CN104661418A - Electronic ballast for ceramic metal halide lamp - Google Patents
Electronic ballast for ceramic metal halide lamp Download PDFInfo
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- CN104661418A CN104661418A CN201510077915.7A CN201510077915A CN104661418A CN 104661418 A CN104661418 A CN 104661418A CN 201510077915 A CN201510077915 A CN 201510077915A CN 104661418 A CN104661418 A CN 104661418A
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- circuit
- ballast
- control circuit
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Abstract
The invention discloses an electronic ballast for a ceramic metal halide lamp. The electronic ballast comprises a high-voltage ignition circuit, a full bridge inversion circuit, a control circuit, a flyback boost circuit, an input filter circuit and an inverse-connection-proof protection circuit, wherein the high-voltage ignition circuit, the full bridge inversion circuit and the control circuit are connected with the ceramic metal halide lamp; the flyback boost circuit is connected with the full bridge inversion circuit and the control circuit; the input filter circuit is connected to the flyback boost circuit; the inverse-connection-proof protection circuit is connected with the input filter circuit. The control circuit is a voltage and current double closed loop control system with a single chip microcomputer as a core and comprises a power control circuit and an abnormality protection circuit. The single chip microcomputer is used for control, reliable ignition can be realized, constant-power control can be realized smoothly, the ballast can be protected under abnormal conditions, the service life of a lamp tube and the ballast is effectively prolonged, and the electronic ballast has high efficiency and meets requirements for energy conservation and environmental protection.
Description
Technical field
The present invention relates to a kind of electric ballast, be specifically related to the electric ballast for ceramic gold-halogen lamp.
Background technology
Along with the deep popularization of green illumination and the develop rapidly of battery technology, progressively popularized from simple Landscape Lighting to key lighting by battery-driven lighting apparatus.Ceramic gold-halogen lamp is as the energy-efficient light source of a kind of novel HID, due to good characteristics such as its light efficiency are high, color rendering is good, the life-span is long, color temperature shift is little, be widely used in market, gymnasium, airport, harbour, landscape light in city and other advanced lightings occasion.In addition, it can be used as the supporting light source of solar energy lamp to be also most suitable, solar energy electroplax can be utilized to charge in batteries daytime based on battery-driven ceramic gold-halogen lamp, night, storage battery was light source power supply, belonged to the green illumination of promotion.
, there is performance stable not in the existing electric ballast be applicable to based on battery-driven ceramic gold-halogen lamp, accurate power limitation control can not be realized and under various abnormality protection not enough, cause the problem that ballast useful life is short.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide the electric ballast for ceramic gold-halogen lamp, stable performance, realize accurate power limitation control and various abnormal condition protection, extend the useful life of ballast.
In order to achieve the above object, the present invention is by the following technical solutions:
For the electric ballast of ceramic gold-halogen lamp, described electric ballast comprises the high-tension ignition circuit, full bridge inverter and the control circuit that are connected with ceramic gold-halogen lamp, the flyback booster circuit be connected with described full bridge inverter and control circuit, be connected to the input filter circuit on described flyback booster circuit, the reverse connection prevention protection circuit be connected with described input filter circuit; Voltage, the current double closed-loop control system of described control circuit to be one with single-chip microcomputer be core, comprise power control circuit and abnormity protection circuit.
Further, the anti exciting converter that described flyback booster circuit is arranged in also is provided with the clamp circuit of the peak voltage for absorbing switching tube.
Further, described electric ballast be use damage fluorescent tube less, light a fire without the need to the self-excitation of fiery switching device.
The invention has the beneficial effects as follows:
The present invention adopts single-chip microcomputer to control, and reliably can light a fire, enter power limitation control more smoothly; can protect ballast in abnormal cases; in the useful life of effective prolonging lamp tube and ballast, there is higher efficiency, meet the requirement of green, energy-saving and environmental protection.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is the simplification circuit diagram of anti exciting converter of the present invention;
Number in the figure illustrates: 1-ceramic gold-halogen lamp, 2-electric ballast, 21-reverse connection prevention protection circuit, 22-input filter circuit, 23-flyback booster circuit, 24-full bridge inverter, 25-high-tension ignition circuit, 26-control circuit.
