CN105282912A - Digital power source applied to lamp tube - Google Patents
Digital power source applied to lamp tube Download PDFInfo
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- CN105282912A CN105282912A CN201510061567.4A CN201510061567A CN105282912A CN 105282912 A CN105282912 A CN 105282912A CN 201510061567 A CN201510061567 A CN 201510061567A CN 105282912 A CN105282912 A CN 105282912A
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- fluorescent tube
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- digital power
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- 238000010304 firing Methods 0.000 claims description 10
- 229910052736 halogen Inorganic materials 0.000 claims description 7
- 150000002367 halogens Chemical class 0.000 claims description 7
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical group [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052753 mercury Inorganic materials 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The present invention discloses a digital power source applied to a lamp tube. The digital power source comprises a three-phase supply; a three-phase half-controlled full-wave rectifier for rectifying an alternating current electrical signal provided by the three-phase supply into a direct current electrical signal with controllable voltage; an SRC resonance circuit module, rectified direct current being provided to the SRC resonance circuit module, the SRC resonance circuit module comprising a plurality of SRC resonance circuits in parallel connection, and voltage output by the SRC resonance circuit module being controlled by adjusting working frequencies of the SRC resonance circuits; a rectifying circuit module for converting an output alternating current electrical signal of a square wave into a direct current electrical signal; an inverter output circuit module for outputting the rectified direct current electrical signal of the square wave to the lamp tube; and an ignition circuit module for superposing the square wave alternating current electrical signal output by the inverter output circuit module and a high-voltage direct current signal of the ignition circuit module to two ends of the lamp tube, thus to provide a high-voltage electrical signal for starting the lamp tube. With adoption of the digital power source applied to the lamp tube, defects that a conventional control method is high in requirements for power sources and large in power consumption are overcome.
Description
Technical field
The present invention relates to a kind of digital power, particularly relate to a kind of digital power being applied to fluorescent tube.
Background technology
The electric power system of the gaseous discharge lamps such as mercury lamp Halogen lamp LED traditional at present, provides power supply primarily of transformer, due to principle and the process characteristic restriction of transformer, transformer has power stage and controls more coarse, require higher to power grid quality, the shortcomings such as power factor is lower, and efficiency is lower.
Most digital power adopts the mode of single channel resonance on the market at present, usually transformer regulating is increased in digital power inversion output stage, due to this kind of circuit structure Zhi You No. mono-resonant circuit transmitting energy, therefore the current ratio of resonant circuit is comparatively large, and IGBT module generally can only be adopted to drive.IGBT module price all costly, and the switching frequency of IGBT is general all lower, therefore the volume of transformer of output stage is difficult to do little, and due to the reason that the switching frequency of IGBT is lower, output transformer can be attended by high frequency noise, the making of transformer is very difficult, and time especially high-power, this problem is very outstanding.
In China, work frequency is 50Hz, Fig. 1 is the output energy waveform figure of fluorescent tube under power frequency traditional transformer control mode, as seen from Figure 1, the energy that UV fluorescent tube under traditional control method exports fluctuates between zero-sum maximum with the frequency of 50Hz, such sinusoidal output waveform exports lower due to the voltage free longer in the both sides crossing 0, affects the optical wavelength distribution that fluorescent tube exports, reduces the ultraviolet content of required wavelength components.And export for UV total power, traditional transformer control mode generally when standby power output all reach flat-out 40%, waste is very serious, and in addition, the impact that traditional transformer control mode exports by the fluctuation of line voltage is larger, and heating loss is large.
Summary of the invention
The present invention proposes a kind of digital power being applied to fluorescent tube, larger by the impact of the fluctuation of line voltage with the electric power system solving the gaseous discharge lamps such as the Halogen lamp LED of use transformer-supplied traditional at present, the technical problem that electric energy loss is large.
