EP1276355A2 - Circuit ballast pour determiner la puissance de préchauffage - Google Patents

Circuit ballast pour determiner la puissance de préchauffage Download PDF

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Publication number
EP1276355A2
EP1276355A2 EP02010871A EP02010871A EP1276355A2 EP 1276355 A2 EP1276355 A2 EP 1276355A2 EP 02010871 A EP02010871 A EP 02010871A EP 02010871 A EP02010871 A EP 02010871A EP 1276355 A2 EP1276355 A2 EP 1276355A2
Authority
EP
European Patent Office
Prior art keywords
preheating
circuit arrangement
power
circuit
fluorescent lamp
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.)
Granted
Application number
EP02010871A
Other languages
German (de)
English (en)
Other versions
EP1276355A3 (fr
EP1276355B1 (fr
Inventor
Bernhard Schemmel
Michael Dr. Weirich
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP1276355A2 publication Critical patent/EP1276355A2/fr
Publication of EP1276355A3 publication Critical patent/EP1276355A3/fr
Application granted granted Critical
Publication of EP1276355B1 publication Critical patent/EP1276355B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H05B41/36—Controlling
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/05—Starting and operating circuit for fluorescent lamp
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/07—Starting and control circuits for gas discharge lamp using transistors

Definitions

  • the present invention relates to a circuit arrangement for operation a fluorescent lamp comprising a half-bridge arrangement, the output signal can be fed to a load circuit, with a to the load circuit
  • Fluorescent lamp with filament electrodes can be connected, a preheater for preheating the filament electrodes of the fluorescent lamp and a power determining device for determining a preheating power value, which is a measure of the performance during preheating is implemented in the spiral electrodes. It also concerns a corresponding one Method of operating a fluorescent lamp.
  • the present invention deals with the problem that fluorescent lamps are produced which have different electrical data with the same dimensions or the same sockets. For example, one type is optimized for the electrical power converted and thus for the luminous flux emitted by the lamp, while another type is designed for high efficiency and thereby converts significantly less electrical power. Since the dimensions of corresponding lamp types in a given luminaire can be interchanged, control gear has been developed that automatically recognizes the type of lamp used and sets the correct operating parameters.
  • Such a circuit arrangement for the automatic detection of the lamp type used is known from the company Energy Savings; of which the essential part is shown in Fig. 1.
  • a half-bridge arrangement which comprises the two switches S1 and S2, is driven by an intermediate circuit voltage, which is usually a direct voltage of the order of 400 V.
  • the center of the half-bridge arrangement is connected to a lamp inductor L S , which serves to limit the current after the lamp LA has been ignited.
  • Two capacitors C K1 , C K2 serve as coupling capacitors.
  • a load circuit includes a resonance capacitor C R. They are used to generate the voltage required to ignite the lamp.
  • the lamp LA comprises two filament electrodes W1, W2, which are preheated as follows:
  • the lamp inductor L S forms a transformer together with an inductor L1 of a preheating circuit VK.
  • the preheating circuit VK can be supplied with energy via the lamp choke in this way.
  • a switch S3 is also arranged in the preheating circuit VK and is closed for the purpose of switching on the preheating. When switch S3 is closed and lamp LA is not ignited, a current is driven through preheating circuit VK by inductance L1. This flows through an inductor L2, which forms a transformer as the primary inductor with two further inductors L21, L22.
  • the inductor L2 As soon as current flows through the inductor L2, current also flows through the inductors L21 and L22, as a result of which a current flow is generated through the coil electrodes W1 and W2, which results in the coil electrodes W1, W2 being heated, ie preheating them.
  • the magnitude of the currents I 21 , I 22 depends on the impedance of the spiral electrodes W1, W2.
  • the currents I 21 , I 22 are in a fixed ratio to the current I 1 of the preheating circuit VK. By measuring the voltage drop U R1 across a measuring resistor R 1 , the current I 1 can be determined and thus it can be determined which type of lamp is used in the circuit arrangement.
  • the voltage U R1 dropping across the resistor R 1 is fed to a processor which adjusts the operating parameters in accordance with the determined lamp type.
  • the lamp is increased so much by driving the switches S1, S2 of the half-bridge arrangement with a suitable frequency that the voltage applied to the lamp as a result of the resonance circuit formed by the lamp inductor L S and the resonance capacitor C R is such that it becomes Ignition of the lamp LA comes.
