CN202444684U - Metal halide lamp electronic ballast - Google Patents
Metal halide lamp electronic ballast Download PDFInfo
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- CN202444684U CN202444684U CN2012200073174U CN201220007317U CN202444684U CN 202444684 U CN202444684 U CN 202444684U CN 2012200073174 U CN2012200073174 U CN 2012200073174U CN 201220007317 U CN201220007317 U CN 201220007317U CN 202444684 U CN202444684 U CN 202444684U
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- circuit
- full bridge
- switching tube
- halogen lamp
- metal halogen
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Abstract
The present utility model discloses a metal halide lamp electronic ballast. The ballast comprises a filter circuit, a flyback conversion circuit, a controller, an auxiliary power supply circuit, a full bridge inversion circuit, a full bridge inversion circuit drive and a high voltage igniting circuit, wherein the input end of the filter circuit is connected with a low voltage DC input power supply, the output end of the filter circuit is connected with the flyback conversion circuit; the output end of the flyback conversion circuit is connected with the auxiliary power supply circuit and the full bridge inversion circuit; the controller is connected with the flyback conversion circuit; the output of the auxiliary power supply circuit is connected with the full bridge inversion circuit; the full bridge inversion circuit drive is connected with the full bridge inversion circuit; the output of the full bridge inversion circuit is connected with the high voltage igniting circuit; the high voltage igniting circuit is connected with a metal halide lamp and used for igniting the metal halide lamp. The metal halide lamp electronic ballast can be used for providing low voltage direct current driving ignition for a small-power metal halide lamp, thus reliable starting and stable sate entering of the metal halide lamp can be guaranteed.
Description
Technical field
The utility model relates to power technique fields, is specifically related to a kind of metal halogen lamp electric ballast.
Background technology
Illumination also is the key point of human society ability sustainable development current social as one of important symbol of weighing national society's modernization civilization.In recent years, along with the deep popularization of green illumination and the develop rapidly of battery technology, progressively popularize to key lighting from simple Landscape Lighting by battery-driven lighting installation.Supporting light source as battery-driven lighting installation mainly contains ordinary incandescent lamp bubble, light-emitting diode (Light Emitting Diode, LED) lamp, power saving fluorescent lamp and high-pressure discharge (High intensity Discharge, HID) lamp at present.But former kinds of supporting light sources all exist limitation in the use; Bigger like the incandescent lamp bulb power consumption; The price of led light source is higher, and power saving fluorescent lamp is owing to its specific flash-over characteristic, and lamp tube service life is very limited etc.; Though and the high-pressure sodium lamp light efficiency in the HID lamp is very high, developing the color relatively poor is suitable for street lighting.
As a kind of high efficiency light source in the HID electric light, metal halide lamp (Metal Halide Lamp MHL), is called for short Metal halogen lamp since light efficiency high, develop the color, the life-span is long, colour temperature is drifted about characteristics such as little, energy-conservation, become the first-selected product of Green Lighting Project.Show as in the time of the stable state of lighting a fire from the starting characteristic of Metal halogen lamp, impedance is the process of a dynamic change, therefore requires ballast in the different phase that Metal halogen lamp starts suitable current and voltage to be provided, and guarantee fund's halogen lamp is reliable to be started and the entering stable state.
Summary of the invention
For addressing the above problem, the purpose of the utility model is to provide a kind of metal halogen lamp electric ballast, is used to low power Metal halogen lamp the igniting of low-voltage DC driven is provided, and starts and the entering stable state to guarantee that the small-power Metal halogen lamp is reliable.
For realizing above-mentioned purpose, the technical scheme of the utility model is:
A kind of metal halogen lamp electric ballast; Be applied to light Metal halogen lamp through low-voltage dc power supply; It is characterized in that; Comprise that filter circuit, inverse-excitation converting circuit, controller, auxiliary power supply circuit, full bridge inverter, full bridge inverter drive and the high-tension ignition circuit, wherein said filter circuit input is connected with low-voltage direct input power supply, and the output of said filter circuit is connected with inverse-excitation converting circuit; The output of said inverse-excitation converting circuit is connected with said auxiliary power supply circuit and said full bridge inverter; Said controller is connected with said inverse-excitation converting circuit; The output of said auxiliary power supply circuit is connected with full bridge inverter; Said full bridge inverter drives and is connected with said full bridge inverter; The output of said full bridge inverter connects the high-tension ignition circuit; Said high-tension ignition circuit and Metal halogen lamp also connect, and are used to light said Metal halogen lamp.
