CN204014174U - A kind of digital control LED streetlamp driving power supply - Google Patents
A kind of digital control LED streetlamp driving power supply Download PDFInfo
- Publication number
- CN204014174U CN204014174U CN201420295159.6U CN201420295159U CN204014174U CN 204014174 U CN204014174 U CN 204014174U CN 201420295159 U CN201420295159 U CN 201420295159U CN 204014174 U CN204014174 U CN 204014174U
- Authority
- CN
- China
- Prior art keywords
- module
- driving power
- digital control
- power supply
- circuit
- 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
Landscapes
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The utility model relates to a kind of digital control LED streetlamp driving power supply, it comprises that input interference suppresses module, switch power module, LED constant-current control module, above-mentioned each module connects successively, and wherein, described input disturbs inhibition module to comprise lightning surge protection circuit and electromagnetic interface filter; Described lightning surge protection circuit comprises anti-surge circuit parallel with one another and lightning protection circuit.The utility model High Power Factor LED driving power, its output voltage is high and output current is relatively little, can reduce like this loss of switch element, do not need synchronous rectification still can realize high efficiency, and do not increasing on the basis of element voltage stress, reduce the current stress requirement of element, save cost.
Description
Technical field
The utility model relates to driving power field, relates in particular to a kind of digital control LED streetlamp driving power supply.
Background technology
At present, pay attention in countries in the world under the background of energy-saving and emission-reduction, LED because it has that environmental protection, energy-conservation, long service life, brightness are high, fail safe, the many-side such as stable be applied to general illumination field gradually, road lighting is one of them application direction that has potentiality.High-power LED (light emitting diode) lighting equipment has obtained the extensive approval in markets, various countries, and presents gradually the trend alternative to traditional lighting.
Driving power supply for high-power LED street lamp is the driving power of LED lighting apparatus, belongs to the one of Switching Power Supply.At the ac input end of Switching Power Supply, the current rectifying and wave filtering circuit being made up of diode and jumbo electrochemical capacitor is commonly used.Non-linear due to circuit, the input current of this class power supply and voltage are not synchronous sine wave, have comprised a large amount of harmonic waves, cause power factor lower.Therefore be necessary the input current waveform of this class power supply to carry out shaping, improve its power factor.
But in single-stage pfc circuit, because single switching transistor must be realized PFC function and output voltage regulatory function simultaneously, therefore its efficiency and performance are all inferior to two-stage pfc circuit, the general multiplex middle low power occasion at tens watts.Two-stage active PFC converter is the power factor correction mode of comparative maturity, and power factor can reach more than 0.99, has independently PFC level and the main power stage of DC-DC.Its output voltage is more accurate, and load capacity is stronger, and efficiency is high.
In view of above-mentioned defect, the utility model creator has obtained this creation finally through long research and practice.
Summary of the invention
The purpose of this utility model is to provide a kind of digital control LED streetlamp driving power supply, in order to overcome above-mentioned technological deficiency.
For achieving the above object, the utility model provides a kind of digital control LED streetlamp driving power supply, it comprises that input interference suppresses module, switch power module, LED constant-current control module, above-mentioned each module connects successively, wherein, described input disturbs inhibition module to comprise lightning surge protection circuit and electromagnetic interface filter; Described lightning surge protection circuit comprises anti-surge circuit parallel with one another and lightning protection circuit.
Further, described anti-surge circuit comprises a piezo-resistance RV1, lightning protection circuit comprise piezo-resistance RV2, RV3, gas put pipe RG1.
Further, described piezo-resistance RV2 and RV3 series connection, gas is put pipe RG1 and piezo-resistance RV3 parallel connection, and gas is put pipe RG1 ground connection.
Further, described EMI filter circuit comprises common mode inductance L1, L2 and capacitor C 1～C4, wherein, and the series circuit parallel connection of capacitor C 1 and resistance R 1, R2 composition, the series circuit of capacitor C 2 and capacitor C 3, C4 composition is in parallel, and RA1 provides discharge loop for capacitor C 1.
Further, described switch power module comprises two-stage pfc converter, and in order to realize power factor correction and to obtain suitable direct voltage, it realizes input current shaping respectively by two separate converters and output voltage regulates.
Further, described pfc converter, prime is PFC level, adopts Boost converter as main circuit topological structure, output and storage capacitor C
bconnect.
Further, described LED constant-current control module comprises sampling resistor, error amplifier, PWM controller, and described inverse excitation type converter is connected with resistance R 5, R6, R7.
The beneficial effects of the utility model are compared with prior art: the utility model High Power Factor LED driving power, its output voltage is high and output current is relatively little, can reduce like this loss of switch element, do not need synchronous rectification still can realize high efficiency, and do not increasing on the basis of element voltage stress, reduce the current stress requirement of element, save cost.And this power supply have efficiency high, to the feature such as electrical network is pollution-free.
