CN201418196Y - Big power electronic ballast - Google Patents

Big power electronic ballast Download PDF

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Publication number
CN201418196Y
CN201418196Y CN2009200323816U CN200920032381U CN201418196Y CN 201418196 Y CN201418196 Y CN 201418196Y CN 2009200323816 U CN2009200323816 U CN 2009200323816U CN 200920032381 U CN200920032381 U CN 200920032381U CN 201418196 Y CN201418196 Y CN 201418196Y
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CN
China
Prior art keywords
circuit
resistance
voltage
capacitor
diode
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Expired - Fee Related
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CN2009200323816U
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Chinese (zh)
Inventor
史永胜
张普雷
史耀华
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Shaanxi University of Science and Technology
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Shaanxi University of Science and Technology
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Priority to CN2009200323816U priority Critical patent/CN201418196Y/en
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Publication of CN201418196Y publication Critical patent/CN201418196Y/en
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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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

A big power electronic ballast comprises an EMI filter, a rectification circuit, a passive power factor correction circuit and a high frequency inversion circuit which are orderly connected, and is characterized in that the output end of the high frequency inversion circuit can simultaneously drag more than three fluorescent lamp tubes, each of the fluorescent lamp tubes is respectively connectedwith a filament preheating circuit and a lamp tube abnormal state protecting circuit in parallel, the power of the electronic ballast can reach more than 600 W, and most can simultaneously drag fifteen T8/36 W fluorescent lamp tubes, compared with one-for-one and one-for-two electronic ballasts, the ballast has obvious cost advantage, further has the functions of filament preheating, lamp tube abnormal state protection, overvoltage, under-voltage and overload protection and the like, and is especially suitable for the occasions which simultaneously need the more than a dozen or dozens of fluorescent lamps to illuminate, such as stores, factories, offices and the like.

