CN101801144A - LED illumination energy saving circuit - Google Patents

LED illumination energy saving circuit Download PDF

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Publication number
CN101801144A
CN101801144A CN201010147803A CN201010147803A CN101801144A CN 101801144 A CN101801144 A CN 101801144A CN 201010147803 A CN201010147803 A CN 201010147803A CN 201010147803 A CN201010147803 A CN 201010147803A CN 101801144 A CN101801144 A CN 101801144A
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CN
China
Prior art keywords
alternating current
led
phase
circuit
series
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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
Application number
CN201010147803A
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Chinese (zh)
Inventor
郑恩让
高飞
马令坤
张玲
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Shaanxi University of Science and Technology
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Shaanxi University of Science and Technology
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Publication date
Application filed by Shaanxi University of Science and Technology filed Critical Shaanxi University of Science and Technology
Priority to CN201010147803A priority Critical patent/CN101801144A/en
Publication of CN101801144A publication Critical patent/CN101801144A/en
Pending legal-status Critical Current

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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 invention relates to an LED illumination energy saving circuit, which comprises an LED array. The LED array is provided with a common end, a first AC input end and a second AC input end, wherein a plurality of forward series-wound circuit branches and backward series-wound circuit branches which are connected in parallel with one another are alternately connected between the first AC input end and the common end and between the second AC input end and the common end respectively; and the forward series-wound circuit branches and the backward series-wound circuit branches are formed by connecting in series a plurality of LEDs. A power supply of the circuit is directly taken from any two phases of three-phase AC current; and each circuit branch of the array is divided into two parts, pair numbers of the forward series-wound circuit branches and the backward series-wound circuit branches of the two parts are the same, one of the two parts is connected with one phase of the three-phase AC current, and the other of the two parts is connected with another phase of the three-phase AC current, and the other end of the two parts is connected to the common end of the three-phase AC. Therefore, the circuit can make full use of positive and negative half cycles of the AC current and can avoid luminance incoherence caused by the long disconnection time of the LED at the same time.