  • the switches S1, S2 of the half-bridge arrangement are operated at a frequency which corresponds to the normal operation of the lamp.
  • the circuit arrangement shown in FIG. 1 uses an actively switched preheating circuit VK.
  • the object of the present invention is a circuit arrangement of the type mentioned in such a way that an automatic Detection of the lamp type used in the circuit arrangement also for circuit arrangements with a preheating circuit that is not activated is made possible. Furthermore, a corresponding method for Operating a fluorescent lamp can be provided.
  • the procedural object is achieved by a method in which first a fluorescent lamp with the supply of energy from a Half-bridge arrangement is preheated in a load circuit, the Fluorescent lamp, which has filament electrodes, connected to a load circuit is.
  • a preheating power value is determined, which is a measure of represents the power flowing into the load circuit during preheating.
  • one of at least selected two processes for operating the circuit arrangement is performed.
  • the solutions according to the invention are based on the knowledge that at Circuit arrangements with the preheating circuit not activated which are in the Load circuit flowing power is correlated with that in the circuit arrangement used lamp type as long as the lamp is not ignited.
  • the shares implemented in the load circuit can be calculated, since the values of the components are known and constant. In this respect it hangs in the power flowing in the load circuit essentially depends on the impedance of the Spiral electrodes, so that in the conclusion due to the load circuit flowing power can be concluded which type of lamp is used has been. Depending on the type of lamp found, you can then the appropriate operating parameters are set.
  • the preheating in circuit arrangements according to the invention except with preheating inductors also with preheating resistors or by forming a Resonance circuit.
  • the range of possibilities of preheating significantly expanded.
  • the lamp is preheated, ignited and operated normally one and the same circuit arrangement, only by varying the frequency, with which the switches of the half-bridge arrangement are opened and closed become.
  • the power determination device the current flowing in a half-bridge branch is evaluated. For example, using a measuring resistor or an inductor this allows the load circuit to be connected in a particularly simple manner determine flowing performance.
  • the circuit arrangement preferably further comprises a sequence control, which depending on the preheating power value one of at least selects two processes for operating the circuit arrangement.
  • the at least two processes for operating the circuit arrangement can Operating modes of the circuit arrangement for preheating and / or ignition and / or normal operation of the fluorescent lamp or measures include defective or unused fluorescent lamp.
  • a particularly preferred embodiment of the circuit arrangement according to the invention further comprises a control or regulating device, with the power determination device also in normal operation the fluorescent lamp the power flowing into the load circuit can be determined, and the control or regulating device is designed depending from this determined power parameters for normal operation of the circuit arrangement to change.
  • a control or regulation in the load circuit flowing power in normal operation is necessary because the fluorescent lamp operated at different operating points depending on the temperature will, i.e. that especially shortly after turning on the working point has different current and voltage values than at operating temperature.
  • the lamp is not a constant load Existing service entry can also be used for a suitable design Solution to the problem according to the invention can be used.
  • the control or control device can be designed, the determined preheating power value against a setpoint to compare the parameters for the Change normal operation depending on the result of this comparison.
  • the sequence control particularly preferably comprises a bistable stage, in order to One of two operating modes depending on the determined preheating power value to select the circuit arrangement.
  • This variant is special Suitable for circuit arrangements in which only two types of lamps can be used, which correspond in terms of their dimensions. In this In this case, this simple solution is sufficient to automatically insert the one used Recognize the lamp type and set the associated operating parameters.
  • FIG. 2 shows a circuit arrangement according to the invention, elements and sizes which correspond to those of FIG. 1 being designated with the same reference symbols.
  • the circuit arrangement shown in FIG. 2 also comprises a half-bridge arrangement with two switches S1, S2, which are fed by a voltage Uz.
