CN103716968A - Road illumination method with direct-current high-voltage direct-driven LEDs converted through three-phase alternating current electric supply - Google Patents
Road illumination method with direct-current high-voltage direct-driven LEDs converted through three-phase alternating current electric supply Download PDFInfo
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Abstract
Provided is a road illumination method with direct-current high-voltage direct-driven LEDs converted through a three-phase alternating current electric supply. The road illumination method includes a three-phase full wave rectifier and a plurality of direct-current high-voltage direct-driven LED road lamps. The direct-current high-voltage VH direct-driven LED road lamps are obtained through three-phase alternating current full-wave rectification, the LED road lamps are direct-current high-voltage direct-driven LED road lamps, the LEDs connected in series in the same direction are used as loads, and a special integrated circuit is used for controlling the number of the LED loads in a classification mode according to transient currents flowing through the LED loads so that it can be guaranteed that the transient currents flowing through the LED loads at any moment is basically constant. The road illumination method has the advantages of being high in LED drive power supply efficiency, high in power factor, small in harmonic distortion, high in reliability, good in light stroboflash resisting performance, low in cost and the like. Meanwhile, due to the direct-current high-voltage direct-driven LED road lamps, currents flowing through an electric wire of a road illumination system are very small, the cost of the electric wire is lowered by more than 50%, and the light efficiency of the LED road lamps is improved by about 6%.
Description
Technical field
The invention belongs to electronic applications, be specifically related to three-phase alternating current civil power conversion high direct voltage and directly drive LED road lighting method.
Background technology
LED is widely used in road lighting as a kind of advanced luminescent device, but it is all to adopt single phase alternating current (A.C.) mains-supplied that existing LED street lamp illumination system drives, for example single phase alternating current (A.C.) is 220 volts, this single phase alternating current (A.C.) city electrically driven (operated) LED road lighting technology has two obvious shortcomings, the drive current of first road high-power illumination system is large, and needed electric wire cost is high; It two is that the driving power efficiency of LED light fixture is lower, is only generally 90% left and right.
Summary of the invention
Three-phase alternating current civil power conversion high direct voltage is directly driven LED road lighting technology, directly drives LED street lamp be comprised of three-phase full wave rectifier circuit and many high direct voltages.The direct driving LED street lamp of three-phase alternating current full-wave rectification gained high direct voltage, this high direct voltage directly drive LED street lamp by the LED of a plurality of series aiding connections as load, and according to the transient current size that flows through LED load, the number of LED load is carried out to grading control by application-specific integrated circuit (ASIC), to guarantee to flow through at any time the transient current substantially constant of LED load.
A kind of three-phase alternating current civil power conversion high direct voltage of the present invention is directly driven LED road lighting method and is had the features such as LED driving power efficiency is high, power factor is high, harmonic distortion is little, reliability is high, anti-smooth stroboscopic nature is good, cost is low; Simultaneously owing to being that high direct voltage is directly driven LED street lamp, the electric current of electric wire that flows through roadway lighting system is especially little, cable cost reduces greatly.