Embodiment
Below by embodiment, the invention will be further described by reference to the accompanying drawings.
As shown in Figure 1, for the electric ballast of ceramic gold-halogen lamp, this electric ballast 2 comprises reverse connection prevention protection circuit 21, input filter circuit 22, flyback booster circuit 23, full bridge inverter 24, high-tension ignition circuit 25, control circuit 26.Wherein, reverse connection prevention protection circuit 21 is connected with input filter circuit 22; input filter circuit 22 is connected on flyback booster circuit 23; flyback booster circuit 23 is connected with full bridge inverter 24 and control circuit 26, and high-tension ignition circuit 25, full bridge inverter 24 and control circuit 26 are connected with ceramic gold-halogen lamp 1.
Voltage, the current double closed-loop control system of control circuit 26 to be one with single-chip microcomputer be core, comprise power control circuit and abnormity protection circuit.Because ceramic gold-halogen lamp has negative resistance charactertistic, before lamp does not puncture, lamp load is equivalent to open circuit, and single-chip microcomputer exports the drive singal of a big space rate to switching tube Q, obtains with this busbar voltage being greater than 370V; Use as a lamp bright after, modulating voltage drops to rapidly about 25% of steady state voltage, and lamp current is comparatively large, suitably reduces the duty ratio of drive singal, is controlled by lamp current in prescribed limit, prevent lamp power excessive, make lamp smoothly enter power limitation control; Single-chip microcomputer is according to the modulating voltage detected, determine whether to enter power limitation control, once modulating voltage reaches set point, single-chip microcomputer enters power limitation control immediately, when power is less than 35W, increase drive singal duty ratio, otherwise reduction duty ratio, and the difference size of the power calculated according to sampling and rated power, the amplitude of setting change in duty cycle, realize the quick response of feedback loop, realize accurate power limitation control with this.
The anti exciting converter that flyback booster circuit 23 is arranged in also is provided with the clamp circuit of the peak voltage for absorbing switching tube.Anti exciting converter breaker in middle pipe bears higher switch stress at shutdown moment, and the anti exciting converter with clamp circuit effectively can absorb the peak voltage of switching tube, improves circuit reliability.As shown in Figure 2, its operation principle is: when switching tube Q opens, primary side current of transformer linearly rises, and is stored in transformer by energy with the form of magnetic energy, secondary rectifier diode D
1reverse-biased cut-off, output capacitance C
0powering load; When switching tube Q turns off, secondary rectifier diode D
1conducting, the energy in transformer is sent to secondary, to output capacitance C
0charging also provides energy to load.In addition, in the present invention, D
0be fast diode, the switching speed of switching tube can be caught up with its reverse recovery time, ensure the assimilation effect of due to voltage spikes.
The ignition voltage of ceramic gold-halogen lamp 2 is 3 ~ 5kV, and this practical routine electric ballast 2 is the self-excitation igniting using damage fluorescent tube less, without the need to the switching device such as gap, thyristor, greatly improves the reliability of whole firing circuit.
The operation principle that the present embodiment realizes abnormal condition protection is as follows:
By sampled input voltage or output voltage, single-chip microcomputer judges whether ballast occurs abnormal conditions, when input voltage exceeds assigned voltage scope, single-chip microcomputer outputs signal immediately, turns off single-chip microcomputer, the safety of protection storage battery; When finding that ceramic gold-halogen lamp is in open circuit or short circuit, also single-chip microcomputer will be turned off.As ballast cut-off 5min, after lamp cooling, re-start igniting, if ballast starts unsuccessfully 3 times, turn off ballast, to protect the safety of ballast and storage battery.In addition, after ballast enters invariable power work, detect light tube electric voltage, when light tube electric voltage is greater than 130V, judges that fluorescent tube is aging, turn off ballast, ensure the safety of lamp and ballast.
