CN109005623A - High Power Factor Dimmable LED street lamp driving power based on flyback converter - Google Patents
High Power Factor Dimmable LED street lamp driving power based on flyback converter Download PDFInfo
- Publication number
- CN109005623A CN109005623A CN201810937683.1A CN201810937683A CN109005623A CN 109005623 A CN109005623 A CN 109005623A CN 201810937683 A CN201810937683 A CN 201810937683A CN 109005623 A CN109005623 A CN 109005623A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- flyback converter
- inductance
- chip microcontroller
- 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.)
- Pending
Links
Classifications
-
- 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]
-
- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
-
- 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 High Power Factor Dimmable LED street lamp driving power based on flyback converter that the invention discloses a kind of.Including input surge protection and EMI suppression circuit, uncontrollable rectifier grade and single switch flyback converter, input surge protection and EMI suppression circuit pass through uncontrollable rectifier grade and single switch flyback converter, input voltage detection circuit is connected, single switch flyback converter also passes through zero current detecting circuit and is connected with single-chip microcontroller XC866, single-chip microcontroller XC866 is connected by metal-oxide-semiconductor driver with single switch flyback converter, single switch flyback converter is also connected with LED light, LED light passes through fault detection circuit, output current detection circuit is connected to single-chip microcontroller XC866, perpetual calendar chip, optical sensor and temperature sensor are connected with single-chip microcontroller XC866.Structure of the invention design rationally, largely reduces the problem of causing due to each harmonic of electric current.Since flyback converter is in terms of reducing switching loss, increased device is few, and control is relatively easy to.
Description
Technical field
The present invention relates to a kind of driving powers, and in particular to a kind of High Power Factor based on flyback converter is adjustable
Light LED road lamp driving power.
Background technique
Existing LED street lamp driving power is substantially using mains-supplied, and alternating current 220V alternating current is through over commutation and greatly
Capacitor filtering obtains a more smooth DC voltage.Rectification-bulky capacitor filter circuit is a kind of non-linear element and energy storage
The combination of element, therefore, although input AC piezoelectric voltage be it is sinusoidal, the waveform of input AC electric current has occurred serious
Distortion is in burst pulse shape, it follows that the rectification circuit of capacitor filtering, can make utility grid input current generate Severe distortion
Non-sine (burst pulse) electric current, harmonic current to the harmful effect of utility grid, and make the input power of Switching Power Supply because
Number decline.Therefore it needs to improve existing circuit structure,
In conclusion the present invention devises, a kind of circuit efficiency is high, and will not pollute power grid based on flyback converter
High Power Factor Dimmable LED street lamp driving power.
Summary of the invention
In view of the shortcomings of the prior art, object of the present invention is to be to provide a kind of Gao Gong based on flyback converter
Rate factor adjustable light LED road lamp driving power, it is reasonable in design, largely reduce each harmonic due to electric current
The problem of causing.Since flyback converter is in terms of reducing switching loss, increased device is few, and control is relatively easy to.
To achieve the goals above, the present invention is to realize by the following technical solutions: height based on flyback converter
Power factor Dimmable LED street lamp driving power, including input surge protection and EMI suppression circuit, uncontrollable rectifier grade and single tube
Flyback converter, input surge protection and EMI suppression circuit are examined by uncontrollable rectifier grade and single switch flyback converter, input voltage
Slowdown monitoring circuit is connected, and single switch flyback converter also passes through zero current detecting circuit and is connected with single-chip microcontroller XC866, and single-chip microcontroller XC866 is logical
It crosses metal-oxide-semiconductor driver to be connected with single switch flyback converter, single switch flyback converter is also connected with LED light, and LED light is examined by failure
Slowdown monitoring circuit, output current detection circuit are connected to single-chip microcontroller XC866, perpetual calendar chip, optical sensor and temperature sensor with
Single-chip microcontroller XC866 is connected.
