CN203537625U - Solar semiconductor illumination system - Google Patents
Solar semiconductor illumination system Download PDFInfo
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- CN203537625U CN203537625U CN201320668147.9U CN201320668147U CN203537625U CN 203537625 U CN203537625 U CN 203537625U CN 201320668147 U CN201320668147 U CN 201320668147U CN 203537625 U CN203537625 U CN 203537625U
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Abstract
The utility model discloses a solar semiconductor illumination system. The system comprises a main circuit and a control circuit. The main circuit comprises a solar cell, a DC-DC converter, a battery, an LED drive circuit and an LED lamp bank. The control circuit comprises an MPPT control circuit and an LED drive control circuit. The LED drive circuit comprises an inductor L1, an inductor L2, a capacitor C, a diode D and an MOS tube Q1. The MPPT control circuit comprises a detection circuit, a DSP and a PWM drive circuit. The LED drive control circuit is a CUK converter based on an OCC. The system is advantaged by being high in integrated level and good in stability.
Description
Technical field
The utility model relates to a kind of solar energy and semiconductor illuminator.
Background technology
Along with the day by day serious and oil price of day by day the improving of scientific and technological level, energy crisis rises steadily, conventional energy resource no longer adapts to social economy's fast development, and development and utilization new forms of energy are significant.Since 2005, the annual growth of world solar markets is 23%, and the same period oil annual growth only have 1.8%, differ 10 times more than, and coal, oil and uranium etc. have brought as fuel the serious environmental pollution that is difficult to overcome.World's photovoltaic industry fast development, from eighties of last century to the beginning of this century photovoltaic generation from solving special dimension power supply, turn to a kind of important supplement as conventional energy resource gradually, this progress is particularly evident in developed country.Solar energy is on the earth to be the most also the most clean energy the most directly,, and the radiant energy that reaches earth surface every day approximates the energy of 2.7 hundreds of millions barrels of oil, can be described as inexhaustible, nexhaustible.Variously utilize the solar energy electronic production development of solar energy development very fast, such as: solar water heater, Solar lamp, solar water pump, solar traffic light, solar energy dehumidifier/air-conditioning system etc., these products have demonstrated huge market potential and vitality.Semiconductor lighting (Light Emitting Diode) is a kind of light emitting semiconductor device that can be visible ray by electric energy conversion, relies on that positive and negative charge in material is compound to be come luminously, has the advantages such as efficient, energy-conservation, life-span length, environmental protection.Along with environmental protection concept deeply and the Olympic stadiums adopted a lot of solar illuminating systems, the solar illumination apparatus of environmental protection has become one of new highlight that solar energy development utilizes.Photovoltaic illumination is 21 century semiconductor technology breakthrough and development key, it is as the strategic technology of national development novel illumination, be to march toward optical semiconductor power technology as the important entrance of other devices such as light transmission, light sensing, laser and optical storage, this has become 21 century trend of the times can not keep out situation.This is low to the efficient energy-saving of further its system of raising, high power factor, response fast, cost simple in structure, long-life and stablize the performance such as anti-interference and brought new challenge, makes the aspects such as Control System Design and device work performance have higher requirement.And there is many defects in traditional design, traditional solar photovoltaic MPPT controls prior art and boosts and the method such as ACMC control as Linear Control, the charge pump determining voltage-tracing method, intermittent scanning etc. and existing semiconductor lighting and drive, due to its system energy consumption is large, efficiency is low, power factor is little, current fluctuation is large and anti-interference strong, the cost high life is short etc., can not meet job requirement.Native system has been done and has been furtherd investigate and obtained corresponding realization the performances such as low cost, low-power consumption, high efficiency, fast-response, strong stability and high intelligent automation of raising control system.
There is many defects in existing design (referring to Fig. 1-2), cost is high, the large efficiency of energy consumption is low, current fluctuation is large and anti-interference not strong etc., can not meet job requirement, as drive circuit adopts inductor current signal detection ring and multiplier, cause complex structure, circuit cost high, and the nonlinear distortion of multiplier has increased the harmonic content of system power greatly.At solar photovoltaic MPPT, control that prior art is as not high in ubiquitous efficiency in determining voltage-tracing method, intermittent scanning, disturbance observation etc., the intelligence problems such as the low and life of storage battery of degree is short automatically,
Therefore, be necessary to design a kind of novel solar energy and semiconductor illuminator and control method thereof.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of solar energy and semiconductor illuminator, and this solar energy and semiconductor illuminator has the advantages such as integrated level is high, good stability.
