CN102917507B - A kind of high-powered LED lamp power supply with power factor compensation - Google Patents

A kind of high-powered LED lamp power supply with power factor compensation Download PDF

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Publication number
CN102917507B
CN102917507B CN201210427304.7A CN201210427304A CN102917507B CN 102917507 B CN102917507 B CN 102917507B CN 201210427304 A CN201210427304 A CN 201210427304A CN 102917507 B CN102917507 B CN 102917507B
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China
Prior art keywords
power
factor compensation
modular
power supply
power factor
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Expired - Fee Related
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CN201210427304.7A
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Chinese (zh)
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CN102917507A (en
Inventor
罗耀光
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HUNAN HULIANAN HIGH-TECH ENERGY-SAVING ENGINEERING Co Ltd
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HUNAN HULIANAN HIGH-TECH ENERGY-SAVING ENGINEERING Co Ltd
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Priority to CN2010105404588A priority Critical patent/CN101977468B/en
Priority to CN201210427304.7A priority patent/CN102917507B/en
Publication of CN102917507A publication Critical patent/CN102917507A/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
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The present invention relates to a kind of high-powered LED lamp power supply with power factor compensation.It comprises AC power, multiple AC-DC power supply module and great power LED array, the ac input end of all AC-DC power supply modules is also received on the port of alternating-current voltage source, the ground wire of ac input end is directly connected with lamp outer casing with the ground wire of modular power source output, the DC output end of each modular power source is connected with a great power LED array respectively, and AC-DC power supply module adopts the single-stage AC-DC modular power source of band power factor compensation.Adopt the single-stage AC-DC modular power source of respective free band power factor compensation to power to LED array battle array respectively in the present invention, substantially increase reliability and the useful life of high-power LED lamp.

