CN107690210A - A kind of method for improving LED driver utilization rate - Google Patents
A kind of method for improving LED driver utilization rate Download PDFInfo
- Publication number
- CN107690210A CN107690210A CN201610629592.2A CN201610629592A CN107690210A CN 107690210 A CN107690210 A CN 107690210A CN 201610629592 A CN201610629592 A CN 201610629592A CN 107690210 A CN107690210 A CN 107690210A
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- led driver
- output
- driver
- power
- parameter
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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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
Abstract
The present invention relates to a kind of method for improving LED driver utilization rate, this method is：The output parameter of LED driver come judge whether more than setting parameter, if it exceeds its setup parameter, adjusts the output parameter of LED driver, ensures that the power of driver is constant.Compared with prior art, the present invention gives full play to the power output of LED driver, it is not necessary to leave nearly 20% power headroom, this make the cost of LED driver decline to a great extent cost-effective, secondary energy-saving the advantages that.
Description
Technical field
The present invention relates to a kind of LED driver, more particularly, to a kind of method for improving LED driver utilization rate.
Background technology
Most LED lamp bead is to be used in series in the market, and majority is driven using constant-current type driver, due to
The VF values of LED lamp bead have Multiple factors, and wherein temperature is an important factor, commonly reach -3mv/ DEG C, under usual low temperature
VF values are 1.1 times under normal temperature, are 0.9 times under normal temperature under high temperature, such as the single white lower VF value of 25 degree of lamp bead is 3V, low
It is 3.4V that temperature is lower, is 2.6V under high temperature.This just selects driver to bring very big puzzlement, such as 100 series connection, normal temperature to us
Lower VF is 300V lamp bead, 260V under high temperature, be 340V under low temperature, such as selection 700mA drive galvanic current, is needed under high temperature
260V*700mA=182W, if it is considered that low temperature 238W, still at least need to select the power supply of 238W outputs, otherwise in low temperature
It is lower to face the risk that can not be lighted or flash.And the efficiency of the generally electric conversion light of LED lamp bead only has 10-20%, remaining
Part is converted into heat, therefore LED lamp bead typically each works in the case of a high temperature, and so we select driver to adapt to low temperature
Using more powerful driver can only being selected to tackle, after lamp bead is lighted, temperature can rise, therefore be opened to adapt to this again
Between low-temperature short-time when dynamic, and need to select a more powerful driver.The actual drive that need to only use 182W of above-mentioned example
It is dynamic, and actual selection needs 238W driving.The illumination in low temperature can also increase much simultaneously, and the illumination more than design causes
Waste.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind improves LED driver
The method of utilization rate.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of method for improving LED driver utilization rate, this method are：The output parameter of LED driver judges whether
More than the highest parameter of setting, if it exceeds its parameter, adjusts the output current of LED driver, ensures driving to adapt to lamp bead
The power of device is constant.
Preferably, this method specifically includes following steps：
1) power output of LED driver is judged whether in the range of setting, if it is, performing step, otherwise, is performed
Step 2)
2) output parameter of LED driver is adjusted, keeps driver input power constant, and perform step 3)；
3) judge whether the output parameter of LED driver exceedes the highest parameter of setting, if it is, LED driver is defeated
Go out electric current, ensure that the power of driver is constant；
4) LED driver maintains current output.
Preferably, its power output is obtained by detecting input parameter and the output current of LED driver in real time.
Preferably, this method makes the power headroom of LED driver be less than 20%.
Preferably, this method makes the power of LED driver with completely.
Compared with prior art, the present invention gives full play to the power output of LED driver, it is not necessary to leaves nearly 20% work(
Rate surplus, this makes the cost of LED driver decline to a great extent, cost-effective, that is, improves driver utilization rate.Reduce simultaneously low
Illumination when warm, obtains secondary energy-saving.
Brief description of the drawings
Fig. 1 is a kind of implementation method flow chart of the present invention.
A kind of embodiment of implementation method
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
Highest parameter more than driver is judged whether according to the parameter of LED lamp bead, if it exceeds its parameter, adjustment
The electric current of LED drivings, ensures that the power of driver is constant, can so meet the low-temperature characteristics of VF lamp beads, and can meets specified
Light output, while actuator power is no more than its nominal rated power again.
