CN107154669A - A kind of outdoor light storage LED high power density transform methods of wide scope input - Google Patents
A kind of outdoor light storage LED high power density transform methods of wide scope input Download PDFInfo
- Publication number
- CN107154669A CN107154669A CN201710430714.XA CN201710430714A CN107154669A CN 107154669 A CN107154669 A CN 107154669A CN 201710430714 A CN201710430714 A CN 201710430714A CN 107154669 A CN107154669 A CN 107154669A
- Authority
- CN
- China
- Prior art keywords
- led
- mppt
- battery
- boost
- constant current
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- 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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
LED high power density transform methods, including the live part with MPPT functions and LED constant current drive part are stored up the invention discloses a kind of outdoor light of wide scope input；By analysing in depth solar cell, battery and LED fundamental characteristics, devise based on topological bi-directional synchronization rectification DC DC converters based on Buck Boost types, during the forward direction operation of DC DC converters, charge loop uses Buck type topological structures, three stage charging methods being combined to battery progress MPPT, constant pressure, constant current；When DC DC converter inverted runnings, electric discharge loop uses Boost type topological structure, realizes the constant pressure output of LED, and with PWM dimming functions；Simultaneously using based on the improved control method of tradition disturbance observation, according to the I V characteristics of solar cell, each increment is switched to the step-length for actually approaching control voltage next time, frequently disturbed also to be reduced during preventing excessively control, component stable state.
Description
Technical field
The present invention relates to solar LED lighting technical field, the outdoor light storage LED Gao Gong of specially a kind of wide scope input
Rate density transform method.
Background technology
Perturbation observation method is one of most currently used MPPT algorithm, and its course of work is periodically disturbed sun energy battery
Output voltage (V+V), then contrasted with the power output before disturbance, such as performance number is being continuously increased, and means that disturbance
Direction is consistent with control direction, continue towards equidirectional (+V) change；If performance number is reducing on the contrary, just toward opposite direction
(—V) change, disturbance so repeatedly will export its maximum power value.
Perturbation observation method is to change its magnitude of voltage at regular intervals, and the control signal of its next step is by power output
The direction of change judges.Specific Adjusted Option is as follows:U, I represent last value, and corresponding power output is P,、
Represent currency,It is its power.When increasing relative reference voltage, there are two kinds of phenomenons:(1)P1>P represents change direction just
Really, system disturbance direction continues to keep constant；(2) P1<P represents that change direction is not right, and the perturbation direction of system next step will
Change.So repetitive cycling, stops disturbance when operating point is close to maximum power value.The topmost deficiency of perturbation observation method is
U step-lengths are fixed.IfU is too big, and the vibration of especially severe just occurs on maximum power point periphery, also has very big power to damage
Lose；If △ U are too small, it is necessary to which especially the long time can just trace into maximum power point, so as to being brought in real life
Greatly inconvenience.
The content of the invention
LED high power density transform methods are stored up it is an object of the invention to provide a kind of outdoor light of wide scope input, are adopted
Improved control method is observed with based on tradition disturbance, according to the I-V characteristic of solar cell, under each increment is switched to
The step-length of control voltage is once actually approached, is frequently disturbed also to be reduced during preventing excessively control, component stable state；Meanwhile,
There is simple in construction, the only a small amount of switching device of need and low-loss advantage, and battery two by the DC-DC converter of setting
The output at end has used LCL filter, can preferably reduce the ripple current and ripple voltage of battery side, to solve the above-mentioned back of the body
The problem of being proposed in scape technology.
