CN102497714B - Two-stage alternating current voltage transformation electrodeless lamp - Google Patents
Two-stage alternating current voltage transformation electrodeless lamp Download PDFInfo
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- CN102497714B CN102497714B CN201110413677.4A CN201110413677A CN102497714B CN 102497714 B CN102497714 B CN 102497714B CN 201110413677 A CN201110413677 A CN 201110413677A CN 102497714 B CN102497714 B CN 102497714B
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- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
Disclosed is a two-stage alternating current voltage transformation electrodeless lamp. A primary coil N1 of a first transformer T1 is connected in series with a primary coil N2 of a second transformer T2; two ends of a secondary coil N3 of the first transformer T1 are connected with an electromagnetic coil of the electrodeless lamp; the primary coil N1 of the first transformer T1 is sequentially connected in series with a diode D1 and an electronic switch K1 and then grounded; the diode D1 is connected in series with the electronic switch K1 and then connected in parallel with the capacitor C1; the primary coil N1 of the first transformer T1 is sequentially connected in series with the primary coil N2 of the second transformer T2, a relay K3, a diode D2 and an electronic switch K2 and then grounded; and the diode D2 is connected in series with the electronic switch K2 and then connected in parallel with a capacitor C2. A series resonance circuit is formed by a primary center tap of the transformer and the capacitor C1, and the turns ratio of input number of turns to output number of turns of the transformer is small, so that a boost circuit is formed and output high frequency and voltage enable mercury in a lamp tube to be ionized. When the lamp is turned on, the other primary input center tap and the capacitor C2 form the other resonance circuit to work, and input and output of the transformer form a step-down circuit.
Description
Technical field
The present invention relates to Non-polarized lamp, especially the drive circuit of Non-polarized lamp.
Background technology
Non-polarized lamp is that one represents the high light efficiency of lighting technology, the new type light source of high-color rendering future thrust.This green illumination new light sources is called " beginning of the new revolution of lighting field " by illumination expert.But disturb owing to there is to start, cold-starting difficulty easily puncture resonant capacitance and a series of problem such as conversion efficiency is low often by appellation " technology is immature " product.But if the problems referred to above can be solved, it will become the regeneration product of the most promising green energy conservation lighting source of 21 century.
Principle of products: Non-polarized lamp is made up of ac generator, coupler and bulb three parts.It is to be coupled in lamp in the mode of induction by the electromagnetic field of radio-frequency generator, makes the metal gas avalanche ionization in bulb, forms high-speed ion; The fluorescent material that high-speed ion bombards bulb inner wall continuously makes it send visible ray.
The problem that but ac high-voltage disturbs when the startup of Non-polarized lamp product in the market is still effectively solved, and the serious accident of " Non-polarized lamp disturbs aerial navigation system " has just occurred China Shenzhen Airport in 2008.
Non-polarized lamp high-power and heat dissipation problem, not good breakthrough all the time, this is lowly also relevant to its light efficiency.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of two-part alternating current voltage transformation electrodeless lamp, has solved the problem that above-mentioned Non-polarized lamp exists.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of two-part alternating current voltage transformation electrodeless lamp, comprise the first transformer T1 and the second transformer T2, the primary coil N2 series connection of the primary coil N1 of described the first transformer T1 and the second transformer T2, the two ends of secondary coil N3 and the solenoid of Non-polarized lamp of described the first transformer T1 are connected; Ground connection after the primary coil N1 of described the first transformer T1 connects with diode D1 and electronic switch K1 successively, in parallel with capacitor C 1 after diode D1 and electronic switch K1 series connection, primary coil N1, diode D1, electronic switch K1 and the capacitor C 1 of described the first transformer T1 form a LC resonant circuit; Ground connection after the primary coil N1 of described the first transformer T1 connects with primary coil N2, relay K 3, diode D2 and the electronic switch K2 of the second transformer T2 successively, in parallel with capacitor C 2 after diode D2 and electronic switch K2 series connection, the primary coil N1 of described the first transformer T1, primary coil N2, relay K 3, diode D2, electronic switch K2 and the capacitor C 2 of the second transformer T2 form the 2nd LC resonant circuit; Described electronic switch K1, electronic switch K2 and relay K 3 are driven by drive circuit; N1 < N3, N1+N2 > N3.