Technical scheme of the present invention is as follows:
Three-phase alternating current civil power conversion high direct voltage is directly driven LED road lighting method, by three-phase full wave rectifier circuit and more than four groups high direct voltages, directly driving LED street lamp forms, wherein three-phase full wave rectifier circuit by three phase full wave rectification bridge B1 form, three three-phase alternating current mains electricity input end mouths of three-phase full wave rectifier circuit are followed successively by first input end mouth Vin1, the second input port Vin2 and the 3rd input port Vin3, two DC high-voltage output end mouths of three-phase full wave rectifier circuit are high direct voltage port VH and with reference to ground port GND successively, high direct voltage is directly driven LED street lamp and is comprised of normal bright LED lamp group electronic circuit and controlled LED lamp group electronic circuit more than two, normal bright LED lamp group electronic circuit is the LED of one group of series aiding connection, it is the head end of normal bright LED lamp group electronic circuit that the electric current of normal bright LED lamp group electronic circuit flows into end, this head end is the high direct voltage port VH that high direct voltage is directly driven LED street lamp, and the outflow of bus current end of normal bright LED lamp group electronic circuit is the tail end of this normal bright LED lamp group electronic circuit, each controlled LED lamp group electronic circuit includes a LED that directly drives LED integrated circuit U, a current sampling resistor Rs and one group of series aiding connection, the described LED integrated circuit U that directly drives contains three ports, is followed successively by switch control port U1, current sample port U2 and zero potential reference port U3, in each controlled LED lamp group electronic circuit, it is the head end of this controlled LED lamp group electronic circuit that the electric current of controlled LED lamp group electronic circuit flows into end, tail end and the current sample port U2 of the LED of series aiding connection in this controlled LED lamp group electronic circuit, one end of current sampling resistor Rs is connected, the other end of current sampling resistor Rs is connected with zero potential reference port U3, outflow of bus current end for this controlled LED lamp group electronic circuit, as the tail end of this controlled LED lamp group electronic circuit, above-mentioned normal bright LED lamp group electronic circuit and several controlled LED lamp group electronic circuit are cascaded successively, the other end of the current sampling resistor Rs of last controlled LED lamp group electronic circuit is connected with driving the reference ground port GND of high direct voltage with zero potential reference port U3, it is all parallel with one another between LED street lamp that high direct voltage is directly driven, by road lamp electric cable respectively with the output of three phase full wave rectification device, high direct voltage port VH with reference to ground port GND, be connected.In addition: the direct driving LED street lamp of three-phase alternating current full-wave rectification gained high direct voltage, this high direct voltage directly drive LED street lamp by the LED of series aiding connection as load, and according to the transient current size that flows through LED load, the number of LED load is carried out to grading control by application-specific integrated circuit (ASIC), to guarantee to flow through at any time the transient current substantially constant of LED load.
good effect of the present invention is:
A kind of three-phase alternating current civil power conversion of the present invention high direct voltage is directly driven LED road lighting, it directly drives LED street lamp by three-phase full wave rectifier circuit and many high direct voltages and forms, wherein three-phase full wave rectifier circuit carries out full-wave rectification to electric main and obtains the high direct voltage VH that contains certain ripple composition, this high direct voltage is directly driven the power supply of LED street lamp as high direct voltage, the directly LED load of a plurality of (for example 180～200) series aiding connection in driving LED street lamp, LED light fixture has and directly drives LED integrated circuit, this integrated circuit carries out to the number of LED load the quantity that automatic classification is selected LED load according to the transient current size that flows through LED load, to guarantee that the electric current that flows through at any time LED load remains substantially constant.A kind of three-phase alternating current civil power conversion of the present invention high direct voltage is directly driven LED road lighting technology and is had the features such as LED driving power efficiency is high, power factor is high, harmonic distortion is little, reliability is high, anti-smooth stroboscopic nature is good, cost is low; Simultaneously owing to being that high direct voltage is directly driven LED street lamp, the electric current of electric wire that flows through roadway lighting system is especially little, electric wire cost is more than 50%, and the light efficiency of LED street lamp improves approximately 6%.
Accompanying drawing explanation
Fig. 1 is 10KW three-phase alternating current full-wave rectifying circuit figure of the present invention.
Fig. 2 is the circuit diagram that high direct voltage of the present invention is directly driven LED street lamp.
Fig. 3 is structure of the present invention and application block diagram.
Fig. 4 be the present invention now adopt the high direct voltage of 1 three-phase full wave rectifier circuit unit 1 and 100 groups directly drive LED streetlight unit 2 three-phase alternating current directly drive LED road lighting circuit.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
embodiment 1
Referring to Fig. 1, Fig. 1 is 10 KW three-phase alternating current full-wave rectifier circuit figure of the present invention, and wherein B1 is three phase full wave rectification bridge module, and model is MDS100A, maximum current 100A, ceiling voltage 1200V.Three three-phase alternating current inputs that in figure, Vin1, Vin2, Vin3 are B1, hold to the reference that the DC high-voltage output end that VH is B1, GND are B1.For three-phase 380V50HZ, exchange input, high direct voltage VH for by AC ripple voltage VA and direct voltage VD form, wherein VD equals 380V*
/ 2; The ripple frequency of VA is 300HZ, and VA equals 380V*(
-
/ 2); The crest voltage of VA is 380V*
.
