CN102573252A - HID (High Intensity Discharge) electronic ballast - Google Patents
HID (High Intensity Discharge) electronic ballast Download PDFInfo
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- CN102573252A CN102573252A CN2011104549438A CN201110454943A CN102573252A CN 102573252 A CN102573252 A CN 102573252A CN 2011104549438 A CN2011104549438 A CN 2011104549438A CN 201110454943 A CN201110454943 A CN 201110454943A CN 102573252 A CN102573252 A CN 102573252A
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- 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
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- 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
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Abstract
The invention relates to an HID (High Intensity Discharge) electronic ballast, which comprises an EMI (Electro-Magnetic Interference) filtering and rectifying circuit, an active power factor correcting circuit, a high-frequency half-bridge inverter circuit, a lighting circuit and high-frequency half-bridge inversion driving circuit, and is characterized by further comprising a constant-power control circuit, wherein the input end of the constant-power control circuit is connected with the output end of the active power factor correcting circuit; the output end of the constant-power control circuit is connected with the high-frequency half-bridge inversion driving circuit; and the constant-power control circuit is used for acquiring current at the output end of the active power factor correcting circuit and outputting different control signals to the high-frequency half-bridge inversion driving circuit to adjust the working frequency of a control chip in the high-frequency half-bridge inversion driving circuit and realize correction and/or adjustment on the power of an HID bulb. Compared with the prior art, the HID electronic ballast has the advantages that: the constant-power control circuit is arranged, so that the HID electronic ballast provided by the invention has the characteristics of high reliability and capability of keeping stable work of the HID bulb.
Description
Technical field
The present invention relates to a kind of HID electric ballast.
Background technology
The worldwide energy crisis that occur the seventies in 20th century causes many companies to be devoted to the research of novel energy-conserving electric light source and alternating electron ballast.The fast development of semiconductor technology is that the research and development of alternating electron ballast provide precondition.At the end of the seventies, Dutch PHILIPS Co. takes the lead in having succeeded in developing the fluorescent lamp AC electron ballast, and this is a great innovation on the electric lighting development history.China starts from the mid-80 to the development of high-frequency ac electric ballast.Electronic ballast for fluoresent lamp is seen everywhere on the market at home at present, and electricity-saving lamp gets into huge numbers of families already; Application such as a lot of at home office buildings of fluorescent lamp T4, T5, T8 electric ballast, market, station have obtained the good energy-conservation economic benefit, and energy-conservation this theory in high-quality small power electric sub-ballast is rooted in the hearts of the people.Adopt the HID electric ballast of high-quality to substitute the Inductive ballast progressively realization that tradition falls behind.
Be old-fashioned Inductive ballast to high-power high voltage sodium vapor lamp and Metal halogen lamp on the market (being called for short HID) supporting ballast (more than the 150W) overwhelming majority of light source at present.The energy-conservation main method of inductance type ballast is to adopt electricity-saving appliance at present.Operation principle is: (220V) lights a lamp under normal civil power, under the situation that can reduce light-source brightness, regulates the input civil power and reduces input voltage, lamp power descended reach purpose of energy saving.But there is significant limitation in this kind dimming mode, and input voltage is minimum can not be less than 190V otherwise cause that easily the blow-out of light source turns off the light.Energy-conservation effect is limited to be had only about 10%.
The light-dimming method that great-power electronic ballast is commonly used at present mainly contains the voltage-control dimming method, transfers pulsewidth light modulation method (PWM), frequency modulation light modulation method (PFM).Relatively more commonly used is frequency modulation light modulation method, and promptly through the variation of control signal, the operating frequency that changes ballast is to reach the purpose of regulating output lamp power.At present a lot of frequency modulation light adjusting circuits are very complicated, and used components and parts are many, and the linearity is bad., the aging light tube electric voltage of HID bulb can not regulate power output accurately on a large scale when rising.
Summary of the invention
First technical problem to be solved by this invention is to above-mentioned prior art the HID electric ballast that a kind of reliability is high, can keep HID bulb working stability to be provided.
The further technical problem to be solved of the present invention provide a kind of not only reliability high, can keep HID bulb working stability, can also carry out the HID electric ballast of linearity light adjusting.