The technical solution of utility model is as follows:
A solar energy and semiconductor illuminator, is characterized in that, comprises main circuit and control circuit;
Main circuit comprises solar cell, DC-DC converter, battery, LED drive circuit and LED lamp group;
Solar cell is that battery charges by DC-DC converter; Battery is by LED drive circuit driving LED lamp group;
Control circuit comprises MPPT control circuit and LED Drive and Control Circuit;
[MPPT control circuit is hardware circuit, and for driving the work of DC-DC converter, LED Drive and Control Circuit is for driving LED drive circuit works; ]
LED drive circuit comprises inductance L 1 and L2, capacitor C, diode D and metal-oxide-semiconductor Q1; The positive pole of battery connects the positive pole of capacitor C by inductance L 1; The negative pole of capacitor C connects the negative pole of LED lamp group through inductance L 2; The positive pole of LED lamp group connects the negative pole of battery;
Metal-oxide-semiconductor Q1 is N channel power MOS pipe; The D utmost point of metal-oxide-semiconductor Q1 and the S utmost point are connected respectively the Anode and battery negative pole of capacitor C; The G utmost point of metal-oxide-semiconductor Q1 connects the output of LED Drive and Control Circuit; The positive pole of diode D and negative pole connect respectively the negative pole of capacitor C and the negative pole of battery;
MPPT control circuit comprises testing circuit, DSP and PWM drive circuit; Testing circuit is used for gathering cell voltage; The output of testing circuit is connected with the A/D translation interface of DSP, and the PWM output channel of DSP connects the input of PWM drive circuit; PWM drive circuit provides trigger impulse for DC-DC converter;
LED Drive and Control Circuit is the CUK converter based on OCC.
Described LED Drive and Control Circuit comprises rest-set flip-flop, error amplifier, integrator and comparator;
The input signal of error amplifier is feedback voltage signal V
fwith reference voltage V
referror amount; The output signal V of error amplifier
man input as integrator; The non-signal of Q that another input signal of integrator is rest-set flip-flop; The output signal V of integrator
intconnect an input of comparator; Another input termination current signal i of comparator;
The R end of the output termination rest-set flip-flop of comparator, the S termination clock signal of rest-set flip-flop; The G utmost point of the Q termination metal-oxide-semiconductor Q1 of rest-set flip-flop.
Integrator and comparator are hardware module.
Adopt reset integrator herein, the low and high level of the non-end of Q is controlled the reset switch of integrator, and (integrator zero clearing resets during as output high level.
In main circuit, also comprise a RC antihunt circuit (Damping-network) with Capacitance parallel connection.
Beneficial effect:
The utility model proposes a kind of solar energy and semiconductor illuminator, this system is to take the high efficiency smart that High Performance DSP technical network is core, the solar lighting control system of high performance-price ratio, realized MPPT[" MPPT maximum power point tracking " (Maximum Power Point Tracking)] system dynamic monitoring and storage battery energy intelligent management, meet the stable operation of solar illuminating system under different operating state and accurately switch, relatively its systematic function and utilization ratio etc. improve greatly with conventional photovoltaic device.Corresponding experimental result also shows that this work system has intelligent and high-efficiency, stabilizing energy-saving etc.
The serial advantages such as semiconductor lighting drive circuit has adopted New O CC feed-forward technique to control high-efficiency high-power constant-current drive circuit, and efficiency is high, power is large, stable performance, and the LED work safety life-span is long.Native system has the performances such as low cost, low-power consumption, high efficiency, fast-response, strong stability, and has obtained checking by correlation theory and experiment.
Core of the present utility model is that this system is to using high efficiency smart, the high performance-price ratio MPPT dynamic monitoring system of High Performance DSP technical network as core.And this system is for adopting the high-efficiency high-power drive system of New O CC feed-forward technique.
The utility model can extensive use indoor and outdoor high or low power illumination, and can normally operation under adverse circumstances, this product is drive part electrical work (as TV, electric fan etc.) effectively reposefully also.With conventional photovoltaic device comparison, it has the advantages such as better high efficiency, stability, intelligent, energy-conserving and environment-protective and long service life.
Accompanying drawing explanation
Fig. 1 is traditional solar photovoltaic semiconductor lighting schematic diagram;
Fig. 2 is the traditional LED drive principle figure based on ACMC;
Fig. 3 is the solar photovoltaic MPPT schematic diagram that DSP controls;
Fig. 4 is the schematic diagram that OCC technology drives semiconductor lighting;
Fig. 5 is the feedfoward control improvement strategy schematic diagram of the CUK converter based on OCC.
