CN1255823A - Electric power supply method and device for gas discharge lamps - Google Patents
Electric power supply method and device for gas discharge lamps Download PDFInfo
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- CN1255823A CN1255823A CN 99124132 CN99124132A CN1255823A CN 1255823 A CN1255823 A CN 1255823A CN 99124132 CN99124132 CN 99124132 CN 99124132 A CN99124132 A CN 99124132A CN 1255823 A CN1255823 A CN 1255823A
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Abstract
An electrica power supplying method and device for gas discharge lamp features that a transformer as power match unit is used as power supply is AC/AC frequency changing mode with FM characteristics, the electric field generated by higher harmonic of base frequency is applied to electrodes of lamp tube for triggering arc, whose current is controlled by the pulse frequency modulation caused by load with the frequency modulation range of 15-35 KHz, and high-frequency power match transformer is used as the load of AC/AC frequency changing power supply, whose secondary winding is connected to electrodes or filament of gas discharge lamp. Its advantages are high conversion efficiency, good start performance, long service life and saving energy.
Description
The present invention relates to a kind of by the circuit arrangement of high-frequency alternating current to the lamp power supply, particularly a kind of method of supplying power to of gaseous discharge lamp and device thereof.
Gaseous discharge lamp is a kind of luminous electric light source of gas discharge in the device pipe that relies on, its ideal operation district is negative resistance charactertistic, and promptly when the electric current that flows through device increased, the terminal voltage of device descended, if directly to the lamp power supply, then lamp can not stably be worked with stabilized power source.Traditional method is to connect an inductance type ballast in order to automatic adjustment lamp tube ends voltage in the power supply circuits of gaseous discharge lamp, the stable discharging electric current, this method of supplying power to economy, reliable, long service life, but have following shortcoming: (1) line power factor is low, be generally about 0.4, cause the power supply facilities utilization ratio low; (2) the inductance type ballast active loss is big, and the generation noise is in operation; (3) because the impedance of ballast is definite according to power of lamp tube, particularly resemble high-pressure sodium lamp, the such high-intensity gas discharge lamp of Metal halogen lamp, can't overcome the starting current that is several times as much as steady-state value that dynatron effect causes when starting and impact, directly influence line powering quality and fluorescent tube useful life; The gaseous discharge lamp of (4) 220 volts of 50Hz power supplies can produce stroboscopic effect inevitably.
In recent years, along with development of electronic technology, electric ballast is applied to the power supply of gaseous discharge lamp, and it is that 50Hz low frequency industrial electro is become high-frequency alternating current by commutation inversion, by an inductor lamp is powered again, overcome the shortcoming that inductance type ballast supply line exists substantially.But the inductor that is connected in the current supply circuit can cause the utilization ratio of high frequency electric source to reduce equally, make the electric energy total conversion efficiency be lower than 0.8, the major part of its loss is converted into heat, and the adverse consequences of bringing is to make the electric ballast poor stability, the spoilage height, useful life is short.This is shortcoming and its bottleneck of applying of restriction that present electric ballast exists.
The object of the present invention is to provide a kind of efficient, energy-conservation and the gaseous discharge lamp method of supplying power to and the electric supply installation thereof that meet the gaseous discharge lamp operating characteristic and start to require, and can overcome defective and the problem that exists in the background technology.
