CN201995169U - Driving power supply of high-power LED (light-emitting diode) street lamp - Google Patents
Driving power supply of high-power LED (light-emitting diode) street lamp Download PDFInfo
- Publication number
- CN201995169U CN201995169U CN 201120008326 CN201120008326U CN201995169U CN 201995169 U CN201995169 U CN 201995169U CN 201120008326 CN201120008326 CN 201120008326 CN 201120008326 U CN201120008326 U CN 201120008326U CN 201995169 U CN201995169 U CN 201995169U
- Authority
- CN
- China
- Prior art keywords
- circuit
- triode thyristor
- bidirectional triode
- isolating transformer
- street lamp
- 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
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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
- 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
Abstract
The utility model discloses a driving power supply of a high-power LED (light-emitting diode) street lamp, which comprises a rectifier, a power factor correcting circuit, a switching power supply circuit, a pulse generating and driving circuit, a protection circuit, a high-frequency converter and an LED street lamp. A parallel circuit consisting of a surge protection resistor (R1) and a bidirectional triode thyristor (VS) is connected in series between an anode output end of the rectifier and an anode input end of the power factor correcting circuit; one end of a secondary coil (NS) of an isolating transformer (T1) in the power factor correcting circuit is connected with the surge protection resistor, the bidirectional triode thyristor and one end of an induction coil (L1); and the other end of the secondary coil of the isolating transformer is connected with a control electrode of the bidirectional triode thyristor. When the isolating transformer in the power factor correcting circuit is started, a grid electrode of a field-effect tube immediately starts a voltage pulse and enables the bidirectional triode thyristor to be conducted through the isolating transformer so that a surge current is discharged through the bidirectional triode thyristor, and an LED power supply and other elements can be effectively prevented from being damaged.
Description
Technical field
The utility model relates to a kind of driving power supply for high-power LED street lamp, belongs to the supply unit technical field.
Background technology
LED is as the light source of street lamp, and it and conventional light source are compared, because of its have the life-span long, anti-seismic performance good, no ultraviolet radiation, photochromic good, luminous efficiency is high, to numerous advantages such as environment are safe from harm, and obtain increasingly extensive application.But because the ability of LED power circuit antisurge is relatively poor, particularly high-power LED street lamp can produce one usually than big several times of running current and even the surge current more than tens times when energized, very easily causes the damage of LED power supply.At present, for suppressing the harmful effect of surge current to the LED power supply, the suppression element of a NTC subzero temperature thermistor of connecting at the input circuit of LED streetlamp driving power supply or in the full-wave rectifier output loop mostly as surge current.But the NTC thermistor in use exists two shortcoming: a. in energized moment, and NTC thermistor " cold conditions " resistance at room temperature is bigger, when big electric current by the time can produce bigger power loss; B. in operate as normal, " hot " resistance value of NTC thermistor is less, and temperature is higher.As deenergization in the case, need energized again in short time interval internal cause, the NTC thermistor is not because temperature also has enough time to descend or temperature reduces and seldom still presents Low ESR, thereby do not have the inhibitory action to surge current.
The utility model content
The purpose of this utility model is to overcome above-mentioned NTC subzero temperature thermistor as the existing shortcoming of surge current suppression element, provides a kind of and can play inhibiting driving power supply for high-power LED street lamp to surge current.
Its art scheme is: a kind of driving power supply for high-power LED street lamp; comprise rectifier; circuit of power factor correction; switching power circuit; pulse generation and drive circuit; protective circuit; high-frequency converter and LED street lamp; it is characterized in that: connect by the parallel circuits of surge protection resistance and bidirectional triode thyristor between the cathode output end of rectifier and the electrode input end of circuit of power factor correction; secondary coil one end and the surge protection resistance of the isolating transformer in the circuit of power factor correction; one end of bidirectional triode thyristor and induction coil is connected, and the other end of the secondary coil of isolating transformer is connected with the control utmost point of bidirectional triode thyristor.
Its technique effect is: owing to connect by the parallel circuits of surge protection resistance R 1 and bidirectional triode thyristor VS between the electrode input end of the cathode output end of rectifier and circuit of power factor correction, so when the isolating transformer in the circuit of power factor correction starts, the grid of field effect transistor is that the starting resistor pulse makes the bidirectional triode thyristor conducting by isolating transformer, thereby surge current is discharged from by bidirectional triode thyristor, on the one hand, effectively protected LED and other components and parts to exempt from damage; Make on the other hand and the almost short circuit of surge protection resistance effectively reduced the power loss that surge current is caused by surge protection resistance.
Description of drawings
Fig. 1 is the utility model electrical schematic diagram.
Embodiment
As shown in Figure 1, a kind of driving power supply for high-power LED street lamp comprises rectifier, circuit of power factor correction, switching power circuit, pulse generation and drive circuit, protective circuit, high-frequency converter and LED street lamp.Connect between the cathode output end of rectifier and the electrode input end of circuit of power factor correction by the parallel circuits of surge protection resistance R 1 with bidirectional triode thyristor VS; secondary coil NS one end of isolating transformer T1 in the circuit of power factor correction is connected with the end of surge protection resistance R 1, bidirectional triode thyristor VS and induction coil L1, and the other end of the secondary coil of isolating transformer T1 is connected with the control utmost point of bidirectional triode thyristor.