Embodiment
Below with reference to the drawings and specific embodiments, the utility model is described in further details:
Embodiment 1:
Referring to Fig. 3-5, a kind of solar energy and semiconductor illuminator, comprises main circuit and control circuit;
Main circuit comprises solar cell, DC-DC converter, battery, LED drive circuit and LED lamp group;
Solar cell is that battery charges by DC-DC converter; Battery is by LED drive circuit driving LED lamp group;
Control circuit comprises MPPT control circuit and LED Drive and Control Circuit;
[MPPT control circuit is used for driving the work of DC-DC converter, and LED Drive and Control Circuit is for driving LED drive circuit works; ]
LED drive circuit comprises inductance L 1 and L2, capacitor C, diode D and metal-oxide-semiconductor Q1; The positive pole of battery connects the positive pole of capacitor C by inductance L 1; The negative pole of capacitor C connects the negative pole of LED lamp group through inductance L 2; The positive pole of LED lamp group connects the negative pole of battery;
Metal-oxide-semiconductor Q1 is N channel power MOS pipe; The D utmost point of metal-oxide-semiconductor Q1 and the S utmost point are connected respectively the Anode and battery negative pole of capacitor C; The G utmost point of metal-oxide-semiconductor Q1 connects the output of LED Drive and Control Circuit; The positive pole of diode D and negative pole connect respectively the negative pole of capacitor C and the negative pole of battery;
MPPT control circuit comprises testing circuit, DSP and PWM drive circuit; Testing circuit is used for gathering cell voltage; The output of testing circuit is connected with the A/D translation interface of DSP, and the PWM output channel of DSP connects the input of PWM drive circuit; PWM drive circuit provides trigger impulse for DC-DC converter;
LED Drive and Control Circuit is the CUK converter based on OCC.
Described LED Drive and Control Circuit comprises rest-set flip-flop, error amplifier, integrator and comparator; The input signal of error amplifier is feedback voltage signal V
fwith reference voltage V
referror amount; The output signal V of error amplifier
man input as integrator; The non-signal of Q that another input signal of integrator is rest-set flip-flop; The output signal V of integrator
intconnect an input of comparator; Another input termination current signal i of comparator, i=k* (i
r+ v
rk
b), the R end of the output termination rest-set flip-flop of comparator, the S termination clock signal of rest-set flip-flop; The G utmost point of the Q termination metal-oxide-semiconductor Q1 of rest-set flip-flop.
In main circuit, also comprise a RC antihunt circuit (Damping-network) with Capacitance parallel connection.
The implementation of OCC feedfoward control
The control strategy figure that the CUK converter of OCC technology control [occ is that monocycle system is controlled] obtains, [CUK converter: a kind of switching mode voltage stabilizing circuit being formed by DC-DC switch converters (chopper), rectifier filter circuit and feedback control circuit.] as shown in Figure 6.The feedback voltage signal V that output voltage obtains after sampling
fwith reference voltage V
refsend into error amplifier, the output V of error amplifier simultaneously
mafter integrator, obtain integrated signal V
int, with current signal i
rafter deliver to rest-set flip-flop, two output signals of trigger are used for driving power switching tube and reset integrator.As shown in Figure 6.
When clock pulse rising edge arrives, rest-set flip-flop is set, switching tube conducting, the output V of integrator to error amplifier
mcarry out integration, as integration output and current signal i
rwhile equating, comparator output high level, switching tube turn-offs, and rest-set flip-flop resets, until next clock pulse arrives, repeats the above-mentioned course of work.Due to the filter dynamic characteristic of (filter refers in master control system the filter forming as RLC of following because of needs), OCC controls output voltage still can be disturbed, anti-disturbance ability a little less than, and the power factor of whole converter can decline when underloading, for these problems, the utility model spy has proposed the feedfoward control improvement strategy of the CUK converter based on OCC, as shown in Figure 7.
The multiplication factor of error amplifier is when Circuits System tracking, to determine as required again.Q is non-to be connected with integrator, participates in integrator work.
Different from traditional OCC technology, the sampled voltage is here taken from whole system output voltage, and traditional OCC technology sampled voltage is taken from the voltage on fly-wheel diode.Though sampling is controlled with voltage-type, some is similar, is newly provided with integrating circuit, and output end voltage error signal was carried out effective integral and complete modulation in the single cycle, and this is typical nonlinear Control.The tradition OCC technology feedback quantity of only sampling, and increased the feedback of an input here, can input, output be modulated simultaneously, this plays the effect of working along both lines, and has further improved system rejection to disturbance ability.