Operation principle of the present invention: first utilize single-chip microcomputer closed relay K3, the 2nd LC oscillating circuit that the second transformer T2, relay K 3, diode D2, electronic switch K2 and capacitor C 2 form is not worked; Now the primary coil N1 of transformer T1 enough becomes a pressure-increasning state with secondary coil N3; Single-chip microcomputer makes electronic switch K1 conducting, gives the primary coil N1 charging of the first transformer T1, and when electronic switch K1 cut-off, primary coil N1 and the capacitor C 1 of the first transformer T1 form a series resonant circuit, the sine wave of the first transformer T1 output one-period.Inductance coil and electric capacity can produce negative pressure, and diode D1 can not fallen by the built-in backward diode short circuit of electronic switch K1 sinusoidal wave negative pressure, and the output that now energy is all coupled to transformer enters on the solenoid of Non-polarized lamp.The ac high-voltage peak-to-peak value of exporting is fixed, and in the time that ambient temperature is low, this High Pressure time is a little long, otherwise shorter, can be as traditional Non-polarized lamp, and the solid tribute of fluorescent tube there is not ionization voltage to raise.When lit, single-chip microcomputer cuts out electronic switch K1, and a LC oscillating circuit is closed; Start electronic switch K2 simultaneously, open relay K 3, make the 2nd LC oscillating circuit work, now the primary coil of total transformer is to be composed in series by N1 and N2, due to N1+N2 > N3, total transformer forms the effect of step-down, the sine wave of total transformer output one-period.Inductance coil and electric capacity can produce negative pressure, and diode D2 can not fallen by the built-in backward diode short circuit of electronic switch K2 sinusoidal wave negative pressure, and the output that now energy is all coupled to transformer enters on the solenoid of Non-polarized lamp.In the time of negative pressure back to zero, be just in time the Best Point to coil charges, all will produce in addition power loss, thereby cause electronic switch and transformer heating.If not step-down makes input have negative pressure again, power output can be very large.
As improvement, described electronic switch K1, K2 are metal-oxide-semiconductor or IGBT.
As improvement, described drive circuit mainly comprises single-chip microcomputer, shown in single-chip microcomputer control described electronic switch K1, electronic switch K1 and relay K 3 by driver module U respectively.
As improvement, be provided with the testing circuit for detection of Non-polarized lamp state, described testing circuit is connected with described single-chip microcomputer.
As improvement, described testing circuit is feedback coil N4, and described feedback coil N4 is corresponding with primary coil N1 and N2 after series connection, and described feedback coil N4 is connected with described single-chip microcomputer by divider resistance, N1+N2 > N4.When lit, single-chip microcomputer arrives by the voltage detecting of the divider resistance of feedback coil N4, and at this moment single-chip microcomputer cuts out a LC oscillating circuit, starts the 2nd LC oscillating circuit.Feedback coil N4 provides the ruuning situation of waveform to single-chip microcomputer, thereby reaches accurate control.
As improvement, external voltage is powered to transformer T1, T2 by power factor compensation booster circuit.Provide a stable high pressure with the booster circuit of power factor compensation, power factor reaches more than 0.99.
As improvement, external voltage is powered to single-chip microcomputer and driver module U by power factor compensation booster circuit, accessory power supply successively.Accessory power supply produces three groups of voltage V1, V2 and V3, and wherein V3 is negative pressure.
As improvement, external voltage forms the high voltage direct current of 380～400V after by power factor compensation booster circuit.
The beneficial effect that the present invention compared with prior art brought is:
The principle of the invention is on same transformer, to realize AC boosting and step-down, Non-polarized lamp needs high-frequency and high-voltage by the solid tribute ionization of fluorescent tube reason while startup, now utilize primary center tap and the capacitor C 1 of transformer to form series resonant circuit, the turn ratio of the input turn ratio output stage of transformer is little, form a booster circuit, make the high-frequency and high-voltage of output can reach the tribute ionization that makes fluorescent tube; After lamp is bright, use other elementary input tap and C2 to form another resonant circuit work, make the input and output of transformer enough become a reduction voltage circuit.This circuit can solve traditional Non-polarized lamp and utilize fluorescent tube solenoid and electric capacity to form resonant circuit to reach the object of lighting a lamp, and its wattage size is just decided by the equivalent resistance of fluorescent tube after bright light; Could not isolate with fluorescent tube coil and not only do load but also do the power loss that filter brings startup ac high-voltage in addition, heating and cold-starting be because the more difficult ionization resonance potential of fluorescent tube can be problems such as resonant capacitance puncture.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present invention.
Embodiment
Below in conjunction with Figure of description, the invention will be further described.
A kind of two-part alternating current voltage transformation electrodeless lamp, comprise the first transformer T1 and the second transformer T2, the primary coil N2 series connection of the primary coil N1 of described the first transformer T1 and the second transformer T2, the two ends of secondary coil N3 and the solenoid of Non-polarized lamp of described the first transformer T1 are connected, N1 < N3, N1+N2 > N3.Ground connection after the primary coil N1 of described the first transformer T1 connects with diode D1 and electronic switch K1 successively, in parallel with capacitor C 1 after diode D1 and electronic switch K1 series connection, primary coil N1, diode D1, electronic switch K1 and the capacitor C 1 of described the first transformer T1 form a LC resonant circuit.Ground connection after the primary coil N1 of described the first transformer T1 connects with primary coil N2, relay K 3, diode D2 and the electronic switch K2 of the second transformer T2 successively, in parallel with capacitor C 2 after diode D2 and electronic switch K2 series connection, the primary coil N1 of described the first transformer T1, primary coil N2, relay K 3, diode D2, electronic switch K2 and the capacitor C 2 of the second transformer T2 form the 2nd LC resonant circuit.