Preferably, the input surge protection and EMI suppression circuit, uncontrollable rectifier grade include first fuse,
Two fuses, the first varistor, the second varistor, eight capacitor of first capacitor-the, first the-the four inductance of inductance and first
Rectifier bridge DSEI60-12A, 220V both ends of power is connected with first fuse one end, second fuse one end respectively, the first fusing
The first varistor is connected between the device other end, the second fuse other end, the first varistor is in parallel with first capacitor, the
One capacitor both ends are connected separately with the first inductance and third inductance, and the first inductance is connected with the second inductance and third capacitor respectively,
Third inductance is connected with the 4th inductance and the 4th capacitor respectively, the second inductance and the 4th inductance respectively with discharge resistance both ends phase
Even, discharge resistance, the second varistor, the second capacitor are in parallel, and the second varistor both ends connect the 5th capacitor and the 7th electricity respectively
Hold, the second capacitor both ends connect 1 foot and 3 feet of the first rectifier bridge DSEI60-12A, 2 feet of the first rectifier bridge DSEI60-12A respectively
Also it is connected with the 6th capacitor with 2 feet of the indirect circuit of power factor correction of 4 feet, and the first rectifier bridge DSEI60-12A, first
4 feet of rectifier bridge DSEI60-12A are also connected with the 8th capacitor.
Preferably, the first capacitor, the second capacitor are pressure resistance exchange 25OV X2 capacitor.
Preferably, the third capacitor, the 4th capacitor are 25OV safety Y2 capacitor.
Preferably, the 5th capacitor, the 6th capacitor, the 7th capacitor and the 8th capacitor are for filtering absorption
Safety capacitor.
Preferably, the single switch flyback converter is (single-ended anti-with absorbing circuit using single-stage inverse-excitation type pfc circuit
Excitation type converter), including the second rectifier bridge DSP25-12A and switching tube, between 1 foot and 3 feet of the second rectifier bridge DSP25-12A
220V power supply is connected, 2 feet of the second rectifier bridge DSP25-12A are connected to the drain electrode of switching tube, the second rectifier bridge by transformer
The source electrode that 4 feet of DSP25-12A connect switching tube is connected, and is also parallel with Absorption Capacitance between the source electrode and drain electrode of switching tube；It is described
Switching tube use power MOSFET.
Preferably, the LED street lamp driving power software program is mainly by main program and interrupt service subroutine structure
At main program includes opening interruption, waits to be interrupted and realizes that PFC control, current constant control and accident analysis are interrupting clothes respectively
It is completed in business subprogram；The main program mainly realizes that variable value updates and PFC is controlled；The PFC control program is adopted
The voltage and current of collection input is sent into single-chip microcontroller by the AD conversion module of single-chip microcontroller, by control algolithm realize input current with
With input voltage, to realize the raising of power factor；Constant-current dimming program are as follows: single-chip microcontroller receives the input letter of sensor
Number, according to the command signal for pre-saving output electric current needed for corresponding table obtains, the current signal with actual measurement is jointly by controlling
Algorithm obtains the PWM of certain duty ratio after adjusting；Brightness intelligent control process are as follows: believed according to the ambient light that sensor is sent
Number, required output signal is obtained according to corresponding relationship；Temperature intelligent control flow: according to temperature sensor transmission come signal
The temperature of LED light is analyzed, to accordingly reduce output electric current, LED is prevented to be burned.Time intelligence control flow: it turns on light at night
When according to the time control output electric current, control LED luminance, to reduce unnecessary loss.Troubleshooting process: pass through detection
Circuit detects whether output has open circuit, so that output electric current is reduced, thus the LED light for protecting other without failure.
Control section of the present invention selects XC866 as control core, designs detection circuit, protection circuit and driving circuit,
The control algolithm and constant current control algorithm of PFC are realized in programming on a hardware platform, complete the soft or hard of the driving power
Part design, realizes on-line debugging.
The invention has the following advantages:
1, the LED street lamp of constant current driving 50W can be achieved, brightness is adjustable；
2, it can be achieved that sinusoidal and close to unit power " green " the net side performance of input current while constant current drives；
3, have brightness detection, the function of overheating protection, while section can be reached according to the brightness of time adjustment LED street lamp
The effect of energy.
