CN203387750U - Over-voltage protection efficient LED street lamp power supply - Google Patents
Over-voltage protection efficient LED street lamp power supply Download PDFInfo
- Publication number
- CN203387750U CN203387750U CN201320534954.1U CN201320534954U CN203387750U CN 203387750 U CN203387750 U CN 203387750U CN 201320534954 U CN201320534954 U CN 201320534954U CN 203387750 U CN203387750 U CN 203387750U
- Authority
- CN
- China
- Prior art keywords
- voltage
- circuit
- power supply
- overvoltage
- over
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses an over-voltage protection efficient LED street lamp power supply which comprises an input rectification filter circuit, a PFC active power factor correction circuit and a high voltage DC-DC switching circuit module. The over-voltage protection efficient LED street lamp power supply is characterized by further comprising a surge voltage detection circuit and a surge voltage control circuit. An over-voltage detection unit and an over-voltage control unit are arranged in the high voltage DC-DC switching circuit module. The surge voltage detection circuit and the surge voltage control circuit are connected with the PFC active power factor correction circuit. An over-voltage detection circuit and an over-voltage control circuit are connected with a switching circuit of the high voltage DC-DC switching circuit module. The over-voltage protection efficient LED street lamp power supply not only can improve the power supply using efficiency, but also has the voltage detection function. The front end of a power supply filters clutter input by an AC, instantaneous surge voltage generated by outdoor lightning stroke induced voltage or large load opening and closing and voltage clutter is removed, the residual clutter and induced voltage are detected, and therefore subsequent LED lamps cannot be damaged by surge impact.
Description
[technical field]
The utility model relates to field of power supplies, relates in particular to overvoltage efficient LED streetlamp power supply.
[background technology]
Because LED(Chinese is called for short light-emitting diode) there are energy-conserving and environment-protective, the many merits such as the life-span is long, photoelectric efficiency is high (light efficiency has reached 100LM/W at present), antidetonation, make it more and more be widely used in road and street lighting, square, the outdoor lightings such as stadium and parking factory, and due to the LED road and the street lighting operational environment quite severe, should experience the burning sun insolation, expose to wind and rain, also will realize in conjunction with the characteristics of the easy light modulation of LED controlling.Energy-conserving and environment-protective are emphasized in the LED illumination of the 4th generation new light sources of employing at present more, and this just requires the LED road lamp power supply not only to want high efficiency, High Power Factor, and require high reliability; Should under high temperature (+70 ℃), can work, (40 ℃) can start and can work again at low temperatures; Can also prevent because of thunderbolt, or large load opens, turn-off, the surge voltage that voltage clutter and so on produces is burnt power supply and LED's, but also the band over-voltage protection function, and misoperation protected, and whole system is not damaged.
Now general LED road lamp power supply just input surge voltage is limited, overtension this by the piezo-resistance pressure limiting, blown fuse, and be not with overvoltage protection to control function, thus occur that an engineering large tracts of land burns the situation of LED street lamp.Due to a kind of overvoltage protection efficient LED streetlamp power supply that adopts this scheme to form; can be absorbed and be protected the input surge voltage; can carry out overvoltage detection and control to input voltage again; this has improved the reliability of LED road lamp power supply greatly; can protect better the LED lamp when running into various catastrophic failure, fault is recovered again normal operation after removing.
[summary of the invention]
The utility model is unstable for solving above-mentioned LED road lamp power supply quality, and reliability is hanged down problem and a kind of high efficiency LED power supply of high reliability that has is provided.
The technical scheme that the utility model addresses the above problem is: a kind of overvoltage protection efficient LED streetlamp power supply, comprise input rectifying filter circuit, PFC APFC, high pressure DC-DC change-over circuit module, it is characterized in that, also comprising surge voltage testing circuit, surge voltage control circuit, described high pressure DC-DC change-over circuit inside modules is provided with overvoltage detection unit, overvoltage control unit; Described surge voltage detection, control circuit are connected with the PFC APFC, and described overvoltage detection, control circuit are connected with the change-over circuit of high pressure DC-DC modular converter.