The present invention solves the technical scheme that above-mentioned first technical problem adopts: this HID electric ballast comprises
EMI filtering and rectification circuit, input links to each other with civil power, is used for radio frequency interference and electromagnetic interference from civil power are carried out filtering, inner radio frequency and the electromagnetic interference that produces of decay electric ballast, and will convert direct current to from the alternating current of civil power;
APFC, input links to each other with the output of EMI filtering and rectification circuit, is used to produce galvanic current;
The high frequency half bridge inverter circuit, input links to each other with the output of APFC, is used to generate the high-frequency alternating current that is fit to the work of HID bulb;
Lamp circuit, input links to each other with the output of said high frequency half bridge inverter circuit, is used to start the work of HID bulb;
The high frequency half bridge inverse changing driving circuit, output links to each other with the high frequency half bridge inverter circuit, is used to drive the work of high frequency half bridge inverter circuit;
It is characterized in that: also comprise
Constant-power control circuit; The input of this constant-power control circuit links to each other with the APFC output; The output of this constant-power control circuit links to each other with the high frequency half bridge inverse changing driving circuit; This constant-power control circuit is gathered the electric current of said APFC output; And export the Different control signal and give the high frequency half bridge inverse changing driving circuit, thereby regulate the operating frequency of control chip in the high frequency half bridge inverter circuit, the correction and/or the adjusting of realization HID bulb power.
Preferably; Said constant-power control circuit comprises current acquisition resistance, first resistance, adjustable resistance, the 3rd resistance, the 4th resistance, the 5th resistance, first electric capacity, second electric capacity, first operational amplifier, second operational amplifier; Wherein the two ends of current acquisition resistance are serially connected between the input of output and high frequency half bridge inverter circuit of APFC; First end of first resistance links to each other with first end of current acquisition resistance; First end of adjustable resistance links to each other with second end of first resistance, and second end of adjustable resistance links to each other with the inverting input of first operational amplifier, the in-phase input end ground connection of first operational amplifier; The output of first operational amplifier links to each other with the inverting input of second operational amplifier after connecting said the 4th resistance; The in-phase input end of second operational amplifier connects reference voltage, and the output of second operational amplifier links to each other with the high frequency half bridge inverse changing driving circuit; The two ends of the 3rd resistance link to each other with the inverting input of first operational amplifier and the output of first operational amplifier respectively; The two ends of first electric capacity are connected in parallel on the two ends of the 3rd resistance; The two ends of the 5th resistance link to each other with the inverting input of second operational amplifier and the output of second operational amplifier respectively; The two ends of second electric capacity are connected in parallel on the two ends of the 5th resistance.
The foregoing circuit operation principle is: current acquisition electrical resistance collection main circuit current signal; Change voltage signal into through first resistance, adjustable resistance; Provide negative feedback to amplify to first operational amplifier; Reference voltage with second operational amplifier compares then, obtains the variation that error signal causes the second operational amplifier output level, regulates the correction of the operating frequency realization HID lamp power of control chip in the high frequency half bridge inverter circuit then through the high frequency half bridge inverse changing driving circuit.Adjustable resistance can be used for proofreading and correct the setting power of HID lamp.
Know that by above-mentioned permanent power control principle the operating frequency that changes the high-frequency inversion half-bridge can realize the adjusting (being light modulation) of lamp power.But because HID lamp pipe in the process of work is pressed and can be raise on a large scale; Manage when dispatching from the factory like the high-pressure sodium lamp bulb of 400W and to be pressed in about 95V-100V, can rise to 160V even higher (at this moment lamp still can operate as normal) at the aging back light tube electric voltage that works long hours; If directly regulate the operating frequency of high frequency half bridge inverter circuit and can bring the very big problem of light modulation power error this moment; Like the 400W fluorescent tube; 50% light modulation was 200W when pipe was pressed 100V; This moment, 50% light modulation power can much reach about 300W than 200W height when managing voltage rise to 160V, fell far short with the dimming effect of imagining.
In order to solve the problems of the technologies described above, the present invention solves the technical scheme that above-mentioned further technical problem adopts and is: HID electric ballast provided by the invention also comprises
Light adjusting circuit is used to export dimming control signal;
Dimming interface circuit, the input of dimming interface circuit links to each other with the output of light adjusting circuit, and the output of dimming interface circuit links to each other with said constant-power control circuit.
Preferably; Said dimming interface circuit comprises first divider resistance, second divider resistance, the 3rd divider resistance, the 4th divider resistance, first optocoupler, second optocoupler, and wherein first output of light adjusting circuit links to each other with first pin of first optocoupler after connecting first divider resistance; The second pin ground connection of first optocoupler; The 3rd pin of first optocoupler links to each other with the inverting input of said first operational amplifier after connecting second divider resistance; The 4th pin of first optocoupler connects and links to each other with second end of said first resistance; Second output of light adjusting circuit links to each other with first pin of second optocoupler after connecting the 3rd divider resistance; The second pin ground connection of second optocoupler; The 3rd pin of second optocoupler links to each other with the inverting input of said first operational amplifier after connecting the 4th divider resistance; The 4th pin of second optocoupler connects and links to each other with second end of said first resistance.