Detailed description of the invention
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments；
Fig. 1 is system structure diagram of the invention；
Fig. 2 is the circuit diagram of EMI suppression circuit and uncontrollable rectifier grade of the invention；
Fig. 3 is the circuit diagram of the single-end flyback converters of the invention with absorbing circuit；
Fig. 4 is main program flow chart of the invention；
Fig. 5 is realization PFC control flow chart of the invention；
Fig. 6 is constant-current dimming program flow diagram of the invention；
Fig. 7 is brightness intelligent control process figure of the invention；
Fig. 8 is temperature intelligent control flow chart of the invention；
Fig. 9 is time intelligence control flow chart of the invention；
Figure 10 is troubleshooting process figure of the invention；
Figure 11 is that system of the invention realizes circuit block diagram.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
Referring to Fig.1, present embodiment uses following technical scheme: the High Power Factor based on flyback converter is adjustable
Light LED road lamp driving power, including input surge protection and EMI suppression circuit, uncontrollable rectifier grade and single switch flyback converter, it is defeated
Enter surge protection and EMI suppression circuit to be connected by uncontrollable rectifier grade with single switch flyback converter, input voltage detection circuit, it is single
Pipe flyback converter also passes through zero current detecting circuit and is connected with single-chip microcontroller XC866, and single-chip microcontroller XC866 passes through metal-oxide-semiconductor driver
It is connected with single switch flyback converter, single switch flyback converter is also connected with LED light, and LED light passes through fault detection circuit, output electricity
Current detection circuit is connected to single-chip microcontroller XC866, perpetual calendar chip, optical sensor and temperature sensor with single-chip microcontroller XC866 phase
Even.
It is worth noting that, the input surge protection and EMI suppression circuit, uncontrollable rectifier grade include first fuse
FU1, second fuse FU2, the first varistor RV1, the second varistor RV2, the 8th capacitor C8 of first capacitor C1-, first
Inductance L1- the 4th inductance L4 and the first rectifier bridge DSEI60-12A, 220V both ends of power respectively with the one end first fuse FU1,
The one end second fuse FU2 is connected, and is connected with the first pressure between the first fuse FU1 other end, the second fuse FU2 other end
Quick resistance RV1, the first varistor RV1 is in parallel with first capacitor C1, and the both ends first capacitor C1 are connected separately with the first inductance L1
It is connected respectively with the second inductance L2 and third capacitor C3 with third inductance L3, the first inductance L1, third inductance L3 is respectively with the 4th
Inductance L4 and the 4th capacitor C4 is connected, and the second inductance L2 and the 4th inductance L4 are connected with the both ends discharge resistance R respectively, discharge resistance
R, the second varistor RV2, the second capacitor C2 are in parallel, and the second both ends varistor RV2 connect the electricity of the 5th capacitor C5 and the 7th respectively
Hold C7, the second both ends capacitor C2 meet 1 foot and 3 feet of the first rectifier bridge DSEI60-12A, the first rectifier bridge DSEI60-12A respectively
2 feet and 4 feet indirect circuit of power factor correction, and 2 feet of the first rectifier bridge DSEI60-12A also with the 6th capacitor C6 phase
Even, 4 feet of the first rectifier bridge DSEI60-12A are also connected with the 8th capacitor C8.
Wherein the fuse of the fuse selection delay fusing of first fuse FU1, second fuse FU2, voltage rating take
For 250V, rated current should be 2700/220=13A and certain surplus stayed to take 20A；The voltage rating of first varistor RV1 is
470V is connected in parallel on 220V power firestreak and middle line, when circuit lightning surge occurs and high power device bring moment is poor
It provides rapidly a high current access with nsec when mould high pressure, so that piezoresistor both end voltage declines rapidly,
To make equipment and component from the impact of overvoltage.C1, C2 are pressure resistance exchange 250V X2 capacitor, and capacitance is
2.2uF；The differential mode voltage of induction is sponged；C3, C4 are pressure resistance exchange 250V safety Y2 capacitor, high to incude the common mode come
Pressure provides one and discharges channel；C5-C8 is the safety capacitor for filtering absorption；R may be in filter for eliminating
The accumulation of static electricity of appearance is a fictitious load, if the capacity of capacitor is greater than 0.1uF, the resistance value of the discharge resistance is answered are as follows:
In formula, t=1s；C is the total value of C1, C2, so R=102K, is lost to reduce and can guarantee on inductance herein
Minimum current be taken as 120K；L1-L4 is several to tens milihenries；Different parameters are selected with the difference of operating current.