embodiment 2
Referring to Fig. 2, Fig. 2 is the circuit diagram that high direct voltage of the present invention is directly driven LED street lamp, wherein LED111～the LED130 of series aiding connection is normal bright Light-Emitting Diode LED lamp group electronic circuit, LED131～the LED140 of series aiding connection and directly drive LED integrated circuit U and current sampling resistor Rs forms the 1st grade of controlled LED electronic circuit, the LED181～LED190 of series aiding connection and directly drive LED integrated circuit U and the 6th grade of controlled LED electronic circuit of current sampling resistor Rs formation.As shown in Figure 2, normal bright LED lamp group electronic circuit and 6 grades of controlled LED LED lamp group electronic circuits are in series.From the high direct voltage VH of three-phase rectifier and with reference to direct driving LED load respectively.LED1～LED130 is normal bright diode, and LED131～LED190 is accessed and fault control according to LED corresponding to the large young pathbreaker of transient current that flows through LED load by 6 application-specific integrated circuit (ASIC) U respectively, to guarantee to flow through at any time the electric current substantially constant of LED.
In Fig. 2, LED1～LED190 is 3.5V350MA white light LEDs, the model of application-specific integrated circuit (ASIC) U is TF11, and the resistance of the current sampling resistor Rs in 6 grades of controlled Light-Emitting Diode LED electronic circuits is respectively 5 ohm, 5.6 ohm, 6.2 ohm, 6.8 ohm, 7.5 ohm, 8.2 ohm.
The parameter that high direct voltage of the present invention is directly driven LED street lamp is: input voltage range, VH=300V～700V;
Power output P=100W(three-phase alternating current input 380V), power-efficient is greater than 95%, and power factor is greater than 0.97, and harmonic distortion THD is less than 20%, and optical frequency is dodged the degree of depth and is less than 20%.Drive LED road lamp system with 220 volts of AC single phase alternating-current directs of similar power and road lighting distance and compare, electric wire cost is more than 50%, and the light efficiency of LED street lamp improves approximately 6%.
The LED that LED used is single-chip package in Fig. 2, its conducting voltage is about 3.5V, also can use the LED of multi-chip package, and just in Fig. 2, the number of LED used need to respond minimizing.For example use the LED of 2 chip packages, its conducting voltage is about 7V, and now in Fig. 2, the number of LED used will become 95 from original 190.
embodiment 3
Referring to Fig. 3, Fig. 3 is that three-phase alternating current civil power conversion high direct voltage of the present invention is directly driven LED roadway lighting system structure and application block diagram.Comprise that three-phase full wave rectifier circuit, double core cabinet conductor and 100 high direct voltages directly drive LED street lamp, the power of each LED street lamp is 100W, gross power 10KW, and cable length kilometer, cable copper cross-sectional area is 10 square millimeters.Compare with the electrically driven (operated) LED street lamp in single phase alternating current (A.C.) city of similar power, the sectional area of cable copper cash reduces 50%, the cost of cable copper cash approximately 50%, LED road lamp efficiency is every watt of 120 lumens, power supply conversion efficiency is greater than 95%, power factor PF is greater than 0.97, and harmonic distortion is less than 20%, and optical frequency is dodged the degree of depth and is less than 20%.