Description

A kind of great-power electronic ballast
Technical field
The utility model belongs to the Ballasts Used in Fluorescent Light field, relates to a kind of electric ballast, especially a kind of great-power electronic ballast that is used for the parallel connection of many fluorescent tubes.
Background technology
In occasions such as office, factory floor, market, classrooms, often need tens even tens fluorescent lamps could satisfy lighting requirement.Existing electronic ballast for fluoresent lamp can only drag two fluorescent tubes at most simultaneously on the market, and the electric ballast that can drag three above fluorescent tubes simultaneously is also rarely found.If a megastore needs 100 fluorescent lightings, at least also need 50 electric ballasts.If can develop the great-power electronic ballast that can drag tens fluorescent tubes simultaneously, not only can reduce the use amount of electric ballast significantly, and can significantly reduce the cost of electric ballast, improve the efficient of electric ballast.
The utility model content
The purpose of this utility model is to overcome the shortcoming of prior art, a kind of great-power electronic ballast that is used for the parallel connection of many fluorescent tubes is provided, and this great-power electronic ballast can drag a plurality of fluorescent tubes simultaneously, not only can reduce the use amount of electric ballast, and the efficient height, cost is low.
The purpose of this utility model solves by the following technical programs:
This great-power electronic ballast, comprise the electromagnetic interface filter, rectification circuit, passive power factor correcting circuit and the high-frequency inverter circuit that connect successively, the output of described high-frequency inverter circuit drags 3～15 fluorescent tubes simultaneously by inductive bank, and described fluorescent tube is T8/36W; All be parallel with filament preheating circuit and abnormal condition of lamp tube state protection circuit on every described fluorescent tube; Described filament preheating circuit is composed in series by a PTC thermistor and piezo-resistance; Described abnormal condition of lamp tube state protection circuit is made up of the 2nd PTC thermistor and resonance capacitances in series;
Described high-frequency inverter circuit also is connected with the over-and under-voltage overload protecting circuit, and described over-and under-voltage overload protecting circuit comprises the four high guaily unit integrated circuit.
Described high-frequency inverter circuit is made up of self-oscillation half-bridge driven integrated circuit IR2153, first power supply and second source; Described first power supply is through the first resistance current limliting step-down with the voltage after the rectification circuit rectification, again by the first voltage stabilizing didoe voltage stabilizing, by the 9th electric capacity and the tenth capacitor filtering, obtain the 12V direct voltage and give self-oscillation half-bridge driven integrated circuit IR2153 power supply then; Described second source is made up of high frequency transformer, the 11 diode, the 3rd resistance, described high frequency transformer is connected on the output of high-frequency inverter circuit, the output voltage of high frequency transformer is through the 11 diode rectification, after the 3rd resistance current limliting step-down, give self-oscillation half-bridge driven integrated circuit IR2153 power supply.
Further, described four high guaily unit integrated circuit is LM339.
The occasion that needs tens fluorescent tube illuminations at the same time of the present utility model; can significantly reduce the cost of electric ballast; and have filament pre-heating and functions such as abnormal condition of lamp tube state protection, over-and under-voltage overload protection, effectively prolonged the life-span of electric ballast.
Description of drawings
Fig. 1 is a circuit diagram of the present utility model;
Wherein: 101 is electromagnetic interface filter; 102 is rectification circuit; 103 is passive power factor correcting circuit; 104 is high-frequency inverter circuit; 105 is the over-and under-voltage overload protecting circuit; 106 is filament preheating circuit; 107 is the abnormal condition of lamp tube state protection circuit; 108 are self-oscillation half-bridge driven integrated circuit IR2153; 109 is IC first power supply; 110 is the IC second source; 111 is inductive bank; 112 is fluorescent tube.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
As shown in Figure 1, this great-power electronic ballast comprises electromagnetic interface filter 101, rectification circuit 102, passive power factor correcting circuit 103 and the high-frequency inverter circuit 104 that connects successively, and the output of described high-frequency inverter circuit 104 can drag 3～15 fluorescent tubes 112 simultaneously; All be parallel with filament preheating circuit 106 and abnormal condition of lamp tube state protection circuit 107 on every fluorescent tube 112; Described filament preheating circuit 106 is composed in series by a PTC thermistor PTCa and piezo-resistance Rv; Described abnormal condition of lamp tube state protection circuit 107 is composed in series by the 2nd PTC thermistor PTCb and resonance capacitor C a; Described high-frequency inverter circuit 104 also is connected with over-and under-voltage overload protecting circuit 105, and described over-and under-voltage overload protecting circuit 105 comprises the four high guaily unit integrated circuit.