Described high pressure DC-DC change-over circuit module section comprises overvoltage detection unit, the overvoltage control unit, the power transfer control unit, power conversion unit, the power output circuit unit, overvoltage detection unit connects the overvoltage control unit, then, by power transfer control unit and power conversion unit, finally is connected to the power stage unit.
Described surge voltage detects, control circuit is comprised of the first resistance R 15, the second resistance R 16, surge detecting element U3, triode Q5, and the PC that described triode Q5 connects high pressure DC-DC change-over circuit controls pin.
The beneficial effects of the utility model are: the purpose of this utility model is to provide a kind of high reliability LED road lamp power supply that overvoltage is controlled that has, can to because of the thunderbolt, or large various loads unlatchings, to turn-off, the various surge voltages that voltage clutter and so on produces are analyzed and are cut and remove; According to the fault to different with think that misoperation protects prompting, and carry out immediately defencive function.Thereby the reliability that greatly improves the LED street lamp reduces maintenance rate.
[accompanying drawing explanation]
Fig. 1 is the utility model block diagram;
Fig. 2 the utility model circuit theory diagrams.
[embodiment]
In order to make the purpose of this utility model, technical scheme and advantage clearer, the block diagram below in conjunction with nextpage, be further elaborated to the utility model.
Described overvoltage efficient LED streetlamp power supply comprises that this part of input rectifying filter circuit 101(is by EMI common and different mode filter circuit, rectification circuit, filter circuit), PFC APFC 103, high pressure DC-DC change-over circuit module 104 inside are provided with overvoltage detection unit 401, overvoltage control unit 402, described surge voltage detection, control circuit are connected with PFC APFC 103, and described overvoltage detection, control circuit are connected with the change-over circuit of high pressure DC-DC modular converter 104.
Described high pressure DC-DC change-over circuit module section comprises overvoltage detection unit 401, overvoltage control unit 402, power transfer control unit 403, power conversion unit 404, power output circuit unit 406, overvoltage detection unit 401 connects overvoltage control unit 402, then, by power transfer control unit 403 and power conversion unit 404, finally is connected to power stage unit 406.
When surge testing circuit 102 detects the voltage overtension, the voltage signal of generation is made the contrast judgement to overvoltage control circuit 105, makes immediately corresponding control measure; PFC APFC 103 will be the 400V direct current by PFC APFC 103 circuit conversion after inputting the direct current of civil power after rectifying and wave-filtering, realize power factor emendation function simultaneously.
Its mesohigh DC-DC change-over circuit inside modules also comprises overvoltage detection unit, the overvoltage control unit, power conversion unit, power transfer control unit and composition. high pressure DC-DC change-over circuit module will change the 400V direct current of coming through 103 parts and change stable low-voltage direct output into, thereby to connect LED lamp load power supply.
Described surge voltage detects control circuit by the first resistance R 15 and the second resistance R 16, surge detecting element U3, triode Q5 forms, voltage process after rectification is by the first resistance R 15, the second resistance R 16 and surge detecting element U3, when input surge voltage and overvoltage inflow, surge detecting element U3 detects the protection voltage that voltage exceeds U3, surge detecting element U3 moment is transformed into low impedance state from high impedance, the electric current of second resistance R 16 of flowing through increases, the voltage produced in the second resistance R 16 upper ends, reach triode Q5 base-on voltage, now the collector electrode of triode Q5 with launch very low impedance state, the PC of high pressure DC-DC change-over circuit module control pin voltage is unloaded and put, now high pressure DC-DC change-over circuit module quits work, no-output voltage, the LED lamp load connect does not work.
If extraneous surge voltage or overvoltage disappear, voltage process after rectification is by the first resistance R 15 and the 2nd R16 and surge detecting element U3, surge detecting element U3 detects the protection voltage that voltage is less than U3, surge detecting element U3 moment is transformed into low impedance state from high impedance, the electric current of second resistance R 16 of flowing through reduces, the voltage produced in the second resistance R 16 upper ends, do not reach triode Q5 base-on voltage, now the collector electrode of triode Q5 with launch very high impedance status, the PC of high pressure DC-DC change-over circuit module can not be controlled to pin voltage drags down, now high pressure DC-DC change-over circuit module recovery operating state, output voltage is normally exported, the LED lamp load connect recovers illuminating state.