The method of supplying power to of a kind of gaseous discharge lamp of the present invention, it is characterized in that adopting interchange-AC frequency conversion mode to power to lamp by transformer rate of doing work coupling with modulation characteristics, and lamp tube electrode is applied the electric field triggering striking that the fundamental frequency high order harmonic component produces, arc current is controlled by the pulse frequency modulated that load variations causes, its pulse frequency modulated scope is 15KHz～35KHz;
A kind of electric supply installation of implementing described method of supplying power to, comprise housing and be arranged in the interior power supply circuits of housing, it is characterized in that this circuit is by interchange-AC frequency conversion circuit 1, high frequency power matching transformer 2, fluorescent tube 3 and fluorescent lamp soft starting circuit 4 constitute, 220 volts of 50Hz of civil power connect the input of interchange-AC frequency conversion circuit 1, the elementary winding of high frequency power matching transformer 2 is connected with the output of interchange-AC frequency conversion circuit 1, its secondary winding is connected with an end of fluorescent tube 3 two filaments respectively, and the input of fluorescent lamp soft starting circuit 4 is connected with the other end of fluorescent tube 3 two filaments respectively; Implement the electric supply installation of described method of supplying power to, its feature is that also fluorescent lamp soft starting circuit 4 is by rectification full-bridge BR2, controllable silicon SCR 1, thermistor PTCR, piezo-resistance RV, resistor R 4 and capacitor C6, C7, C8 forms, the input of rectification full-bridge BR2 is connected with the fa ' of filament fa-fa ' in the fluorescent tube 3, another input is connected with the fb ' of filament fb-fb ', capacitor C6 is connected across on two inputs of BR2, BR2 output plus terminal one tunnel is through thermistor PTCR, anode-the negative electrode of controllable silicon SCR 1 is received its negative terminal, another road is through capacitor C7 and piezo-resistance RV parallel connection, resistor R 4 and capacitor C8 also connect its negative terminal, the control utmost point of controllable silicon SCR 1 and capacitor C7, piezo-resistance RV, resistor R 4 is connected with the common point of capacitor C8;
A kind of electric supply installation of implementing described method, comprise housing and be arranged in the interior power supply circuits of housing, it is characterized in that this circuit is by interchange-AC frequency conversion circuit 1, high frequency power matching transformer 2, Metal halogen lamp tube circuit 3 and restart control circuit 4 and constitute, exchange the input that 220 volts of 50Hz civil powers connect interchange-AC frequency conversion circuit 1, the elementary winding of high frequency power matching transformer 2 is connected with the output of interchange-AC frequency conversion circuit 1, an one secondary winding is connected with Metal halogen lamp tube circuit 3, another secondary winding is connected with the input of restarting control circuit 4, and the output of restarting control circuit 4 is connected with the control end of interchange-AC frequency conversion circuit 1;
A kind of electric supply installation of implementing described method, comprise housing and be arranged in the interior power supply circuits of housing, it is characterized in that this circuit is by interchange-AC frequency conversion circuit 1, high frequency power matching transformer 2 and energy-saving lamp tube circuit 3 constitute, 220 volts of 50Hz of civil power connect the input of interchange-AC frequency conversion circuit 1, the elementary winding of high frequency power matching transformer 2 is connected with the output of interchange-AC frequency conversion circuit 1, and its secondary winding is connected with energy-saving lamp tube circuit 3.
A kind of electric supply installation of implementing described method, comprise housing and be arranged in the interior power supply circuits of housing, it is characterized in that this circuit is by interchange-AC frequency conversion circuit 1, high frequency power matching transformer 2 and high-pressure sodium lamp tube circuit 3 and restart control circuit 4 and constitute, 220 volts of 50Hz of civil power connect the input of interchange-AC frequency conversion circuit 1, the elementary winding of high frequency power matching transformer 2 is connected with the output of interchange-AC frequency conversion circuit 1, an one secondary winding is connected with high-pressure sodium lamp tube circuit 3, another secondary winding is connected with the input of restarting control circuit 4, and the output of restarting control circuit 4 is connected with the control end of interchange-AC frequency conversion circuit 1.