To achieve the above object, the present invention provides following technical scheme：A kind of outdoor light storage LED Gao Gong of wide scope input
Rate density transform method, includes the live part and LED constant current drive part of MPPT functions, the live part of its MPPT function and
LED constant current drive part is controlled by the synchronous rectified DC-DC converter of the two-way main circuit design of Buck-Boost types and is based on
The improved PID control method of MPPT principles；Its two-way main circuit design is as follows：Including LED ends, PV ends, Battery ends, electric capacity
And its driving switch Q1, Q2, Q3, Q4, Q5 in series or in parallel with each other, and it is provided with 3 kinds of working methods：
（1）Buck is worked, and inductive current iL is always maintained at not working more than zero, Q1 work Q2, and Battery ends are flow to by PV ends,
IL is continuously increased when t=ton, and Q1 cut-offs, D2 afterflows work, Q2 no currents pass through；
（2）Boost is worked, and inductive current iL is always maintained at being less than zero, and LED ends, in ton to T, Q2 are flowed to by Battery ends
Work Q1 is not worked, and iL is continuously increased, when reaching T moment, and Q2 cut-offs are stopped, and D1 afterflows work, Q1 no currents pass through；
（3）Alternation, inductive current iL is positive and negative to be alternately present:At t0-t1 moment, Q1 ON operations, at t1-ton moment, Q1
Conducting has electric current to pass through simultaneously, D2 afterflows, and iL can constantly diminish and value is still more than zero；At the ton-T moment, Q2 is turned on and is had electricity
Stream flows through, and iL constantly rises but value is less than zero.
It is as follows that it is based on the improved PID control method of MPPT principles：
S1：Specified rate R is inputted, and R values are set as zero；
S2：Set the negative dp/du of the input quantity of PID controller, i.e. system deviation amount；
S3：The dutycycle of PID controller regulation DC-DC converter PWM ripples loads to change the output equivalent of photovoltaic cell, realizes
MPPT maximum power point tracking.
It is preferred that, the mode of operation of the two-way main circuit based on Buck-Boost types be provided with two kinds, i.e. decompression mode and
Boost mode；When its decompression mode is that energy flow to Battery by PV, power end is PV ends, and Q1 drivings, Q3, Q4 are opened, Q5
Close, constitute Buck reduction voltage circuits；Boost mode is when flowing to LED by Battery, power end is Battery, and now Q2 drives
Dynamic, Q3, Q5 are opened, and Q4 is closed, and constitute Boost circuit.
It is preferred that, the live parts of MPPT functions include MPPT charge modes, constant pressure charge mode, constant voltage floating charge pattern,
Standby mode, preparation discharge mode and preparation charge mode.
It is preferred that, LED constant current drive part includes first time period constant current drive pattern, second time period constant current driving mould
Formula and the 3rd period constant current drive pattern.
It is preferred that, during DC-DC converter forward direction operation, charge loop uses Buck type topological structures, and battery is carried out
The three stage charging methods that MPPT, constant pressure, constant current are combined；When DC-DC converter inverted running, electric discharge loop is used
Boost type topological structure, realizes the constant pressure output of LED, and with PWM dimming functions.
Compared with prior art, the beneficial effects of the invention are as follows：
The outdoor light storage LED high power density conversion dress design methods of this wide scope input, are changed using based on tradition disturbance observation
The control method entered, according to the I-V characteristic of solar cell, switchs to each increment actually approach control voltage next time
Step-length, to prevent excessively control, also reduce during component stable state and frequently disturb；Meanwhile, pass through the DC-DC converter of setting
With simple in construction, the only a small amount of switching device of need and low-loss advantage, and the output at battery two ends has used LCL filtering
Device, can preferably reduce the ripple current and ripple voltage of battery side, realize the constant pressure output of LED, and be adjusted with PWM
Light function.
