CN104375556A - Solar MPPT constant current source - Google Patents
Solar MPPT constant current source Download PDFInfo
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- CN104375556A CN104375556A CN201410718587.XA CN201410718587A CN104375556A CN 104375556 A CN104375556 A CN 104375556A CN 201410718587 A CN201410718587 A CN 201410718587A CN 104375556 A CN104375556 A CN 104375556A
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- constant current
- current source
- control module
- module
- mppt
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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
- 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
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Abstract
The invention relates to a solar MPPT constant current source. The solar MPPT constant current source comprises a PV battery module (U1), an MPPT control module (U2), a storage battery (U3), an output control module (U4) and a constant current source module (U5); the output end of the PV battery module (U1) is connected with the input end of the MPPT control module (U2), the output end of the MPPT control module (U2) is connected with the input end of the storage battery (U3), the output control module (U4) is connected between the output end of the storage battery (U3) and the input end of the constant current source module (U5) in series, solar energy is converted into electric energy through the PV battery module (U1), the electric energy generated by PV batteries is adjusted by the MPPT control module (U2) to be input into the storage battery (U3), and the electric energy in the storage battery (U3) is output to the constant current source module (U5) through the output control module (U4).
Description
Technical field
The present invention relates to a kind of constant current source, particularly relate to a kind of sun power MPPT constant current source.
Background technology
The full name of MPPT constant current source is " MPPT maximum power point tracking " (Maximum Power Point Tracking) sun power constant current source, it can detect the output voltage of solar panel in real time, and follow the trail of the real-time output power of solar panel, solar panel can be exported with maximum generated output, thus improve generating efficiency.Consisting of application system, as LED illumination lamp, the area of solar panel can be reduced, thus reduce the cost of LED illumination lamp.
Summary of the invention
The invention provides a kind of sun power MPPT constant current source, can be applicable to any employing sun power as in the system of the energy, thus improve the utilization factor of solar panel.
The present invention is by the following technical solutions: sun power MPPT constant current source, comprise PV photovoltaic battery module, MPPT control module, accumulator, output control module and constant current source module, the output terminal of described PV photovoltaic battery module is connected with the input end of MPPT control module, the output terminal of described MPPT control module is connected to the input end of accumulator, described output control module is connected between the output terminal of accumulator and the input end of constant current source module, sun power is converted to electric energy by PV photovoltaic battery module, be input in accumulator after the adjustment of photovoltaic cell electricity by MPPT control module, electric energy in accumulator is then outputted in constant current source module by output control module.
Described MPPT control module is made up of two BUCK circuit and SM72295MA driving chip, and SM72295MA driving chip has carried out the maximum output power point tracking to PV photovoltaic battery module by the high-power MOS tube controlled in two BUCK circuit.
Described constant current source module is made up of BOOST booster circuit.
Compared with prior art, the invention has the beneficial effects as follows: can maximal efficiency utilize photovoltaic battery panel electricity energy; Adopt and form MPPT control module by two BUCK circuit and SM72295MA driving chip, decrease the quantity of components and parts, improve the reliability of circuit.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Embodiment 1
Sun power MPPT constant current source as shown in Figure 1, it is characterized in that: comprise PV photovoltaic battery module U1, MPPT control module U2, accumulator U3, output control module U4 and constant current source module U5, the output terminal of described PV photovoltaic battery module U1 is connected with the input end of MPPT control module U2, the output terminal of described MPPT control module U2 is connected to the input end of battery module U3, described output control module U4 is connected between the output terminal of accumulator U3 and the input end of constant current source module U5, sun power in sunshine is converted to electric energy by PV photovoltaic battery module U1, be input to after the adjustment of photovoltaic cell electricity by MPPT control module U2 in accumulator U3, electric energy in accumulator U3 is then outputted in constant current source module U5 by output control module U4.
Embodiment 2
The present embodiment adds following structure on the basis of embodiment 1: described MPPT control module U2 is made up of two BUCK circuit and SM72295MA driving chip, under the condition that the output voltage of PV photovoltaic battery module U1 is basicly stable, SM72295MA driving chip controls the dutycycle of four high-power MOSFET tubes in two BUCK circuit by the boostrap circuit in chip, the average current being filled with accumulator U3 is changed with this, simultaneously, the output voltage of PV photovoltaic battery module U1 also will change thereupon, SM72295MA driving chip is by measuring the output power of PV photovoltaic battery module U1 and the change of output voltage before and after disturbance, to determine the adjustment direction of next cycle dutycycle, when adjustment direction is correct, solar panel output power increases, the lower cycle will continue to adjust in the same direction, otherwise, adjustment in the other direction, so, repeatedly carry out adjusting to make the output of PV photovoltaic electric plate module U1 reach maximum power point.