  • the center point of the half-bridge arrangement is connected to a lamp inductor Ls, the other end of which is connected to a first filament electrode W1 of the lamp LA.
  • the lamp choke Ls forms a resonance circuit for igniting the lamp LA with a resonance capacitor C R , which is connected between the coil electrode W1 and a second coil electrode W2.
  • Two capacitors C K1 , C K2 in turn serve as coupling capacitors.
  • the power flowing into the load circuit LK is correlated with a current I RM which flows through a measuring resistor R M arranged in a half-bridge branch of the half-bridge arrangement.
  • the voltage U RM dropping across the measuring resistor R M is preferably evaluated to determine the power flowing into the load circuit LK.
  • FIG. 3 shows a block diagram of an operating device on which a preferred embodiment of a circuit arrangement according to the invention is shown.
  • the operating device shown in FIG. 3 is used in particular for setting suitable operating parameters of a first and a second lamp type.
  • a power P1 is assigned to the first lamp type during preheating, while a power P2 is assigned to the second lamp type during preheating.
  • the operating device shown in FIG. 3 has an input E for connecting a mains voltage U N to a component 10.
  • Component 10 comprises an RF filter, a rectifier and a circuit for limiting the mains current harmonics.
  • the output signal of component 10 is typically a stabilized DC voltage of approximately 400 V, the so-called intermediate circuit voltage, which feeds a half-bridge arrangement 12.
  • the intermediate circuit voltage U Z is converted by the half-bridge arrangement 12 into a square-wave voltage signal U R , the frequency of which can be determined by an oscillator 14.
  • the square-wave voltage U R is passed to a load circuit 16, which comprises a resonance circuit for igniting a lamp LA connected to it.
  • the load circuit 16 also serves to limit the lamp current during normal operation of the lamp LA.
  • the oscillator 14 is controlled by a sequence control 18, by means of which the frequencies and / or duty cycles of the square-wave voltage U R required for preheating, ignition and normal operation of the lamp LA can be set.
  • Sequence control 18, oscillator 14 and half-bridge arrangement 12 are not necessarily separate circuits, but can form a unit like in a freely oscillating inverter.
  • the power P ist flowing into the load circuit can be determined from the voltage U RM and with knowledge of the components of the load circuit 16.
  • the power P ist is compared by a threshold value switch 22 with a threshold value P threshold , which is selected such that the power P ist when the first lamp type is connected is certainly less than P threshold during the entire preheating phase , while the connection of a second lamp type leads to that the threshold value P threshold is exceeded at least temporarily during the preheating.
  • the output of the threshold value switch remains in the L state, otherwise the output of the threshold value switch 22 at least temporarily changes to the H state.
  • the sequence controller 18 generates a signal only during the preheating phase, as a result of which the electrical switch 24 is closed.
  • the output signal of the threshold switch 22 is passed to a bistable stage 26 and accepted.
  • the bistable stage 26 provides a signal at its output in the idle state which corresponds to the state L of the threshold switch 22. If this output signal is provided at the output of the bistable stage 26, a switch 28 switches to the position shown in FIG. 3, so that a control variable which corresponds to a power P1 is fed to a control amplifier 30.
  • the power P is supplied to the control amplifier 30 as the variable to be controlled.
  • the threshold switch 22 has a signal at its output provides that corresponds to the H state, causes the bistable stage 26, that the switch 28 switches over and transmits a signal to the control amplifier 30, that is correlated with the power P2.
  • a brief appearance of the H state at the output of the threshold switch 22 is sufficient to to put the switch 28 in the P2 position. Stuck in state P2 the switch 28 until the operating device is switched off.
  • the lamp LA during of the preheating power regulated.
  • the lamp LA is supplied during preheating Power controlled according to a target power.
  • the sequence controller 18 provides suitable signals for operating the lamp not only during the preheating phase, but also for ignition and in normal operation, in particular by varying the amplitude, frequency and duty cycle of the voltage U R.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
EP02010871A 2001-07-10 2002-05-15 Circuit ballast pour determiner la puissance de préchauffage Expired - Lifetime EP1276355B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10133515 2001-07-10
DE10133515A DE10133515A1 (de) 2001-07-10 2001-07-10 Schaltungsanordnung zum Betreiben einer Leuchtstofflampe