Brief description of the drawings
Fig. 1 is the functional block diagram of the digital control LED streetlamp driving power supply of the utility model;
Fig. 2 is that the circuit diagram that suppresses module is disturbed in the utility model input;
Fig. 3 is the utility model two-stage pfc converter theory diagram;
Fig. 4 is the circuit diagram of the utility model LED constant-current control module;
Fig. 5 is the numerically controlled PFC model circuit diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing, technical characterictic and the advantage with other above-mentioned to the utility model are described in more detail.
The digital control LED streetlamp driving power supply of the utility model comprises that input interference suppresses module, switch power module, LED constant-current control module.
Suppress for conducting the electric shock of coming by power line, by pfc circuit, the pulsating voltage after rectification is converted subsequently to the stable DC high pressure of 400V, through DC-DC conversion, elementary high voltage direct current is transformed into the high frequency low voltage alternating current on secondary, then offers LED constant-current control module by obtaining direct current after rectifying and wave-filtering.
Described input disturbs inhibition module to comprise lightning surge protection circuit and electromagnetic interface filter; Described lightning surge protection circuit comprises anti-surge circuit parallel with one another and lightning protection circuit, and wherein, described anti-surge circuit comprises a piezo-resistance RV1, lightning protection circuit comprise piezo-resistance RV2, RV3, gas put pipe RG1.Piezo-resistance RV2 and RV3 series connection, gas is put pipe RG1 and piezo-resistance RV3 parallel connection, and gas is put pipe RG1 ground connection.
Fuse F1 is also set in this lightning surge protection circuit, and fuse F1 provides input short defencive function.
Described EMI filter circuit comprises common mode inductance L1, L2 and capacitor C 1～C4, wherein, the series circuit parallel connection of capacitor C 1 and resistance R 1, R2 composition, the series circuit of capacitor C 2 and capacitor C 3, C4 composition is in parallel, and RA1 provides discharge loop for capacitor C 1.
Described switch power module comprises two-stage pfc converter, in order to realize power factor correction and to obtain suitable direct voltage.Refer to shown in Fig. 3, it is the utility model two-stage pfc converter theory diagram, and it realizes input current shaping respectively by two separate converters and output voltage regulates.Wherein, prime is PFC level, adopts Boost converter as main circuit topological structure, output and storage capacitor C
bconnect; By the opening and turn-offing of pfc controller control switch pipe, input current is corrected into and the synchronous sinusoidal signal of input voltage, make power factor close to 1, its output voltage is storage capacitor C
bvoltage V
b, V
bexcursion be generally 380～400V.DC/DC level adopts inverse excitation type converter structure, to V
bisolate and step-down, realize the quick adjustment to output voltage.
Described LED constant-current control module comprises sampling resistor, error amplifier, PWM controller, described inverse excitation type converter is connected with resistance R 5, R6, R7, by voltage, electric current are sampled, after processing, error amplifier inputs PWM controller, obtain the opening and turn-offing of pulse signal, control switch pipe of switch, realize constant current control.
High-power LED driving power source adopts analog circuit to realize control mostly at present, although can reach good control effect, it still comes with some shortcomings, as: circuit structure complexity, debugging maintenance difficulty, and it is cumbersome to upgrade; The flexibility of control circuit is inadequate, is difficult for changing control strategy, is difficult for realizing complex control algorithm.
And being combined into for may of digital control and LED driving power.Adopt digital control technology, can solve well simulation and control the deficiency existing, improve the control performance of circuit.
Refer to shown in Fig. 5, it is the numerically controlled PFC model circuit diagram of the utility model, and wherein, power main circuit, adopts Boost converter, is used for realizing power conversion; Part in dotted line frame is control circuit, is used for carrying out the control of power circuit, is completed by execution algorithm program by digital control chip.The course of work of control section is: the first voltage V of digital control chip sampled power main circuit
in, V
owith current status information i
l, carry out mould/number conversion, then by the output voltage V sampling
owith reference voltage V
refcompare, obtain voltage deviation signal, then send pi regulator processing by voltage deviation signal, the amplitude signal K of generating reference electric current
pI, then amplitude signal is multiplied each other and can obtain the reference current signal i in next moment with the corresponding numerical value reading from sine table
ref(n+1) when input voltage zero passage (because, sine table synchronous reset, so the input voltage same-phase after reference current signal and rectification), then with reference to electric current, the inductive current sampling and input voltage substitution
just can calculate current switch periods and realize the needed duty cycle of switching d of power factor correction (n), through PWM module, duty cycle signals is converted into switch pulse signal, amplify after, be actuable switch, opening and turn-offing of control switch pipe, realizes power factor correction.
The foregoing is only preferred embodiment of the present utility model, is only illustrative for utility model, and nonrestrictive.Those skilled in the art is understood, and in the spirit and scope that require to limit, can carry out many changes to it in utility model right, amendment, and even equivalence, but all will fall in protection range of the present utility model.
Claims (7)
1. a digital control LED streetlamp driving power supply, it is characterized in that, it comprises that input interference suppresses module, switch power module, LED constant-current control module, and above-mentioned each module connects successively, wherein, described input disturbs inhibition module to comprise lightning surge protection circuit and electromagnetic interface filter; Described lightning surge protection circuit comprises anti-surge circuit parallel with one another and lightning protection circuit.