In the present embodiment, adopt two BUCK circuit to charge to accumulator U3, the working time of four high-power MOSFET tubes is half period, and average current changing value is only the half of single BUCK circuit, and thermal value obviously reduces, and improves the reliability of circuit.
Embodiment 3
The present embodiment adds following structure on the basis of embodiment 1: described constant current source module U5 is made up of BOOST booster circuit and six unidirectional current output ports.
Be embodiments of the invention as mentioned above.The present invention is not limited to above-mentioned embodiment, and anyone should learn the structure change made under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.
Claims (3)
1. sun power MPPT constant current source, it is characterized in that: comprise PV photovoltaic battery module, MPPT control module, accumulator, output control module and constant current source module, the output terminal of described PV photovoltaic battery module is connected with the input end of MPPT control module, the output terminal of described MPPT control module is connected to the input end of accumulator, described output control module is connected between the output terminal of accumulator and the input end of constant current source module, sun power in sunshine is converted to electric energy by PV photovoltaic battery module, be input in accumulator after the adjustment of photovoltaic cell electricity by MPPT control module, electric energy in accumulator then outputs in constant current source module by output control module, six road constant current sources are exported by constant current source module.
2. sun power MPPT constant source flowing system according to claim 1, it is characterized in that: described MPPT control module is made up of two BUCK circuit and SM72295MA driving chip, SM72295MA driving chip has carried out the maximum output power point tracking to PV photovoltaic battery module by the high-power MOS tube controlled in two BUCK circuit.
3. sun power MPPT constant current source according to claim 1, is characterized in that: described constant current source module is made up of BOOST booster circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410718587.XA CN104375556A (en) | 2014-12-03 | 2014-12-03 | Solar MPPT constant current source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410718587.XA CN104375556A (en) | 2014-12-03 | 2014-12-03 | Solar MPPT constant current source |
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| CN104375556A true CN104375556A (en) | 2015-02-25 |
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| CN201410718587.XA Pending CN104375556A (en) | 2014-12-03 | 2014-12-03 | Solar MPPT constant current source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106981882A (en) * | 2017-03-13 | 2017-07-25 | 厦门科华恒盛股份有限公司 | A kind of photovoltaic generating system MPPT perturbation motion methods |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063891A (en) * | 2006-04-28 | 2007-10-31 | 上海森昌电气科技有限公司 | Device for tracking maximal power point of Solar cell and tracking method thereof |
| US20110266993A1 (en) * | 2008-11-10 | 2011-11-03 | Himangshu Rai Vaish | Systems and methods for solar based battery charging |
| CN202095151U (en) * | 2011-06-09 | 2011-12-28 | 刘振雪 | Solar high-power generation and illumination system |
| CN204256583U (en) * | 2014-12-03 | 2015-04-08 | 北京恒德阳光光电科技有限公司 | Sun power MPPT constant current source |
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2014
- 2014-12-03 CN CN201410718587.XA patent/CN104375556A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063891A (en) * | 2006-04-28 | 2007-10-31 | 上海森昌电气科技有限公司 | Device for tracking maximal power point of Solar cell and tracking method thereof |
| US20110266993A1 (en) * | 2008-11-10 | 2011-11-03 | Himangshu Rai Vaish | Systems and methods for solar based battery charging |
| CN202095151U (en) * | 2011-06-09 | 2011-12-28 | 刘振雪 | Solar high-power generation and illumination system |
| CN204256583U (en) * | 2014-12-03 | 2015-04-08 | 北京恒德阳光光电科技有限公司 | Sun power MPPT constant current source |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106981882A (en) * | 2017-03-13 | 2017-07-25 | 厦门科华恒盛股份有限公司 | A kind of photovoltaic generating system MPPT perturbation motion methods |
| CN106981882B (en) * | 2017-03-13 | 2019-11-29 | 科华恒盛股份有限公司 | A kind of photovoltaic generating system MPPT perturbation motion method |
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Application publication date: 20150225 |