First optocoupler and second optocoupler are only made switch and are used; Second divider resistance, the 4th divider resistance seal in the output signal that the loop changes first operational amplifier when first optocoupler and the second optocoupler conducting; The output signal of second operational amplifier is changed; With the operating frequency of control chip in the change high frequency half bridge inverse changing driving circuit, thereby make electric ballast provided by the invention when light modulation is worked, also can realize the power of real-time stabilization fluorescent tube.And as needing more regulation stall, only need to increase suitable optocoupler and resistance and get final product.
Compared with prior art, the invention has the advantages that: owing to set up constant-power control circuit, make HID electric ballast provided by the invention, have the reliability height, can keep the characteristics of HID bulb working stability; In addition, increase light adjusting circuit and dimming interface circuit, can also carry out linearity to the HID bulb and stablize light modulation.
Description of drawings
Fig. 1 is the circuit block diagram of HID electric ballast in the embodiment of the invention;
Fig. 2 is the circuit theory diagrams of constant-power control circuit and dimming interface circuit in the embodiment of the invention.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
HID electric ballast as shown in Figure 1; It comprises EMI filtering and rectification circuit 1, APFC 2, high frequency half bridge inverter circuit 3, lamp circuit 4, high frequency half bridge inverse changing driving circuit 5, constant-power control circuit 6, light adjusting circuit 7 and dimming interface circuit 8; Wherein the input of EMI filtering and rectification circuit 1 links to each other with civil power; Be used for and carry out filtering from the radio frequency interference and the electromagnetic interference of civil power; Inner radio frequency and the electromagnetic interference that produces of decay electric ballast makes it to reach reasonable levels, and will convert direct current supply APFC 2 from the 90V-260V/50-60HZ alternating current of civil power to; The input of APFC 2 links to each other with the output of EMI filtering and rectification circuit, is used to produce galvanic current supply high frequency half-bridge inversion circuit 3; The input of high frequency half bridge inverter circuit 3 links to each other with the output of APFC 2, is used to generate the high-frequency alternating current that is fit to the work of HID bulb; The input of lamp circuit 4 links to each other with the output of high frequency half bridge inverter circuit 3, and utilization frequency sweep harmonic technology is accomplished the reliable startup of bulb; The output of high frequency half bridge inverse changing driving circuit 5 links to each other with high frequency half bridge inverter circuit 3, is used to drive 3 work of high frequency half bridge inverter circuit; Constant-power control circuit 6 inputs link to each other with the output of APFC 2; The output of constant-power control circuit 6 links to each other with high frequency half bridge inverse changing driving circuit 5; Constant-power control circuit 6 is gathered the electric current of said APFC 2 outputs; And export the Different control signal and give high frequency half bridge inverse changing driving circuit 5, thereby regulate the operating frequency of control chip in the high frequency half bridge inverse changing driving circuit 5, the correction and/or the adjusting of realization HID bulb power; Light adjusting circuit 7 is used to export dimming control signal; The input of dimming interface circuit 8 links to each other with the output of light adjusting circuit 7, and the output of dimming interface circuit 8 links to each other with said constant-power control circuit 6.
In the present embodiment; EMI filtering and rectification circuit 1, APFC 2, high frequency half bridge inverter circuit 3, lamp circuit 4, high frequency half bridge inverse changing driving circuit 5 and light adjusting circuit 7 all adopt custom circuit; Wherein light adjusting circuit 7 can adopt the control mode that digital-to-analogue is gathered, mode is changeable; The collection that is dim signal is by simple Realization of Analog Circuit, and the judgement of dim signal, the setting in light modulation cycle are by reliable technical grade chip microcontroller, and the variation of light modulation power is outputed signal to out by the single-chip microcomputer of technical grade; Finally accomplish, realize the brightness adjustment control of high accuracy, high linearity by reliable pwm chip frequency modulation control.