The present invention adopts following technical scheme to realize: a kind of digital power being applied to fluorescent tube, and wherein, this digital power comprises: three phase mains, provides an ac signal; Three-phase half-controlled full-wave rectifier, its one end is connected with this three phase mains, becomes the DC signal of controllable voltage after the ac signal rectification provided by three phase mains; SRC resonant circuit module, this SRC resonant circuit module one end and this three-phase radius full-wave rectifier other end are electrically connected, direct current after this three-phase radius full-wave rectifier rectification is provided to this SRC resonant circuit module, this SRC resonant circuit module comprises the SRC resonant circuit of several connections parallel with one another, by regulating the operating frequency of SRC resonant circuit, thus the voltage that the control SRC resonant circuit module other end exports; Rectification circuit module, this rectification circuit module one end and this SRC resonant circuit module other end are electrically connected, and the square wave alternating-current signal of telecommunication exported through SRC resonant circuit module is converted to DC signal; Inverter output circuit module, is coupled to rectification circuit module, exports the DC signal after SRC resonant circuit module and the rectification of rectification circuit module to fluorescent tube through this inverter output circuit module; And firing circuit module, this firing circuit module one end is coupled to this inverter output circuit module, the other end is connected with fluorescent tube, this fluorescent tube other end is connected with this inverter output circuit module output, the square wave alternating-current signal of telecommunication export this inverter output circuit module and the high-voltage dc signal of this firing circuit module are superimposed to lamp tube ends, with the high-voltage signal providing this fluorescent tube to start.
Compared with prior art, the present invention has following beneficial effect: a kind of digital power being applied to fluorescent tube provided by the invention, not only overcome the defects such as traditional control method is high to power requirement, power consumption is large, and there is following advantage: high-frequency and stable square wave export, the square wave of high frequency output improves a lot in stability than traditional control method, there is wide voltage input characteristic, export hardly by the impact of the fluctuation of line voltage, stable square wave exports and ensure that stable solidification effect; High efficiency and High Power Factor; Standby/low power exports, and electronic control mode will save the electric energy of more than 30% than traditional control method; And the output power of refinement, this digital power can realize exporting without dead smooth of power, can power accurately be exported ultraviolet energy size as required by the power stage of refinement, saves the loss of electric energy.
Preferably, the invention provides a kind of digital power being applied to fluorescent tube, wherein, described three phase mains is 380 volts of ac signals of 50 hertz or 60 hertz for providing frequency.
Preferably, the invention provides a kind of digital power being applied to fluorescent tube, wherein, between described three phase mains and three-phase half-controlled full-wave rectifier, be also connected with EMC filter circuit module.
The invention provides a kind of digital power being applied to fluorescent tube, the high-frequency interferencing signal of this EMC filter circuit module to the alternating current of 380 volts that electrical network inputs carries out filtering, prevents outside high-frequency signals to the interference of power supply; Also can carry out filtering to the high-frequency interferencing signal that three phase mains itself produces, prevent the high-frequency signal of this digital power from interfering with other equipment of external electrical network.
Preferably, the invention provides a kind of digital power being applied to fluorescent tube, wherein, the SRC resonant circuit of several parallel connections described adopts MOSFET pipe as driving tube.
Preferably, the invention provides a kind of digital power being applied to fluorescent tube, wherein, described SRC resonant circuit module comprises 4 grades of SRC resonant circuits parallel with one another.
Preferably, the invention provides a kind of digital power being applied to fluorescent tube, wherein, described inverter circuit module needs according to user the frequency arranging lamp tube power supply output, and square wave exports the ultraviolet content being conducive to raising fluorescent tube and sending, and increases lamp tube service life.
Preferably, the invention provides a kind of digital power being applied to fluorescent tube, wherein, described fluorescent tube is mercury lamp or Halogen lamp LED.