Claims (3)
1. for the electric ballast of ceramic gold-halogen lamp, it is characterized in that: described electric ballast (2) comprises the high-tension ignition circuit (25), full bridge inverter (24) and the control circuit (26) that are connected with ceramic gold-halogen lamp (1), the flyback booster circuit (23) be connected with described full bridge inverter (24) and control circuit (26), be connected to the input filter circuit (22) on described flyback booster circuit (23), the reverse connection prevention protection circuit (21) be connected with described input filter circuit (22); Voltage, the current double closed-loop control system of described control circuit 26 to be one with single-chip microcomputer be core, comprise power control circuit and abnormity protection circuit.
2. the electric ballast for ceramic gold-halogen lamp according to claim 1, is characterized in that: the anti exciting converter that described flyback booster circuit (23) is arranged in also is provided with the clamp circuit of the peak voltage for absorbing switching tube.
3. the electric ballast for ceramic gold-halogen lamp according to claim 1, is characterized in that: described electric ballast (2) be use damage fluorescent tube less, light a fire without the need to the self-excitation of switching device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510077915.7A CN104661418A (en) | 2015-02-14 | 2015-02-14 | Electronic ballast for ceramic metal halide lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510077915.7A CN104661418A (en) | 2015-02-14 | 2015-02-14 | Electronic ballast for ceramic metal halide lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104661418A true CN104661418A (en) | 2015-05-27 |
Family
ID=53251978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510077915.7A Pending CN104661418A (en) | 2015-02-14 | 2015-02-14 | Electronic ballast for ceramic metal halide lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104661418A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101175360A (en) * | 2007-11-22 | 2008-05-07 | 杭州电子科技大学 | High-voltage triggering circuit for ballast of vehicle xenon front lamp |
| CN201114931Y (en) * | 2007-08-01 | 2008-09-10 | 嘉兴市光泰照明有限公司 | Electronic ballast for small power metal halogen lamp |
| CN101453817A (en) * | 2008-12-30 | 2009-06-10 | 山东华鼎伟业能源科技有限公司 | Apparatus for street illumination |
| CN102123555A (en) * | 2011-04-08 | 2011-07-13 | 重庆大学 | HID (High Intensity Discharge) lamp electronic ballast and multimode control method thereof |
| CN202396068U (en) * | 2011-12-16 | 2012-08-22 | 泉州市本电照明电器有限公司 | Electronic ballast of metal halogen lamp |
| CN203775502U (en) * | 2014-03-10 | 2014-08-13 | 李丽 | Drive circuit control system of xenon lamp electronic ballast |
-
2015
- 2015-02-14 CN CN201510077915.7A patent/CN104661418A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201114931Y (en) * | 2007-08-01 | 2008-09-10 | 嘉兴市光泰照明有限公司 | Electronic ballast for small power metal halogen lamp |
| CN101175360A (en) * | 2007-11-22 | 2008-05-07 | 杭州电子科技大学 | High-voltage triggering circuit for ballast of vehicle xenon front lamp |
| CN101453817A (en) * | 2008-12-30 | 2009-06-10 | 山东华鼎伟业能源科技有限公司 | Apparatus for street illumination |
| CN102123555A (en) * | 2011-04-08 | 2011-07-13 | 重庆大学 | HID (High Intensity Discharge) lamp electronic ballast and multimode control method thereof |
| CN202396068U (en) * | 2011-12-16 | 2012-08-22 | 泉州市本电照明电器有限公司 | Electronic ballast of metal halogen lamp |
| CN203775502U (en) * | 2014-03-10 | 2014-08-13 | 李丽 | Drive circuit control system of xenon lamp electronic ballast |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |
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| WD01 | Invention patent application deemed withdrawn after publication |