Description

A kind of high-powered LED lamp power supply with power factor compensation
The application is the divisional application of application number 201010540458.8, November 11 2010 applying date, denomination of invention " a kind of high-powered LED lamp power supply with power factor compensation ".
Technical field
The present invention relates to a kind of power supply of LED, is a kind of high-powered LED lamp power supply with power factor compensation in particular.
Background technology
At present, based on the develop rapidly of modern semiconductor technology, high-power LED lamp is widely used at commercial and industrial circle in recent years.Utilizing high power LED lamp in the illumination system, its major advantage is can in its whole life period energy-saving and emission-reduction greatly, and this will have far-reaching impact to the economic long-run development of China.If use proper, high-power illumination equipment is more much longer than traditional high pressure sodium lamp life-span.But because high-powered LED lamp is semiconductor device, if design or improper use also will cause device premature breakdown, cause unnecessary communal facility service disruption.The initial outlay price of current LED lamp is still far away higher than traditional light fixture, and the object that reach LED lamp energy-saving and emission-reduction just must increase the reliability of LED illumination System.
Even state-of-the-art single led lamp also only provides the lumen degree of seldom amount.As the illumination same with conventional high-tension sodium vapor lamp need be reached, numerous LED must be used together.The method of the multiple LED lamp tube of traditional connection generally comprises being connected in series as shown in Figure 1, connection in series-parallel as shown in Figures 2 and 3 connects.Being connected in series a large amount of great power LED pipes to reach the illumination same with conventional high-tension sodium vapor lamp is often infeasible in actual applications, there is two problems in this series system, one: power supply or LED driver need very high VD, this can add difficult design for meeting safety standard, produces unnecessary trouble to field service simultaneously.Its two: if having LED to damage in a string LED cause open circuit, whole light fixture just can extinguish.
In parallel or connection in series-parallel also also exists other shortcomings.Because great power LED pipe needs constant current to run, a LED pipe short circuit or open failure can cause electric current to redistribute in each branch of every other parallel connection and series connection.Electric current can increase more at high current branch, and result causes light fixture local temperature to raise, and causes electric current more uneven successively, continues to rise down to local temperature, and finally, a LED pipe is damaged and local or whole LED pipe electricity can be caused to damage or cause thermal damage.This damage mechanism is more serious than the first situation about damaging above.
Summary of the invention
The object of the invention is to the deficiency overcome in prior art, the high-powered LED lamp power supply of the band power factor compensation of a kind of high efficiency, high reliability is provided.
In order to solve the problems of the technologies described above, the present invention adopts following technical proposals: a kind of high-powered LED lamp power supply with power factor compensation, it is characterized in that: comprise AC power, multiple AC-DC modular power source and great power LED array, the ac input end of all AC-DC modular power sources is also received on the port of AC power, the ground wire of ac input end is directly connected with lamp outer casing with the ground wire of modular power source output, and the DC output end of each modular power source is connected with a great power LED array respectively, electronic timer and switch is also connected with between described ac power input end and AC-DC modular power source, described AC-DC modular power source is the single-stage AC-DC modular power source of band power factor compensation, the single-stage AC-DC modular power source of described band power factor compensation comprises electromagnetic interface filter, full-wave rectifier, power factor compensation and isolated DC-DC converter, great power LED array, former limit control module, isolation module and secondary control module, described electromagnetic interface filter, full-wave rectifier, power factor compensation and isolated DC-DC converter are connected successively with great power LED array, the output of secondary control module, isolation module is connected successively with the input of former limit control module, secondary control module input is connected with the DC output end of power factor compensation and isolated DC-DC converter, former limit control module output is connected with power factor compensation and isolated DC-DC converter.
Owing to adopting technique scheme, the invention has the beneficial effects as follows: several LED array battle arrays that are identical but that have separate AC-DC power supply module to be connected with some number tandem respectively connect, the corresponding a string LED array battle array of each AC-DC power supply module, the LED array battle array that makes often to go here and there can high efficiencyly operate, and does not affect the running as usual of other modular power source when turning off a modular power source; And electronic timer and switch is also connected with between ac power input end and N block AC-DC power supply module, a certain partial power of light fixture can be turned off within the time preset, reach energy-conservation effect.
Accompanying drawing explanation
Fig. 1 is the structural representation that the high-powered LED lamp power sources in series mode of traditional band power factor compensation connects.
Fig. 2 is the structural representation of the high-powered LED lamp power supply series-parallel system connection of traditional band power factor compensation.
Fig. 3 is the structural representation of the another kind of series-parallel system connection of high-powered LED lamp power supply of traditional band power factor compensation.
Fig. 4 is structural representation of the present invention.
Fig. 5 is the high-powered LED lamp power supply architecture schematic diagram of the band power factor compensation with darkening in the present invention.
Fig. 6 is the typical AC-DC power supply block diagram not with power factor compensation in the present invention.
Fig. 7 is the typical AC-DC power supply block diagram with power factor compensation in the present invention.
Fig. 8 is the single-stage AC-DC power supply block diagram with power factor compensation in the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