Brief description of the drawings
Fig. 1 is programming flowchart of the invention；
Fig. 2 is based on the improved PID control schematic diagram of MPPT principles for the present invention；
Fig. 3 is the structured flowchart of PID control of the present invention；
Fig. 4 is that photovoltaic cell of the present invention exports P-U curves；
Fig. 5 is two-way One Buck-Boost converter body general principle figure of the invention；
Fig. 6 is the inductive current oscillogram under three kinds of working methods of One Buck-Boost converter body of the present invention；
Fig. 7 is photovoltaic array equivalent circuit diagram of the present invention；
Fig. 8 is photovoltaic array simulation model figure of the present invention；
Fig. 9 is that photovoltaic array of the present invention exports U-I performance diagrams；
Figure 10 is that photovoltaic array of the present invention exports U-P characteristic curves.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1-10 are referred to, the present invention provides a kind of technical scheme：A kind of outdoor light storage LED high powers of wide scope input
Density transform method, includes the live part and LED constant current drive part of MPPT functions, and the live part of MPPT functions includes
MPPT charge modes, constant pressure charge mode, constant voltage floating charge pattern, standby mode, preparation discharge mode and preparation charge mode；
MPPT charge modes are to work as to have certain irradiation level, and solar cell panel voltages output is more than certain value (12V systems 14V, 24V system
When 28V), if battery tension is less than constant pressure even charging voltage, controller can carry out MPPT tracking to solar panel, to storage
Battery is charged with peak power；Constant pressure charge mode is to work as to have certain irradiation level, when solar panel is normal, battery tension
Constant pressure even charging voltage is reached, controller can abandon MPPT tracking, and carry out constant pressure to battery and fill, to protect battery；
Constant voltage floating charge pattern is to work as to have certain irradiation level, and when solar panel is normal, battery tension reaches constant pressure even charging voltage, fills
Electric current is reduced to 0.5A, and controller can abandon constant pressure and fill, and carries out constant voltage floating charge to battery, to protect battery；
When standby mode is dusk, the irradiation level of light is more and more weaker, solar panels output voltage be less than certain value (12V systems correspondence 14V,
24V systems correspondence 28V) there is provided energy charged without normal direction battery, controller abandons charging, and enters standby mode；Prepare
Discharge mode is that less than certain value, (12V systems correspondence 6V, 24V systems correspondence 12V, user can set when solar cell panel voltages
Put this parameter), into discharge mode is prepared, 30s is confirmed, into constant current drive pattern；When preparing charge mode for dawn, illumination
It is increasingly stronger, when solar panel output voltage is more than certain value (12V systems correspondence 12V, 24V systems correspondence 24V), delay
After 30s, stop constant-current driving LED, into preparation charge mode；Its LED constant current drive part drives including first time period constant current
Dynamic model formula, the i.e. first time period into constant-current driving LED, LED drive current slowly change, and are finally reached first time period
Percentage driving current, second time period constant current drive pattern are i.e. after completing first time period constant current and driving, automatically into the
Two periods, LED luminance slowly changes, and is finally reached second time period percentage driving current, and the constant current of the 3rd period is driven
Dynamic model formula is i.e. after second time period constant current driving is completed, and automatically into the 3rd period, LED luminance slowly changes, finally
Reach the 3rd period percentage driving current；The live part and LED constant current drive part of its MPPT function are controlled by Buck-
The synchronous rectified DC-DC converter of the two-way main circuit design of Boost type and based on the improved PID control method of MPPT principles；
During DC-DC converter forward direction operation, charge loop uses Buck type topological structures, and MPPT, constant pressure, constant current phase are carried out to battery
With reference to three stage charging methods；When DC-DC converter inverted running, electric discharge loop uses Boost type topological structure, realizes
The constant pressure output of LED, and with PWM dimming functions, its two-way main circuit design is as follows：Including LED ends, PV ends, Battery
End, electric capacity and its driving switch Q1, Q2, Q3, Q4, Q5 in series or in parallel with each other, its mode of operation are provided with two kinds, that is, are depressured
Pattern and boost mode；When its decompression mode is that energy flow to Battery by PV, power end is PV ends, Q1 drivings, Q3, Q4
Open, Q5 is closed, constitute Buck reduction voltage circuits；Boost mode is that power end is Battery when flowing to LED by Battery,
Now Q2 is driven, and Q3, Q5 are opened, and Q4 is closed, and constitutes Boost circuit, and be provided with 3 kinds of working methods：
（1）Buck is worked, and inductive current iL is always maintained at not working more than zero, Q1 work Q2, and Battery ends are flow to by PV ends,
IL is continuously increased when t=ton, and Q1 cut-offs, D2 afterflows work, Q2 no currents pass through；
（2）Boost is worked, and inductive current iL is always maintained at being less than zero, and LED ends, in ton to T, Q2 are flowed to by Battery ends
Work Q1 is not worked, and iL is continuously increased, when reaching T moment, and Q2 cut-offs are stopped, and D1 afterflows work, Q1 no currents pass through；
（3）Alternation, inductive current iL is positive and negative to be alternately present:At t0-t1 moment, Q1 ON operations, at t1-ton moment, Q1
Conducting has electric current to pass through simultaneously, D2 afterflows, and iL can constantly diminish and value is still more than zero；At the ton-T moment, Q2 is turned on and is had electricity
Stream flows through, and iL constantly rises but value is less than zero.