For illustrating technical characterstic of the present invention, the existing LED road lighting circuit that directly drives that directly drives the three-phase alternating current that LED streetlight unit 2 forms with a high direct voltage by 1 three-phase full wave rectifier circuit unit 1 and 100 groups further illustrates,
Referring to Fig. 4, described three-phase full wave rectifier circuit unit 1 is that model is the three phase full wave rectification bridge B1 of MDS100A; The maximum current 100A of three-phase full wave rectifier circuit unit 1, ceiling voltage 1200V; One side of three-phase full wave rectifier circuit unit 1 is three-phase alternating current mains electricity input end, the opposite side of three-phase full wave rectifier circuit unit 1 is DC high-voltage output end mouth, wherein, three-phase alternating current mains electricity input end is comprised of first input end mouth Vin1, the second input port Vin2 and the 3rd input port Vin3, is connected successively respectively with the triple line of 380V electrical network; DC high-voltage output end mouth by DC high-voltage output end VH and with reference to hold GND to form; High direct voltage directly drive LED streetlight unit 2 be all connected in parallel on DC high-voltage output end VH and with reference to hold between GND.High direct voltage directly drives that LED streetlight unit 2 is 1 group of normal bright LED lamp group electronic circuit 21 and 6 groups of controlled LED lamp group electronic circuits 22 are in series successively; Described normal bright LED lamp group electronic circuit 21 LEDs by 130 series aiding connections form; In normal bright LED lamp group electronic circuit 21, the electric current of the just very normal bright LED lamp group electronic circuit 21 of the 1st LED flows into end, and in normal bright LED lamp group electronic circuit 21, the negative pole of the 130th LED is the outflow of bus current end of normal bright LED lamp group electronic circuit 21; Described controlled LED lamp group electronic circuit 22 is TF11 by 1 model directly drives LED integrated circuit U, 1 current sampling resistor Rs and 1 controlled light-emitting diodes pipe string LEDs
controlledsform; Wherein, the described LED integrated circuit U that directly drives contains three ports, is followed successively by switch control port U1, current sample port U2 and zero potential reference port U3; Controlled LED string LEDs
controlledslED by 10 series aiding connections forms; Described controlled LED string LEDs
controlledsjust very this controlled LED string LEDs of interior the 1st LED
controlledselectric current flow into end, controlled LED string LEDs
controlledsthe negative pole of interior the 10th LED is this controlled LED string LEDs
controlledsoutflow of bus current end; Switch control port U1 and controlled LED string LEDs
controlledselectric current flow into end and be connected, switch control port U1 and controlled LED string LEDs
controlledsthe tie point that flows between end of electric current be the current input terminal of this controlled LED lamp group electronic circuit 22; Current sample port U2 and controlled LED string LEDs
controlledsoutflow of bus current end be connected, current sample port U2 and controlled LED string LEDs
controlledsoutflow of bus current end between company's node be connected with one end of current sampling resistor Rs; The other end of current sampling resistor Rs is connected with zero potential reference port U3, and the tie point between the other end of current sampling resistor Rs and zero potential reference port U3 is the current output terminal of this controlled LED lamp group electronic circuit 22.The electric current of normal bright LED lamp group electronic circuit 21 flows into end and is connected with DC high-voltage output end VH, the outflow of bus current end of normal bright LED lamp group electronic circuit 21 is connected with the current input terminal of the controlled LED lamp group electronic circuit 22 of the 1st, the current output terminal of the controlled LED lamp group electronic circuit 22 of the 1st is connected with the current input terminal of the controlled LED lamp group electronic circuit 22 of the 2nd, the like, the current output terminal of the controlled LED lamp group electronic circuit 22 of the 5th is connected with the current input terminal of the controlled LED lamp group electronic circuit 22 of the 6th, the current output terminal of the controlled LED lamp group electronic circuit 22 of the 6th is connected with reference ground end GND.The resistance of current sampling resistor Rs in 6 controlled Light-Emitting Diode LED electronic circuits in the present embodiment is respectively 5 ohm, 5.6 ohm, 6.2 ohm, 6.8 ohm, 7.5 ohm, 8.2 ohm.In the present embodiment, high direct voltage is directly driven the parameter of LED street lamp and is: input voltage range, VH=300V to 700V; Power output P=100W(three-phase alternating current input 380V), power-efficient is greater than 95%, and power factor is greater than 0.97, and harmonic distortion THD is less than 20%, and optical frequency is dodged the degree of depth and is less than 20%.With respect to existing structure, performance significantly improves.High direct voltage scope after conversion is generally the positive and negative 20% of 380*1.414, i.e. 429V ~ 645V.