The feedfoward control improvement strategy of the CUK converter based on OCC adopts voltage feedforward control, input voltage V
rthrough conversion [i
f=v
rk
b] after obtain synchronizing current i
fwith input current signal i
r(V as shown in Figure 3,
rwith i
rbe respectively voltage and the electric current of DC--DC converter output terminal, the storage battery of Fig. 4 main circuit in parallel below, also be input voltage and the electric current of Fig. 4 main circuit initiating terminal, emphasis has comprised because extraneous factor changes causes its output voltage current signal fluctuation segment pulse such as (as accumulator voltage)) jointly send into comparator with integrator output signal again after being added, through rest-set flip-flop, produce switching tube and drive signal.By converter, to input voltage, sampling is transformed to current signal i to this control strategy
f, this current signal has reflected the disturbance situation of input voltage effectively, the adjusting by the single cycle just can suppress the disturbance of input voltage.If input voltage v
rthere is an impulse hits, the current signal i obtaining after converter
ralso have a pulse ripple, output voltage also can become greatly, feedback voltage signal V
fhave a fluctuation, will increase like this integration slope of integrator, reduce the time of integration, duty ratio also can reduce, and voltage obtains stable output, guarantees a good antijamming capability.
Claims (2)
1. a solar energy and semiconductor illuminator, is characterized in that, comprises main circuit and control circuit;
Main circuit comprises solar cell, DC-DC converter, battery, LED drive circuit and LED lamp group;
Solar cell is that battery charges by DC-DC converter; Battery is by LED drive circuit driving LED lamp group;
Control circuit comprises MPPT control circuit and LED Drive and Control Circuit;
LED drive circuit comprises inductance L 1 and L2, capacitor C, diode D and metal-oxide-semiconductor Q1; The positive pole of battery connects the positive pole of capacitor C by inductance L 1; The negative pole of capacitor C connects the negative pole of LED lamp group through inductance L 2; The positive pole of LED lamp group connects the negative pole of battery;
Metal-oxide-semiconductor Q1 is N channel power MOS pipe; The D utmost point of metal-oxide-semiconductor Q1 and the S utmost point are connected respectively the Anode and battery negative pole of capacitor C; The G utmost point of metal-oxide-semiconductor Q1 connects the output of LED Drive and Control Circuit; The positive pole of diode D and negative pole connect respectively the negative pole of capacitor C and the negative pole of battery;
MPPT control circuit comprises testing circuit, DSP and PWM drive circuit; Testing circuit is used for gathering cell voltage; The output of testing circuit is connected with the A/D translation interface of DSP, and the PWM output channel of DSP connects the input of PWM drive circuit; PWM drive circuit provides trigger impulse for DC-DC converter;
LED Drive and Control Circuit is the CUK converter based on OCC.
2. solar energy and semiconductor illuminator according to claim 1, is characterized in that, described LED Drive and Control Circuit comprises rest-set flip-flop, error amplifier, integrator and comparator;
The input signal of error amplifier is feedback voltage signal V
fwith reference voltage V
referror amount; The output signal V of error amplifier
man input as integrator; The non-signal of Q that another input signal of integrator is rest-set flip-flop; The output signal V of integrator
intconnect an input of comparator; Another input termination current signal i of comparator;
The R end of the output termination rest-set flip-flop of comparator, the S termination clock signal of rest-set flip-flop; The G utmost point of the Q termination metal-oxide-semiconductor Q1 of rest-set flip-flop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320668147.9U CN203537625U (en) | 2013-10-28 | 2013-10-28 | Solar semiconductor illumination system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320668147.9U CN203537625U (en) | 2013-10-28 | 2013-10-28 | Solar semiconductor illumination system |
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| Publication Number | Publication Date |
|---|---|
| CN203537625U true CN203537625U (en) | 2014-04-09 |
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ID=50423791
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320668147.9U Expired - Fee Related CN203537625U (en) | 2013-10-28 | 2013-10-28 | Solar semiconductor illumination system |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103763812A (en) * | 2013-10-28 | 2014-04-30 | 湖南信息科学职业学院 | DSP-based solar semiconductor illumination system and control method thereof |
| CN103957640A (en) * | 2014-05-12 | 2014-07-30 | 矽力杰半导体技术(杭州)有限公司 | LED driving circuit and control method thereof |
-
2013
- 2013-10-28 CN CN201320668147.9U patent/CN203537625U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103763812A (en) * | 2013-10-28 | 2014-04-30 | 湖南信息科学职业学院 | DSP-based solar semiconductor illumination system and control method thereof |
| CN103957640A (en) * | 2014-05-12 | 2014-07-30 | 矽力杰半导体技术(杭州)有限公司 | LED driving circuit and control method thereof |
| CN103957640B (en) * | 2014-05-12 | 2017-05-31 | 矽力杰半导体技术(杭州)有限公司 | LED drive circuit and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20141028 |
|
| EXPY | Termination of patent right or utility model |