WO2011151107A1 - Circuit arrangement for operating a discharge lamp - Google Patents
Circuit arrangement for operating a discharge lamp Download PDFInfo
- Publication number
- WO2011151107A1 WO2011151107A1 PCT/EP2011/056277 EP2011056277W WO2011151107A1 WO 2011151107 A1 WO2011151107 A1 WO 2011151107A1 EP 2011056277 W EP2011056277 W EP 2011056277W WO 2011151107 A1 WO2011151107 A1 WO 2011151107A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- terminal
- coupled
- circuit arrangement
- voltage
- control device
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
- H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
- H05B41/2985—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions
Definitions
- the present invention relates to a circuit arrangement for operating a discharge lamp, comprising a first and a second terminal for coupling to a DC supply voltage, an inverter having a bridge circuit comprising at least a first and a second electronic switch, wherein between the first and the second electronic switch, a first bridge center is formed, wherein the series circuit of the first and the second electronic switch between the first and the second terminal for the DC supply voltage is coupled, a control device for driving at least the first and the second electronic switch, a first and a second terminal for coupling to the hot filament of the discharge lamp, an inductor having a first and a second terminal, the first terminal of the inductor coupled to the first bridge means ⁇ point, the second a onnection the home productivity with the first terminal is coupled to the hot filament of the discharge lamp, a first Kondensa ⁇ gate having a first and a second terminal, said first terminal is coupled to the first terminal for the hot ⁇ SSE Wendel, wherein the second terminal is coupled to a reference potential, a
- the prior art of the present invention is based Proble ⁇ kinematics is that electronic ballasts for discharge lamps whose firing principle of producing high ignition voltages.
- electronic ballasts for discharge lamps whose firing principle of producing high ignition voltages.
- the electronic ballast usually checks whether the cold filament or the cold end of the lamp is present.
- the following explanations switchgear quality electronic starters, which have a transformational spiral ⁇ heating. In this case, either a separate heating transformer is used for preheating or provided an additional winding on the lamp inductor.
- FIG. 1 For a more detailed explanation of the problem underlying the present invention, reference is made to FIG. 1, in which the sections of known circuit arrangements which are of interest in connection with the present invention are shown schematically.
- FIGS. 1 a to 1 d show a discharge lamp F1 with a hot filament W h and a cold filament W c .
- the term "hot coil” refers in the context of the present invention, the coil which is coupled to the first bridge center, and "cold coil", the coil which is coupled to the constructionspotenti ⁇ al.
- the connections of the hot-wire electronic ballast are labeled AI and A2, those for the cold coils A3 and A4.
- the secondary winding of a heating transformer, not shown, used for heating the coil W c is characterized with SEK1 be ⁇ .
- the cold coil is W c of the discharge lamp FL is connected to a confusionspotenti ⁇ al, in the present composition.
- a simple measuring path makes it possible for a control device yC to determine whether the coil W c is present.
- the terminal A3 for the cold coil via a voltage divider comprising the resistive resistors R3 and R4, with a Auxiliary voltage source U H coupled.
- the tap of the voltage clamping ⁇ divider being coupled to an input of the control device yC.
- decoupling element which is coupled se ⁇ riell to the secondary winding SEK1.
- the decoupling element represents a capacitor C s
- the decoupling element represents a diode D1.
- the Sym ⁇ geometry can be an additional second Di ⁇ ode in series to the hot filament W produce h.
- these diodes must be voltage-proof and fast enough so that they can withstand short-term stresses with the ignition voltage in the event of defective lamps.
- the helix Wc is not coupled directly to the reference potential. Instead, a coupling capacitor C K i is connected between the discharge lamp Fl and the reference potential. This results in comparison to the variants shown in Figures la and lb greater robustness against miswiring. However, no direct connection of the coil is now W c ⁇ longer available for modespo potential.
- connection A4 for the cold filament W c is coupled via an ohmic resistor R8 to the DC supply voltage, which is usually the intermediate circuit voltage U zw .
- the resistance R8 has a high resistance.
- the voltage across the coupling capacitor C K i is dependent on the current operating state and can be between 0 V and the Maxi ⁇ malwert the intermediate circuit voltage U ZW, for example 400 V, are.
- the disadvantage of the variants shown in FIGS. 1c and 1d therefore consists in the necessary higher dielectric strength of the decoupling element, which in FIG. 1c represents the capacitor C s and in FIG. 1 d the diode D 1.
- EP 1 343 359 A2 Another prior art is known from EP 1 343 359 A2, which relates to an operating circuit for a low-pressure discharge lamp with EOL early detection via a measurement of the DC voltage between the electrodes of the low-pressure discharge lamp. In this case, by checking a respective connection via the respective electrode to a respective reference potential, an electrode scan can be carried out.