Below describe the composition and the annexation of each circuit in detail:
1) electromagnetic interface filter 101:
Wherein first capacitor C 1, second capacitor C 2, the first transformer T1 form electromagnetic interface filter 101, the two ends of first capacitor C 1 connect the first transformer T1, the first transformer T1 connects second capacitor C 2, is connected with the input of rectification circuit 102 by the two ends of second capacitor C 2.
2) rectification circuit 102:
Connect to form rectifier bridge by first to fourth diode D1-D4, electric main is converted to direct current exports to following each circuit.
3) passive power factor correcting circuit 103:
The the 5th to eight diode D5, D6, D7, D8 and the 3rd to eight capacitor C 3, C4, C5, C6, C7, C8 form two-way confession accessory power supply formula (dual-pump circuit) pfc circuit, be after passive power factor correcting circuit 103, the three capacitor C 3 and 4 parallel connections of the 4th capacitor C again and the 5th diode D5 series connection between the both positive and negative polarity of the output of rectification circuit 102; The 5th capacitor C 5 is connected with the 6th capacitor C 6, and an end of the 6th capacitor C 6 is connected with the negative pole of output end of rectification circuit 102; One end of the 5th capacitor C 5 also is connected with the output head anode of rectification circuit 102 and the drain electrode of the first metal-oxide-semiconductor Q1; The negative pole of the 6th diode D6 is connected with the positive pole of the 5th diode D5, and the positive pole of the 6th diode D6 is connected with the other end of the 6th capacitor C 6; The negative pole of the 7th diode D7 is connected with the positive pole of the 6th diode D6, and the positive pole of the 7th diode D7 is connected with the negative pole of the 8th diode D8; The 7th capacitor C 7 and the 8 first parallel connections of the 8th capacitor C are connected between rectification circuit 102 output positive and negative charges again with after the 8th diode D8 connects.Wherein the 3rd capacitor C 3 and the 7th capacitor C 7 are preferably selected electric ballast electrolysis special electric capacity for use, otherwise can shorten the life-span of electric ballast.The the 4th to six capacitor C 4, C5, C6 and the 8th capacitor C 8 should be selected the little polypropylene film capacitor of loss for use.
4) high-frequency inverter circuit 104:
Comprise vibration half-bridge driven integrated circuit IR2153, IC first power supply 109, IC second source 110 and other elements; The annexation of each pin of IR2153 is like this: 1 pin of IR2153 not only is connected with the negative pole of the 9th diode D9, also the positive pole with difference the 9th capacitor C 9 and the tenth capacitor C 10 is connected, the negative pole of the 9th capacitor C 9 and the tenth capacitor C 10 is connected with the negative pole of output end of rectification circuit 2, and the first voltage stabilizing didoe Dz1 is in parallel with the 9th capacitor C 9; 2 pin are connected with the negative pole of output end of rectification circuit 2 with the 11 capacitor C 11 through second resistance R 2; 3 pin are connected between second resistance R 2 and the 11 capacitor C 11; 4 pin directly are connected with the negative pole of output end of rectification circuit 102; 5 pin are connected with the grid of the second metal-oxide-semiconductor Q2; 6 pin are connected with the source electrode of the first metal-oxide-semiconductor Q1; 7 pin are connected with the grid of the first metal-oxide-semiconductor Q1; 8 pin are connected with 5 pin through the 12 capacitor C 12; Also be connected with the tenth diode D10 between 8 pin and 1 pin, wherein the negative pole of the tenth diode D10 is connected with 8 pin.IR2153 adopts dual power supply, and IC first power supply 109 is through first resistance R with the voltage after rectification circuit 102 rectifications 1The current limliting step-down is again by the first voltage-stabiliser tube Dz1 voltage stabilizing, then by the 9th capacitor C 9 and 10 filtering of the tenth capacitor C, obtaining the 12V direct voltage powers to IR2153, if only adopt this power supply to power to IR2153, guarantee that IR2153 work is no problem, but first resistance R 1On will consume the power of nearly 3W, cause first resistance R 1Temperature is higher, not only can reduce the efficient of circuit, and might cause first resistance R 1Because of high temperature damages.Therefore, having designed IC second source 110 again powers to IR2153, IC second source 110 is made up of high frequency transformer T2, the 11 diode D11, the 3rd resistance R 3, high frequency transformer T2 is connected on the output of high-frequency inverter circuit, one end of its primary coil is connected with the primary coil of the second transformer T3, and the other end of primary coil is connected with 6 pin of IR2153 and the source electrode of the first metal-oxide-semiconductor Q1 respectively; One end ground connection of its secondary coil, the other end is connected with the positive