Overvoltage detection unit 401 is contained in high pressure DC-DC change-over circuit module described herein 104 inside, overvoltage control unit 402, when extraneous surge voltage and overvoltage, inductance and diode D2 by PFC APFC 103, voltage on capacitor C 5 and C10, this voltage is added in input IN+ pin and the IN-pin of high pressure DC-DC change-over circuit module simultaneously, the overvoltage detection unit of high pressure DC-DC change-over circuit inside modules will detect input voltage and internal reference voltage-contrast, produce signal during higher than reference voltage to the overvoltage control unit, by the overvoltage control unit, the control switch circuit control unit is controlled, stop the control signal to power conversion unit, power conversion unit quits work, therefore power output circuit unit Non voltage output, high pressure DC-DC change-over circuit module Non voltage output now, the LED lamp load connect does not work.
Overvoltage detection unit 401 is contained in high pressure DC-DC change-over circuit module 104 inside that this paper tells, overvoltage control unit 402, when the external world during without surge voltage and overvoltage, inductance and diode D2 by PFC APFC 103, voltage on capacitor C 5 and C10, this voltage is added in input IN+ pin and the IN-pin of high pressure DC-DC change-over circuit module simultaneously, the overvoltage detection unit of high pressure DC-DC change-over circuit inside modules will detect input voltage and internal reference voltage-contrast, do not produce signal during lower than reference voltage, now the overvoltage control unit is not controlled the control switch circuit control unit, the control signal of recovery to power conversion unit, power conversion unit produces low-voltage, control and obtain regulated output voltage through power output circuit unit loop, now high pressure DC-DC change-over circuit module has Voltage-output, the LED lamp load connect recovers illuminating state.
The related overvoltage protection efficient LED streetlamp power supply of the utility model has input surge voltage Check processing function, and the voltage of front input power is detected, and detects without after overvoltage, just allows high pressure DC-DC change-over circuit output voltage; Such as when artificial mistake is connected on two live wires of three-phase electricity by the input of LED street lamp; this LED road lamp power supply system can detect overvoltage; the overvoltage control circuit pins module; Non voltage output now. thereby protection LED road lamp power supply is not damaged; when input recovers normal, this LED road lamp power supply recovers again normal operating conditions.
The purpose of this utility model is to provide a kind of high reliability LED road lamp power supply that overvoltage is controlled that has, can be to because of thunderbolt, or large various loads open, and turn-off, the various surge voltages that voltage clutter and so on produces are analyzed and are cut and remove; According to the fault to different with think that misoperation protects prompting, and carry out immediately defencive function.Thereby the reliability that greatly improves the LED street lamp reduces maintenance rate.
Claims (3)
1. an overvoltage protection efficient LED streetlamp power supply, comprise input rectifying filter circuit, PFC APFC, high pressure DC-DC change-over circuit module, it is characterized in that, also comprise surge voltage testing circuit, surge voltage control circuit, described high pressure DC-DC change-over circuit inside modules is provided with overvoltage detection unit, overvoltage control unit; Described surge voltage detection, control circuit are connected with the PFC APFC, and described overvoltage detection, control circuit are connected with the change-over circuit of high pressure DC-DC modular converter.
2. overvoltage protection efficient LED streetlamp power supply according to claim 1; it is characterized in that; high pressure DC-DC change-over circuit module section comprises overvoltage detection unit; the overvoltage control unit, power transfer control unit, power conversion unit; the power output circuit unit; overvoltage detection unit connects the overvoltage control unit, then, by power transfer control unit and power conversion unit, finally is connected to the power stage unit.
