CN109121271A - One kind being based on MPPT photovoltaic xenon street lamp lighting system - Google Patents
One kind being based on MPPT photovoltaic xenon street lamp lighting system Download PDFInfo
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- CN109121271A CN109121271A CN201810957354.3A CN201810957354A CN109121271A CN 109121271 A CN109121271 A CN 109121271A CN 201810957354 A CN201810957354 A CN 201810957354A CN 109121271 A CN109121271 A CN 109121271A
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- circuit
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- street lamp
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
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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
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention relates to one kind to be based on MPPT photovoltaic xenon street lamp illumination system device, and system realizes solar charging/discharging control and constant current driving integration in same main circuit, using two-way DC converter circuit；Two-way DC converter circuit realizes that photovoltaic power generation automatically switches between the two with xenon output, i.e., when having illumination daytime, reversible transducer is switched to input pattern, carries out battery storage to solar cell power generation；When night or no light, reversible transducer is switched to output mode, and battery is discharged by DC converter, provides xenon street lamp illumination electric energy.
Description
Technical field
The present invention relates to one kind to be based on MPPT photovoltaic xenon street lamp lighting system.
Background technique
Conventional photovoltaic xenon street lamp lighting apparatus uses two independences of photovoltaic power generation energy-storage system and xenon driving circuit
The disadvantages of system in combination forms, and leads to complicated, at high cost installation, poor reliability.For this purpose, photovoltaic xenon street lamp designed by the present invention
Lighting system, is driven using photovoltaic power generation energy storage control and xenon constant current and shares circuit kit, and percentage of circuit utilization is promoted, reduced
Manufacturing cost.There is major and immediate significance to the promotion and popularization for promoting the illumination of energy conservation and environmental protection xenon street lamp.The present invention gives this
The hardware design of system and the concrete scheme of software design finally test designed sample experiments, have reached expected effect
Fruit.
Summary of the invention
One kind being based on MPPT photovoltaic xenon street lamp lighting system, and system realizes solar charging/discharging control in same main circuit
System and constant current driving integration, using two-way DC converter circuit；Two-way DC converter circuit realizes photovoltaic power generation and xenon
Gas output is automatically switched between the two, i.e., when having illumination daytime, reversible transducer is switched to input pattern, is sent out solar battery
Electricity carries out battery storage；When night or no light, reversible transducer is switched to output mode, and battery passes through DC converter
Electric discharge provides xenon street lamp illumination electric energy；The switching of single-chip microcontroller and its driving circuit control charging and discharging process in circuit, with
And charging voltage and xenon street lamp size of current；One group of charging voltage 13V of system battery, solar panels open-circuit voltage reach
21.5V；Charging is handled using decompression, and scheme is the DC/DC conversion circuit using Buck topological structure；Electric power storage tank discharge uses
The DC/DC conversion circuit of Boost provides electric energy for xenon driving；The main circuit of system is two-way DC/DC translation circuit, including
One inductance and multiple power MOS switch tubes, capacitor.This circuit is filled by two switch control Buck of MOS power tube Q4 and Q1
The switching of electricity and Boost electric discharge.
Wherein, the photovoltaic charged course of work of two-way DC/DC translation circuit are as follows: metal-oxide-semiconductor Q2, Q1 are disconnected, and form Buck
Structure DC/DC translation circuit；Single-chip microcontroller controls the switch of the metal-oxide-semiconductor Q4 of Buck circuit, certain voltage or electric current is exported, to storage
Battery charging；Photovoltaic solar panel can just obtain maximum photoelectric conversion efficiency only under a specific output voltage；By list
Piece machine controls the pwm signal duty ratio of MOS switch pipe Q4, adjusts the output voltage and input voltage of equivalent Buck translation circuit
Size.In accuracy rating appropriate, the MPPT control of charging link is realized.