pole of the 11 diode D11, and the negative pole of the 11 diode D11 is connected with an end of the 3rd resistance R 3, and the other end of the 3rd resistance R 3 is connected with 1 pin of IR2153.The output voltage of high frequency transformer T2 after the 3 current limliting step-downs of the 3rd resistance R, is connected to first pin of IR2153 through the 11 diode D11 rectification, to the IR2153 power supply, solves the problem that first resistance R, 1 power consumption is excessive and generate heat.Like this, only when circuit was just started working, to the IR2153 power supply, after the circuit operate as normal, to the IR2153 power supply, the 9th diode D9 plays duplicate supply to be isolated by IC second source 110 by IC first power supply 109.Second resistance R 2 and the 11 capacitor C 11 are adjusted element for frequency of oscillation, and frequency of oscillation is:
f = 1 1.38 ( R 2 + 75 ) C 11
The tenth diode D10 is a bootstrap diode, and to the charging of bootstrap capacitor the 12 capacitor C 12, for the high-side driver level of IR2153 inside provides DC power supply, the tenth diode D10 will select fast recovery diode for use.The first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 are field-effect transistor, the CoolMOS field-effect transistor of preferably selecting for use company of Infineon to produce, the distinguishing feature of CoolMOS field-effect transistor be conducting resistance well below common MOS field-effect transistor, can reduce the switching loss of MOS transistor significantly.Can certainly use the common MOS field-effect transistor of models such as IRF450, but switching loss has certain increase.
5) fluorescent tube 112 and inductive bank 111:
As Fig. 1, inductive bank 111 is made up of several inductance L 1, L2, L3......Ln, one end of each inductance is connected with the output of high-frequency inverter circuit 104, the other end is connected with a fluorescent tube 112 respectively, for example L1 is connected with an end of one of them fluorescent tube 112 1 head lamp silk, and an end of the other end filament of fluorescent tube 112 is connected between the 6th capacitor C 6 and the 5th capacitor C 5 by lead; The connected mode of all the other inductance L 2, L3...Ln is identical with inductance L 1.The utility model can connect 3 to 15 fluorescent tubes 112.
6) filament preheating circuit 106 and abnormal condition of lamp tube state protection circuit 107:
The one PTC thermistor PTCa and piezo-resistance Rv series connection back are in parallel with fluorescent tube 112, form filament preheating circuit 106, play filament pre-heating, to improve the life-span of fluorescent tube; The 2nd PTC thermistor PTCb and resonance capacitor C a series connection back and fluorescent tube 112 formation abnormal condition of lamp tube state protection circuits 107 in parallel.At fluorescent tube 112 before build-up of luminance is not lighted, the voltage at resonant capacitance Ca two ends is higher, be enough to make piezo-resistance Rv to puncture, electric current is by a PTC thermistor PTCa, with filament pre-heating, in case after a PTC thermistor PTCa resistance becomes greatly, lamp lighting-up is lighted, and the voltage at resonant capacitance Ca two ends reduces, and piezo-resistance Rv no longer can be breakdown, and being the high resistant open-circuit condition, a PTC thermistor PTCa no longer includes electric current and flows through.That connect with resonant capacitance Ca is abnormal condition of lamp tube state protection the 2nd PTC thermistor PTCb; when abnormality such as aging or lamp tube air leaking occurring when fluorescent tube; the fluorescent tube cisco unity malfunction; ballast inductance L1 and resonance capacitor C a are in resonance condition; the electric current of LC series resonant circuit can be elevated to 3 to 5 times of normal current; at this moment because the 2nd PTC thermistor PTCb flows through big electric current; temperature raises rapidly; resistance constantly increases; force LC series resonant circuit failure of oscillation; thereby cut off high voltage and big electric current, protected switching device in the oscillator.Should be noted that the 2nd PTC thermistor PTCb must not use common PTC, should use the special-purpose PTC of electric ballast.At present; the domestic existing such PTC of a plurality of manufacturer production; the special-purpose high molecular PTC of the electric ballast that Shanghai Keter Polymer Material Co., Ltd. produces can for referencely be used; the abnormal condition of lamp tube state protection circuit that adopts PTC to be made up of elements such as controllable silicon, transistors as abnormal condition of lamp tube state protection and traditional employing is compared, and has advantages such as cost is low, circuit simple, debugging is easy.
7) the over-and under-voltage overload protecting circuit 105:
Be made up of four high guaily unit integrated circuit LM339 and peripheral circuit thereof, concrete annexation divides three the tunnel by the voltage of the output head anode output of rectification circuit 102 as shown in FIG., and the first via is connected to circuit B end through the 4th resistance R 4, the 6th resistance R 6 and LED; The second the tunnel is connected to circuit B end through the 7th resistance R 7 and the 8th resistance R 8; Resistance the tenth resistance R 10 and the 11 resistance R 11 of series connection are connected on the B end to Third Road mutually through two.The 15 capacitor C 15 is in parallel with LED, and the second voltage stabilizing didoe DZ2 and 13 parallel connections of the 13 capacitor C are attempted by between A, the B end of circuit, and the 14 capacitor C 14 is in parallel with the 13 capacitor C 13, and the 1st pin of LM339 is connected on the A end by the 9th resistance R 9; The 2nd pin is connected on the A end by the 5th resistance R 5; The 3rd pin directly is connected with the B end; The 4th pin is connected the positive pole of LED, and the 4th pin, the 7th pin, the 8th pin and the 10th pin all are connected; The 5th pin not only is connected with the B end by the 16 capacitor C 16, also is connected between the 7th resistance R 7 and the 8th resistance R 8; The 6th pin not only is connected with the B end by the 17 capacitor C 17, also is connected between the tenth resistance R 10 and the 11 resistance R 11; The 9th pin is connected with the B end through the 13 resistance R 13; The 11st pin not only is connected with the B end by the 15 resistance R 15, also be connected with secondary coil one end of the 3rd transformer T3 with the 15 diode D15 by the 16 resistance R 16, the 18 capacitor C 18 is in parallel with the 15 resistance R 15, the negative pole that the negative pole of the 15 diode D15 also is connected with the 20 capacitor C 20, the 20 capacitor C 20 is connected with the B end; The 19 capacitor C 19 is in parallel with the 20 capacitor C 20; The 12nd pin is connected between the 4th resistance R 4 and the 6th resistance R 6, and the 12nd pin also is connected on the positive pole of the 13 capacitor C 13; The 13rd pin is connected with the A end by R14; The 14th pin not only is connected on the A end by R12, and also the base stage with triode Q3 is connected, and the emitter of described triode Q3 is connected with the B end, and the collector electrode of triode Q3 is connected with 1 pin of IR2153; Three output signals of the 1st pin, the 2nd pin and the 13rd pin are input to the 9th pin through the 12 diode D12, the 13 diode D13 and the 14 diode D14 respectively.One end of the secondary coil of the 3rd transformer T3 is connected with the negative pole of rectification circuit 102 outputs, one end is connected with the positive pole of the 15 diode D15, one end of the primary coil of described the 3rd transformer T3 is connected with inductive bank 111, and the other end is connected with the second transformer T2.
The operation principle of over-and under-voltage overload protecting circuit 105 is such:
Civil power through rectification circuit 102 rectifications after the 4 current limliting step-downs of the 4th resistance R, supply with LM339 through obtaining the 5.1V direct voltage after the second voltage stabilizing didoe DZ2 voltage stabilizing and the 13 capacitor C 13 and 14 filtering of the 14 capacitor C again, LED obtains the direct voltage of 1.4V after by the 6th resistance R 6 current limlitings, as with reference to voltage, connect the 4th, 7,8,10 pins of LM339 respectively here.Integrated transporting discharging IC1a is a relatively amplifier of overvoltage, voltage behind the commercial power rectification, after the 7th resistance R 7 and the 8th resistance R 8 dividing potential drops, voltage on the 8th resistance R 8 is supplied with the 5th pin of LM339, when the voltage of the 5th pin of LM339 during greater than the voltage of the 4th pin, the 2nd pin output high level, on the contrary be low level.Integrated transporting discharging IC1b is under-voltage relatively amplifier, after voltage behind the commercial power rectification passes through the tenth resistance R 10 and the 11 resistance R 11 dividing potential drops, voltage on the 11 resistance R 11 is supplied with the 6th pin of LM339, when the voltage on the 6th pin during less than the voltage on the 7th pin, the 1st pin output high level, on the contrary be low level.Integrated transporting discharging IC1d is an abnormal condition of lamp tube state protection amplifier; current sampling transformer of output termination T3 at high-frequency inverter circuit; again after over commutation, filtering, dividing potential drop; voltage on the 15 resistance R 15 is supplied with the 11st pin of LM339; the voltage of lamp tube ends raises when lamp works is undesired, and the voltage on the 11st pin increases, when surpassing the reference voltage of the 10th pin; the 13rd pin output high level, on the contrary be low level.Integrated transporting discharging IC1c comprehensively compares amplifier, when arbitrary signal of above-mentioned three signals is high level, and the 14th pin output high level, triode Q3 saturation conduction, with the dump of IR2153, circuit quits work.
Power output power of the present utility model can reach 600W; can drag 15 T8/36W fluorescent tubes simultaneously at most; compare with the one drag two electric ballast with existing one-to-one; not only have tangible cost advantage, also have filament pre-heating and functions such as abnormal condition of lamp tube state protection, over-and under-voltage overload protection.Be particularly suitable for market, factory, office etc. and need the occasion of tens or tens fluorescent lightings simultaneously.