A kind of gaseous discharge lamp method of supplying power to and device thereof described in the invention, adopt interchange-AC frequency conversion mode that 220 volts of 50Hz civil powers are transformed into the high-frequency ac power of operating frequency greater than 20KHz, the high frequency power matching transformer is as the load of high-frequency ac power, its elementary windings in series is at the output of ac high frequency power source, and the electrode of its secondary winding and gaseous discharge lamp or filament one end are connected powers to lamp; One capacitor is in parallel with secondary winding or be connected on filament loop, when the high frequency power matching transformer is that lamp is in and starts or during restart mode at the power mismatch state, the high order harmonic component that is produced by the frequency changer circuit fundamental frequency makes lamp trigger striking, and after the striking, high order harmonic component is absorbed.Frequency changer circuit adopts the auto-excitation type half-bridge inversion circuit of connecting simply, reliably, adopt the series connection self-excited half-bridge inverter circuit of this programme power delivery mode to have good modulation characteristics: after the gaseous discharge lamp work, when if equivalent conductance becomes big between fluorescent tube two electrodes, this variation is fed back to its primary return by the high frequency power matching transformer, the self-oscillation frequency is descended, force the electric current by gaseous discharge lamp to descend after frequency modulation(FM), vice versa, thereby make arc current stable.
Compare with prior art, this programme has the following advantages:
1. adopt low internal resistance high frequency power matching transformer that lamp is powered, the energy conversion efficiency height more than 40%, economizes on electricity 10% or more than the employing electric ballast than the inductance type ballast economize on electricity, energy-saving effect is remarkable, helps improving the reliability and the useful life of complete machine simultaneously;
2. interchange-AC frequency conversion the circuit that has modulation characteristics conforms to the gaseous discharge lamp operating characteristic, and electrical discharge arc is stable, and its starting current is placed restrictions near steady-state value, helps improving fluorescent tube useful life, and noiselessness during work;
3. adopt the fundamental frequency high order harmonic component to trigger striking, startability is good, and frequency changer circuit is not had a negative impact, and is particularly conducive to the startup and the restart procedure of high-intensity gas discharge lamp.
Description of drawings
Fig. 1 is a kind of electric supply installation circuit block diagram of gaseous discharge lamp.
Fig. 2 is the circuit diagram of a kind of electric supply installation embodiment 1 of gaseous discharge lamp.
Fig. 3 is a kind of electric supply installation circuit block diagram of gaseous discharge lamp.
Fig. 4 is the circuit diagram of a kind of electric supply installation embodiment 2 of gaseous discharge lamp.
Fig. 5 is a kind of electric supply installation circuit block diagram of gaseous discharge lamp.
Fig. 6 is the circuit diagram of a kind of electric supply installation embodiment 3 of gaseous discharge lamp.
Fig. 7 is a kind of electric supply installation circuit block diagram of gaseous discharge lamp.
Fig. 8 is the circuit diagram of a kind of electric supply installation embodiment 4 of gaseous discharge lamp.
Embodiment 1: a kind of electric supply installation of gaseous discharge lamp, as shown in Figure 2,220 volts of 50Hz input AC-AC frequency conversion circuit 1 of civil power, through the BR1 rectification of rectification full-bridge and by capacitor C1, C2, diode D1, D2, D3 constitute by the filtering of streaming filter circuit, obtain direct voltage at the Vo+ point, offer the series connection self-excited half-bridge inverter circuit formed by resistor R 1, R2, R3, capacitor C3, C4, C5, diode D4, D5, D6, diac DIAC1, triode Q1, Q2 and self-oscillation transformer B1 as working power.The elementary winding B2/L1 of high frequency power matching transformer B2 is connected among the A, O branch road of half-bridge inversion circuit, and during energising, Vo+ is through resistor R