This system uses the dedicated colloid storage battery of solar energy, one group of working output voltage DC12V, and xenon street lamp loads
Operating voltage range in DC36~48V, system battery discharge process carries out the change of D/C voltage using Boost translation circuit
It changes, MOS switch pipe Q2 connects the circuit Boost, and the electric energy of battery savings is to street lamp load discharge；It is adjusted and is switched by single-chip microcontroller
The pwm signal of pipe Q1 adjusts the size of output electric current xenon electric current, realizes and drives to the constant current that xenon loads；Control system
Single-chip microcontroller is one 10 continuous asymptotic expression analog-digital converters (ADC1), provides up to 5 multi-functional input channels and one
Inside multiplexing input channel；16 general purpose timers have 3 channels CAPCOM (IC, OC or PWM), and can meet this is
The control function requirement of system；For system using single-chip microcontroller as control core, peripheral circuit includes the letters such as data acquisition, PWM and I/O control
Number driving circuit；Intensity of illumination, temperature, the voltage/current parameter information of battery, photovoltaic array and xenon load, pass through
The ADC interface of STM8 is sent into corresponding driving circuit conversion, is AD converted.According to programmed algorithm, signal element output is controlled
Signal controls corresponding MOS switch pipe by driving circuit, realizes MPPT charging, xenon constant current-supplying；With IR remote controller with
Host is communicated, and running parameter needed for being arranged, host man-machine interface shows corresponding working state.System passes through to battery electricity
The acquisition control of the data such as stream, voltage also has to every defencive function such as accumulator super-charge, over-discharge.
Detailed description of the invention
Fig. 1 is the main circuit diagram provided by the invention based on MPPT photovoltaic xenon street lamp lighting system.
Fig. 2 is the control design case frame diagram provided by the invention based on MPPT photovoltaic xenon street lamp lighting system.
Specific embodiment
1. general solar energy xenon lighting apparatus, need to be independent by photovoltaic charge controller and xenon driving power two
A series of problems, such as product is integrated, is related to product type selection, matching.Control system designed by the present invention, by photovoltaic charged and xenon
Gas drive is moved two functions and is realized in same circuit.
Solar charging/discharging control and constant current driving integration are realized in same main circuit, need to be become using bidirectional, dc
Converter circuit.Two-way DC converter circuit realizes that photovoltaic power generation automatically switches between the two with xenon output, i.e., has light on daytime
According to when, reversible transducer is switched to input pattern, to solar cell power generation carry out battery storage；When night or no light,
Reversible transducer is switched to output mode, and battery is discharged by DC converter, provides xenon street lamp illumination electric energy.
The switching of single-chip microcontroller and its driving circuit control charging and discharging process and charging voltage and xenon road in circuit
Lamp current magnitude.
2. circuit design
2.1 circuit structure
One group of charging voltage 13V of this system battery or so, solar panels open-circuit voltage reach 21.5V, and charging needs to drop
Pressure processing, classical scheme are the DC/DC conversion circuits using Buck topological structure.Electric power storage tank discharge uses the DC/DC of Boost
Conversion circuit provides electric energy for xenon driving.This system charge and discharge and xenon constant current driving one, circuit is in Buck and Boost
It is the two-way DC/DC converter of Buck-Boost that basic framework is changed on the basis of circuit.
As shown in Figure 1, the main circuit of this system is two-way DC/DC translation circuit, opened by an inductance and multiple power MOS
The composition such as Guan Guan, capacitor.This circuit is cut by what two switch control Buck chargings of MOS power tube Q4 and Q1 and Boost were discharged
It changes.
2.2 working principle
2.2.1 MPPT maximum power point tracking charging technique
The photovoltaic charged course of work of two-way DC/DC translation circuit are as follows: metal-oxide-semiconductor Q2, Q1 are disconnected, and form Buck structure
DC/DC translation circuit.Single-chip microcontroller controls the switch of the metal-oxide-semiconductor Q4 of Buck circuit, certain voltage or electric current is exported, to battery
Charging.
