CN201813583U - Driving power supply for large-power LED streetlamp - Google Patents

Driving power supply for large-power LED streetlamp Download PDF

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Publication number
CN201813583U
CN201813583U CN 201020107770 CN201020107770U CN201813583U CN 201813583 U CN201813583 U CN 201813583U CN 201020107770 CN201020107770 CN 201020107770 CN 201020107770 U CN201020107770 U CN 201020107770U CN 201813583 U CN201813583 U CN 201813583U
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CN
China
Prior art keywords
power supply
unit
control unit
output
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
Application number
CN 201020107770
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Chinese (zh)
Inventor
刘庆生
宋雷
孟喆
庞树军
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DALIAN NINEO-NINE MANUFACTURE Co Ltd
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DALIAN NINEO-NINE MANUFACTURE Co Ltd
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Priority to CN 201020107770 priority Critical patent/CN201813583U/en
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Publication of CN201813583U publication Critical patent/CN201813583U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/72Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting

Abstract

The utility model discloses a driving power supply for a large-power LED streetlamp. The driving power supply for the large-power LED streetlamp comprises a power supply input terminal, an EMI (Electro-Magnetic Interference) filter unit, a rectifier filter unit, an active power factor correcting unit, a flyback DC/DC converting unit, an output unit, an auxiliary power supply 1, an auxiliary power supply 2, an APFC (Active Power Factor Correction) control unit, a flyback control unit, an optically-coupled isolating unit and a feedback control unit, wherein the feedback control unit comprises a voltage-limit feedback circuit, a current error amplifying circuit and a voltage reference circuit; and a feedback signal is generated according to the output current and the output voltage. In the utility model, the driving power supply has the output power up to 100W and the power factor more than 0.95; by tolerance distribution, the output current precision under the batch production condition can be controlled within 2%; and the problems that the existing LED driving power supply has small power, low power factor and large dispersion of output current under batch production condition can be solved.

