EP2529599A2 - Appareil pour faire fonctionner des lampes à décharge de gaz - Google Patents

Appareil pour faire fonctionner des lampes à décharge de gaz

Info

Publication number
EP2529599A2
EP2529599A2 EP11705800A EP11705800A EP2529599A2 EP 2529599 A2 EP2529599 A2 EP 2529599A2 EP 11705800 A EP11705800 A EP 11705800A EP 11705800 A EP11705800 A EP 11705800A EP 2529599 A2 EP2529599 A2 EP 2529599A2
Authority
EP
European Patent Office
Prior art keywords
operating device
monitoring
heating circuit
switch
monitoring means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11705800A
Other languages
German (de)
English (en)
Inventor
Günter MARENT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tridonic GmbH and Co KG
Original Assignee
Tridonic GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tridonic GmbH and Co KG filed Critical Tridonic GmbH and Co KG
Publication of EP2529599A2 publication Critical patent/EP2529599A2/fr
Withdrawn legal-status Critical Current

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
    • 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
    • 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

Definitions

  • the invention relates to an operating device for operating gas discharge lamps according to the preamble of
  • Patent claim 1 and a method for operating gas discharge lamps according to the preamble of
  • Such control devices for gas discharge lamps are used for lighting and used in lighting systems to protect the gas discharge lamps gently
  • the gas discharge lamps are driven by operating devices and their coils heated.
  • Control commands can be specified in particular brightness values to different lighting conditions
  • DE 102004009995 A1 shows such a heating circuit, here is a switch for controlling the heater
  • Such heating circuits need to ensure correct coil heating several monitors that are each detected separately from a control circuit. Presentation of the invention
  • Gas discharge lamps in particular fluorescent lamps, has an inverter which is supplied from a DC voltage to which an output circuit having
  • At least one heating circuit is connected for operating at least one gas discharge lamp.
  • Heating circuit has a heating transformer with at least one primary winding and at least one secondary winding, wherein the secondary winding is connected in series with at least one filament of the gas discharge lamp, wherein the primary winding with a first
  • Monitoring means as well as at least one
  • Secondary winding is connected to a second monitoring means, and wherein the two monitoring means are coupled together.
  • the invention also relates to a
  • the invention also relates to a method for operating a gas discharge lamp, in particular
  • Fluorescent lamp by means of a heating circuit and a control circuit for controlling the heating circuit, wherein the heating circuit at least two different
  • control circuit has at least one high-frequency clocked switch in
  • Fig. 1 shows a control device according to the prior art
  • Fig. 2a shows a first variant of a heating circuit according to the invention
  • FIG. 2b shows a second variant of a heating circuit according to the invention.
  • FIG. 3 shows a third variant of a heating circuit according to the invention The invention is based on a
  • Fig. 2a shows the part of a heating circuit of a
  • Operating device (1) for gas discharge lamps, in particular fluorescent lamps, comprising an inverter, which is supplied from a DC voltage, to the one
  • Output circuit comprising at least one heating circuit for operating at least one gas discharge lamp
  • the heating circuit has a
  • Heating transformer with at least one primary winding
  • the secondary winding (Lsekl, Lsek2) is connected in series to at least one filament of the gas discharge lamp, and the primary winding (Lprim) is provided with a first monitoring means (R2) as well as at least one secondary winding (Lsekl, Lsek2) with a second monitoring means (R3, R4 ) connected.
  • R2 first monitoring means
  • R3 second monitoring means
  • R4 additionally have further elements (R1, not shown in FIG. 2a as a coupled measurement but separate detection).
  • Control circuit (IC) may be present, which monitors the heating circuit based on the two monitoring means (R2, Rl, R3, R4).
  • the control circuit (IC) can be made up of an integrated circuit, consisting of several, with each other
  • control circuit can thus a single integrated circuits or even a combination of integrated circuits and discrete circuits.
  • the control circuit can thus a single
  • Surveillance signal (SH) tap which includes the signals of both monitoring means (R2, Rl, R3, R4).
  • Control circuit (IC) for monitoring the heating circuit required or at least a reduction of the terminals of the control circuit (IC) for monitoring the
  • the control circuit can control at least one high-frequency clocked switch (Sw) in the output circuit (preferably in the inverter or heating circuit) and the
  • Monitoring of the heating circuit can be carried out depending on the switching state of this high-frequency clocked switch (Sw). Monitoring of the heating circuit can take place during the switch-on phase and at least monitoring of the heating circuit can take place during the switch-off phase of the high-frequency clocked switch (Sw).
  • the first monitoring means (R2) can be used to monitor the current through the primary winding (Lprim).
  • the first monitoring means (R2) can be replaced by an ohmic
  • Heating transformer can be formed.
  • the second monitoring means (R1, R3, R4) can be used for