1Charge to capacitor C3, when the last voltage of C3 reaches the breakover voltage of diac DIAC1, the triode Q2 conducting that is triggered, the Collector Emitter discharge of the elementary winding B1/L1 of capacitor C5 by elementary winding B2/L1, the self-oscillation transformer B1 of O point, B2, A point, triode Q2, two secondary winding B1/L2 at B1, B1/L3 induces equal and opposite in direction, opposite polarity induced voltage, and the saturated Q1 of triode Q2 is ended; When making the B1 magnetic core, the electric current of the elementary winding B1/L1 of self-oscillation transformer B1 that flows through produces when saturated, B1/L2, the polarity inversion of B1/13 induced voltage, making triode become the saturated Q2 of Q1 ends, capacitor C4 is through the Q1 Collector Emitter, the A point, B1/L1, B2/L1, the discharge of O point, Vo+ is through the Q1 Collector Emitter simultaneously, the A point, B1/L1, B2/L1, the O point charges to C5, go round and begin again, elementary winding B2/L1 at high frequency power matching transformer B2 has high-frequency current to pass through, and its secondary winding transformer B2/L2 is through the two groups of filament fa-fa ' in fluorescent tube 3 two ends, fb-fb ' is added in capacitor C6 two ends to induced voltage; When lamp is unignited, B2 is in the power mismatch state, much bigger fundamental frequency higher harmonic voltage when the C6 two ends obtain to light state than lamp, piezo-resistance RV in the fluorescent lamp soft starting circuit 4 punctures, controllable silicon SCR 1 conducting that is triggered, high order harmonic component is absorbed, at filament fa-fa ', fb-fb ', high-frequency current is arranged by being heated among the thermistor PTCR, the resistance of PTCR is risen, when the resistance of PTCR rises to the electric current that makes the anode-negative electrode by SCR1 and keeps electric current less than it, SCR1 turn-offs, B2 is in the power mismatch state again, the C6 two ends obtain the humorous voltage of fundamental frequency high order and are applied to fluorescent tube 3 filament fa-fa ', on the fb-fb ', fluorescent lamp LAMP is activated and lights.
Embodiment 2: a kind of electric supply installation of gaseous discharge lamp as shown in Figure 4, two inputs of the rectification full-bridge BR1 of 220 volts of 50Hz input AC-AC frequency conversion circuit 1 of civil power, BR1 output obtains the working power of direct voltage as series connection self-excited half-bridge inverter circuit through power factor (PF) calibration circuit PFC on capacitor C1, the primary winding B2/L1 of high frequency power matching transformer 2 is connected on the load A of series connection self-excited half-bridge inverter circuit, in the O branch road, after the circuit starting of oscillation, at the secondary winding B2/L2 of high frequency power matching transformer 2 acquisition high frequency voltage and to 3 power supplies of Metal halogen lamp tube circuit, when lamp is unignited, high frequency power matching transformer 2 is in the power mismatch state, capacitor C6 two ends in Metal halogen lamp tube circuit 3 obtain higher harmonic voltage and pass through resistor R 4, the network that capacitor C7 forms is applied on Metal halogen lamp LAMP two electrodes, the Metal halogen lamp LAMP striking that is triggered.
When the Metal halogen lamp supply line instant power-down that is in operation, gas temperature is very high in the fluorescent tube, the electricity interelectrode conductance is minimum, trigger striking and need bigger energy, present embodiment adopts visit formula triggering mode, its course of work is as follows: series connection self-excited half-bridge inverter circuit is in resistor R 1, capacitor C2 and diac DIAC1 effect starting of oscillation again down, this moment, high frequency power matching transformer B2 was in the power mismatch state, much higher fundamental frequency higher harmonic voltage when its secondary winding transformer B2/L3 obtains to light than lamp, through diode D3, resistor R 5 applies high order harmonic component at another secondary resistance B2/L2 of B2 to electrode simultaneously to capacitor C8 charging, if can trigger striking, the B2/L3 winding is promptly exported specified fundamental frequency voltage, and the voltage on the capacitor C8 is lower than the breakover voltage of diac DIAC2, and triode Q3 is in cut-off state; If lamp can not trigger striking, capacitor C8 continues charging, when the last voltage of C8 reaches the breakover voltage of DIAC2, the Q3 saturation conduction, make the grid clamping of the field effect transistor Q2 in interchange-AC frequency conversion circuit 1 about 0.7 volt through diode D2, frequency changer circuit quits work, and triode Q3 is turned into by saturation conduction and ends, and triggers the striking failure for the first time; The Metal halogen lamp lamp hole temperature progressively descends simultaneously, 1 couple of capacitor C2 of resistor R charges once more, the starting of oscillation again of series connection self-excited half-bridge inverter circuit, restart control circuit 4 and repeat said process ... temperature drops to the energy that is applied to the fundamental frequency high order harmonic component on the Metal halogen lamp LAMP electrode in Metal halogen lamp pipe pipe is enough to make lamp to trigger striking, and Metal halogen lamp LAMP is restarted to be lighted.