Further; Said inverse-excitation converting circuit further comprises anti-violent change depressor; With first switching tube that the former limit inductance of said anti-violent change depressor is connected, the output rectifier diode of connecting and the output capacitance parallelly connected with said secondary inductance with the secondary inductance of said anti-violent change depressor.
Further, said metal halogen lamp electric ballast further comprises clamp circuit,
Said clamp circuit comprises first resistance, first electric capacity parallelly connected with said first resistance, and with first diode of said first resistance and said first capacitances in series, said clamp circuit and the parallelly connected setting of said former limit inductance.
Further; Said full bridge inverter comprises second switch pipe, the 3rd switching tube, the 4th switching tube and the 5th switching tube; Said second switch pipe is connected with said the 3rd switching tube; Said the 4th switching tube is connected with said the 5th switching tube, and said second switch pipe is parallelly connected with the series arm of said the 5th switching tube with said the 4th switching tube with the series arm of said the 3rd switching tube.
Further, said auxiliary power supply circuit comprises that transient voltage suppresses diode, second resistance and second electric capacity, and said transient voltage suppresses diode and is connected in series the said second resistance other end and said second capacitance series with second resistance, one end.
Further, said high-tension ignition circuit adopts the high-frequency resonant sparking mode.
Through adopting above technical scheme, the beneficial effect of the utility model is:
(1) through adopting the single-ended flyback translation circuit to be operated under the interrupter duty pattern, greatly reduces the Conducted EMI noise ratio,, can control by the accurate permanent power of Rapid Realization through regulating duty ratio;
(2) the high-tension ignition circuit is through adopting the resonant ignition mode; Significantly improved resonance potential, firing pulse is that high frequency continues pulse, can offer the sufficient energy of lamp; When adopting this mode to solve switching frequency and resonance frequency to differ big, the undertension of generation is so that the problem that lamp starts.
Description of drawings
Fig. 1 is the structured flowchart of the utility model embodiment metal halogen lamp electric ballast;
Fig. 2 is the circuit theory diagrams of the utility model embodiment metal halogen lamp electric ballast.
Embodiment
To combine Figure of description that the utility model execution mode is specified below.
Referring to Fig. 1; The metal halogen lamp electric ballast 100 of the utility model embodiment comprises filter circuit 101, inverse-excitation converting circuit 102, controller 103, auxiliary power supply circuit 104, full bridge inverter 105, full bridge inverter driving 106 and high-tension ignition circuit 107; Wherein filter circuit 101 inputs are connected with low-voltage direct input power supply Vs, and the output of filter circuit 101 is connected with inverse-excitation converting circuit 102; The output of inverse-excitation converting circuit 102 is connected with full bridge inverter 105 with auxiliary power supply circuit 104; Controller 103 is connected with inverse-excitation converting circuit 102; The output of auxiliary power supply circuit 104 is connected with full bridge inverter 105; Full bridge inverter drives 106 and is connected with full bridge inverter 105; The output of full bridge inverter 105 connects high-tension ignition circuit 107; High-tension ignition circuit 107 and Metal halogen lamp 200 also connect, and are used to light Metal halogen lamp 200.The metal halogen lamp electric ballast that connects to form through above circuit; Its course of work is following: low-voltage direct input power supply Vs is after filter circuit 101 filtering; Boost through controller 103 control inverse-excitation converting circuits 102, the voltage after boosting is exported to auxiliary power supply circuit 104 and with full bridge inverter 105 input voltage is provided, and drives 106 control full bridge inverters 105 through full bridge inverter and produces pulse voltage signal; The pulse voltage signal that produces carries out resonant ignition through high-tension ignition circuit 107 again; Produce instantaneous high pressure, make Metal halogen lamp 200 light, after igniting is accomplished; Auxiliary power supply circuit 104 provides transient current and lights continuing after the startup so that Metal halogen lamp 200 is accomplished, and gets into normal work stage.