Described electronic switch K1, K2 are metal-oxide-semiconductor or IGBT, and described electronic switch K1, electronic switch K2 and relay K 3 are driven by drive circuit.In the present embodiment, drive circuit mainly comprises single-chip microcomputer, shown in single-chip microcomputer control described electronic switch K1, electronic switch K1 and relay K 3 by driver module U respectively.
Be provided with the testing circuit for detection of Non-polarized lamp state, in the present embodiment, described testing circuit is feedback coil N4, described feedback coil N4 is corresponding with primary coil N1 and N2 after series connection, N1+N2 > N4, described feedback coil N4 is connected with described single-chip microcomputer by divider resistance.
External voltage is powered to transformer T1, T2 by power factor compensation booster circuit; External voltage is powered to single-chip microcomputer and driver module U by power factor compensation booster circuit, accessory power supply successively, and accessory power supply produces three groups of voltage V1, V2 and V3, and wherein V3 is negative pressure, and V2 is for single-chip microcomputer, and V1 and V3 are for driver module; External voltage forms the high voltage direct current of 380～400V after by power factor compensation booster circuit.
Operation principle of the present invention: first utilize single-chip microcomputer closed relay K3, the 2nd LC oscillating circuit that the second transformer T2, relay K 3, diode D2, electronic switch K2 and capacitor C 2 form is not worked; Now the primary coil N1 of transformer T1 enough becomes a pressure-increasning state with secondary coil N3; Single-chip microcomputer makes electronic switch K1 conducting, gives the primary coil N1 charging of the first transformer T1, and when electronic switch K1 cut-off, primary coil N1 and the capacitor C 1 of the first transformer T1 form a series resonant circuit, the sine wave of the first transformer T1 output one-period.Inductance coil and electric capacity can produce negative pressure, and diode D1 can not fallen by the built-in backward diode short circuit of electronic switch K1 sinusoidal wave negative pressure, and the output that now energy is all coupled to transformer enters on the solenoid of Non-polarized lamp.The ac high-voltage peak-to-peak value of exporting is fixed, and in the time that ambient temperature is low, this High Pressure time is a little long, otherwise shorter, can be as traditional Non-polarized lamp, and the solid tribute of fluorescent tube there is not ionization voltage to raise.When lit, single-chip microcomputer cuts out electronic switch K1, and a LC oscillating circuit is closed; Start electronic switch K2 simultaneously, open relay K 3, make the 2nd LC oscillating circuit work, now the primary coil of total transformer is to be composed in series by N1 and N2, due to N1+N2 > N3, total transformer forms the effect of step-down, the sine wave of total transformer output one-period.Inductance coil and electric capacity can produce negative pressure, and diode D2 can not fallen by the built-in backward diode short circuit of electronic switch K2 sinusoidal wave negative pressure, and the output that now energy is all coupled to transformer enters on the solenoid of Non-polarized lamp.In the time of negative pressure back to zero, be just in time the Best Point to coil charges, all will produce in addition power loss, thereby cause electronic switch and transformer heating.If not step-down makes input have negative pressure again, power output can be very large.
The principle of the invention is on same transformer, to realize AC boosting and step-down, Non-polarized lamp needs high-frequency and high-voltage by the solid tribute ionization of fluorescent tube reason while startup, now utilize primary center tap and the capacitor C 1 of transformer to form series resonant circuit, the turn ratio of the input turn ratio output stage of transformer is little, form a booster circuit, make the high-frequency and high-voltage of output can reach the tribute ionization that makes fluorescent tube; After lamp is bright, use other elementary input tap and C2 to form another resonant circuit work, make the input and output of transformer enough become a reduction voltage circuit.This circuit can solve traditional Non-polarized lamp and utilize fluorescent tube solenoid and electric capacity to form resonant circuit to reach the object of lighting a lamp, and its wattage size is just decided by the equivalent resistance of fluorescent tube after bright light; Could not isolate with fluorescent tube coil and not only do load but also do the power loss that filter brings startup ac high-voltage in addition, heating and cold-starting be because the more difficult ionization resonance potential of fluorescent tube can be problems such as resonant capacitance puncture.