Description

Driving power supply for high-power LED street lamp
Technical field
The utility model relates to the constant-current driving power supply of LED street lamp in a kind of 100W of being used for power bracket.
Background technology
Under the serious all the more background of world's energy scarcity, LED is efficient with it, long-life, characteristics such as pollution-free, is regarded as substituting the perfect light source of conventional lamp, city illumination wherein, and promptly street lamp is the important applied field of LED.For the LED street lamp, it is different from traditional street lamp, can not directly drive with the civil power of alternation, and needs constant drive current, and the fluctuation of drive current can have influence on the life-span of LED greatly, so just needs the special constant-current driving power supply of design.Yet existing driving power adopts resistance-capacitance depressurization, Buck or inverse-excitation converting circuit to realize mostly behind rectification circuit, often have in this case that power output is little, power factor is low, the dispersed problem such as big of output current when producing in batches, these problems have restricted the promotion and application of LED street lamp.
The utility model content
LED driving power power is little in the prior art, power factor (PF) is low in order to solve for the utility model, the dispersed big problem of output current under the mass production environment, and the utility model provides a kind of driving power supply for high-power LED street lamp.
The technical scheme that problem adopted that the utility model solves the prior art existence is: a kind of driving power supply for high-power LED street lamp, described driving power supply for high-power LED street lamp is by power input, the EMI filter unit, rectification filtering unit, the active power factor correcting unit, anti-sharp DC/DC converting unit, output unit, accessory power supply 1, accessory power supply 2, the APFC control unit, anti-sharp control unit, light-coupled isolation unit and feedback control unit are formed, power input, the EMI filter unit, rectification filtering unit, the active power factor correcting unit, anti-sharp DC/DC converting unit is connected successively with output unit, the input of accessory power supply 1 is connected with anti-sharp DC/DC converting unit, the output of accessory power supply 1 is connected with anti-sharp control unit, accessory power supply 2 inputs are connected with output unit, accessory power supply 2 outputs are connected with feedback control unit, output unit is connected with the light-coupled isolation unit through feedback control unit, light-coupled isolation unit output and anti-sharp control unit, anti-swash control unit output one tunnel and is connected with the active power factor correcting unit through the APFC control unit, the one tunnel is connected with anti-sharp DC/DC converting unit.
Described power input is made up of the fuse F1 that is used for open circuit when the short circuit, negative tempperature coefficient thermistor NTC1, the piezo-resistance RV1 that is used to absorb the energy that surge that electrical network brings or impulse train disturb of surge current when being used to suppress to start.
Described EMI filter unit is made up of X safety capacitor C X1, common mode inhibition choke T1 and Y safety capacitor C Y1, CY2; Described rectification filtering unit is made up of rectifier bridge and filter capacitor; Described active power factor correcting unit adopts the Boost topological structure, is made up of an inductance, a MOSFET, a current sampling resistor and two filter capacitors.
Described anti-sharp DC/DC converting unit is made up of anti-violent change depressor T2, switching tube Q3, current sampling resistor R11, secondary commutation circuit and a RCD buffer circuit, and wherein the RCD buffer circuit is made up of diode D4, capacitor C 2 and resistance R 1; Described anti-sharp DC/DC change-over circuit is operated under the continuous current pattern, satiable inductor L3 of series connection on rectifier diode D2.
Described output unit is made up of filter capacitor C9, C10 and output current sampling resistor R10, and the tolerance limits of described output current sampling resistor R10 is 1%; Described accessory power supply 1 obtains energy from the auxiliary winding of the 3rd end of anti-violent change depressor T2, by rectification, be filtered into the anti-control unit power supply that swashs.
Described accessory power supply 2 obtains energy from output, forms by resistance R 4, R8, R14, capacitor C 11, C12, triode Q2 and voltage stabilizing didoe D5, and be the feedback control unit power supply.
Described APFC control unit is made up of APFC control special chip and peripheral circuit thereof, and it provides drive signal to the MOSFET of active power factor correcting unit; The power supply of APFC control unit is provided by anti-sharp control unit.
Described anti-sharp control unit is formed by instead swashing control special chip and peripheral circuit thereof, and it has accessory power supply 1 power supply, by light-coupled isolation unit acquisition feedback signal, for the switching tube that instead swashs the DC/DC converting unit provides drive signal.
Described feedback control unit comprises the pressure limiting feedback circuit, current error amplifying circuit and voltage reference circuit three parts, wherein voltage reference circuit is made up of controlled voltage-stabiliser tube U5 of three ends and peripheral circuit thereof, its output is one and is used to produce the relatively follow circuit of the reference voltage of usefulness, the pressure limiting feedback circuit is by voltage stabilizing didoe D8 and resistance R 15, R16, R18 forms, the current error amplifying circuit is a PI governing loop, it be input as voltage and reference voltage on the output current sampling resistor R10, the output stack of its output and pressure limiting feedback forms feedback signal, the resistance R 31 in the feedback control unit, the R34 tolerance limits is 0.1%.
Described light-coupled isolation unit is made up of a precision photoelectric coupler, and the feedback signal that feedback control unit is provided passes to the anti-control unit that swashs.