Description

A kind of LED illumination energy saving circuit
Technical field
The invention belongs to the LED field of illuminating device, relate to a kind of circuit of forming by LED, especially a kind of LED lighting circuit that designs based on energy-conservation purpose.
Background technology
In recent years, along with the continuous development of LED illumination components and parts, the LED illumination more and more is applied to fields such as signal indication, intelligent display, automobile lamp, Landscape Lighting and special lighting, and constantly to high-power, high efficiency, low light decay, long-life, the direction of low price develops.Traditional LED lighting circuit group will adopt the AC-DC mapping mode, promptly according to the principle of diode forward conducting, earlier electric main is passed through current rectifying and wave filtering circuit, is converted into the direct current that satisfies the LED running parameter, resupplies LED, makes its work luminous.The circuit design of this working method is comparatively complicated, includes current rectifying and wave filtering circuit, transformation element, voltage stabilizing components and parts, current-limiting resistance etc., makes it be not easy to install and use, and during circuit working because components and parts are more, line loss is also bigger.In addition, because the mode of connection in series-parallel combination is adopted in the connection of LED element more, in case the component wear of one tunnel series arm wherein, this branch road can not be worked, and reduce the luminous mass of integrated circuit.
The utility model content
It is comparatively complicated to the objective of the invention is to solve above-mentioned existing LED lighting circuit, be not easy to shortcomings such as installation and maintenance and use, a kind of LED illumination energy saving circuit is provided, this circuit saves rectification circuit, transformation components and parts, voltage stabilizing element and current-limiting resistance, directly obtain electric energy from three-phase alternating current, it is simple, energy-conservation to have a circuit, installation and maintenance is convenient, advantage such as should not damage.
The objective of the invention is to solve by the following technical programs:
This LED illumination energy saving circuit, comprise led array, it is characterized in that: described led array is provided with common port, the first alternating current input and the second alternating current input, between described first alternating current input and the common port, and second be connected with some parallel with one another and forward series arm and differential concatenation branch roads that alternately occur respectively between alternating current input and the common port, and described forward series arm and differential concatenation branch road all are to be composed in series by some LED.
Above-mentioned common port is connected with the common port of three-phase alternating current, and the described first alternating current input and the second alternating current input are connected respectively on the two ends in addition of three-phase alternating current except that common port.
This kind LED connected mode of the present invention has been simplified circuit greatly, directly reduced the circuit production cost, make installation and maintenance convenient, and components and parts such as rectifying and wave-filtering, voltage stabilizing, current limliting have been dispensed, significantly reduced the loss of line loss and components and parts, because each branch road all is a relation in parallel, avoided the shortcoming that other branch roads all can't be worked when component wear on a certain the branch road simultaneously.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is the power supply wave shape schematic diagram of three-phase alternating current of the present invention;
Fig. 3 is the practical layout exemplary graph of led array of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail:
Referring to Fig. 1, LED illumination energy saving circuit of the present invention, do not adopt rectification circuit, transformation components and parts, voltage stabilizing element and current-limiting resistance, but directly led array is received on the three-phase alternating current to obtain electric energy, can simplify the connection of circuit greatly, and reduced the line loss that is caused owing to the circuit complexity, thereby reach purpose of energy saving.Concrete structure is such: led array is provided with common port 102, the first alternating current input 101 and the second alternating current input 103, between the first alternating current input 101 and the common port 102, and second be connected with some parallel with one another and forward series arm A and differential concatenation branch road B that alternately occur respectively between alternating current input 103 and the common port 102, it is the mode in parallel that adopts between each branch road, the connected mode of the LED element on every branch road is alternately different, the i.e. series connection of LED element forward on branch road, the anti-phase series connection of LED element on the second branch road, replace down with this, the branch road of forward and differential concatenation occurs in pairs, to guarantee the even of luminosity.
Above forward series arm A and differential concatenation branch road B are composed in series by some LED.It is fixed that LED element number on each branch road can be come according to the concrete parameter of required brightness of reality and selected LED, and the brightness requirement height can increase LED element number on each branch road, opposite then reduce the number of LED element.In addition, because both end voltage is 220V on each branch road, suppose that the rated voltage of each LED is Vo, the element number on the branch road is N1, so N1=220/Vo.Suppose that the branch road number is N2, the main line electric current is I, and the rated current of LED is i, so branch road number N2=I/i.According to said method can design led array, comprise the element number N1 on each branch road according to actual conditions, and branch road number N2.
Any two-phase of three-phase alternating current is directly got in the power supply of array, is about to common port 102 and is connected with the common port of three-phase alternating current, and the first alternating current input 101 and the second alternating current input 103 are connected respectively on the two ends in addition of three-phase alternating current except that common port.The first alternating current input 101 and the second alternating current input 103 are divided into two parts with each branch road of array, the two-part branch road logarithm of just playing a reversed role is identical, a part connects a phase of three-phase alternating current in these two parts, another part connects another phase of three-phase alternating current, the two-part other end is all received the common port of three-phase alternating current, connect the positive-negative half-cycle that can make full use of alternating current like this, avoid long cause luminous discontinuous opening time of LED simultaneously.
The principle of above circuit working is as follows:
As Fig. 1, suppose the U phase of the first alternating current input, 101 termination three-phase alternating currents, common port 102 connects the common port of three-phase alternating current, and the second alternating current input 103 connects the W phase of three-phase alternating current.As Fig. 2, when the U phase voltage arrived 1 place and is LED conducting required voltage, the forward series arm that links to each other with U all began luminous, ends up to 4 places; Meanwhile W is in negative half-wave mutually, and also conducting is luminous for the forward series arm that links to each other with W at this moment, ends up to 2 places.Therefore all equal conducting of forward series arm is luminous between 1 and 2, has only U forward series arm conducting mutually between 2 and 3, and also all conducting is luminous for forward series arms all between 3 and 4.When U arrived 5 mutually, it is luminous that all differential concatenation branch roads that link to each other with U begin conducting, ended up to 8 o'clock; This moment, W was in positive half wave mutually, and also conducting is luminous for all anti-phase series arms that link to each other with W, ended up to 6 places, and when to 7 the time, the differential concatenation branch road begins luminous again.Therefore have only W luminous to series arm on the contrary between 4 to 5, differential concatenation branch roads all between 5 to 6 is all luminous, has only U luminous to series arm on the contrary between 6 to 7, and all differential concatenation branch roads are also all luminous between 7 to 8.Go down by this rule, because the three-phase alternating current frequency is 50HZ, so have only luminous time of branch road that is in series a lot, and frequency is very fast, naked eyes are difficult to distinguish that this of short duration light changes, thereby have reached continuous luminous purpose, have also avoided because the flicker that the LED conducting voltage is caused.
Fig. 3 is a kind of LED street lamp design of the circuit according to the present invention.
Its course of work is: this street lamp can directly obtain electric energy from three-phase alternating current, is led array power supply among the figure.201 is forward series arm A among the figure, and 202 is differential concatenation branch road B, and forward and reverse branch road space are evenly distributed on the inboard of lampshade 203.On-link mode (OLM) between each branch road is referring to the circuit theory diagrams of Fig. 1.Because the frequency of three-phase alternating current is 50HZ, so forward series arm and differential concatenation branch road alternate conduction are luminous, and the frequency of alternate conduction is 50HZ, so just can reach the continuous luminous purpose of led array.