It is as follows that it is based on the improved PID control method of MPPT principles：
From attached it can be seen from the figure that：The maximum power point of photovoltaic cell（MPP）, it is exactly the point that correspondence slope is zero on curve, and
And this sampling point is unique；In maximum power point both sides, the slope absolute value size of correspondence operating point, with present operating point from most
High-power distance is into positive correlation；Thus, it is possible to by the output of solar-energy photo-voltaic cell arrayFeed back to input,
And input specified rate R and be set as zero, by its system deviation amount, the i.e. negative input as PID controller；Thus PID control, energy
Enough dutycycles according to the current position on P-U curves in photovoltaic cell operating point, constantly regulation DC-DC converter PWM ripples
Size, to change the output equivalent load of photovoltaic cell, so that the output voltage of photovoltaic cell is adjusted, until photovoltaic cell output
Voltage power supply realizes MPPT maximum power point tracking at the corresponding voltage of maximum power point.
Embodiment one：
The mathematics physics model of solar cell：In reality, when connect the solar cell of load by illumination when, photoproduction electricity
Flow through overload, terminal voltage can be formed at load two ends, now the circuit course of work of solar cell can with shown in figure etc.
Circuit is imitated to represent；Solar cell, which is regarded as, in figure can produce the current source of stable photoelectric current（Light stability）；In figure, it is
The series resistance of solar cell, it is mainly by the bulk resistor of solar cell, solar cell surface resistance, solar cell
Electrode conductor resistance and electrode and the contact resistance on osmanthus surface are constituted, and are photovoltaic cell bleeder resistance, are also referred to as bridged resistance,
Caused by it is due to the unclean or internal defect of silicon chip edge；Total diffusion electricity that the forward current that diode flows through passes through knot
What stream and by-pass current were all to provide, remaining photogenerated current passes through, and load is exited into from solar cell；According to photovoltaic
The characteristic of array, its working method can be with the circuit shown in Fig. 7 come equivalent；
ISC represents the excitation current of photovoltaic array in Fig. 8, is together decided on by factors such as intensity of illumination, temperature, and intensity of illumination is got over
By force, ISC is bigger.IVD represents the dissufion current of photovoltaic array, and its big I is by formula（7）Try to achieve
(7)
Q in formula --- electron charge；
A --- invariant；
K --- Boltzmann constant.
I DOSaturation current of photovoltaic array when without illumination is represented, its big I is by formula（8）Try to achieve
(8)
A in formula --- photovoltaic module pn-junction area；
E g--- the band gap of material；
N V、N C--- valence band and effective density of states of conduction band；
N D、N A--- the density of donor impurity and acceptor impurity；
D p、D n--- the diffusion coefficient of hole and electronics；
、--- the minority carrier life time of hole and electronics.
, can be in the hope of load current according to Fig. 8 equivalent circuitI LFor
(2-3)
In formulaR S--- bypass resistance；
R sh--- bleeder electricity group.
Model in MATLAB/Simulink is set up according to the mathematical modeling and equivalent circuit of photovoltaic array as shown in Figure 8.