The utility model beneficial technical effects is: the utility model driving power power output can reach 100W, power factor (PF) is greater than 0.95, can realize under the mass production environment output current precision in 2% by Tolerance Allocation, it efficiently solves, and existing LED driving power power is little, power factor (PF) is low, the dispersed big problem of output current under the mass production environment.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the utility model driving power supply for high-power LED street lamp;
Fig. 2 is the circuit theory diagrams of input unit and EMI filter unit;
Fig. 3 is the circuit theory diagrams that instead swash the DC/DC converting unit;
Fig. 4 is the circuit theory diagrams of accessory power supply 2;
Fig. 5 is the circuit theory diagrams of feedback control circuit.
Embodiment
Below in conjunction with drawings and the specific embodiments the utility model is elaborated.
Referring to Fig. 1, driving power supply for high-power LED street lamp is made up of power input, EMI filter unit, rectification filtering unit, active power factor correcting unit, anti-sharp DC/DC converting unit, output unit, accessory power supply 1, accessory power supply 2, APFC control unit, anti-sharp control unit, light-coupled isolation unit and feedback control unit.Described power input is made up of fuse F1, negative tempperature coefficient thermistor NTC1, piezo-resistance RV1, fuse F1 is used for open circuit when short circuit, surge current when negative tempperature coefficient thermistor NTC1 can suppress to start, piezo-resistance RV1 are used to absorb the energy that surge that electrical network brings or impulse train disturb; Described EMI filter unit is made up of X safety capacitor C X1, common mode inhibition choke T1 and Y safety capacitor C Y1, CY2; Described rectification filtering unit is made up of rectifier bridge and filter capacitor; Described active power factor correcting unit adopts the Boost topological structure, is made up of an inductance, a MOSFET, a current sampling resistor and two filter capacitors; Described anti-sharp DC/DC converting unit is made up of anti-violent change depressor T2, switching tube Q3, current sampling resistor R11, secondary commutation circuit and a RCD buffer circuit, and wherein the RCD buffer circuit is made up of diode D4, capacitor C 2 and resistance R 1; Described output unit is made up of filter capacitor C9, C10 and output current sampling resistor R10; Described accessory power supply 1 obtains energy from the auxiliary winding of the 3rd end of anti-violent change depressor T2, by rectification, be filtered into the anti-control unit power supply that swashs; Described accessory power supply 2 obtains energy from output, forms by resistance R 4, R8, R14, capacitor C 11, C12, triode Q2 and voltage stabilizing didoe D5, and be the feedback control unit power supply; Described APFC control unit is made up of APFC control special chip and peripheral circuit thereof, and it provides drive signal to the MOSFET of active power factor correcting unit, to improve the input power factor of the utility model power supply; Described anti-sharp control unit is formed by instead swashing control special chip and peripheral circuit thereof, and it has accessory power supply 1 power supply, by light-coupled isolation unit acquisition feedback signal, for the switching tube that instead swashs the DC/DC converting unit provides drive signal; Described light-coupled isolation unit is made up of a precision photoelectric coupler, and the feedback signal that feedback control unit is provided passes to the anti-control unit that swashs; Described feedback control unit comprises the pressure limiting feedback circuit; current error amplifying circuit and voltage reference circuit three parts; wherein voltage reference circuit is made up of controlled voltage-stabiliser tube U5 of three ends and peripheral circuit thereof; its output is a follow circuit; be used to produce the relatively reference voltage of usefulness; the pressure limiting feedback circuit is by voltage stabilizing didoe D8 and resistance R 15; R16; R18 forms; be used to limit output voltage and under idle condition, protect power supply; the current error amplifying circuit is a PI governing loop; it be input as voltage and reference voltage on the output current sampling resistor R10, the output stack of its output and pressure limiting feedback forms feedback signal.In the present embodiment, the APFC special integrated circuit can be selected MC33260 for use, instead swashs control chip and can select NCP1230 for use, and photoelectrical coupler can be selected EL817 for use, and the controlled voltage-stabiliser tube U5 of three ends can select LM431SC for use.
The consistency of output current when producing in batches for assurance, to carry out Tolerance Allocation and control for the key element parameter that influences output current characteristic, specifically, output current sampling resistor R10 tolerance need be controlled in 1%, resistance R 31, R34 tolerance in the voltage reference circuit need be limited in 0.1%, so just can guarantee that the output current ERROR CONTROL realizes good output current consistency in 2% when producing in enormous quantities.
For realizing power output up to 100W, anti-sharp DC/DC change-over circuit is operated under the continuous current pattern, its secondary rectifier diode D2 needs to turn-off by force like this, for suppressing its reverse recovery current to reduce the power consumption of primary switch pipe Q3, rectifier diode D2 need select short model reverse recovery time for use, and the satiable inductor L3 that connects with it.In the present embodiment, rectifier diode D2 can select 8ETH06 for use, and satiable inductor adopts the ultracrystallite magnetic core to make.
In addition, in the present embodiment, the power supply of APFC control unit is provided by anti-sharp control unit, when faults such as generation output zero load, short circuit, instead swashs control unit and can also close the APFC control unit to reduce power consumption when closing self like this.
Above content be in conjunction with concrete optimal technical scheme to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.