The invention provides a kind of digital power being applied to fluorescent tube, by regulating the operating frequency of SRC resonant circuit, thus the voltage that control SRC resonant circuit module exports, 4 grades of SRC resonant circuits parallel with one another share transmitted energy automatically according to inherent parameters and load characteristic, the driving tube adopted is MOSFET pipe, operating frequency can up to more than 100KHZ, realize the high efficiency of transmission of energy, and this kind of SRC resonant circuit structure is when load is short-circuited, because the load impedance of equivalence diminishes instantaneously, the working curve of resonance changes, when CPU does not also react adjustment operating frequency, this structure itself can reduce output voltage instantaneously, and then protective circuit, avoid causing very large burning.Present invention employs the mode transferring energy of 4 grades of SRC resonant circuits parallel connection, greatly reduce circuit to the voltage and current requirement of driving tube, thus effectively reduce costs, and gross power is shared in 4 grades of SRC resonant circuits, the driving tube of every one-level can complete with the MOSFET pipe that frequency is higher, because resonance frequency is higher, therefore circuit efficiency can do more, and volume of transformer can do less.
Accompanying drawing explanation
Fig. 1 is the output energy waveform figure of the fluorescent tube under power frequency traditional transformer control mode;
Fig. 2 is that the light tube electric voltage under digital power control mode exports energy waveform figure;
Fig. 3 is the fluorescent tube Energy transmission comparison diagram of traditional approach and digital power mode;
Fig. 4 is the structural representation of the digital power being applied to fluorescent tube;
Fig. 5 is three-phase half-controlled full-wave rectifier current/voltage output waveform figure;
Fig. 6 is the voltage and current waveform that this inverter output circuit module exports lamp tube ends to;
Fig. 7 is the flow chart that fluorescent tube starts.
Embodiment
Please refer to Fig. 2 to Fig. 4, the present invention proposes a kind of digital power being applied to fluorescent tube, the electric power system solving the gaseous discharge lamps such as the mercury lamp of use transformer-supplied traditional at present or Halogen lamp LED is larger by the impact of the fluctuation of line voltage, the technical problem that electric energy loss is large.
As shown in Figure 4, wherein, this digital power is mainly used in the gaseous discharge lamp such as mercury lamp or Halogen lamp LED, in the present embodiment, described fluorescent tube 160 is for Halogen lamp LED, this digital power comprises: three phase mains 100, provides an ac signal, and described ac signal employing voltage is 380 volts, frequency is 50 hertz or 60 hertz.
Again, EMC filter circuit module is also connected with between described three phase mains 100 and three-phase half-controlled full-wave rectifier 110, the high-frequency interferencing signal of this EMC filter circuit module to the ac signal of 380 volts that electrical network inputs carries out filtering, prevents outside high-frequency signals from disturbing three phase mains 100; This EMC filter circuit module also can carry out filtering to the high-frequency interferencing signal that three phase mains 100 itself produces, prevent the high-frequency signal of this digital power from interfering with other equipment of external electrical network, thus ensure that three phase mains 100 provides the glitch-free ac signal of high-quality.
This three-phase half-controlled full-wave rectifier 110 one end is connected with this three phase mains 100 through EMC filter circuit module, becomes the DC signal of controllable voltage after the glitch-free ac signal rectification of the high-quality that three phase mains 100 can be provided.Again incorporated by reference to Fig. 5, be three-phase half-controlled full-wave rectifier current/voltage output waveform figure, on figure, thick lines part is 30 degree, mutually empty angle, the voltage in resistive load situation and current waveform.
Described SRC resonant circuit module 120 one end and this three-phase radius full-wave rectifier 110 other end are electrically connected, direct current after this three-phase radius full-wave rectifier 110 rectification is provided to this SRC resonant circuit module 120, wherein, this SRC resonant circuit module 130 comprises the SRC resonant circuit 1201 of several connections parallel with one another, by regulating the operating frequency of SRC resonant circuit 1201 at different levels, thus the voltage that control SRC resonant circuit module 120 other end exports.Wherein, the driving tube of several SRC resonant circuits 1201 described can adopt MOSFET to manage, in the present embodiment, described SRC resonant circuit module 120 have employed the parallel way transferring energy of 4 grades of SRC resonant circuits 1201, such structure can reduce the voltage and current requirement of circuit to driving tube greatly, thus effectively reduce costs, and gross power is shared in 4 road SRC resonant circuits 1201, the driving tube on each road can complete with the MOSFET pipe that frequency is higher, because resonance frequency is higher, therefore circuit efficiency can do more, volume of transformer can do less.