- the object of the present invention is therefore to develop a circuit arrangement mentioned in such a way that on the one hand the components that are necessary for a reliable test, whether a discharge lamp is coupled to the electronic ballast, as little space as possible, on the other hand, use in An electronic ballast with spiral detection is possible without affecting the coil detection.
- This object is achieved by a circuit arrangement having the features of patent claim 1.
- the invention is based on the insight that, to enables ⁇ lichung a helix recognition of the capacitor, the se- Riell to secondary winding SEK1 is arranged, must continue to have a high capacity. However, it can be realized with a small design if the maximum voltage drop across this capacitor is limited. For this purpose, a small resistive ⁇ resistance is sufficient, the series circuit of the first secondary winding and the capacitor C s is connected in parallel. Since ⁇ at the ohmic resistance as an SMD component ⁇ out leads may be. The space required by the additional resistor corresponds to only a fraction of the construction ⁇ space, the capacitor C s would occupy, which has a high capacity and be of a high voltage ⁇ is inserted.
- a preferred embodiment is characterized in that the circuit arrangement further comprises a second voltage divider having a sixth and a seventh ohmic resistance, wherein the secondistsstei ⁇ ler is coupled between the first and the second terminal for the DC supply voltage, wherein the tap of the second voltage part is coupled to an input of the control device.
- the procedure reflects the fact that - for example in egg ⁇ ner limiting the voltage across the capacitor C s so- far, that a 63-volt capacitor can be used, - the voltage swing at the input of the microprocessor only in the range of 5 to 10% of the original measurement signal, that is, the voltage at the input of the microprocessor without the use of the fifth ohmic resistance, is.
- PFC power factor correction
- the intermediate circuit voltage that is, the DC supply voltage
- the power factor correction is usually activated only after detection of the coil W c .
- the instantaneous value of the DC supply voltage at the time of detection of the signal at the first input of the control device is determined.
- control device is also designed to form the difference between the voltage at the second input and the voltage at the first input.
- the difference complex divisions can be avoided.
- the ratio of the voltage at the second input to the ratio of the voltage at the first input can be evaluated, which however, requires a more powerful control device.
- the control device is preferably further configured to normalize the difference to the voltage at the first input or the voltage at the second input. Through this standardization is also achieved that the Anfor ⁇ requirements can be reduced to the computing power of the control device.
- the first and the second voltage divider are preferably dimensioned so that the difference is always positive.
- control device is preferably downloadedbil ⁇ det that the formation of said difference before the start of the activation of the preheating is carried out.
- control apparatus is adapted to the formation of the difference is a predetermined period of time, in particular 50 to 200 ms, preferably 100 ms, after the A ⁇ switch of the circuit arrangement to make. Is contributed play as during operation the discharge lamp ent ⁇ removed, the result is no additional latency because after switching the electronic ballast the STEU ⁇ ervoriques requires a certain time anyway until it is powered up.
- the control device is adapted to compare the normalized difference against egg ⁇ NEN specifiable threshold value and, if the normalized difference is greater than the predetermined threshold value, to make any output of a Vorformingsignals.
- the ⁇ se measure has the advantage that the predetermined threshold value for the consideration of component tolerances can be varied, for example in the context of Kalib ⁇ tion of the circuit arrangement.
- the first capacitor preferably comprises aistsfes ⁇ ACTION, which is between one tenth and one fifth of the between the first and the second terminal to be coupled maximum DC supply voltage. In practice it has been shown that this dimensioning represents an optimal compromise between space size and dielectric strength.
- the preheating device comprises a second Se ⁇ kundärwicklung, wherein the second secondary winding between the first and the second terminal for the hot filament of the discharge lamp is coupled. This allows a symmetrical preheating of both filaments of the discharge lamp.
- the preheating device can be realized by a separate heating transformer.
- the inductance may be the primary winding of the preheater. In this way, a circuit arrangement can be particularly screenedgüns ⁇ tig realized with minimal space requirements.
- FIGS. 1 a) to 1 d) show sections from known circuit arrangements according to the prior art
- FIG. 2 shows a schematic illustration of an exemplary embodiment of a circuit arrangement according to the invention.
- the embodiment shown in FIG. 2 of a circuit arrangement according to the invention has a first E1 and a second input terminal E2 for coupling to a DC supply voltage, which in particular represents the so-called intermediate circuit voltage U zw .
- a DC supply voltage which in particular represents the so-called intermediate circuit voltage U zw .
- the capacitor Cl is connected in parallel with a voltage divider comprising the ohmic resistors Rl and R2.
