unit, namely, controls the fully-controlled switching devices of the n DC/DC modules, simultaneously detects the output voltages of the n DC/DC modules, is used as the voltage feedback of the constant voltage control of each DC/DC module, ensures that the output voltage of each DC/DC module is constant at 24V, and simultaneously ensures 24VdcThe voltage of the dc bus is 24V.
The charge/discharge bidirectional switching module realizes the charge/discharge bidirectional switching function of the storage battery, when the system power generation is greater than the total power of the electric load of the train, the storage battery is charged, and when the system power generation is lower than the total power of the electric load of the train, the storage battery is discharged.
Fig. 9 shows a specific schematic diagram of the charge/discharge bidirectional switching module, in which the switching devices V3 and V4 are both controlled by an MCU (controller):
(1) switching device V4Cut-off, control switching device V3When the circuit operates in a voltage reduction chopping state, the 24V direct current voltage charges the storage battery;
(2) switching device V3Cut-off, control switching device V4When the circuit operates in a boosting chopping state, the storage battery discharges.
Switching device V in FIG. 93And V4For IGBT, POWER MOSFET may also be used.
Controller detects 24VdcAnd the current on the direct current bus calculates the power generation power of the whole self-powered power supply, and is used for determining the charging/discharging control of the storage battery, and the controller correspondingly controls the charging/discharging bidirectional switching module.
The controller detects the charge/discharge current and terminal voltage of the storage battery, is used for realizing constant voltage/constant current charge/discharge control and charge/discharge stop operation control of the storage battery, and estimates the electric energy stored in the storage battery.
The storage battery stores redundant electric energy for supplying power to the train when the train is stopped for a short time and supplying starting power to the controller when the train is started.
DC/DCO conversion unit and 24VdcThe DC buses are connected, the DC/DCO conversion unit adopts a Buck type Buck chopper circuit formed by fully-controlled switching devices, as shown in FIG. 8, the switching device V in FIG. 81And V2Either an IGBT or a POWERMOFET may be used, and the controller may be coupled to the switching device V1And V2And controlling to convert the 24V direct current voltage into 12V and 5V output.
Claims (7)
1. A grid-connected power generation device of a solar street lamp is characterized in that the solar street lamp comprises a lithium battery, a lamp post (1), a light-emitting module (2) and a photovoltaic module (3); the top of the lamp post is provided with a fan module (4) for generating electricity;
the fan module is connected with a 24V direct current bus through the rectifier and the DC/DC module in sequence;
the photovoltaic module is connected with a 24V direct current bus through a DC/DC module;
the 24V direct current bus is connected with an alternating current power grid through an inversion grid-connected module;
the 24V direct current bus is connected with the lithium battery through the DC/DC module;
the DC/DC module and the inversion grid-connected module are both controlled by a controller;
the controller is an MCU.
2. The grid-connected power generation device of the solar street lamp as claimed in claim 1, wherein the 24V DC bus outputs 5V DC voltage through the DC/DCO module, and the DC/DC conversion unit is a DC/DC conversion output unit.
3. The grid-connected solar street power generation device according to claim 1, wherein the lamp post is vertically arranged; the light-emitting module is fixed on the lamp post through a transverse supporting rod (6); the light emitting module is an LED light emitting module; the photovoltaic module is arranged at the upper end of the lamp post; the photovoltaic module comprises a photovoltaic panel and an electric push rod for driving the photovoltaic panel to change the inclination direction; a lithium battery and an MCU are arranged in the lamp post, the photovoltaic module charges the lithium battery, and the lithium battery supplies power for the LED light-emitting module; a light intensity sensor is arranged on the lamp post; the light intensity sensor is connected with the MCU; the MCU is connected with the LED light-emitting module through the driving circuit.
4. The grid-connected power generation device of the solar street lamp as claimed in claim 1, wherein the rectifier comprises a rectification circuit and a filter circuit; the rectification circuit is a three-phase bridge type uncontrollable rectification circuit or a single-phase bridge type uncontrollable rectification circuit.
5. The grid-connected power generation device of the solar street lamp according to claim 1, wherein the number of the fan modules is 3, and the 3 fan modules are connected with the top end of the lamp post through a connector (5); the 3 fan modules are arranged in a Y shape, and the connector can rotate relative to the lamp post; the MCU is connected with a wireless communication module; the MCU is in communication connection with the remote control platform through the wireless communication module; the wireless communication module is a 3G, 4G or 5G module.
6. The grid-connected solar street lamp power generation device according to any one of claims 1 to 5, wherein the DC/DC conversion unit is a power electronic circuit composed of fully-controlled switching devices.
7. A solar street light system comprising a plurality of solar street light grid-connected power plants as claimed in any of claims 1 to 6, each of the plurality of solar street light grid-connected power plants outputting electrical energy into an AC grid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921721113.5U CN210662654U (en) | 2019-10-15 | 2019-10-15 | Solar street lamp grid-connected power generation device and solar street lamp system |
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| CN201921721113.5U CN210662654U (en) | 2019-10-15 | 2019-10-15 | Solar street lamp grid-connected power generation device and solar street lamp system |
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| CN210662654U true CN210662654U (en) | 2020-06-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007623A (en) * | 2021-02-28 | 2021-06-22 | 长沙修恒信息科技有限公司 | Control method of modular lighting device based on Internet of things |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007623A (en) * | 2021-02-28 | 2021-06-22 | 长沙修恒信息科技有限公司 | Control method of modular lighting device based on Internet of things |
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