CN107690210B - A method of improving LED driver utilization rate - Google Patents
A method of improving LED driver utilization rate Download PDFInfo
- Publication number
- CN107690210B CN107690210B CN201610629592.2A CN201610629592A CN107690210B CN 107690210 B CN107690210 B CN 107690210B CN 201610629592 A CN201610629592 A CN 201610629592A CN 107690210 B CN107690210 B CN 107690210B
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- led driver
- driver
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- parameter
- power
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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 are as follows: the output parameter of LED driver is to determine whether be more than that the parameter set guarantees that the power of driver is constant if it exceeds its setup parameter, adjusts the output parameter of LED driver.Compared with prior art, the present invention gives full play to the output power of LED driver, does not need there are nearly 20% power headroom, this make the cost of LED driver decline to a great extent save the cost, secondary energy-saving the advantages that.
Description
Technical field
The present invention relates to a kind of LED drivers, more particularly, to a kind of method for improving LED driver utilization rate.
Background technique
Most LED lamp bead is to be used in series currently on the market, and majority is driven using constant-current type driver, due to
The VF value of LED lamp bead has Multiple factors, and wherein temperature is an important factor, commonly reaches -3mv/ DEG C, under usual low temperature
VF value is 1.1 times under room temperature, is 0.9 times under room temperature under high temperature, such as single white 25 degree of lamp bead lower VF values are 3V, low
Lower temperature is 3.4V, is 2.6V under high temperature.This just selects driver to bring very big puzzlement, such as 100 series connection, room temperature to us
Lower VF is the lamp bead of 300V, 260V under high temperature, is 340V under low temperature, such as selects the drive galvanic current of 700mA, need under high temperature
260V*700mA=182W, if it is considered that low temperature 238W, still the power supply that at least needs that 238W is selected to export, otherwise in low temperature
It is lower to face the risk that cannot be lighted or flash.And the efficiency of the electric conversion light of usually LED lamp bead only has 10-20%, remaining
Part is converted into heat, therefore LED lamp bead usually works in the case of a high temperature, we select driver to adapt to low temperature in this way
Using more powerful driver can only being selected to cope with, after lamp bead is lighted, temperature can rise, therefore open to adapt to this again
Between low-temperature short-time when dynamic, and need to select a more powerful driver.The practical drive that need to only use 182W of above-mentioned example
It is dynamic, and actual selection needs the driving of 238W.The illumination in low temperature also will increase much simultaneously, and the illumination greater than design causes
Waste.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of raising LED drivers
The method of utilization rate.
The purpose of the present invention can be achieved through the following technical solutions:
A method of improving LED driver utilization rate, this method are as follows: the output parameter of LED driver to determine whether
More than the highest parameter of setting, if it exceeds its parameter, adjusts the output electric current of LED driver, guarantee driving to adapt to lamp bead
The power of device is constant.
Preferably, this method specifically includes the following steps:
1) judge that the output power of LED driver whether in the range of setting, if it is, executing step, otherwise, executes
Step 2)；
2) output parameter for adjusting LED driver, keeps driver input power constant, and execute step 3)；
3) judge LED driver output parameter whether be more than setting highest parameter, if it is, LED driver is defeated
Electric current out guarantees that the power of driver is constant；
4) LED driver maintains current output.
Preferably, its output power is obtained by the input parameter of real-time detection LED driver and output electric current.
Preferably, this method makes the power headroom of LED driver 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 output power of LED driver, does not need that there are nearly 20% function
Rate surplus, this makes the cost of LED driver decline to a great extent, save the cost improves driver utilization rate.Reduce simultaneously low
Illumination when warm, obtains secondary energy-saving.
Detailed description of the invention
Fig. 1 is a kind of implementation method flow chart of the invention.
A kind of specific 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, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
According to the parameter of LED lamp bead to determine whether being more than the highest parameter of driver, if it exceeds its parameter, adjustment
The electric current of LED driving, guarantees that the power of driver is constant, had not only been able to satisfy the low-temperature characteristics of VF lamp bead in this way, but also be able to satisfy specified
Light output, while actuator power is no more than its nominal rated power again.
As shown in Figure 1, the output and rated output by real-time detection LED driver compare, adjustment output electric current, electricity
Pressure guarantees rated output illumination.Driver output electric current, voltage, power and rated output compare, if under output electric current
Drop, output voltage cause output power lower than rated power close to setting output voltage.Output setting voltage is just raised, simultaneously
According to output power reduce output current setting value, guarantee that output power is no more than its rated value.The illumination guaranteed in this way
In constant situation, 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, lower than the VF value of setting, and output voltage setting value can be reduced, lift High Output Current, accomplish full temperature in this way
It is certain to spend lower illumination, and not rise for the VF voltage of low temperature, raises the surplus of the rated output power of driving simply.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection scope subject to.
Claims (4)
1. a kind of method for improving LED driver utilization rate, which is characterized in that this method are as follows: joined according to the output of LED driver
Number is to determine whether be more than the parameter of setting, if it exceeds its parameter, adjusts the output parameter of LED driver, to adapt to lamp bead
Guarantee that the power of driver is constant；
This method specifically includes the following steps:
1) output power of LED driver is judged whether in the range of setting, if it is, executing step 4) otherwise executes step
It is rapid 2)；
2) output parameter for adjusting LED driver, keeps driver input power constant, and execute step 3)；
3) judge whether the output parameter of LED driver is more than the highest parameter of setting, if it is, adjusting the defeated of LED driver
Parameter out guarantees that the power of driver is constant to adapt to lamp bead；
4) LED driver maintains current output.
2. a kind of method for improving LED driver utilization rate according to claim 1, which is characterized in that by examining in real time
Output voltage and the output electric current of LED driver are surveyed to obtain its output power.
3. a kind of method for improving LED driver utilization rate according to claim 1, which is characterized in that this method makes LED
The power headroom of driver is less than 20%.
4. a kind of method for improving LED driver utilization rate according to claim 3, which is characterized 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 CN107690210A (en) | 2018-02-13 |
| CN107690210B true 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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN107690210B (en) |
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 |
|---|---|
| CN107690210A (en) | 2018-02-13 |
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