It is (i.e. defeated just to obtain maximum photoelectric conversion efficiency only under a specific output voltage for photovoltaic solar panel
Power is maximum out).It is influenced by external light intensity and temperature, output Upmax is variation.This system is calculated by MPPT
Method is arranged suitable solar panels output voltage and guarantees that system has maximum photoelectricity as much as possible in practical accuracy rating
Transfer efficiency.
The relationship of power and output voltage of the solar panels under reference intensity of illumination, environment temperature
In extremum conditions, dP/dV=0 is obtained
Wherein DI, DV are the parameters about solar panels under reference light intensity, reference temperature environment, and Isc is that solar panel is short
Road electric current.Expression formula is a transcendental equation, and the voltage Vmax of corresponding maximum power point can be solved by Newton iteration method.By to repeatedly
Simplify processing for method, realize the manageable MPPT algorithm in low side single-chip microcontroller, MOS switch pipe Q4 is controlled by single-chip microcontroller
Pwm signal duty ratio, adjust the equivalent side Buck and change the output voltage of circuit and the size of input voltage.In precision appropriate
In range, the MPPT control of charging link is realized.
2.2.2 electric discharge driving load
This system, which uses, uses the dedicated colloid storage battery of solar energy, one group of working output voltage DC12V, and xenon street lamp
The operating voltage range of load is mostly in DC36~48V, so system battery discharge process, using Boost translation circuit into
The transformation of row D/C voltage, MOS switch pipe Q2 connect the circuit Boost, and the electric energy of battery savings is to street lamp load discharge.Pass through list
Piece machine adjusts the pwm signal of switching tube Q1, adjusts the size of output electric current xenon electric current, realizes and drives to the constant current that xenon loads
It is dynamic.
2.3 Control System Design
In view of some crucial control requirements of this system and manufacturing cost, control system is with ST Microelectronics
Single-chip microcontroller STM8S103F3 be control core.Relative to 8 now numerous single-chip microcontrollers, the cost performance of STM8 is very high:
One 10 continuous asymptotic expression analog-digital converters (ADC1) provide up to 5 multi-functional input channels and an internal multichannel
It is multiplexed input channel；16 general purpose timers have 3 channels CAPCOM (IC, OC or PWM), can meet the control of this system
Functional requirement.
For control design case frame as shown in Fig. 2, system is using STM8 single-chip microcontroller as control core, peripheral circuit includes that data are adopted
The driving circuit of the signals such as collection, PWM and I/O control.Intensity of illumination, temperature, the electricity of battery, photovoltaic array and xenon load
The parameter informations such as pressure/electric current are converted the ADC interface for being sent into STM8 by corresponding driving circuit, are AD converted.According to journey
Sequence algorithm controls signal element output signal, by driving circuit control corresponding MOS switch pipe (signal containing regular tap with
Pwm signal), realize MPPT charging, xenon constant current-supplying.It is communicated with IR remote controller with host, work ginseng needed for being arranged
Number, host man-machine interface show corresponding working state.
In addition, this system is by the acquisition control to data such as battery current, voltages, also have to accumulator super-charge,
The items defencive function such as over-discharge.
Conclusion
The present invention has carried out the high-power xenon mains lighting supply research of MPPT independent photovoltaic, using by simplified iteration
Method realizes MPPT control, is improved charge efficiency to a certain extent.And this system is low profile photovoltaic charging system and xenon
Gas lighting control system effectively combines, save the cost, reduces the volume of equipment, convenient for promoting.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding changes and modifications are made in design, and all these change and modification all should belong to the appended right of the present invention
It is required that protection scope.