- the tap of the voltage divider Rl, R2, that is the voltage U R 2 is connected to an input E2 of a control device yC.
- an inverter is further coupled, which in the present case is implemented as a half-bridge circuit.
- the half-bridge circuit comprises a first Sl and a second electronic switch S2, which are serially coupled to form a first Halbmaschinenmit ⁇ telticians BM between the inputs El and E2.
- the control device is designed yC, the switches Sl, S2 of the inverter - to counteract ⁇ - in known manner.
- An inductance LI is coupled on the one hand to the first half-bridge center BM and on the other hand to the output terminal AI.
- the heating transformer TRI has a first SEK1 and a second secondary winding SEK2.
- the first secondary winding SEK1 is connected in series to a capacitor C s , wherein this series connection of the cal ⁇ th helix W c is connected in parallel.
- the second seconding ⁇ därwicklung SEK2 is the hot filament W on h ⁇ parallel ge.
- connections AI, A2 for the hot filament W h of the discharge lamp Fl and connections A3, A4 for the cold filament W c of the discharge lamp Fl are intended.
- the discharge lamp Fl more precisely between the terminal AI and the reference potential, a Zündkonden ⁇ capacitor C z is connected in parallel. This is designed to realize together with the inductance LI a resonant circuit, which enables the ignition of the discharge lamp Fl.
- the A4 terminal is coupled to the tap of apulstei ⁇ coupler, the high-resistance ohmic resistors R7 and R8 includes.
- the third and the fourth ohmic resistance is therefore high-impedance characterized that the re sulting ⁇ losses can be neglected.
- the voltage divider R3, R4 is a coupling capacitor C K i connected in parallel.
- the series scarf ⁇ processing of the first secondary winding and the condensate SEK1 parallel sator C s a resistor R5.
- This is preferably designed as an SMD component and dimensioned so that the capacitor C s must be designed for a clamping ⁇ tion strength, which is only one fifth to one tenth of the intermediate circuit voltage U zw .
- the capacitor C s is preferably designed for 63 V.
- the ohmic resistance R5 is preferably between 50 and 100 kQ, in a particularly preferred embodiment 82 kQ.
- the control device yC is designed, the signals U R 2 and U mess at least 100 ms after applying the intermediate Circuit voltage U zw to the inputs El, E2 of the circuit ⁇ arrangement to measure and evaluate.
- the capacitance of the capacitor C s is preferably Zvi ⁇ rule 0.1 yF and 10 yF, in a particularly preferred embodiment, in particular 1 yF.
- the control device yC is designed to form the difference between the voltages U R 2 and U mess and to normalize this difference to the voltage U R 2. It is formed wei ⁇ terhin to compare these normalized difference against a predetermined threshold value and, if the normalized difference is greater than the predetermined threshold value, to switch the switch SH to avoid preheating of the discharge lamp FL off.
- the predefinable threshold which is stored in the control device yC, can be varied during a calibration of the circuit arrangement in order to take into account component tolerances.
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA9110/2011A AT518402B1 (en) | 2010-05-31 | 2011-04-19 | Circuit arrangement for operating a discharge lamp |
CN201180026751.5A CN102948263B (en) | 2010-05-31 | 2011-04-19 | Circuit arrangement for operating discharge lamp |
FI20126324A FI124725B (en) | 2010-05-31 | 2012-12-18 | Connection arrangement for operating the discharge lamp |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010029511.6 | 2010-05-31 | ||
DE201010029511 DE102010029511B4 (en) | 2010-05-31 | 2010-05-31 | Circuit arrangement for operating a discharge lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011151107A1 true WO2011151107A1 (en) | 2011-12-08 |
Family
ID=44483895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/056277 WO2011151107A1 (en) | 2010-05-31 | 2011-04-19 | Circuit arrangement for operating a discharge lamp |
Country Status (5)
Country | Link |
---|---|
CN (1) | CN102948263B (en) |
AT (1) | AT518402B1 (en) |
DE (1) | DE102010029511B4 (en) |
FI (1) | FI124725B (en) |
WO (1) | WO2011151107A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5920155A (en) * | 1996-10-28 | 1999-07-06 | Matsushita Electric Works, Ltd. | Electronic ballast for discharge lamps |
EP1343359A2 (en) | 2002-03-05 | 2003-09-10 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | EOL-detection with integrated electrode interrogation |
DE102007016322A1 (en) * | 2007-04-04 | 2008-10-09 | Tridonicatco Gmbh & Co. Kg | Circuit for filament heating |