The effect of EMI filtering is to inhibit common mode interference and DM EMI caused by Switching Power Supply, therefore the inductance in EMI
Just it is divided into common mode inductance and differential mode inductance.Require not stringent occasion differential mode inductance that can not use DM EMI, to reduce
Cost.
(the I when rated current of selection rectifierT) when, the rated current of rectifier should be 3~10 times of output electric current.It is logical
Relationship often under the premise of known output power, between the rated current and output power of rectifier are as follows:
Po=UDC minIoη (3-2)
When exchange input is 220 × (1 ± 20%) i.e. 176~264 V, minimum rectifier output voltage UDCminAbout 176V,
When η is 95%,
Io=0.00598Po (3-3)
Then the rated current of rectifier should be 0.0179Po~0.0598Po, the specified electricity if known output power is 2700W
Stream is 49A.
The streetlamp driving power supply of present embodiment is by 220V mains-supplied.Alternating current 220V alternating current through over commutation and
Bulky capacitor filtering, obtains a more smooth DC voltage.Rectification-bulky capacitor filter circuit is a kind of non-linear element and storage
The combination of energy element, and add a circuit of power factor correction after rectification circuit.Present embodiment selects single-stage flyback
Formula pfc circuit: the buck topology being isolated with output, output voltage and choosing are inputted, circuit is simple, at low cost, high reliablity, drives
Dynamic circuit is simple, the low-power applications occasion suitable for several hectowatts.Its circuit topology figure is as shown in Figure 3: switching tube Q uses power
MOSFET, the maximum current flowed through on switching tube is primary peak point current.Its electric current maximum virtual value depends on most
Big space rate dmax, thus its current rating is determined by following formula:
The rated current for generally selecting switching tube is three times of above-mentioned theory value.
The maximum voltage that switching tube is born when off should meet following formula:
VDS=Vp max+n·Vs+VLpk (3-5)
In formula, VP maxFor the crest voltage under maximum input voltage, n is the turn ratio of primary and secondary side, VsFor vice-side winding
Voltage value, VLpkFor the peak voltage that leakage inductance generates, generally 100V；
In actual design, voltage current waveform will appear spike and surge, so the result that above-mentioned theory value calculates is also
It is considered as certain surplus, selects power device generally according to maximum 1.3-2 times for bearing voltage and current of theoretical calculation.
For Electrical Safety and output voltage is reduced, single- stage PFC flyback power supply is needed using high frequency transformer, due to becoming
The presence of depressor leakage inductance and other devices distribution parameter L C, causes metal-oxide-semiconductor pipeline section moment that can generate very big peak voltage, this
A voltage is easy to breakdown metal-oxide-semiconductor, it is necessary to clamp absorbing circuit be taken to carry out inhibition absorption to it.
Since PFC to be realized realizes current constant control and intelligent dimming simultaneously, the function such as coordinated control are realized between them
Can, choose the XC866 single-chip microcontroller of company of Infineon, 8 numbers/simulation input pin, 8 10, channel AD conversion units
(ADC), the capture/comparing unit (CCU6) of pulse-width signal (PWM), three 16 bit timing devices are generated.
The software program of LED drive power is mainly made of main program and interrupt service subroutine, and main program includes in opening
It is disconnected, it waits to be interrupted and realizes PFC control, current constant control and accident analysis are completed in interrupt service subroutine respectively.
Main program mainly realizes that variable value updates and PFC control, flow chart are as shown in Figure 4.
PFC program flow diagram is as shown in figure 5, the voltage and current of acquisition input is sent by the AD conversion module of single-chip microcontroller
Single-chip microcontroller realizes that input current follows input voltage by control algolithm, to realize the raising of power factor.
Constant-current dimming program flow diagram is as shown in fig. 6, single-chip microcontroller receives the input signal of sensor, according to pre-saving
The command signal of output electric current, obtains one after control algolithm is adjusted jointly with the current signal of actual measurement needed for corresponding table obtains
Determine the PWM of duty ratio.