WhereinT CFor extraneous temperature,SFor Intensity of the sunlight, taken herein in MATLAB/Simulink, S=
500W/m2.Change the load value at photovoltaic array PV two ends, obtain the corresponding output voltages of PVUAnd electric currentIValue, will be above-mentioned
Multi-group data fitting can obtain U-I characteristic curves as shown in figure 9, U-P characteristic curves are as shown in Figure 10；Will be above-mentioned by host computer
Data write photovoltaic simulator, to simulate the output characteristics of photovoltaic array.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (5)
1. the outdoor light storage LED high power density transform methods of a kind of wide scope input, it is characterised in that including MPPT functions
Live part and LED constant current drive part, the live part and LED constant current drive part of its MPPT function are controlled by Buck-
The synchronous rectified DC-DC converter of the two-way main circuit design of Boost type and based on the improved PID control method of MPPT principles；
Its two-way main circuit design is as follows：Opened including LED ends, PV ends, Battery ends, electric capacity and its driving in series or in parallel with each other
Q1, Q2, Q3, Q4, Q5 are closed, and is provided with 3 kinds of working methods：
（1）Buck is worked, and inductive current iL is always maintained at not working more than zero, Q1 work Q2, and Battery ends are flow to by PV ends,
IL is continuously increased when t=ton, and Q1 cut-offs, D2 afterflows work, Q2 no currents pass through；
（2）Boost is worked, and inductive current iL is always maintained at being less than zero, and LED ends, in ton to T, Q2 are flowed to by Battery ends
Work Q1 is not worked, and iL is continuously increased, when reaching T moment, and Q2 cut-offs are stopped, and D1 afterflows work, Q1 no currents pass through；
（3）Alternation, inductive current iL is positive and negative to be alternately present:At t0-t1 moment, Q1 ON operations, at t1-ton moment, Q1
Conducting has electric current to pass through simultaneously, D2 afterflows, and iL can constantly diminish and value is still more than zero；At the ton-T moment, Q2 is turned on and is had electricity
Stream flows through, and iL constantly rises but value is less than zero；
It is as follows that it is based on the improved PID control method of MPPT principles：
S1：Specified rate R is inputted, and R values are set as zero；
S2：Set the negative dp/du of the input quantity of PID controller, i.e. system deviation amount；
S3：The dutycycle of PID controller regulation DC-DC converter PWM ripples loads to change the output equivalent of photovoltaic cell, realizes
MPPT maximum power point tracking.
2. a kind of outdoor light storage LED high power density transform methods of wide scope input according to claim 1, its feature
It is, the mode of operation of the two-way main circuit based on Buck-Boost types is provided with two kinds, i.e. decompression mode and boost mode；Its
When decompression mode is that energy flow to Battery by PV, power end is PV ends, and Q1 drivings, Q3, Q4 are opened, and Q5 is closed, composition
Buck reduction voltage circuits；Boost mode is when flowing to LED by Battery, power end is Battery, and now Q2 drives, Q3, Q5
Open, Q4 is closed, constitute Boost circuit.
3. a kind of outdoor light storage LED high power density transform methods of wide scope input according to claim 1, its feature
It is, the live part of MPPT functions includes MPPT charge modes, constant pressure charge mode, constant voltage floating charge pattern, standby mode, standard
Standby discharge mode and preparation charge mode.
4. a kind of outdoor light storage LED high power density transform methods of wide scope input according to claim 1, its feature
It is, when LED constant current drive part is including first time period constant current drive pattern, second time period constant current drive pattern and the 3rd
Between section constant current drive pattern.