EP1993328A1 (en) * | 2007-05-11 | 2008-11-19 | Osram-Sylvania Inc. | Ballast with filament heating and ignition control |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5959408A (en) * | 1997-08-07 | 1999-09-28 | Magnetek, Inc. | Symmetry control circuit for pre-heating in electronic ballasts |
ATE245337T1 (en) * | 1999-05-25 | 2003-08-15 | Tridonicatco Gmbh & Co Kg | ELECTRONIC BALLAST FOR AT LEAST ONE LOW PRESSURE DISCHARGE LAMP |
JP4145795B2 (en) * | 2001-10-18 | 2008-09-03 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Short circuit ballast protection |
CA2729233A1 (en) * | 2008-06-26 | 2009-12-30 | Osram Sylvania Inc. | Ballast with lamp filament detection |
-
2010
- 2010-05-31 DE DE201010029511 patent/DE102010029511B4/en not_active Expired - Fee Related
-
2011
- 2011-04-19 CN CN201180026751.5A patent/CN102948263B/en not_active Expired - Fee Related
- 2011-04-19 AT ATA9110/2011A patent/AT518402B1/en not_active IP Right Cessation
- 2011-04-19 WO PCT/EP2011/056277 patent/WO2011151107A1/en active Application Filing
-
2012
- 2012-12-18 FI FI20126324A patent/FI124725B/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5920155A (en) * | 1996-10-28 | 1999-07-06 | Matsushita Electric Works, Ltd. | Electronic ballast for discharge lamps |
EP1343359A2 (en) | 2002-03-05 | 2003-09-10 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | EOL-detection with integrated electrode interrogation |
DE102007016322A1 (en) * | 2007-04-04 | 2008-10-09 | Tridonicatco Gmbh & Co. Kg | Circuit for filament heating |
EP1993328A1 (en) * | 2007-05-11 | 2008-11-19 | Osram-Sylvania Inc. | Ballast with filament heating and ignition control |
Also Published As
Publication number | Publication date |
---|---|
CN102948263B (en) | 2015-05-20 |
AT518402B1 (en) | 2017-10-15 |
FI124725B (en) | 2014-12-31 |
CN102948263A (en) | 2013-02-27 |
DE102010029511A1 (en) | 2011-12-01 |
FI20126324A (en) | 2012-12-18 |
DE102010029511B4 (en) | 2014-10-09 |
AT518402A5 (en) | 2017-10-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1103165B1 (en) | Electronic ballast for at least one low-pressure discharge lamp | |
DE60207131T2 (en) | Light source device | |
EP1836882B1 (en) | Electronic ballast | |
AT517946B1 (en) | PROCESS, OPERATING DEVICE AND LIGHTING SYSTEM | |
EP2252133A2 (en) | Switching assembly for operating a low pressure gas discharge lamp and method for same | |
WO1998053647A1 (en) | Ignition device for a discharge lamp and method for igniting a discharge lamp | |
DE102009019625B4 (en) | A method of determining a type of gas discharge lamp and electronic ballast for operating at least two different types of gas discharge lamps | |
EP1202612B1 (en) | Lighting system with improved preheating of discharge lamps | |
WO2011151107A1 (en) | Circuit arrangement for operating a discharge lamp | |
EP2274960B1 (en) | Method and circuit arrangement for operating at least one discharge lamp | |
EP1945008B1 (en) | Light sensor for a pre-switching device for operating a gas discharge light | |
DE10252836A1 (en) | Device for operating discharge lamps | |
EP1992203B1 (en) | Electronic ballast and method for operating an electrical lamp | |
EP2127499B1 (en) | Circuit configuration for controlling at least one fluorescent lamp | |
DE102009004851A1 (en) | Detector circuit and method for controlling a fluorescent lamp | |
DE10127135B4 (en) | Dimmable electronic ballast | |
DE602004009146T2 (en) | Arrangement in connection with a coupling device of a fluorescent lamp | |
EP1961277B1 (en) | Circuit arrangement and method for the operation of at least one first and a second lamp | |
DE3743422A1 (en) | Circuit arrangement for operating one or more low-pressure discharge lamps | |
DE19923083A1 (en) | Adapter for low pressure discharge lamps has bridge circuit outputs connected to primary coil winding and to first secondary coil, second output or negative pole to second secondary coil | |
DE19721149A1 (en) | Pulse ignition device for discharge lamp | |
AT12060U1 (en) | OPERATING DEVICE FOR GAS DISCHARGE LAMPS | |
EP2257134A1 (en) | Switching assembly for operating a series connection of at least two low pressure gas discharge lamps and method for same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180026751.5 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11717535 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 91102011 Country of ref document: AT Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20126324 Country of ref document: FI |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11717535 Country of ref document: EP Kind code of ref document: A1 |