In the concrete application example, circuit theory diagrams are referring to Fig. 2, inverse-excitation converting circuit 102 further one anti-violent change depressors; The first switching tube Q that connects with the former limit inductance L p of anti-violent change depressor; The output rectifier diode D1 that connects with the secondary inductance Ls of anti-violent change depressor is with the series arm parallelly connected output capacitance C1 of secondary inductance with output arrangement diode D1 composition, when the first switching tube Q opens; The former limit of transformer inductance L p electric current is linear to rise; With energy with the stored in form of magnetic energy in transformer, secondary rectifier diode D1 instead ends partially, output capacitance C1 powering load.When the first switching tube Q turn-offs, secondary rectifier diode D1 conducting, the energy in the transformer is sent to secondary, gives output capacitance C1 charging and to load energy is provided.Inverse-excitation converting circuit 102 is operated in the interrupter duty pattern through conducting and the shutoff of the controller 103 controls first switching tube Q; Through being operated in interrupter duty pattern DCM; Under the DCM pattern; Conduction period is stored in the energy in the elementary winding, before next cycle begins, is delivered to fully in secondary and the load, flows back to zero constantly and have a Dead Time between the beginning of next cycle in secondary electrical.Be operated in the DCM mode of operation through controlling first switching tube, greatly reduce the Conducted EMI noise ratio, through regulating the first switching tube duty ratio, can the accurate permanent power control of Rapid Realization.Present embodiment middle controller 103 adopts current mode pulse width control chip UC2843 and single-chip microcomputer PIC16F716 to mix control, realizes the control strategy and the method for the level and smooth startup of Metal halogen lamp, accurate permanent power control and electronic ballast protection function.
Further; Said metal halogen lamp electric ballast further comprises clamp circuit; Said clamp circuit comprises first resistance R; First capacitor C parallelly connected with said first resistance R, with the first diode D that said first resistance R and said first capacitor C are connected, the parallelly connected setting of former limit inductance L p of said clamp circuit and said anti-violent change depressor.Clamp circuit is used for absorbing the energy of transformer leakage inductance; Be used for turn-offing when former limit switching tube; The energy that is stored in the transformer leakage inductance produces very high voltage spine at drain D and the source S utmost point two ends of the first switching tube Q1, if do not take measures, causes switching tube to damage easily.
Further; Said full bridge inverter comprises second switch pipe Q2, the 3rd switching tube Q3, the 4th switching tube Q4 and the 5th switching tube Q5; Said second switch pipe Q2 connects with said the 3rd switching tube Q3; Said the 4th switching tube Q4 connects with said the 5th switching tube Q5, and said second switch pipe Q2 is parallelly connected with the series arm of said the 5th switching tube Q5 with said the 4th switching tube Q4 with the series arm of said the 3rd switching tube Q3.The IRS2453D that adopts IR company to release in the present embodiment drives as inverter circuit, and it produces driving pulse and controls two pairs of switching tubes respectively, wherein Q2, Q4 homophase, Q3, Q5 homophase.Though this circuit is comparatively complicated, used power device is many, drives complicacy, and cost is higher, and circuit working can effectively avoid the acoustic resonance phenomenon, and Electro Magnetic Compatibility is good at the low frequency state.
Further; Said auxiliary power supply circuit 104 comprises that transient voltage suppresses diode TVS, second resistance R 5 and second capacitor C 2; Said transient voltage suppresses diode TVS and is connected in series R5 with second resistance, one end, and said second resistance R, 5 other ends are connected in series with said second capacitor C 2.When igniting busbar voltage reach about 380V, 2 chargings of second capacitor C, use as a lamp bright after, busbar voltage is reduced to about 20V, at this moment 2 pairs of Metal halogen lamps 200 of second capacitor C provide auxiliary current, after capacitance voltage drops to TVS pipe clamping voltage, no longer work.Electric capacity only provides electric current to lamp in a flash after lamp is lighted, can effectively prolong the useful life of second electric capacity.Adopt the auxiliary power supply circuit can guarantee that lamp has the good stage of taking over, improves ignition success rate when starting.