After AC power is by bridge rectifier rectification output, electric current is by surge protection resistance R 1 and controllable silicon VS, produce the 400V direct voltage by the circuit of power factor correction of forming by circuit such as L1, T1, VD1, C1 again, divide two-way output: the one tunnel exports high-frequency generator to produces high frequency voltage, and this high frequency voltage is by giving the LED bulb powered after the D1 rectification; Another road exports switching power circuit to.The low-voltage dc power supply of switching power circuit generation+12V, on the one hand to power supplies such as pulse generation and drive circuit and protective circuits, the primary coil NP by isolating transformer T1 is that the grid of metal-oxide-semiconductor field effect transistor (VT1) provides operating voltage on the other hand.
Its course of work: when the isolating transformer in the circuit of power factor correction starts, the grid of field effect transistor is that the starting resistor pulse makes the bidirectional triode thyristor conducting by isolating transformer, thereby surge current is discharged from by bidirectional triode thyristor, on the one hand, effectively protected LED and other components and parts to exempt from damage; Make on the other hand and the almost short circuit of surge protection resistance effectively reduced the power loss that surge current is caused by surge protection resistance.
Claims (1)
1. driving power supply for high-power LED street lamp; comprise rectifier; circuit of power factor correction; switching power circuit; pulse generation and drive circuit; protective circuit; high-frequency converter and LED street lamp; it is characterized in that: connect between the cathode output end of described rectifier and the electrode input end of circuit of power factor correction by the parallel circuits of surge protection resistance (R1) with bidirectional triode thyristor (VS); secondary coil (NS) end and the surge protection resistance of the isolating transformer in the circuit of power factor correction (T1); bidirectional triode thyristor is connected with an end of induction coil (L1), and the other end of the secondary coil of isolating transformer is connected with the control utmost point of bidirectional triode thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120008326 CN201995169U (en) | 2011-01-12 | 2011-01-12 | Driving power supply of high-power LED (light-emitting diode) street lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120008326 CN201995169U (en) | 2011-01-12 | 2011-01-12 | Driving power supply of high-power LED (light-emitting diode) street lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201995169U true CN201995169U (en) | 2011-09-28 |
Family
ID=44671642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120008326 Expired - Fee Related CN201995169U (en) | 2011-01-12 | 2011-01-12 | Driving power supply of high-power LED (light-emitting diode) street lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201995169U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102752915A (en) * | 2012-06-13 | 2012-10-24 | 航天科技控股集团股份有限公司 | Car lamp turning on control strategy for inhibiting instantaneous surge current based on ambient temperature |
| CN102752940A (en) * | 2012-07-19 | 2012-10-24 | 矽力杰半导体技术(杭州)有限公司 | High-efficiency LED (light-emitting diode) drive circuit and drive method thereof |
| WO2015000221A1 (en) * | 2013-07-04 | 2015-01-08 | 京东方科技集团股份有限公司 | Driving circuit and light-emitting device |
| WO2015058538A1 (en) * | 2013-10-22 | 2015-04-30 | 珠海格力电器股份有限公司 | Power source circuit and air conditioning unit |
| CN109818341A (en) * | 2019-03-12 | 2019-05-28 | 欧普照明股份有限公司 | A kind of surge current suppression circuit |
| CN112769325A (en) * | 2020-12-30 | 2021-05-07 | 珠海拓芯科技有限公司 | Power factor correction circuit, outer unit controller and air conditioner |
-
2011
- 2011-01-12 CN CN 201120008326 patent/CN201995169U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102752915A (en) * | 2012-06-13 | 2012-10-24 | 航天科技控股集团股份有限公司 | Car lamp turning on control strategy for inhibiting instantaneous surge current based on ambient temperature |
| CN102752915B (en) * | 2012-06-13 | 2015-03-04 | 航天科技控股集团股份有限公司 | Car lamp turning on control strategy for inhibiting instantaneous surge current based on ambient temperature |
| CN102752940A (en) * | 2012-07-19 | 2012-10-24 | 矽力杰半导体技术(杭州)有限公司 | High-efficiency LED (light-emitting diode) drive circuit and drive method thereof |
| CN102752940B (en) * | 2012-07-19 | 2014-07-16 | 矽力杰半导体技术(杭州)有限公司 | High-efficiency LED (light-emitting diode) drive circuit and drive method thereof |
| TWI508613B (en) * | 2012-07-19 | 2015-11-11 | Silergy Semiconductor Technology Hangzhou Ltd | High efficiency LED driver circuit and its driving method |
| WO2015000221A1 (en) * | 2013-07-04 | 2015-01-08 | 京东方科技集团股份有限公司 | Driving circuit and light-emitting device |
| US9247596B2 (en) | 2013-07-04 | 2016-01-26 | Boe Technology Group Co., Ltd. | Driving circuit for driving light-emitting circuit, and light-emitting device having the same |
| WO2015058538A1 (en) * | 2013-10-22 | 2015-04-30 | 珠海格力电器股份有限公司 | Power source circuit and air conditioning unit |
| CN109818341A (en) * | 2019-03-12 | 2019-05-28 | 欧普照明股份有限公司 | A kind of surge current suppression circuit |
| CN112769325A (en) * | 2020-12-30 | 2021-05-07 | 珠海拓芯科技有限公司 | Power factor correction circuit, outer unit controller and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20140112 |