As shown in figure 1, compared by the output and rated output for detecting LED driver in real time, adjustment output current, electricity
Pressure, ensure rated output illumination.Driver output current, voltage, power and rated output compare, if under output current
Drop, output voltage cause power output lower than rated power close to setting output voltage.Output setting voltage is just raised, simultaneously
According to power output reduce output current setting value, ensure power output be no more than its rated value.The illumination so ensured
In the case of constant, VF when having adapted to low temperature rises.Due to being its output parameter of Real-time Feedback, after the rising of lamp plate temperature, VF
When voltage declines, less than the VF values of setting, output voltage setting value can be reduced again, raises output current, so accomplishes full temperature
The lower illumination of degree is certain, and not rise for the VF voltages of low temperature, raises the surplus of the rated output power of driving simply.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, various equivalent modifications can be readily occurred in or replaced
Change, these modifications or substitutions should be all included within the scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain be defined.
Claims (5)
- A kind of 1. method for improving LED driver utilization rate, it is characterised in that this method is：The output parameter of LED driver comes Judge whether the parameter more than setting, if it exceeds its parameter, adjusts the output parameter of LED driver, ensure to adapt to lamp bead The power of driver is constant.
- 2. a kind of method for improving LED driver utilization rate according to claim 1, it is characterised in that this method is specific Comprise the following steps：1) power output of LED driver is judged whether in the range of setting, if it is, performing step, otherwise, performs step 2)2) output parameter of LED driver is adjusted, keeps driver input power constant, and perform step 3)；3) judge whether the output parameter of LED driver exceedes the highest parameter of setting, if it is, the output ginseng of LED driver Number, ensure that the power of driver is constant to adapt to lamp bead；4) LED driver maintains current output.
- 3. a kind of method for improving LED driver utilization rate according to claim 2, it is characterised in that by examining in real time The output voltage and output current for surveying LED driver obtain its power output.
- 4. a kind of method for improving LED driver utilization rate according to claim 1, it is characterised in that this method makes LED The power headroom of driver is less than 20%.
- 5. a kind of method for improving LED driver utilization rate according to claim 4, it is characterised in that this method makes LED The power of driver is with completely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610629592.2A CN107690210B (en) | 2016-08-03 | 2016-08-03 | A method of improving LED driver utilization rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610629592.2A CN107690210B (en) | 2016-08-03 | 2016-08-03 | A method of improving LED driver utilization rate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107690210A true CN107690210A (en) | 2018-02-13 |
| CN107690210B CN107690210B (en) | 2019-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610629592.2A Active CN107690210B (en) | 2016-08-03 | 2016-08-03 | A method of improving LED driver utilization rate |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101827473A (en) * | 2009-03-03 | 2010-09-08 | 黄秉钧 | Constant power drive control method for luminous element |
| CN101929622A (en) * | 2009-06-19 | 2010-12-29 | 鸿富锦精密工业（深圳）有限公司 | LED illuminating system and control method thereof |
| CN102510646A (en) * | 2011-10-26 | 2012-06-20 | 扬州恒格节能科技有限公司 | Remote intelligent monitoring system for street lamp |
| CN103582258A (en) * | 2013-11-03 | 2014-02-12 | 胡军 | LED driving device and method |
-
2016
- 2016-08-03 CN CN201610629592.2A patent/CN107690210B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101827473A (en) * | 2009-03-03 | 2010-09-08 | 黄秉钧 | Constant power drive control method for luminous element |
| CN101929622A (en) * | 2009-06-19 | 2010-12-29 | 鸿富锦精密工业（深圳）有限公司 | LED illuminating system and control method thereof |
| CN102510646A (en) * | 2011-10-26 | 2012-06-20 | 扬州恒格节能科技有限公司 | Remote intelligent monitoring system for street lamp |
| CN103582258A (en) * | 2013-11-03 | 2014-02-12 | 胡军 | LED driving device and method |
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| Publication number | Publication date |
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| CN107690210B (en) | 2019-11-19 |
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