Claims (2)

1. LED illumination energy saving circuit, comprise led array, it is characterized in that: described led array is provided with common port (102), the first alternating current input (101) and the second alternating current input (103), between described first alternating current input (101) and the common port (102), and second be connected with some parallel with one another and forward series arm (A) and differential concatenation branch roads (B) that alternately occur respectively between alternating current input (103) and the common port (102), and described forward series arm (A) and differential concatenation branch road (B) all are to be composed in series by some LED.
2. LED illumination energy saving circuit according to claim 1, it is characterized in that: described common port (102) is connected with the common port of three-phase alternating current, and the described first alternating current input (101) and the second alternating current input (103) are connected respectively on the two ends in addition of three-phase alternating current except that common port.
CN201010147803A 2010-04-16 2010-04-16 LED illumination energy saving circuit Pending CN101801144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010147803A CN101801144A (en) 2010-04-16 2010-04-16 LED illumination energy saving circuit

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Application Number Priority Date Filing Date Title
CN201010147803A CN101801144A (en) 2010-04-16 2010-04-16 LED illumination energy saving circuit

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CN101801144A true CN101801144A (en) 2010-08-11

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103179723A (en) * 2011-12-22 2013-06-26 海洋王照明科技股份有限公司 LED light drive circuit and LED lighting
CN103687142A (en) * 2012-09-11 2014-03-26 北京吉乐电子集团有限公司 Design method for light-emitting diode lamp directly driven by AC
CN103747563A (en) * 2013-12-17 2014-04-23 浙江师范大学 Method for driving LED with the use of alternating current

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101346826A (en) * 2005-12-22 2009-01-14 罗姆股份有限公司 Light emitting device and illumination instrument

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101346826A (en) * 2005-12-22 2009-01-14 罗姆股份有限公司 Light emitting device and illumination instrument

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103179723A (en) * 2011-12-22 2013-06-26 海洋王照明科技股份有限公司 LED light drive circuit and LED lighting
CN103179723B (en) * 2011-12-22 2016-03-30 海洋王照明科技股份有限公司 A kind of LED lamp drive circuit and light fixture
CN103687142A (en) * 2012-09-11 2014-03-26 北京吉乐电子集团有限公司 Design method for light-emitting diode lamp directly driven by AC
CN103747563A (en) * 2013-12-17 2014-04-23 浙江师范大学 Method for driving LED with the use of alternating current

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Application publication date: 20100811