2. digital control LED streetlamp driving power supply according to claim 1, is characterized in that, described anti-surge circuit comprises a piezo-resistance RV1, lightning protection circuit comprise piezo-resistance RV2, RV3, gas put pipe RG1.
3. digital control LED streetlamp driving power supply according to claim 2, is characterized in that, described piezo-resistance RV2 and RV3 series connection, and gas is put pipe RG1 and piezo-resistance RV3 parallel connection, and gas is put pipe RG1 ground connection.
4. according to the digital control LED streetlamp driving power supply described in claim 2 or 3, it is characterized in that, described EMI filter circuit comprises common mode inductance L1, L2 and capacitor C 1～C4, wherein, the series circuit parallel connection of capacitor C 1 and resistance R 1, R2 composition, the series circuit of capacitor C 2 and capacitor C 3, C4 composition is in parallel, and RA1 provides discharge loop for capacitor C 1.
5. digital control LED streetlamp driving power supply according to claim 1, it is characterized in that, described switch power module comprises two-stage pfc converter, in order to realize power factor correction and to obtain suitable direct voltage, it realizes input current shaping respectively by two separate converters and output voltage regulates.
6. digital control LED streetlamp driving power supply according to claim 5, is characterized in that, described pfc converter, and prime is PFC level, adopts Boost converter as main circuit topological structure, output and storage capacitor C
bconnect.
7. digital control LED street lamp drive circuit according to claim 1 and 2, is characterized in that, described LED constant-current control module comprises sampling resistor, error amplifier, PWM controller, and described inverse excitation type converter is connected with resistance R 5, R6, R7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420295159.6U CN204014174U (en) | 2014-05-30 | 2014-05-30 | A kind of digital control LED streetlamp driving power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420295159.6U CN204014174U (en) | 2014-05-30 | 2014-05-30 | A kind of digital control LED streetlamp driving power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204014174U true CN204014174U (en) | 2014-12-10 |
Family
ID=52054110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420295159.6U Expired - Fee Related CN204014174U (en) | 2014-05-30 | 2014-05-30 | A kind of digital control LED streetlamp driving power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204014174U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016192448A1 (en) * | 2015-06-03 | 2016-12-08 | 中兴通讯股份有限公司 | Silicon carbide diode anti-surge apparatus |
-
2014
- 2014-05-30 CN CN201420295159.6U patent/CN204014174U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016192448A1 (en) * | 2015-06-03 | 2016-12-08 | 中兴通讯股份有限公司 | Silicon carbide diode anti-surge apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104023441A (en) | Digital control LED street lamp driving power source | |
| Gu et al. | Means of eliminating electrolytic capacitor in AC/DC power supplies for LED lightings | |
| CN103139992B (en) | With the LED dimming drive system of controllable silicon bypass light adjusting circuit | |
| CN102014559B (en) | Light-emitting diode light source driving power supply | |
| CN101572972A (en) | Dimmable LED constant-current drive circuit | |
| CN201813599U (en) | LED (Light-Emitting Diode) dimmer power | |
| CN105553249A (en) | Current injection type three-phase power factor correction circuit having wide voltage range and low voltage stress | |
| CN101959353A (en) | Alternating current follow dimming circuit | |
| CN105792438B (en) | A kind of buck single-stage LED drive circuit of unity power factor | |
| CN101896027B (en) | Method and circuit for controlling multi-path current distribution of LED power supply | |
| CN203327305U (en) | Bridge-free PFC plus T type three-level inversion frequency-conversion light modulator | |
| CN109496016A (en) | A kind of High Power Factor LED drive power low-frequency ripple suppressing method | |
| WO2018166501A1 (en) | Driver with charge pump circuit | |
| CN204191008U (en) | A kind of simple and easy high PFC framework controllable silicon light modulation LED drive power | |
| CN203872402U (en) | Circuit structure of multi-gear light-adjustable LED driving power supply | |
| CN204014174U (en) | A kind of digital control LED streetlamp driving power supply | |
| CN104378888B (en) | A kind of simple PFC frameworks controllable silicon light modulation LED drive power high | |
| CN208890652U (en) | A kind of new energy interface system based on double active bridge dcdc converters | |
| CN201462724U (en) | Novel LED road lamp | |
| CN204145795U (en) | Have APFC function without working frequency ripple wave LED streetlamp power source | |
| CN201182026Y (en) | Driving power supply device of LED lamp group | |
| CN203691688U (en) | Drive circuit for large-power LED light source | |
| CN102438376A (en) | LED (Light Emitting Diode) constant-current driving power circuit | |
| CN104967304A (en) | Bridgeless CUK isolation type three-phase power factor correction converter | |
| Brand et al. | Capacitance Analysis for Volume Reduction Based on Integrated Buck and Buck-Boost LED Driver |
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: 20141210 Termination date: 20150530 |
|
| EXPY | Termination of patent right or utility model |