Claims (9)
1. a two-part alternating current voltage transformation electrodeless lamp, it is characterized in that: comprise the first transformer T1 and the second transformer T2, the primary coil N2 series connection of the primary coil N1 of described the first transformer T1 and the second transformer T2, the two ends of secondary coil N3 and the solenoid of Non-polarized lamp of described the first transformer T1 are connected; Ground connection after the primary coil N1 of described the first transformer T1 connects with diode D1 and electronic switch K1 successively, in parallel with capacitor C 1 after diode D1 and electronic switch K1 series connection, primary coil N1, diode D1, electronic switch K1 and the capacitor C 1 of described the first transformer T1 form a LC resonant circuit; Ground connection after the primary coil N1 of described the first transformer T1 connects with primary coil N2, relay K 3, diode D2 and the electronic switch K2 of the second transformer T2 successively, in parallel with capacitor C 2 after diode D2 and electronic switch K2 series connection, the primary coil N1 of described the first transformer T1, primary coil N2, relay K 3, diode D2, electronic switch K2 and the capacitor C 2 of the second transformer T2 form the 2nd LC resonant circuit; Described electronic switch K1, electronic switch K2 and relay K 3 are driven by drive circuit; N1 < N3, N1+N2 > N3.
2. a kind of two-part alternating current voltage transformation electrodeless lamp according to claim 1, is characterized in that: described electronic switch K1, K2 are metal-oxide-semiconductor.
3. a kind of two-part alternating current voltage transformation electrodeless lamp according to claim 1, is characterized in that: described electronic switch K1, K2 are IGBT.
4. a kind of two-part alternating current voltage transformation electrodeless lamp according to claim 1, is characterized in that: described drive circuit comprises single-chip microcomputer, shown in single-chip microcomputer control described electronic switch K1, electronic switch K1 and relay K 3 by driver module U respectively.
5. a kind of two-part alternating current voltage transformation electrodeless lamp according to claim 4, is characterized in that: be provided with the testing circuit for detection of Non-polarized lamp state, described testing circuit is connected with described single-chip microcomputer.
6. a kind of two-part alternating current voltage transformation electrodeless lamp according to claim 5, it is characterized in that: described testing circuit is feedback coil N4, described feedback coil N4 is corresponding with primary coil N1 and N2 after series connection, and described feedback coil N4 is connected with described single-chip microcomputer by divider resistance; N1+N2 > N4.
7. a kind of two-part alternating current voltage transformation electrodeless lamp according to claim 1, is characterized in that: external voltage is powered to transformer T1, T2 by power factor compensation booster circuit.
8. a kind of two-part alternating current voltage transformation electrodeless lamp according to claim 7, is characterized in that: external voltage is powered to single-chip microcomputer and operational amplifier U by power factor compensation booster circuit, accessory power supply successively.
9. a kind of two-part alternating current voltage transformation electrodeless lamp according to claim 7, is characterized in that: external voltage forms the high voltage direct current of 380～400V after by power factor compensation booster circuit.
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| CN201110413677.4A CN102497714B (en) | 2011-12-10 | 2011-12-10 | Two-stage alternating current voltage transformation electrodeless lamp |
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| CN201110413677.4A CN102497714B (en) | 2011-12-10 | 2011-12-10 | Two-stage alternating current voltage transformation electrodeless lamp |
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| CN102497714B true CN102497714B (en) | 2014-06-11 |
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| CN102905449A (en) * | 2012-10-29 | 2013-01-30 | 林汉通 | High frequency generator, electrodeless lamp driving method and electrodeless lamp ballast |
| CN103138606A (en) * | 2013-03-19 | 2013-06-05 | 青岛乾程电子科技有限公司 | Energy conservation type switch power source |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4954754A (en) * | 1988-05-02 | 1990-09-04 | Nilssen Ole K | Controlled electronic ballast |
| US6034488A (en) * | 1996-06-04 | 2000-03-07 | Lighting Control, Inc. | Electronic ballast for fluorescent lighting system including a voltage monitoring circuit |
| CN202068653U (en) * | 2011-04-03 | 2011-12-07 | 张根清 | Double push-pull oscillation power synthesis electroless lamp utilizing direct-current low-voltage power supply |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0845680A (en) * | 1994-07-29 | 1996-02-16 | Toshiba Lighting & Technol Corp | Discharge tube lighting device, exposing device, and liquid crystal display device |
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- 2011-12-10 CN CN201110413677.4A patent/CN102497714B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4954754A (en) * | 1988-05-02 | 1990-09-04 | Nilssen Ole K | Controlled electronic ballast |
| US6034488A (en) * | 1996-06-04 | 2000-03-07 | Lighting Control, Inc. | Electronic ballast for fluorescent lighting system including a voltage monitoring circuit |
| CN202068653U (en) * | 2011-04-03 | 2011-12-07 | 张根清 | Double push-pull oscillation power synthesis electroless lamp utilizing direct-current low-voltage power supply |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平8-45680A 1996.02.16 |
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