Described rectification circuit module 130 one end and this SRC resonant circuit module 120 other end are electrically connected, and the ac signal of the square wave exported through SRC resonant circuit module 120 is converted to DC signal; Inverter output circuit module 150, is coupled to rectification circuit module 130, exports the DC signal of the square wave after SRC resonant circuit module 120 and rectification circuit module 130 rectification to fluorescent tube 160 through this inverter output circuit module 150.
In addition, this digital power also comprises firing circuit module 140, this firing circuit module 140 one end is coupled to this inverter output circuit module 150, the other end is connected with fluorescent tube 160 one end, this fluorescent tube 160 other end is connected with this inverter output circuit module 150 output, please refer to Fig. 6 again, Fig. 6 is the voltage and current waveform that this inverter output circuit module exports lamp tube ends to, the square wave alternating-current signal of telecommunication export this inverter output circuit module 150 and the high-voltage dc signal of this firing circuit module 140 are superimposed to fluorescent tube 160 two ends, with the high-voltage signal providing this fluorescent tube 160 to start, general ignition voltage up to 1500 volts to 5000 volts, thus, start this fluorescent tube 160.Wherein, the voltage that this inverter output circuit module 150 outputs to fluorescent tube 160 carries out closed-loop control by SRC resonant circuit 1201 frequency, and the operating frequency of this inverter output circuit module 150 is generally 50 hertz to 400 hertz.
Please refer to Fig. 7, is the workflow diagram that this fluorescent tube starts, and this fluorescent tube startup work comprises the following steps: step 201: start; Step 202: set point ignition voltage, modulating voltage and lamp current alarming threshold value; Step 203: read ignition voltage, modulating voltage and lamp current alarming threshold value; Step 204: enable firing circuit module, when lamp current being detected, igniting completes; Step 205: fluorescent tube starts.
As shown in Figure 2, it is digital power control mode, light tube electric voltage oscillogram, the output of this digital power is that the square-wave signal of 50HZ-400Hz exports, the low-voltage part of output owing to not having traditional approach to cross at 0 of square wave, so ensure that the constant of lamp tube ends voltage, and then ensure that stable ultraviolet exports.
Please refer to Fig. 3 again, Fig. 3 is the fluorescent tube Energy transmission comparison diagram of traditional approach and digital power mode, by in Fig. 3, light tube electric voltage waveform under careful comparison diagram 1 and Fig. 2 two kinds of modes, filled black part is the UV energy of loss, be not difficult to find same electric energy input, the fluorescent tube of digital power mode will obtain more UV energy.
Comprehensively above-mentioned, a kind of digital power being applied to fluorescent tube provided by the invention, there is following advantage: high-frequency and stable square wave export, the square wave of high frequency output improves a lot in stability than traditional control method, there is wide voltage input characteristic, export hardly by the impact of the fluctuation of line voltage, stable square wave exports and ensure that stable solidification effect; High efficiency and High Power Factor; Standby/low power exports, and electronic control mode will save the electric energy of more than 30% than traditional control method; And the output power of refinement, this digital power can realize exporting without dead smooth of power, can power accurately be exported ultraviolet energy size as required by the power stage of refinement, saves the loss of electric energy.
The foregoing is only preferred embodiment of the present invention, be not limited to the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. be applied to a digital power for fluorescent tube, it is characterized in that, this digital power comprises:
Three phase mains, provides an ac signal;
Three-phase half-controlled full-wave rectifier, its one end is connected with this three phase mains, becomes the DC signal of controllable voltage after the ac signal rectification provided by three phase mains;
SRC resonant circuit module, this SRC resonant circuit module one end and this three-phase radius full-wave rectifier other end are electrically connected, direct current after this three-phase radius full-wave rectifier rectification is provided to this SRC resonant circuit module, this SRC resonant circuit module comprises the SRC resonant circuit of several connections parallel with one another, by regulating the operating frequency of SRC resonant circuit, thus the voltage that the control SRC resonant circuit module other end exports;
Rectification circuit module, this rectification circuit module one end and this SRC resonant circuit module other end are electrically connected, and the square wave alternating-current signal of telecommunication exported through SRC resonant circuit module is converted to DC signal;
With the inverter output circuit module of rectification circuit module couples, export the DC signal after SRC resonant circuit module and the rectification of rectification circuit module to fluorescent tube through this inverter output circuit module; And
Firing circuit module, this firing circuit module one end is coupled to this inverter output circuit module, the other end is connected with fluorescent tube, this fluorescent tube other end is connected with this inverter output circuit module output, the square wave alternating-current signal of telecommunication export this inverter output circuit module and the high-voltage dc signal of this firing circuit module are superimposed to lamp tube ends, with the high-voltage signal providing this fluorescent tube to start.