Embodiment 3: a kind of electric supply installation of gaseous discharge lamp as shown in Figure 6, rectification full-bridge BR1 two inputs in 220 volts of 50Hz incoming transport-AC frequency conversion circuit 1 of civil power, through the BR1 full-wave rectification, become the operating voltage of direct voltage after the capacitor C1 filtering as series connection self-excited half-bridge inverter circuit, the primary winding B2/L1 of high frequency power matching transformer 2 is connected in the load branch of series connection self-excited half-bridge inverter circuit, after the starting of oscillation of series connection self-excited half-bridge inverter circuit, there is high-frequency current to pass through among the B2/L1, the secondary winding transformer B2/L2 of high frequency power matching transformer 2 provides high frequency voltage to energy-saving lamp tube circuit 3, when lamp is unignited, high frequency power matching transformer 2 is in the power mismatch state, and capacitor C6 two ends obtain the fundamental frequency high order harmonic component lights lamp LAMP triggering.
Embodiment 4: a kind of electric supply installation of gaseous discharge lamp as shown in Figure 8, two inputs of the rectification full-bridge BR1 of 220 volts of 50Hz input AC-AC frequency conversion circuit 1 of civil power, BR1 output obtains the working power of direct voltage as series connection self-excited half-bridge inverter circuit through power factor (PF) calibration circuit PFC on capacitor C1, the primary winding B2/L1 of high frequency power matching transformer 2 is connected on the load A of series connection self-excited half-bridge inverter circuit, in the O branch road, after the circuit starting of oscillation, at the secondary winding B2/L2 of high frequency power matching transformer 2 acquisition high frequency voltage and to 3 power supplies of high-pressure sodium lamp tube circuit, when lamp is unignited, high frequency power matching transformer 2 is in the power mismatch state, capacitor C6 two ends in high-pressure sodium lamp tube circuit 3 obtain higher harmonic voltage and also are applied on high-pressure sodium lamp LAMP two electrodes, the high-pressure sodium lamp LAMP striking that is triggered.
After high-pressure sodium lamp supply line was in operation instant power-down, present embodiment adopted visit formula triggering mode that lamp is restarted.
Present embodiment is equally applicable to the power supply of high-pressure mercury lamp.
Claims (7)
1, a kind of method of supplying power to of gaseous discharge lamp is characterized in that: adopt the interchange-AC frequency conversion mode with modulation characteristics to be powered to lamp by transformer rate of doing work coupling, and lamp tube electrode is applied the electric field triggering striking that is produced by the fundamental frequency high order harmonic component.
2, according to the method for supplying power to of claim 1, it is characterized in that: arc current is controlled by the pulse frequency modulated that load variations causes, its frequency modulation(FM) scope is 15KHz-35KHz.
3, a kind of electric supply installation of implementing the described method of claim 1, comprise housing and be arranged in the interior power supply circuits of housing, it is characterized in that: this circuit is by interchange-AC frequency conversion circuit [1], high frequency power matching transformer [2], fluorescent tube [3] and fluorescent lamp soft starting circuit [4] constitute, 220 volts of 50Hz of civil power connect the input of interchange-AC frequency conversion circuit [1], the elementary winding of high frequency power matching transformer [2] is connected with the output of interchange-AC frequency conversion circuit [1], its secondary winding is connected with an end of fluorescent tube [3] two head lamp silks respectively, and fluorescent lamp soft starting circuit [4] is connected with the other end of fluorescent tube [3] two head lamp silks.