Brightness intelligent control process figure is as shown in fig. 7, the ambient light signal sent according to sensor, according to corresponding relationship
Obtain required output signal.
Temperature intelligent control flow chart as shown in figure 8, according to temperature sensor transmission come signal analysis LED light temperature
Degree prevents LED to be burned to accordingly reduce output electric current.
Troubleshooting process figure is as shown in figure 9, detect whether output has open circuit by detection circuit, to reduce output
Electric current, thus the LED light for protecting other without failure.
Present embodiment is by exporting electric current, the current sample of metal-oxide-semiconductor, mistake to the DC voltage after full-bridge rectification
The port AD that the sampling of zero detection electric current inputs to single-chip microcontroller generates pwm signal control by the capture comparing unit CCU6 of single-chip microcontroller
Open and the shutdown of metal-oxide-semiconductor processed realize that the critical conduction mode of APFC realizes the raising of power factor and exports the constant current of electric current.
The xc866 chip of present embodiment is a 8 single-chip microcontrollers that company of Infineon releases, and there is PWM to generate
Capture comparing unit CCU6, mcu resource is more, specific as follows:
(1) 256 byte RAM, 4KB FLASH+16K ROM, 512 byte XRAM meets this requirement of programming
(2) generate pulse-width signal (PWM) capture/comparing unit (CCU6) can be achieved power factor correction and
The light modulation of LED street lamp；
10 bit A/D converter of (3) 8 channel is sufficient for temperature and brightness detection demand；
(4) 19 number I/O pins can meet the needs of this secondary design opposite end mouthful, it can be achieved that overload, mistake/under-voltage, overheat
Equal defencive functions.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (7)
1. the High Power Factor Dimmable LED street lamp driving power based on flyback converter, which is characterized in that including inputting surge
Protection and EMI suppression circuit, uncontrollable rectifier grade and single switch flyback converter, input surge protection and EMI suppression circuit be not by
Control rectification stage is connected with single switch flyback converter, input voltage detection circuit, and single switch flyback converter also passes through zero current detection
Circuit is connected with single-chip microcontroller XC866, and single-chip microcontroller XC866 is connected by metal-oxide-semiconductor driver with single switch flyback converter, single switch flyback
Converter is also connected with LED light, and LED light is connected to single-chip microcontroller XC866 by fault detection circuit, output current detection circuit,
Perpetual calendar chip, optical sensor and temperature sensor are connected with single-chip microcontroller XC866.
2. the High Power Factor Dimmable LED street lamp driving power according to claim 1 based on flyback converter, special
Sign is that the input surge protection and EMI suppression circuit, uncontrollable rectifier grade include first fuse (FU1), the second fusing
Device (FU2), the first varistor (RV1), the second varistor (RV2), the-the eight capacitor of first capacitor (C1) (C8), the first electricity
Feel (L1) the-the four inductance (L4) and the first rectifier bridge DSEI60-12A, 220V both ends of power respectively with first fuse (FU1) one
End, second fuse one end (FU2) are connected, and connect between first fuse (FU1) other end, second fuse (FU2) other end
It is connected to the first varistor (RV1), the first varistor (RV1) is in parallel with first capacitor (C1), the first capacitor both ends (C1) point
Be not connected with the first inductance (L1) and third inductance (L3), the first inductance (L1) respectively with the second inductance (L2) and third capacitor
(C3) it is connected, third inductance (L3) is connected with the 4th inductance (L4) and the 4th capacitor (C4) respectively, the second inductance (L2) and the 4th
Inductance (L4) is connected with the both ends discharge resistance (R) respectively, discharge resistance (R), the second varistor (RV2), the second capacitor (C2)
Parallel connection, the both ends the second varistor (RV2) connect the 5th capacitor (C5) and the 7th capacitor (C7), the second capacitor both ends (C2) point respectively
Do not connect 1 foot and 3 feet of the first rectifier bridge DSEI60-12A, the indirect powers of 2 feet of the first rectifier bridge DSEI60-12A and 4 feet because
Number correcting circuit, and 2 feet of the first rectifier bridge DSEI60-12A are also connected with the 6th capacitor (C6), the first rectifier bridge DSEI60-
4 feet of 12A are also connected with the 8th capacitor (C8).