  • the second monitoring means can be formed, for example, by an ohmic resistance or else an ohmic or capacitive voltage divider.
  • the monitoring means (R2, R1, R3, R4) can be read out in such a way that monitoring, in particular measurement during a first time phase, takes place, and further monitoring, in particular a further monitoring
  • the heating circuit can be a high-frequency clocked
  • Inverter is arranged.
  • the high frequency clocked switch (Sw) is arranged in parallel or in series with the primary winding (Lprim).
  • the heating circuit can be fed by the bus voltage of the operating device and by the
  • Heating energy can be controlled by the duty cycle and / or the frequency of the high frequency clocked switch. This variant is shown in FIG. 2a.
  • the heating circuit is coupled to the inverter or the output circuit and is controlled by the heating energy by the duty cycle and / or the frequency of the high-frequency clocked switch (Sw). This variant is shown in Fig. 2b
  • the monitoring of the voltage and / or the current through the filament can take place during the switch-off time of the high-frequency clocked switch (Sw).
  • the monitoring of the current through the coil can be done for example by an ohmic resistance Rl (as a so-called current shunt).
  • the monitoring of the voltage across the coil can be done for example by an ohmic resistor divider (R3, R4).
  • the two monitoring means (R2, Rl, R3, R4) can be coupled to one another via a coupling element (Rk, Rkl and Rk2, respectively).
  • the coupling member can be formed by a diode or a resistor or by other or even several components. At least one monitoring can be a measurement.
  • At least one monitor can do one
  • Threshold off the high-frequency clocked switch (Sw) can be opened.
  • a spiral break or removal of the gas discharge lamp can be detected during operation and then the inverter and possibly the entire operating device off or in a
  • the error mode can also be a mode of operation with
  • the adapted timing of the heating circuit can by a clocking of the
  • Half bridge (Sl, S2) take place. This can be done, for example, in the circuits of Fig. 2b or Fig. 3. In this case, for example, the two switches Sl and S2 can be briefly alternately driven or only the upper switch Sl can be clocked. At least one of the measurements can be used to detect the
  • Coil resistance and thus be used for lamp type detection.
  • the operating device in particular the control circuit IC can pass through several operating states (preheat, ignition, operation, error).
  • the common ferrite core arranged and magnetically coupled.
  • the common ferrite core can be at least two
  • the common ferrite core may have the shape of a U-core.
  • the common ferrite core may be in the form of an E-core.
  • the common ferrite core may have an air gap.
  • gas discharge lamps If several gas discharge lamps are connected, they can be connected in series or parallel connection. It can be the number of secondary windings (Lsekl, Lsek2) at least the number of to be connected
  • FIG. 3 shows a further variant of an operating device according to the invention.
  • the essential difference to the operating device 1 of Figure 2 is that the heating circuit is coupled to the output circuit and the high-frequency clocked switch (Sl or S2) is arranged in the inverter.
  • the heating circuit is coupled to the output circuit and the high-frequency clocked switch (Sl or S2) is arranged in the inverter.
  • the heating circuit itself is therefore passive and not directly controllable, but only via the control of the at least one high-frequency clocked switch (Sl or S2), in the inverter (i.e., the half-bridge)
  • the monitoring of the heating circuit can take place by means of the monitoring means (R2, R1) as a function of the switching state of one of the two high-frequency clocked switches of the half-bridge (S1 or S2). It can be done, for example, during the activation of the upper half-bridge switch (Sl) the monitoring means of the first monitoring means (R2), in particular can be made the 'monitoring the current through the primary winding (Lprim).
  • the monitoring means R2, R1
  • the monitoring means of the first monitoring means in particular can be made the 'monitoring the current through the primary winding (Lprim).
  • Half-bridge switch (Sl) monitoring can take place by means of the second monitoring means (Rl).
  • the monitoring of the voltage and / or the current through the coil during the off time this
  • Inductance which is arranged in the heating circuit can be used.
  • the capacitor may be arranged in series or parallel to the primary winding (Lprim) or the secondary winding (Lsekl, Lsek2).
  • Fluorescent lamp by means of a heating circuit and a control circuit (IC) for controlling the heating circuit allows, wherein the heating circuit at least two
  • the control circuit controls at least one
  • the monitoring by means of the first monitoring means (R2) takes place during the switch-on of the high-frequency clocked switch (Sw, Sl, S2), in particular, the monitoring of the current through the primary winding (Lprim) can take place.
  • the monitoring by means of the second monitoring means (Rl, R3, R4) can take place during the turn-off time of the high-frequency clocked switch (Sw, Sl, S2).
  • the first monitoring means R2
  • the monitoring of the current through the primary winding (Lprim) can take place.
  • the monitoring by means of the second monitoring means (Rl, R3, R4) can take place during the turn-off time of the high-frequency clocked switch (Sw, Sl, S2).