4, a kind of electric supply installation according to claim 3, its feature also is: fluorescent lamp soft starting circuit [4] is by rectification full-bridge [BR2], controllable silicon [SCR1], thermistor [PTCR], piezo-resistance [RV], resistor [R4] and capacitor [C6], [C7], [C8] forms, an input of rectification full-bridge [BR2] is connected with [fa '] of filament [fa-fa '] in the fluorescent tube [3], another input is connected with [fb '] of filament [fb-fb '], capacitor [C6] is connected across on [BR2] two inputs, [BR2] output plus terminal one tunnel is through thermistor [PTCR], anode-the negative electrode of controllable silicon [SCR1] is received its negative terminal, another road is through capacitor [C7] and piezo-resistance [RV] parallel connection, resistor [R4] and capacitor [C8] also connect its negative terminal, the control utmost point of controllable silicon [SCR1] and capacitor [C7], piezo-resistance [RV], resistor [R4] is connected with the common point of capacitor [C8].
5, a kind of electric supply installation of implementing the described method of claim 1, comprise housing and be arranged in the interior power supply circuits of housing, it is characterized in that: this circuit is by exchanging an AC frequency conversion circuit [1], high frequency power matching transformer [2], Metal halogen lamp tube circuit [3] and restart control circuit [4] and constitute, exchange the input that 220 volts of 50Hz civil powers connect interchange-AC frequency conversion circuit [1], the elementary winding of high frequency power matching transformer [2] is connected with the output of interchange-AC frequency conversion circuit [1], an one secondary winding is connected with Metal halogen lamp tube circuit [3], and another secondary winding is connected with the input of restarting control circuit [4]; The output of restarting control circuit [4] is connected with the control end of interchange-AC frequency conversion circuit [1].
6, a kind of electric supply installation of implementing the described method of claim 1, comprise housing and be arranged in the interior power supply circuits of housing, it is characterized in that: this circuit is made of interchange-AC frequency conversion circuit [1], high frequency power matching transformer [2], energy-saving lamp tube circuit [3], exchange the input that 220 volts of 50Hz civil powers connect interchange-AC frequency conversion circuit [1], the elementary winding of high frequency power matching transformer [2] is connected with the output of interchange-AC frequency conversion circuit [1], and its secondary winding is connected with energy-saving lamp tube circuit [3].
7, a kind of electric supply installation of implementing the described method of claim 1, comprise housing and be arranged in the interior power supply circuits of housing, it is characterized in that: this circuit is by interchange-AC frequency conversion circuit [1], high frequency power matching transformer [2], high-pressure sodium lamp tube circuit [3] and restart control circuit [4] and constitute, exchange the input that 220 volts of 50Hz civil powers connect interchange-AC frequency conversion circuit [1], the elementary winding of high frequency power matching transformer [2] is connected with the output of interchange-AC frequency conversion circuit [1], an one secondary winding is connected with high-pressure sodium lamp tube circuit [3], and another secondary winding is connected with the input of restarting control circuit [4]; The output of restarting control circuit [4] is connected with the control end of interchange-AC frequency conversion circuit [1].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99124132 CN1255823A (en) | 1999-11-26 | 1999-11-26 | Electric power supply method and device for gas discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99124132 CN1255823A (en) | 1999-11-26 | 1999-11-26 | Electric power supply method and device for gas discharge lamps |
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| Publication Number | Publication Date |
|---|---|
| CN1255823A true CN1255823A (en) | 2000-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99124132 Pending CN1255823A (en) | 1999-11-26 | 1999-11-26 | Electric power supply method and device for gas discharge lamps |
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| CN (1) | CN1255823A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912423A (en) * | 2011-08-01 | 2013-02-06 | 西门子公司 | Power supply device for a jar heater and method for its operation |
| CN101455125B (en) * | 2006-04-21 | 2014-03-05 | 氙股份有限公司 | Multistrike gas discharge lamp ignition apparatus and method |
-
1999
- 1999-11-26 CN CN 99124132 patent/CN1255823A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101455125B (en) * | 2006-04-21 | 2014-03-05 | 氙股份有限公司 | Multistrike gas discharge lamp ignition apparatus and method |
| CN102912423A (en) * | 2011-08-01 | 2013-02-06 | 西门子公司 | Power supply device for a jar heater and method for its operation |
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