Claims (1)
1. three-phase alternating current civil power conversion high direct voltage is directly driven LED road lighting method, by three-phase full wave rectifier circuit and more than four groups high direct voltages, directly driving LED street lamp forms, wherein three-phase full wave rectifier circuit by three phase full wave rectification bridge B1 form, three three-phase alternating current mains electricity input end mouths of three-phase full wave rectifier circuit are followed successively by first input end mouth Vin1, the second input port Vin2 and the 3rd input port Vin3, two DC high-voltage output end mouths of three-phase full wave rectifier circuit are followed successively by high direct voltage port VH and with reference to ground port GND, high direct voltage is directly driven LED street lamp and is comprised of normal bright LED lamp group electronic circuit and controlled LED lamp group electronic circuit more than two, normal bright LED lamp group electronic circuit is the LED of one group of series aiding connection, it is the head end of normal bright LED lamp group electronic circuit that the electric current of normal bright LED lamp group electronic circuit flows into end, this head end is the high direct voltage port VH that high direct voltage is directly driven LED street lamp, and the outflow of bus current end of normal bright LED lamp group electronic circuit is the tail end of this normal bright LED lamp group electronic circuit, each controlled LED lamp group electronic circuit includes a LED that directly drives LED integrated circuit U, a current sampling resistor Rs and one group of series aiding connection, the described LED integrated circuit U that directly drives contains three ports, is followed successively by switch control port U1, current sample port U2 and zero potential reference port U3, in each controlled LED lamp group electronic circuit, it is the head end of this controlled LED lamp group electronic circuit that the electric current of controlled LED lamp group electronic circuit flows into end, tail end and the current sample port U2 of the LED of series aiding connection in this controlled LED lamp group electronic circuit, one end of current sampling resistor Rs is connected, the other end of current sampling resistor Rs is connected with zero potential reference port U3, outflow of bus current end for this controlled LED lamp group electronic circuit, as the tail end of this controlled LED lamp group electronic circuit, above-mentioned normal bright LED lamp group electronic circuit and several controlled LED lamp group electronic circuit are cascaded successively, the other end of the current sampling resistor Rs of last controlled LED lamp group electronic circuit is connected with driving the reference ground port GND of high direct voltage with zero potential reference port U3, it is all parallel with one another between LED street lamp that high direct voltage is directly driven, by road lamp electric cable respectively with the output of three phase full wave rectification device, be that high direct voltage port VH is connected with reference ground port GND, it is characterized in that: the direct driving LED street lamp of three-phase alternating current full-wave rectification gained high direct voltage, this high direct voltage directly drive LED street lamp by the LED of series aiding connection as load, and according to the transient current size that flows through LED load, the number of LED load is carried out to grading control by application-specific integrated circuit (ASIC), to guarantee to flow through at any time the transient current substantially constant of LED load.
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| CN104135804A (en) * | 2014-08-14 | 2014-11-05 | 合肥云杉光电科技有限公司 | Three-phase power rectification LC high-PF filtering direct-current high-voltage direct-drive LED circuit |
| CN104302070A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit |
| CN104302071A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | High-voltage direct-drive LED (light-emitting diode) illumination system |
| CN104302073A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit |
| CN104302075A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit |
| CN104302074A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit |
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| CN104320892A (en) * | 2014-11-11 | 2015-01-28 | 杭州华普永明光电股份有限公司 | Direct drive LED lighting system controlled by integrated control circuit |
| CN105305854A (en) * | 2015-11-23 | 2016-02-03 | 上海泓语电气技术有限公司 | LED illumination driving power supply system for high-voltage AC system |
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| CN104302074A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit |
| CN104302072A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit |
| CN104320890A (en) * | 2014-11-11 | 2015-01-28 | 杭州华普永明光电股份有限公司 | High-voltage direct-drive LED illuminating system |
| CN104302075A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit |
| CN104320892A (en) * | 2014-11-11 | 2015-01-28 | 杭州华普永明光电股份有限公司 | Direct drive LED lighting system controlled by integrated control circuit |
| CN104302073A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit |
| CN104302071A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | High-voltage direct-drive LED (light-emitting diode) illumination system |
| CN104302070A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit |
| CN105848380A (en) * | 2014-12-24 | 2016-08-10 | 首尔半导体株式会社 | LED illuminating device for three-phase alternating current (AC) power supply and LED illuminating system |
| CN105305854A (en) * | 2015-11-23 | 2016-02-03 | 上海泓语电气技术有限公司 | LED illumination driving power supply system for high-voltage AC system |
| CN114126152A (en) * | 2022-01-26 | 2022-03-01 | 杭州易会通科技有限公司 | Integrated circuit and driving circuit for three-phase alternating current commercial power LED tunnel lamp |
| WO2023143001A1 (en) * | 2022-01-26 | 2023-08-03 | 杭州易会通科技有限公司 | Integrated circuit and driving application circuit for led tunnel lamp using three-phase alternating-current mains power supply |
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Application publication date: 20140409 |