The high-tension ignition circuit adopts the resonant ignition mode; The resonant circuit sparking mode mainly be based on the LC resonance theory; Their startup principle is the high voltage startup Metal halogen lamp that utilizes LC resonance to produce, and the variation that utilizes Metal halogen lamp to start the front and back impedance operator makes the off resonance of resonant circuit nature reach stable operating state.The high-tension width that resonance manner produces will be much larger than the high-tension width of pulse mode generation, and the higher position can provide enough energy that lamp is lighted so resonance potential does not need very.Generally in low-pressure gaseous discharge lamp such as fluorescent lamp and small-power HID lamp, use more.Can be divided into series resonant circuit, antiresonant circuit, series parallel resonance circuit according to basic circuit structure.
More than a kind of metal halogen lamp electric ballast that the utility model provided has been carried out detailed introduction; For one of ordinary skill in the art; Thought according to the utility model embodiment; The part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.
Claims (6)
1. metal halogen lamp electric ballast; Be applied to light Metal halogen lamp through low-voltage dc power supply; It is characterized in that; Comprise that filter circuit, inverse-excitation converting circuit, controller, auxiliary power supply circuit, full bridge inverter, full bridge inverter drive and the high-tension ignition circuit, wherein said filter circuit input is connected with low-voltage direct input power supply, and the output of said filter circuit is connected with inverse-excitation converting circuit; The output of said inverse-excitation converting circuit is connected with said full bridge inverter with said auxiliary power supply circuit; Said controller is connected with said inverse-excitation converting circuit; The output of said auxiliary power supply circuit is connected with full bridge inverter; Said full bridge inverter drives and is connected with said full bridge inverter; The output of said full bridge inverter connects the high-tension ignition circuit; Said high-tension ignition circuit and Metal halogen lamp also connect, and are used to light said Metal halogen lamp.
2. metal halogen lamp electric ballast according to claim 1; It is characterized in that; Said inverse-excitation converting circuit further comprises anti-violent change depressor; With first switching tube that the former limit inductance of said anti-violent change depressor is connected, the output rectifier diode of connecting and the output capacitance parallelly connected with said secondary inductance with the secondary inductance of said anti-violent change depressor.
3. metal halogen lamp electric ballast according to claim 2 is characterized in that said metal halogen lamp electric ballast further comprises clamp circuit,
Said clamp circuit comprises first resistance, first electric capacity parallelly connected with said first resistance, and with first diode of said first resistance and said first capacitances in series, said clamp circuit and the parallelly connected setting of said former limit inductance.
4. according to claim 1 or 3 described metal halogen lamp electric ballasts; It is characterized in that; Said full bridge inverter comprises second switch pipe, the 3rd switching tube, the 4th switching tube and the 5th switching tube; Said second switch pipe is connected with said the 3rd switching tube, and said the 4th switching tube is connected with said the 5th switching tube, and said second switch pipe is parallelly connected with the series arm of said the 5th switching tube with said the 4th switching tube with the series arm of said the 3rd switching tube.
5. metal halogen lamp electric ballast according to claim 4; It is characterized in that; Said auxiliary power supply circuit comprises that transient voltage suppresses diode, second resistance and second electric capacity; Said transient voltage suppresses diode and is connected in series the said second resistance other end and said second capacitance series with second resistance, one end.
6. metal halogen lamp electric ballast according to claim 1 is characterized in that, said high-tension ignition circuit adopts the high-frequency resonant sparking mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200073174U CN202444684U (en) | 2012-01-05 | 2012-01-05 | Metal halide lamp electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200073174U CN202444684U (en) | 2012-01-05 | 2012-01-05 | Metal halide lamp electronic ballast |
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| Publication Number | Publication Date |
|---|---|
| CN202444684U true CN202444684U (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200073174U Expired - Fee Related CN202444684U (en) | 2012-01-05 | 2012-01-05 | Metal halide lamp electronic ballast |
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| CN (1) | CN202444684U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105611707A (en) * | 2015-11-02 | 2016-05-25 | 林晓东 | Hot start ballast and low-frequency full bridge circuit of metal halide lamp |
-
2012
- 2012-01-05 CN CN2012200073174U patent/CN202444684U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105611707A (en) * | 2015-11-02 | 2016-05-25 | 林晓东 | Hot start ballast and low-frequency full bridge circuit of metal halide lamp |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Wu Jianfeng Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Wu Jianfeng Document name: Notification of Termination of Patent Right |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20140105 |