3. the High Power Factor Dimmable LED street lamp driving power according to claim 1 based on flyback converter, special
Sign is that the first capacitor (C1), the second capacitor (C2) are pressure resistance exchange 25OV X2 capacitor.
4. the High Power Factor Dimmable LED street lamp driving power according to claim 1 based on flyback converter, special
Sign is that the third capacitor (C3), the 4th capacitor (C4) are 25OV safety Y2 capacitor.
5. the High Power Factor Dimmable LED street lamp driving power according to claim 1 based on flyback converter, special
Sign is that the 5th capacitor (C5), the 6th capacitor (C6), the 7th capacitor (C7) and the 8th capacitor (C8) are to inhale for filtering
The safety capacitor of adduction.
6. the High Power Factor Dimmable LED street lamp driving power according to claim 1 based on flyback converter, special
Sign is, the single switch flyback converter uses single-stage inverse-excitation type pfc circuit, including the second rectifier bridge DSP25-12A and opens
Pipe (Q) is closed, connection 220V power supply between 1 foot and 3 feet of the second rectifier bridge DSP25-12A, the 2 of the second rectifier bridge DSP25-12A
Foot is connected to the drain electrode of switching tube (Q) by transformer (T1), and 4 feet of the second rectifier bridge DSP25-12A connect the source of switching tube (Q)
Extremely it is connected, Absorption Capacitance (Cs) is also parallel between the source electrode and drain electrode of switching tube (Q)；The switching tube (Q) uses power
MOSFET。
7. the High Power Factor Dimmable LED street lamp driving power according to claim 1 based on flyback converter, special
Sign is that the LED street lamp driving power software program is mainly made of main program and interrupt service subroutine, main program packet
Interruption is included out, wait to be interrupted and realizes PFC control, current constant control and accident analysis are complete in interrupt service subroutine respectively
At；The main program mainly realizes that variable value updates and PFC is controlled；The voltage of the PFC control programmed acquisition input
And electric current is sent into single-chip microcontroller by the AD conversion module of single-chip microcontroller, realizes that input current follows input voltage by control algolithm,
To realize the raising of power factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810937683.1A CN109005623A (en) | 2018-08-17 | 2018-08-17 | High Power Factor Dimmable LED street lamp driving power based on flyback converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810937683.1A CN109005623A (en) | 2018-08-17 | 2018-08-17 | High Power Factor Dimmable LED street lamp driving power based on flyback converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109005623A true CN109005623A (en) | 2018-12-14 |
Family
ID=64592508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810937683.1A Pending CN109005623A (en) | 2018-08-17 | 2018-08-17 | High Power Factor Dimmable LED street lamp driving power based on flyback converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109005623A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111083847A (en) * | 2020-01-08 | 2020-04-28 | 广东电网有限责任公司 | High-power-factor LED driving system of transformer substation |
| CN112399673A (en) * | 2020-11-13 | 2021-02-23 | 海宁瑞丰灯头股份有限公司 | High-power LED lamp drive circuit |
| CN114885465A (en) * | 2022-07-11 | 2022-08-09 | 上海芯龙半导体技术股份有限公司南京分公司 | LED fault state detection and protection circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101637064A (en) * | 2007-03-12 | 2010-01-27 | 塞瑞斯逻辑公司 | Lighting system with power factor correction control data determined from a phase modulated signal |
| CN101959350A (en) * | 2010-10-15 | 2011-01-26 | 珠海市绿色照明科技有限公司 | Electrolytic capacitor-free LED power source power conversion method and application circuit thereof |
| CN101969725A (en) * | 2010-10-11 | 2011-02-09 | 复旦大学 | Intelligent general light-emitting diode (LED) street lamp illuminating power supply system |
| CN104023441A (en) * | 2014-05-30 | 2014-09-03 | 西安文理学院 | Digital control LED street lamp driving power source |