5. a kind of outdoor light storage LED high power density transform methods of wide scope input according to claim 1, its feature
Be, DC-DC converter forward direction operation when, charge loop use Buck type topological structures, to battery carry out MPPT, constant pressure,
The three stage charging methods that constant current is combined；When DC-DC converter inverted running, electric discharge loop is using Boost type topology knot
Structure, realizes the constant pressure output of LED, and with PWM dimming functions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710430714.XA CN107154669A (en) | 2017-06-09 | 2017-06-09 | A kind of outdoor light storage LED high power density transform methods of wide scope input |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710430714.XA CN107154669A (en) | 2017-06-09 | 2017-06-09 | A kind of outdoor light storage LED high power density transform methods of wide scope input |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107154669A true CN107154669A (en) | 2017-09-12 |
Family
ID=59795915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710430714.XA Pending CN107154669A (en) | 2017-06-09 | 2017-06-09 | A kind of outdoor light storage LED high power density transform methods of wide scope input |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107154669A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109302063A (en) * | 2018-11-13 | 2019-02-01 | 上海电力学院 | Non-isolation type Buck-Boost DC converter with wide conversion ratio |
| CN110299755A (en) * | 2019-06-18 | 2019-10-01 | 深圳市振源电气有限公司 | A kind of intelligent solar charge control system and control method |
| CN110379361A (en) * | 2019-07-25 | 2019-10-25 | 苏州市职业大学 | The color LED dot matrix screen of photovoltaic power supply |
-
2017
- 2017-06-09 CN CN201710430714.XA patent/CN107154669A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109302063A (en) * | 2018-11-13 | 2019-02-01 | 上海电力学院 | Non-isolation type Buck-Boost DC converter with wide conversion ratio |
| CN110299755A (en) * | 2019-06-18 | 2019-10-01 | 深圳市振源电气有限公司 | A kind of intelligent solar charge control system and control method |
| CN110379361A (en) * | 2019-07-25 | 2019-10-25 | 苏州市职业大学 | The color LED dot matrix screen of photovoltaic power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102355165B (en) | Photovoltaic power generation device with global maximum power output function | |
| CN102780398B (en) | Intelligent component optimizer for solar photovoltaic cell panel and control method thereof | |
| AU2009329554B2 (en) | A photovoltaic system | |
| CN101938136A (en) | Photovoltaic component DC grid-connection controller | |
| CN109494793B (en) | Lithium-capacitor-based photovoltaic graded energy storage system with primary frequency modulation function | |
| CN201690377U (en) | Global maximum power point tracking device of photovoltaic power generation system | |
| CN107154669A (en) | A kind of outdoor light storage LED high power density transform methods of wide scope input | |
| CN103501020A (en) | Hybrid power supply system consisting of mains supply network and photovoltaic assembly and control method thereof | |
| Anandhi et al. | Application of DC-DC boost converter for solar powered traffic light with battery backup | |
| CN208015589U (en) | Electric power energy utilizes system | |
| CN202495780U (en) | Wide-voltage-input intelligent photovoltaic charging control system with MPPT function | |
| Jayashree et al. | Implementation of basic MPPT techniques for zeta converter | |
| CN206894319U (en) | A kind of outdoor light storage LED high power density transformation systems of wide scope input | |
| Jayannada et al. | Supercapacitor Assisted LED lighting (SCALED) for DC-micro grids | |
| CN205657469U (en) | Can realize independent photovoltaic intelligent control device of quick charge | |
| CN104467088A (en) | Intelligent solar charging system and automatic tracking control circuit thereof | |
| CN107968476A (en) | Variable photovoltaic module voltage is configured with storage battery in photovoltaic generation energy-storage system | |
| Raveendhra et al. | Design and small signal analysis of solar PV fed FPGA based Closed Loop control Bi-Directional DC-DC converter | |
| CN208352995U (en) | A kind of flexible intelligent charging assembly | |
| Shao et al. | Modeling and Control of Bi-directional Converter based on Battery Management in Photovoltaic System | |
| Yao et al. | Improvement of performance and flexibility for photovoltaic module using individual DC/DC converter | |
| Ramya et al. | A novel multi input DC–DC converter for integrated wind, PV renewable energy generated system | |
| Singh et al. | Design & implementation of solar fed intensity controlled streetlight | |
| Kumar et al. | Power Flow Management and DC bus Stabilization for SPV based Battery Energy Storage System | |
| CN220086995U (en) | Photovoltaic off-grid power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170912 |