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

La présente invention concerne un appareil (1) pour faire fonctionner des lampes à décharge de gaz, notamment des lampes fluorescentes, comprenant un onduleur qui est alimenté à partir d'une tension continue et auquel est connecté un circuit de sortie présentant au moins un circuit de chauffe destiné à faire fonctionner au moins une lampe à décharge de gaz. Selon l'invention, le circuit de chauffe comprend un transformateur de chauffe qui présente au moins un enroulement primaire (Lprim) et au moins un enroulement secondaire (Lsek1, Lsek2), l'enroulement secondaire (Lsek1, Lsek2) étant connecté en série avec au moins un filament de la lampe à décharge de gaz, et l'enroulement primaire (Lprim) étant relié à un premier moyen de surveillance (R2) alors qu'au moins un enroulement secondaire (Lsek1, Lsek2) est relié à un second moyen de surveillance (R1, R3, R4). L'invention se caractérise en ce que les deux moyens de surveillance (R2, R1, R3, R4) sont couplés entre eux.
EP11705800A 2010-01-28 2011-01-28 Appareil pour faire fonctionner des lampes à décharge de gaz Withdrawn EP2529599A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0005210U AT12060U1 (de) 2010-01-28 2010-01-28 Betriebsgerät für gasentladungslampen
PCT/AT2011/000051 WO2011091462A2 (fr) 2010-01-28 2011-01-28 Appareil pour faire fonctionner des lampes à décharge de gaz

Publications (1)

Publication Number Publication Date
EP2529599A2 true EP2529599A2 (fr) 2012-12-05

Family

ID=44257271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11705800A Withdrawn EP2529599A2 (fr) 2010-01-28 2011-01-28 Appareil pour faire fonctionner des lampes à décharge de gaz

Country Status (4)

Country Link
EP (1) EP2529599A2 (fr)
AT (1) AT12060U1 (fr)
DE (1) DE112011100354A5 (fr)
WO (1) WO2011091462A2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19708792A1 (de) * 1997-03-04 1998-09-10 Tridonic Bauelemente Verfahren und Vorrichtung zum Erfassen des in einer Gasentladungslampe auftretenden Gleichrichteffekts
US5973455A (en) * 1998-05-15 1999-10-26 Energy Savings, Inc. Electronic ballast with filament cut-out
BR0007013A (pt) * 1999-05-25 2001-07-03 Tridonic Bauelemente Reator eletrônico para lâmpadas de descarga de baixa pressão
DE102004009995A1 (de) 2004-03-01 2005-09-22 Tridonicatco Gmbh & Co. Kg Schaltungsanordnung und Verfahren zum Betreiben einer Gasentladungslampe mit einem Heiztransformator
DE102005018761A1 (de) * 2005-04-22 2006-10-26 Tridonicatco Gmbh & Co. Kg Intelligente Flyback-Heizung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011091462A2 *

Also Published As

Publication number Publication date
DE112011100354A5 (de) 2012-11-29
WO2011091462A3 (fr) 2011-11-03
AT12060U1 (de) 2011-09-15
WO2011091462A2 (fr) 2011-08-04

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