Claims (4)

1. great-power electronic ballast, comprise the electromagnetic interface filter (101), rectification circuit (102), passive power factor correcting circuit (103) and the high-frequency inverter circuit (104) that connect successively, it is characterized in that described high-frequency inverter circuit (104) can drag 3～15 fluorescent tubes (112) simultaneously; All be parallel with filament preheating circuit (106) and abnormal condition of lamp tube state protection circuit (107) on every fluorescent tube (112); Described filament preheating circuit (106) is composed in series by a PTC thermistor (PTCa) and piezo-resistance (Rv); Described abnormal condition of lamp tube state protection circuit (107) is composed in series by the 2nd PTC thermistor (PTCb) and resonant capacitance (Ca); Described high-frequency inverter circuit (104) also is connected with over-and under-voltage overload protecting circuit (105), and described over-and under-voltage overload protecting circuit (105) comprises the four high guaily unit integrated circuit.
2. great-power electronic ballast according to claim 1 is characterized in that: described high-frequency inverter circuit (104) is made up of self-oscillation half-bridge driven integrated circuit IR2153, IC first power supply (109) and IC second source (110); Described first power supply (109) is through the step-down of first resistance (R1) current limliting with the voltage after rectification circuit (102) rectification, again by first diode (Dz1) voltage stabilizing, by the 9th electric capacity (C9) and the tenth electric capacity (C10) filtering, obtain the 12V direct voltage and give self-oscillation half-bridge driven integrated circuit IR2153 (108) power supply then; Described second source (110) is made up of high frequency transformer (T2), the 11 diode (D11), the 3rd resistance (R3), described high frequency transformer (T2) is connected on the output of high-frequency inverter circuit (104), the output voltage of high frequency transformer (T2) is through the 11 diode (D11) rectification, after the step-down of the 3rd resistance (R3) current limliting, give self-oscillation half-bridge driven integrated circuit IR2153 (108) power supply.
3. great-power electronic ballast according to claim 1 is characterized in that: described four high guaily unit integrated circuit is LM339.
4. great-power electronic ballast according to claim 1 is characterized in that: described fluorescent tube (112) is T8/36W.
CN2009200323816U 2009-03-27 2009-03-27 Big power electronic ballast Expired - Fee Related CN201418196Y (en)

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Application Number Priority Date Filing Date Title
CN2009200323816U CN201418196Y (en) 2009-03-27 2009-03-27 Big power electronic ballast

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Application Number Priority Date Filing Date Title
CN2009200323816U CN201418196Y (en) 2009-03-27 2009-03-27 Big power electronic ballast

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CN2009200323816U Expired - Fee Related CN201418196Y (en) 2009-03-27 2009-03-27 Big power electronic ballast

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103068133A (en) * 2012-12-25 2013-04-24 金尔富 Lamp tube starting circuit with ultra-long service life

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103068133A (en) * 2012-12-25 2013-04-24 金尔富 Lamp tube starting circuit with ultra-long service life
CN103068133B (en) * 2012-12-25 2014-12-17 金尔富 Lamp tube starting circuit with ultra-long service life

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Granted publication date: 20100303

Termination date: 20110327