2. a kind of digital power being applied to fluorescent tube according to claim 1, is characterized in that, described three phase mains is 380 volts of ac signals of 50 hertz or 60 hertz for providing frequency.
3. a kind of digital power being applied to fluorescent tube according to claim 1, is characterized in that, be also connected with EMC filter circuit module between described three phase mains and three-phase half-controlled full-wave rectifier.
4. a kind of digital power being applied to fluorescent tube according to claim 1, is characterized in that, the SRC resonant circuit of several parallel connections described adopts MOSFET pipe as driving tube.
5. the digital power being applied to fluorescent tube according to claim 1 or 4, is characterized in that, described SRC resonant circuit module comprises 4 grades of SRC resonant circuits parallel with one another.
6. a kind of digital power being applied to fluorescent tube according to claim 1, is characterized in that, described inverter circuit module needs according to user the frequency arranging lamp tube power supply output.
7. a kind of digital power being applied to fluorescent tube according to claim 1, is characterized in that, described fluorescent tube is mercury lamp or Halogen lamp LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510061567.4A CN105282912B (en) | 2014-11-18 | 2015-02-05 | A kind of digital power applied to fluorescent tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410658982 | 2014-11-18 | ||
| CN2014106589823 | 2014-11-18 | ||
| CN201510061567.4A CN105282912B (en) | 2014-11-18 | 2015-02-05 | A kind of digital power applied to fluorescent tube |
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| Publication Number | Publication Date |
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| CN105282912A true CN105282912A (en) | 2016-01-27 |
| CN105282912B CN105282912B (en) | 2017-09-19 |
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| CN201510061567.4A Active CN105282912B (en) | 2014-11-18 | 2015-02-05 | A kind of digital power applied to fluorescent tube |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611315A (en) * | 2012-03-22 | 2012-07-25 | 华为技术有限公司 | Resonant switching circuit |
| US20120268011A1 (en) * | 2011-04-22 | 2012-10-25 | Green Solution Technology Co., Ltd. | Led driving circuit |
| CN203301387U (en) * | 2013-05-20 | 2013-11-20 | 镇江天力变压器有限公司 | Large-power high-frequency and high-voltage power supply |
| CN103683964A (en) * | 2013-12-20 | 2014-03-26 | 华为技术有限公司 | Resonant bidirectional transducer, uninterruptible power supply device and control method |
| CN204180365U (en) * | 2014-11-18 | 2015-02-25 | 林创业 | A kind of digital power being applied to fluorescent tube |
-
2015
- 2015-02-05 CN CN201510061567.4A patent/CN105282912B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120268011A1 (en) * | 2011-04-22 | 2012-10-25 | Green Solution Technology Co., Ltd. | Led driving circuit |
| CN102611315A (en) * | 2012-03-22 | 2012-07-25 | 华为技术有限公司 | Resonant switching circuit |
| CN203301387U (en) * | 2013-05-20 | 2013-11-20 | 镇江天力变压器有限公司 | Large-power high-frequency and high-voltage power supply |
| CN103683964A (en) * | 2013-12-20 | 2014-03-26 | 华为技术有限公司 | Resonant bidirectional transducer, uninterruptible power supply device and control method |
| CN204180365U (en) * | 2014-11-18 | 2015-02-25 | 林创业 | A kind of digital power being applied to fluorescent tube |
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| CN105282912B (en) | 2017-09-19 |
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