| CN104754840A (en) * | 2015-04-20 | 2015-07-01 | 江南大学 | Novel LED driving power supply |
| CN105007647A (en) * | 2014-04-23 | 2015-10-28 | 苏州鸿益丰光电有限公司 | Driving method and circuit of intelligent control lighting appliance |
-
2018
- 2018-08-17 CN CN201810937683.1A patent/CN109005623A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101637064A (en) * | 2007-03-12 | 2010-01-27 | 塞瑞斯逻辑公司 | Lighting system with power factor correction control data determined from a phase modulated signal |
| CN101969725A (en) * | 2010-10-11 | 2011-02-09 | 复旦大学 | Intelligent general light-emitting diode (LED) street lamp illuminating power supply system |
| CN101959350A (en) * | 2010-10-15 | 2011-01-26 | 珠海市绿色照明科技有限公司 | Electrolytic capacitor-free LED power source power conversion method and application circuit thereof |
| CN105007647A (en) * | 2014-04-23 | 2015-10-28 | 苏州鸿益丰光电有限公司 | Driving method and circuit of intelligent control lighting appliance |
| CN104023441A (en) * | 2014-05-30 | 2014-09-03 | 西安文理学院 | Digital control LED street lamp driving power source |
| CN104754840A (en) * | 2015-04-20 | 2015-07-01 | 江南大学 | Novel LED driving power supply |
Non-Patent Citations (1)
| Title |
|---|
| 孙希艳: "LED路灯驱动电源的研究与设计", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111083847A (en) * | 2020-01-08 | 2020-04-28 | 广东电网有限责任公司 | High-power-factor LED driving system of transformer substation |
| CN112399673A (en) * | 2020-11-13 | 2021-02-23 | 海宁瑞丰灯头股份有限公司 | High-power LED lamp drive circuit |
| CN114885465A (en) * | 2022-07-11 | 2022-08-09 | 上海芯龙半导体技术股份有限公司南京分公司 | LED fault state detection and protection circuit |
| CN114885465B (en) * | 2022-07-11 | 2022-09-27 | 上海芯龙半导体技术股份有限公司南京分公司 | LED fault state detection and protection circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109005623A (en) | High Power Factor Dimmable LED street lamp driving power based on flyback converter | |
| CN109120165A (en) | A kind of isolated form three-phase AC/DC conversion device and its control method | |
| CN109587876A (en) | Self-adaptive non-loss is absorbed without bridge single-stage multiple-channel output LED drive power | |
| Chen et al. | An LED lamp driver compatible with low-and high-frequency sources | |
| CN203057605U (en) | Low stroboflash driving circuit and LED lamp employing low stroboflash driving circuit | |
| CN1431759A (en) | DC-DC power transfer device with zero voltage soft switch | |
| CN109362159A (en) | A kind of low ripple LED drive power with leakage inductance energy recycling | |
| CN204191008U (en) | A kind of simple and easy high PFC framework controllable silicon light modulation LED drive power | |
| CN110380625A (en) | Exchange turns DC converter and Switching Power Supply | |
| CN109327147A (en) | A kind of power regulation device of High Frequency Solid State induction heating power | |
| CN202396031U (en) | Lighting LED driver | |
| CN207427521U (en) | A kind of LED illumination replaces light source | |
| CN105764178A (en) | Stroboflash-free sectional type constant-current LED driving circuit | |
| CN101795058B (en) | Method for startup and magnetic reset of three-phase single-stage power factor correction circuit and realization circuit | |
| CN104378888A (en) | Simple silicon-controlled dimming LED driving power supply with high-PFC structure | |
| CN209105053U (en) | A kind of isolated form three-phase AC/DC conversion device | |
| CN205029936U (en) | LED lighting system that can regulate and control | |
| CN104968135B (en) | The digital control circuit of electronic ballast of HID light without electrolytic capacitor | |
| CN200983685Y (en) | Driving power supply of magnetic control tube | |
| CN102695345B (en) | Energy-efficiency intelligent ballast | |
| CN207968331U (en) | A kind of wide scope converter | |
| CN211128316U (en) | L ED constant current driving power supply for replacing double-circuit ballast | |
| CN2529443Y (en) | DC-DC power transformer | |
| CN106998606B (en) | The two-tube list buck LED drive power device of one kind and constant current control method | |
| CN109005621A (en) | LED drive power and its working method, LED lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181214 |