And constant-power control circuit 6 comprises current acquisition resistance R cs, first resistance R 1, adjustable resistance RX, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, first capacitor C 1, second capacitor C 2, the first operational amplifier OP1, the second operational amplifier OP2; Referring to shown in Figure 2; Wherein the two ends of current acquisition resistance R cs are serially connected between the input of output and high frequency half bridge inverter circuit of APFC; First end of first resistance R 1 links to each other with first end of current acquisition resistance R cs; First end of adjustable resistance RX links to each other with second end of first resistance R 1; Second end of adjustable resistance RX links to each other with the inverting input of the first operational amplifier OP1, the in-phase input end ground connection of the first operational amplifier OP1; The output of the first operational amplifier OP1 connects said the 4th resistance R 4 backs and links to each other with the inverting input of the second operational amplifier OP2; The in-phase input end of the second operational amplifier OP2 connects reference voltage, and the output of the second operational amplifier OP2 links to each other with the high frequency half bridge inverse changing driving circuit; The two ends of the 3rd resistance R 3 link to each other with the inverting input of the first operational amplifier OP1 and the output of the first operational amplifier OP1 respectively; The two ends of first capacitor C 1 are connected in parallel on the two ends of the 3rd resistance R 3; The two ends of the 5th resistance R 5 link to each other with the inverting input of the second operational amplifier OP2 and the output of the second operational amplifier OP2 respectively; The two ends of second capacitor C 2 are connected in parallel on the two ends of the 5th resistance R 5.
Current acquisition resistance R cs gathers the main circuit current signal; Change voltage signal into through first resistance R 1, adjustable resistance RX; Provide negative feedback to amplify to the first operational amplifier OP1; Reference voltage with the second operational amplifier OP2 compares then, obtains the variation that error signal causes the second operational amplifier OP2 output level, realizes the correction of lamp power with the operating frequency of regulating control chip in the high frequency half bridge inverter circuit.Adjustable resistance RX is used to proofread and correct the setting power of lamp.
The output signal of light adjusting circuit outputs to K1, K2 port; The first optocoupler U1, the second optocoupler U2 only make switch and use; The second divider resistance RT2; The 4th divider resistance RT4 resistance seals in the output signal that the loop changes the first operational amplifier OP1 when the first optocoupler U1, the second optocoupler U2 conducting, the output signal of the second operational amplifier OP2 is changed, to regulate the operating frequency of control chip in the high frequency half bridge inverter circuit., light modulation also can realize the power of real-time stabilization fluorescent tube when working.Like the more regulation stall of need, only need to increase suitable optocoupler and resistance and get final product.
Claims (4)
1. a HID electric ballast comprises
EMI filtering and rectification circuit, input links to each other with civil power, is used for radio frequency interference and electromagnetic interference from civil power are carried out filtering, inner radio frequency and the electromagnetic interference that produces of decay electric ballast, and will convert direct current to from the alternating current of civil power;
APFC, input links to each other with the output of EMI filtering and rectification circuit, is used to produce galvanic current;
The high frequency half bridge inverter circuit, input links to each other with the output of APFC, is used to generate the high-frequency alternating current that is fit to the work of HID bulb;
Lamp circuit, input links to each other with the output of said high frequency half bridge inverter circuit, is used to start the work of HID bulb;
The high frequency half bridge inverse changing driving circuit, output links to each other with the high frequency half bridge inverter circuit, is used to drive the work of high frequency half bridge inverter circuit;
It is characterized in that: also comprise
Constant-power control circuit; The input of this constant-power control circuit links to each other with the APFC output; The output of this constant-power control circuit links to each other with the high frequency half bridge inverse changing driving circuit; This constant-power control circuit is gathered the electric current of said APFC output; And export the Different control signal and give the high frequency half bridge inverse changing driving circuit, thereby regulate the operating frequency of control chip in the high frequency half bridge inverter circuit, the correction and/or the adjusting of realization HID bulb power.
2. HID electric ballast according to claim 1; It is characterized in that: said constant-power control circuit comprises current acquisition resistance (Rcs), first resistance (R1), adjustable resistance (RX), the 3rd resistance (R3), the 4th resistance (R4), the 5th resistance (R5), first electric capacity (C1), second electric capacity (C2), first operational amplifier (OP1), second operational amplifier (OP2); Wherein the two ends of current acquisition resistance (Rcs) are serially connected between the input of output and high frequency half bridge inverter circuit of APFC; First end of first resistance (R1) links to each other with first end of current acquisition resistance (Rcs); First end of adjustable resistance (RX) links to each other with second end of first resistance (R1); Second end of adjustable resistance (RX) links to each other with the inverting input of first operational amplifier (OP1), the in-phase input end ground connection of first operational amplifier (OP1); The output of first operational amplifier (OP1) connects said the 4th resistance (R4) back and links to each other with the inverting input of second operational amplifier (OP2); The in-phase input end of second operational amplifier (OP2) connects reference voltage, and the output of second operational amplifier (OP2) links to each other with the high frequency half bridge inverse changing driving circuit; The two ends of the 3rd resistance (R3) link to each other with the inverting input of first operational amplifier (OP1) and the output of first operational amplifier (OP1) respectively; The two ends of first electric capacity (C1) are connected in parallel on the two ends of the 3rd resistance (R3); The two ends of the 5th resistance (R5) link to each other with the inverting input of second operational amplifier (OP2) and the output of second operational amplifier (OP2) respectively; The two ends of second electric capacity (C2) are connected in parallel on the two ends of the 5th resistance (R5).