As shown in Figure 4, be a kind of structural representation of the high-powered LED lamp power supply with power factor compensation in the present invention, it indicates with system 400.It by some identical but independently AC-DC power supply module form, be denoted as 401 respectively, 402,403 ... etc..In light fixture, the quantity of modular power source can increase can subtract according to designing requirement, and the ac input end of each modular power source is all parallel-connected on the port of alternating-current voltage source.The ground wire of the ground wire of ac input end and modular power source (401,402,403 ... etc.) output is directly connected to meet security regulations with lamp outer casing.The output of each modular power source is that direct current exports, and it is only connected with a LED array battle array, so the driving of each LED array battle array has the current circuit of oneself, is only just connected to ground at each modular power source negative terminal equipped at outlet port.410,411,412 ... etc. are all identical great power LED arrays, and often going here and there the quantity of LED pipe can be different from heat dissipation equipment maximum permissible value according to illuminance, light fixture Machine Design.Although the LED pipe in every whole string is all series connection, it is flexibility and changeability that the internal electric of in fact every substring LED connects, and can realize like this reaching approximate uniform illumination while darkening is run in different applications.Because each great power LED string is drive, between each LED array battle array, the contingent phenomenon that light fixture finally can be caused to damage because of forward voltage and current characteristics mismatch can not occur in the present system.In arbitrary LED lamp, or when arbitrary modular power source damages, light fixture still can continue to run, and can not extinguish completely.
As shown in Figure 5, the structural representation of the high-powered LED lamp power supply darkening of band power factor compensation is realized for a kind of straightforward procedure.Compared to Figure 1, Fig. 2 merely add a timer 1001 and a switch S.In this example, switch S is connected to the ac input end of modular power source 2.Its effect is under the control of timer 1001, according to presetting, turns off the power supply of a light fixture part.Owing to being mutually independently between modular power source each in light fixture and other modular power sources, and the design of modular power source under given LED load with peak efficiency running, so turn off a modular power source do not affect the running as usual of other modular power sources.The present invention can realize light fixture darkening easily, reaches energy-conservation effect, and the running of whole light fixture still can keep required power supply conversion efficiency and power factor.
As shown in Figure 6, be the functional-block diagram of the power supply 500 of typical case not with power factor compensation.It is represented by Electricity Functional square frame 501-508 respectively: 501 is electromagnetic interface filter, can effectively suppress the High-frequency Interference in AC network on the impact of equipment, 502 is full-wave rectifier, AC rectification by filtering is become direct current, 503 is isolated DC-DC converter, direct current is become another fixed voltage, the direct current of constant current, for great power LED provides stable constant voltage, constant-current dc electricity, 504 is great power LED array, multiple LED is connected in series, form one group of light emitting module, 505 is secondary control module, be responsible for the control of synchronous rectification, 506 is isolation module, for signal isolation and anti-interference, 507 is former limit control module, it utilizes former limit feedback operation principle, to ensure galvanic constant voltage, constant current accuracy, 508 is massive store capacitor, have and stabilize current capacity, play peak clipping, fill out the effect of paddy.Based on the operation principle of full-wave rectifier 502 to massive store capacitor 508, the electric current of ac input end comprises first-harmonic and a large amount of high order harmonic components.Wherein only have fundametal compoment to participate in exchanging the Energy Transfer being input to DC output end, and the existence of high order harmonic component make the effective value of mains input current increase.This electric current can cause unnecessary power loss in ac power supply system, so for LED lamp, standard specifies that the input power of this reactive factor offset supply is limited to below 25W, to reach the object reducing transmission line harmonic pollution and distribution system energy loss.
As shown in Figure 7, be the functional-block diagram of the power supply 600 of typical case with power factor compensation.It is represented by Electricity Functional square frame 601-608 respectively: 601 is electromagnetic interface filter, can effectively suppress the High-frequency Interference in AC network on the impact of equipment, 602A is full-wave rectifier, AC rectification by filtering is become direct current, 602B is power factor compensation boosting (Boost) converter, can effective harmonic carcellation source, 603 is isolated DC-DC converter, direct current is become another fixed voltage, the direct current of constant current, for great power LED provides stable constant voltage, constant-current dc electricity, 604 is great power LED array, multiple LED is connected in series, form one group of light emitting module, 605 is secondary control module, be responsible for the control of synchronous rectification, 606 is isolation module, for signal isolation and anti-interference, 607 is former limit control module, it utilizes former limit feedback operation principle, to ensure galvanic constant voltage, constant current accuracy, 608 is massive store capacitor, have and stabilize current capacity, play peak clipping, fill out the effect of paddy.Compared with the power supply 500 in Fig. 6, add an extra power factor compensation converter 602B, to meet standard gauge provisioning request.Power-factor compensator 602B is generally boost converter, but voltage-dropping type or buck-boost type also can be used for this object.The input of booster converter is through the sine wave of full-wave rectification, and its output exports with the high voltage direct current of 608 stored energys.The isolated A.C.-D.C. converter of output supply subordinate of booster converter, it forms by 603,605,606 and 607.The circuit types of isolated interchange one DC converter is preferably determined according to inverter power size requirements.The general power of typical LED illumination lamp is only 25W-100W, and after increasing one-level pfc circuit, the cost of power supply will improve a lot.As shown in Figure 8, for being with single-stage AC-DC power supply 700 functional-block diagram of power factor compensation.701 is electromagnetic interface filter, can effectively suppress the High-frequency Interference in AC network on the impact of equipment, 702 is full-wave rectifier, AC rectification by filtering is become direct current, 703 is power factor compensation and isolated DC-DC converter, direct current is become another fixed voltage, the direct current of constant current, for great power LED provides stable constant voltage, constant-current dc electricity, and can effective harmonic carcellation source, 704 is great power LED array, multiple LED is connected in series, form one group of light emitting module, 705 is secondary control module, be responsible for the control of synchronous rectification, 706 is isolation module, for signal isolation and anti-interference, 707 is former limit control module, have and stabilize current capacity, play peak clipping, fill out the effect of paddy.In Fig. 8,602B in Fig. 6 is exchanged a DC converter 603 be integrated with isolation by power supply 700.This power supply does not have energy storage level 608 in Fig. 6, and its optimum output power scope is about 25W-80W.This design can offer the best performance cost ratio, can meet the technical requirement of most of LED lamp.