3. overvoltage protection efficient LED streetlamp power supply according to claim 1; it is characterized in that; surge voltage detects, control circuit is comprised of the first resistance R 15, the second resistance R 16, surge detecting element U3, triode Q5, and the PC that described triode Q5 connects high pressure DC-DC change-over circuit controls pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320534954.1U CN203387750U (en) | 2013-08-29 | 2013-08-29 | Over-voltage protection efficient LED street lamp power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320534954.1U CN203387750U (en) | 2013-08-29 | 2013-08-29 | Over-voltage protection efficient LED street lamp power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203387750U true CN203387750U (en) | 2014-01-08 |
Family
ID=49876195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320534954.1U Expired - Fee Related CN203387750U (en) | 2013-08-29 | 2013-08-29 | Over-voltage protection efficient LED street lamp power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203387750U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779781A (en) * | 2014-01-14 | 2015-07-15 | 杭州中恒派威电源有限公司 | Surge suppression circuit suitable for single-stage power-factor correcting circuit |
| CN112748281A (en) * | 2019-10-31 | 2021-05-04 | 现代摩比斯株式会社 | Average power measuring device and method for fuel cell, and voltage measuring device |
| WO2021248259A1 (en) * | 2020-06-08 | 2021-12-16 | Tridonic Gmbh & Co Kg | Active surge suppression circuit, active surge suppression method, power supply and led driver |
-
2013
- 2013-08-29 CN CN201320534954.1U patent/CN203387750U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779781A (en) * | 2014-01-14 | 2015-07-15 | 杭州中恒派威电源有限公司 | Surge suppression circuit suitable for single-stage power-factor correcting circuit |
| CN104779781B (en) * | 2014-01-14 | 2018-05-11 | 杭州中恒派威电源有限公司 | A kind of surge restraint circuit suitable for single-stage power factor correcting circuit |
| CN112748281A (en) * | 2019-10-31 | 2021-05-04 | 现代摩比斯株式会社 | Average power measuring device and method for fuel cell, and voltage measuring device |
| CN112748281B (en) * | 2019-10-31 | 2024-07-16 | 现代摩比斯株式会社 | Average power measuring device and method for fuel cell and voltage measuring device |
| WO2021248259A1 (en) * | 2020-06-08 | 2021-12-16 | Tridonic Gmbh & Co Kg | Active surge suppression circuit, active surge suppression method, power supply and led driver |
| GB2610732A (en) * | 2020-06-08 | 2023-03-15 | Tridonic Gmbh & Co Kg | Active surge suppression circuit, active surge suppression method, power supply and LED driver |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101848580A (en) | Led lamp control circuit and led lamp | |
| CN201499348U (en) | LED illumination driving circuit with wide load and high efficiency | |
| CN107294058A (en) | A kind of overvoltage undervoltage detection circuit applied to solar energy power accumulating power supply | |
| CN103166175A (en) | Input overvoltage protection circuit for light-emitting diode (LED) driving power supply | |
| CN203387750U (en) | Over-voltage protection efficient LED street lamp power supply | |
| CN204350378U (en) | A kind of LED of energy extinguish fast | |
| CN106658838A (en) | Lighting device, control chip, linear dimming system and linear dimming method | |
| CN204046874U (en) | A kind of Novel LED light | |
| CN103427621A (en) | Mining isolation type intrinsic safety LED driving power source | |
| CN108923388A (en) | A kind of fault detection circuit powering on buffer cell and method | |
| CN206196097U (en) | Lighting device , control chip and linear dimming system | |
| CN104902647A (en) | Intelligent induction type energy-saving illuminating system based on constant current protection | |
| CN104754837B (en) | Input over-voltage protection constant-current power supply | |
| CN204271611U (en) | A kind of alternating current inputting over/under voltage protective circuit | |
| CN203205828U (en) | LED driving power supply input overvoltage protection circuit | |
| CN105813273B (en) | The method, apparatus and lighting apparatus of a kind of anti-lamp group over-voltage and under-voltage work | |
| CN106376136A (en) | LED power circuit and LED lamp | |
| CN207321588U (en) | Led lamp | |
| CN202857034U (en) | Dual light source switching illuminating lamp | |
| CN109617010A (en) | A kind of overvoltage/undervoltage protective device and its control method | |
| CN209299565U (en) | A kind of protection circuit against input over-voltage and driving power | |
| CN104768298B (en) | Input undervoltage protection type constant-current power supply | |
| CN205611014U (en) | High power factor's LED street lighting | |
| CN208986593U (en) | A kind of 10kv current transformer self- recoverage open circuit safety device | |
| CN215682711U (en) | Processing system for dealing with line leakage in direct-current lighting power supply |
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: 20140108 Termination date: 20140829 |
|
| EXPY | Termination of patent right or utility model |