Claims (10)

1. driving power supply for high-power LED street lamp, it is characterized in that: described driving power supply for high-power LED street lamp is by power input, the EMI filter unit, rectification filtering unit, the active power factor correcting unit, anti-sharp DC/DC converting unit, output unit, accessory power supply 1, accessory power supply 2, the APFC control unit, anti-sharp control unit, light-coupled isolation unit and feedback control unit are formed, power input, the EMI filter unit, rectification filtering unit, the active power factor correcting unit, anti-sharp DC/DC converting unit is connected successively with output unit, the input of accessory power supply 1 is connected with anti-sharp DC/DC converting unit, the output of accessory power supply 1 is connected with anti-sharp control unit, accessory power supply 2 inputs are connected with output unit, accessory power supply 2 outputs are connected with feedback control unit, output unit is connected with the light-coupled isolation unit through feedback control unit, light-coupled isolation unit output and anti-sharp control unit, anti-swash control unit output one tunnel and is connected with the active power factor correcting unit through the APFC control unit, the one tunnel is connected with anti-sharp DC/DC converting unit.
2. driving power supply for high-power LED street lamp according to claim 1 is characterized in that: described power input is made up of the fuse F1 that is used for open circuit when the short circuit, negative tempperature coefficient thermistor NTC1, the piezo-resistance RV1 that is used to absorb the energy that surge that electrical network brings or impulse train disturb of surge current when being used to suppress to start.
3. driving power supply for high-power LED street lamp according to claim 1 is characterized in that: described EMI filter unit is made up of X safety capacitor C X1, common mode inhibition choke T1 and Y safety capacitor C Y1, CY2; Described rectification filtering unit is made up of rectifier bridge and filter capacitor; Described active power factor correcting unit adopts the Boost topological structure, is made up of an inductance, a MOSFET, a current sampling resistor and two filter capacitors.
4. driving power supply for high-power LED street lamp according to claim 3, it is characterized in that: described anti-sharp DC/DC converting unit is made up of anti-violent change depressor T2, switching tube Q3, current sampling resistor R11, secondary commutation circuit and a RCD buffer circuit, and wherein the RCD buffer circuit is made up of diode D4, capacitor C 2 and resistance R 1; Described anti-sharp DC/DC change-over circuit is operated under the continuous current pattern, satiable inductor L3 of series connection on rectifier diode D2.
5. driving power supply for high-power LED street lamp according to claim 1 is characterized in that: described output unit is made up of filter capacitor C9, C10 and output current sampling resistor R10, and the tolerance limits of described output current sampling resistor R10 is 1%; Described accessory power supply 1 obtains energy from the auxiliary winding of the 3rd end of anti-violent change depressor T2, by rectification, be filtered into the anti-control unit power supply that swashs.
6. driving power supply for high-power LED street lamp according to claim 1, it is characterized in that: described accessory power supply 2 obtains energy from output, form by resistance R 4, R8, R14, capacitor C 11, C12, triode Q2 and voltage stabilizing didoe D5, be the feedback control unit power supply.
7. driving power supply for high-power LED street lamp according to claim 1 is characterized in that: described APFC control unit is made up of APFC control special chip and peripheral circuit thereof, and it provides drive signal to the MOSFET of active power factor correcting unit; The power supply of APFC control unit is provided by anti-sharp control unit.
8. driving power supply for high-power LED street lamp according to claim 1, it is characterized in that: described anti-sharp control unit is made up of anti-sharp control special chip and peripheral circuit thereof, it has accessory power supply 1 power supply, obtain feedback signal by the light-coupled isolation unit, for the anti-switching tube that swashs the DC/DC converting unit provides drive signal.
9. driving power supply for high-power LED street lamp according to claim 1, it is characterized in that: described feedback control unit comprises the pressure limiting feedback circuit, current error amplifying circuit and voltage reference circuit three parts, wherein voltage reference circuit is made up of controlled voltage-stabiliser tube U5 of three ends and peripheral circuit thereof, its output is one and is used to produce the relatively follow circuit of the reference voltage of usefulness, the pressure limiting feedback circuit is by voltage stabilizing didoe D8 and resistance R 15, R16, R18 forms, the current error amplifying circuit is a PI governing loop, it be input as voltage and reference voltage on the output current sampling resistor R10, the output stack of its output and pressure limiting feedback forms feedback signal, the resistance R 31 in the feedback control unit, the R34 tolerance limits is 0.1%.
10. driving power supply for high-power LED street lamp according to claim 1 is characterized in that: described light-coupled isolation unit is made up of a precision photoelectric coupler, and the feedback signal that feedback control unit is provided passes to the anti-control unit that swashs.
CN 201020107770 2010-02-02 2010-02-02 Driving power supply for large-power LED streetlamp Expired - Fee Related CN201813583U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201020107770 CN201813583U (en) 2010-02-02 2010-02-02 Driving power supply for large-power LED streetlamp

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Application Number Priority Date Filing Date Title
CN 201020107770 CN201813583U (en) 2010-02-02 2010-02-02 Driving power supply for large-power LED streetlamp

Publications (1)

Publication Number Publication Date
CN201813583U true CN201813583U (en) 2011-04-27

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105491758A (en) * 2015-12-11 2016-04-13 中山市尊宝实业有限公司 New energy-efficiency standard energy-saving circuit with high power factor and ultra-low stand-by power consumption
CN106099840A (en) * 2016-08-15 2016-11-09 珠海格力电器股份有限公司 The protection circuit of a kind of power circuit and power circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105491758A (en) * 2015-12-11 2016-04-13 中山市尊宝实业有限公司 New energy-efficiency standard energy-saving circuit with high power factor and ultra-low stand-by power consumption
CN106099840A (en) * 2016-08-15 2016-11-09 珠海格力电器股份有限公司 The protection circuit of a kind of power circuit and power circuit

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C17 Cessation of patent right
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Granted publication date: 20110427

Termination date: 20140202