3. HID electric ballast according to claim 2 is characterized in that: also comprise
Light adjusting circuit is used to export dimming control signal;
Dimming interface circuit, the input of dimming interface circuit links to each other with the output of light adjusting circuit, and the output of dimming interface circuit links to each other with said constant-power control circuit.
4. HID electric ballast according to claim 3; It is characterized in that: said dimming interface circuit comprises first divider resistance (RT1), second divider resistance (RT2), the 3rd divider resistance (RT3), the 4th divider resistance (RT4), first optocoupler (U1), second optocoupler (U2), and wherein first output of light adjusting circuit links to each other with first pin of first optocoupler (U1) after connecting first divider resistance (RT1); The second pin ground connection of first optocoupler (U1); The 3rd pin of first optocoupler (U1) connects second divider resistance (RT2) back and links to each other with the inverting input of said first operational amplifier (OP1); The 4th pin of first optocoupler (U1) connects and links to each other with second end of said first resistance (R1); Second output of light adjusting circuit connects the 3rd divider resistance (RT3) back and links to each other with first pin of second optocoupler (U2); The second pin ground connection of second optocoupler (U2); The 3rd pin of second optocoupler (U2) connects the 4th divider resistance (RT4) back and links to each other with the inverting input of said first operational amplifier (OP1); The 4th pin of second optocoupler (U2) connects and links to each other with second end of said first resistance (R1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110454943.8A CN102573252B (en) | 2011-12-30 | 2011-12-30 | HID (High Intensity Discharge) electronic ballast |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110454943.8A CN102573252B (en) | 2011-12-30 | 2011-12-30 | HID (High Intensity Discharge) electronic ballast |
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| CN102573252A true CN102573252A (en) | 2012-07-11 |
| CN102573252B CN102573252B (en) | 2014-06-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152958A (en) * | 2013-03-07 | 2013-06-12 | 福建蓝蓝高科技发展有限公司 | HID (high-intensity-discharge) lamp high-frequency driving circuit |
| CN111988880A (en) * | 2020-08-18 | 2020-11-24 | 浙江宇光照明科技有限公司 | Constant-power ballast circuit with dimming function and control method |
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| CN103152958A (en) * | 2013-03-07 | 2013-06-12 | 福建蓝蓝高科技发展有限公司 | HID (high-intensity-discharge) lamp high-frequency driving circuit |
| CN103152958B (en) * | 2013-03-07 | 2015-04-22 | 福建蓝蓝高科技发展有限公司 | HID (high-intensity-discharge) lamp high-frequency driving circuit |
| CN111988880A (en) * | 2020-08-18 | 2020-11-24 | 浙江宇光照明科技有限公司 | Constant-power ballast circuit with dimming function and control method |
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| CN102573252B (en) | 2014-06-04 |
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Effective date of registration: 20160315 Address after: Beilun District of Zhejiang city in Ningbo province 315800 Kaohsiung streets Jiangnan East Road No. 179-4, 179-3 Patentee after: Ningbo Zhuo Shengxin Material Co., Ltd. Address before: 315800, -1, 98 Yongding Road, Xiapu street, Beilun District, Zhejiang, Ningbo Patentee before: NINGBO JINTAI NEW MATERIALS CO., LTD. |
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Effective date of registration: 20201224 Address after: 315800-37, workshop 1, building 1, No. 491, West Mingzhou Road, Xinqi, Beilun District, Ningbo City, Zhejiang Province Patentee after: Ningbo Fuji new materials Co.,Ltd. Address before: 315800 no.179-3, 179-4 Jiangnan East Road, Xiaogang street, Beilun District, Ningbo City, Zhejiang Province Patentee before: NINGBO ZHUOSHENG NEW MATERIAL Co.,Ltd. |
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