Claims (3)
1. one kind is based on MPPT photovoltaic xenon street lamp lighting system, system realizes that solar charging/discharging controls in same main circuit
Integration is driven with constant current, using two-way DC converter circuit；Two-way DC converter circuit realizes photovoltaic power generation and xenon
Output is automatically switched between the two, i.e., when having illumination daytime, reversible transducer is switched to input pattern, to solar cell power generation
Carry out battery storage；When night or no light, reversible transducer is switched to output mode, and battery is put by DC converter
Electricity provides xenon street lamp illumination electric energy；The switching of single-chip microcontroller and its driving circuit control charging and discharging process in circuit, and
Charging voltage and xenon street lamp size of current；One group of charging voltage 13V of system battery, solar panels open-circuit voltage reach
21.5V；Charging is handled using decompression, and scheme is the DC/DC conversion circuit using Buck topological structure；Electric power storage tank discharge uses
The DC/DC conversion circuit of Boost provides electric energy for xenon driving；The main circuit of system is two-way DC/DC translation circuit, including
One inductance and multiple power MOS switch tubes, capacitor.This circuit is filled by two switch control Buck of MOS power tube Q4 and Q1
The switching of electricity and Boost electric discharge.
2. according to claim 1 be based on MPPT photovoltaic xenon street lamp illumination system device, wherein two-way DC/DC transformation
The photovoltaic charged course of work of circuit are as follows: metal-oxide-semiconductor Q2, Q1 are disconnected, and form Buck structure DC/DC translation circuit；Single-chip microcontroller control
The switch of the metal-oxide-semiconductor Q4 of Buck circuit processed exports certain voltage or electric current, charges to battery；Photovoltaic solar panel only has
Under a specific output voltage, maximum photoelectric conversion efficiency can be just obtained；By the PWM of single-chip microcontroller control MOS switch pipe Q4
Signal dutyfactor adjusts the output voltage of equivalent Buck translation circuit and the size of input voltage.In accuracy rating appropriate,
Realize the MPPT control of charging link.
3. according to claim 1 or 2 be based on MPPT photovoltaic xenon street lamp illumination system device, this system uses solar energy
Dedicated colloid storage battery, one group of working output voltage DC12V, and xenon street lamp load operating voltage range DC36~
48V, system battery discharge process carry out the transformation of D/C voltage using Boost translation circuit, and MOS switch pipe Q2 connects Boost
Circuit, the electric energy of battery savings is to street lamp load discharge；The pwm signal of switching tube Q1 is adjusted by single-chip microcontroller, adjusts output
The size of electric current xenon electric current is realized and is driven to the constant current that xenon loads；The single-chip microcontroller of control system be one 10 it is continuous gradually
Nearly formula analog-digital converter (ADC1) provides up to 5 multi-functional input channels and an internal multiplexing input channel；16
Position general purpose timer, has 3 channels CAPCOM (IC, OC or PWM), can meet the control function requirement of this system；System with
Single-chip microcontroller is control core, and peripheral circuit includes the driving circuit of the signals such as data acquisition, PWM and I/O control；Intensity of illumination,
Temperature, the voltage/current parameter information of battery, photovoltaic array and xenon load, is converted by corresponding driving circuit and is sent into
The ADC interface of STM8, is AD converted.According to programmed algorithm, signal element output signal is controlled, passes through driving circuit control pair
The MOS switch pipe answered realizes MPPT charging, xenon constant current-supplying；It is communicated with IR remote controller with host, work needed for being arranged
Make parameter, host man-machine interface shows corresponding working state.System passes through the acquisition control to data such as battery current, voltages
System also has to every defencive function such as accumulator super-charge, over-discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810957354.3A CN109121271A (en) | 2018-08-22 | 2018-08-22 | One kind being based on MPPT photovoltaic xenon street lamp lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810957354.3A CN109121271A (en) | 2018-08-22 | 2018-08-22 | One kind being based on MPPT photovoltaic xenon street lamp lighting system |
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| Publication Number | Publication Date |
|---|---|
| CN109121271A true CN109121271A (en) | 2019-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810957354.3A Withdrawn CN109121271A (en) | 2018-08-22 | 2018-08-22 | One kind being based on MPPT photovoltaic xenon street lamp lighting system |
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