Claims (1)

1. the high-powered LED lamp power supply with power factor compensation, it is characterized in that: comprise AC power, multiple AC-DC modular power source and great power LED array, the ac input end of all AC-DC modular power sources is also received on the port of AC power, the ground wire of ac input end is directly connected with lamp outer casing with the ground wire of modular power source output, and the DC output end of each modular power source is connected with a great power LED array respectively, electronic timer and switch is also connected with between described ac power input end and AC-DC modular power source, described AC-DC modular power source is the single-stage AC-DC modular power source of band power factor compensation, the single-stage AC-DC modular power source of described band power factor compensation comprises electromagnetic interface filter, full-wave rectifier, power factor compensation and isolated DC-DC converter, great power LED array, former limit control module, isolation module and secondary control module, described electromagnetic interface filter, full-wave rectifier, power factor compensation and isolated DC-DC converter are connected successively with great power LED array, the output of secondary control module, isolation module is connected successively with the input of former limit control module, secondary control module input is connected with the DC output end of power factor compensation and isolated DC-DC converter, former limit control module output is connected with power factor compensation and isolated DC-DC converter.
CN201210427304.7A 2010-11-11 2010-11-11 A kind of high-powered LED lamp power supply with power factor compensation Expired - Fee Related CN102917507B (en)

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Application Number Priority Date Filing Date Title
CN2010105404588A CN101977468B (en) 2010-11-11 2010-11-11 Power supply module for high-power light-emitting diode (LED) lamp
CN201210427304.7A CN102917507B (en) 2010-11-11 2010-11-11 A kind of high-powered LED lamp power supply with power factor compensation

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CN201210427304.7A CN102917507B (en) 2010-11-11 2010-11-11 A kind of high-powered LED lamp power supply with power factor compensation

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CN102917507B true CN102917507B (en) 2016-03-02

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CN201210427304.7A Expired - Fee Related CN102917507B (en) 2010-11-11 2010-11-11 A kind of high-powered LED lamp power supply with power factor compensation
CN2010105404588A Expired - Fee Related CN101977468B (en) 2010-11-11 2010-11-11 Power supply module for high-power light-emitting diode (LED) lamp

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200946783Y (en) * 2006-08-18 2007-09-12 支忠 Wind-energy and solar energy complemented large power LED lighting lamp
CN101086325A (en) * 2006-11-21 2007-12-12 孙小安 LED lamp bulb
CN101277066A (en) * 2008-05-06 2008-10-01 深圳航天科技创新研究院 Multipath voltage regulation insulation type digital DC/DC power supply as well as control method
CN101309010A (en) * 2007-05-15 2008-11-19 张亦翔 Power factor compensator having LED lighting lamp

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200946783Y (en) * 2006-08-18 2007-09-12 支忠 Wind-energy and solar energy complemented large power LED lighting lamp
CN101086325A (en) * 2006-11-21 2007-12-12 孙小安 LED lamp bulb
CN101309010A (en) * 2007-05-15 2008-11-19 张亦翔 Power factor compensator having LED lighting lamp
CN101277066A (en) * 2008-05-06 2008-10-01 深圳航天科技创新研究院 Multipath voltage regulation insulation type digital DC/DC power supply as well as control method

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CN101977468A (en) 2011-02-16
CN102917506A (en) 2013-02-06
CN102917506B (en) 2015-07-08
CN101977468B (en) 2013-03-13

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