Publications (3)

Publication Number Publication Date
EP1276355A2 true EP1276355A2 (fr) 2003-01-15
EP1276355A3 EP1276355A3 (fr) 2003-02-12
EP1276355B1 EP1276355B1 (fr) 2007-04-18

Family

ID=7691295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02010871A Expired - Lifetime EP1276355B1 (fr) 2001-07-10 2002-05-15 Circuit ballast pour determiner la puissance de préchauffage

Country Status (4)

Country Link
US (1) US6657403B2 (fr)
EP (1) EP1276355B1 (fr)
CA (1) CA2392978A1 (fr)
DE (2) DE10133515A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7592753B2 (en) * 1999-06-21 2009-09-22 Access Business Group International Llc Inductively-powered gas discharge lamp circuit
DE202005013754U1 (de) * 2005-08-31 2005-11-17 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Vorschaltgerät für eine Entladungslampe mit adaptiver Vorheizung
US7821208B2 (en) * 2007-01-08 2010-10-26 Access Business Group International Llc Inductively-powered gas discharge lamp circuit
DE102008012454A1 (de) * 2008-03-04 2009-09-10 Tridonicatco Gmbh & Co. Kg Verfahren zum Bestimmen von Betriebsparametern einer mit einem elektronischen Vorschaltgerät zu betreibenden Gasentladungslampe sowie ein entsprechendes Vorschaltgerät
DE102008022198A1 (de) * 2008-03-04 2009-09-10 Tridonicatco Gmbh & Co. Kg Typerkennung einer mit einem elektronischen Vorschaltgerät zu betreibenden Gasentladungslampe
DE102008012453A1 (de) * 2008-03-04 2009-09-10 Tridonicatco Gmbh & Co. Kg Verfahren zum Prüfen, ob mindestens zwei mit einem elektronischen Vorschaltgerät zu betreibende Gasentladungslampen vom gleichen Typ sind
DE102008031409A1 (de) * 2008-07-02 2010-01-07 Tridonicatco Gmbh & Co. Kg Erkennung des Typs einer an einem Betriebsgerät angeschlossenen Gasentladungslampe
DE102009019625B4 (de) * 2009-04-30 2014-05-15 Osram Gmbh Verfahren zum Ermitteln eines Typs einer Gasentladungslampe und elektronisches Vorschaltgerät zum Betreiben von mindestens zwei unterschiedlichen Typen von Gasentladungslampen

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3608362A1 (de) * 1985-05-14 1987-09-17 Trilux Lenze Gmbh & Co Kg Vorschaltgeraet fuer entladungslampen
US4954749A (en) * 1988-11-15 1990-09-04 North American Philips Corporation Fluorescent lamp electrode disconnect method and arrangement for practicing the method
JPH0766864B2 (ja) * 1989-07-28 1995-07-19 東芝ライテック株式会社 放電灯点灯装置
US5175470A (en) * 1990-12-19 1992-12-29 North American Philips Corporation Fluorescent lamp electrode disconnect arrangement
DE4119775A1 (de) * 1991-06-15 1992-12-17 Vossloh Schwabe Gmbh Vorschaltgeraet mit gesteuerter heizzeit
US5600211A (en) * 1994-09-16 1997-02-04 Tridonic Bauelemente Gmbh Electronic ballast for gas discharge lamps
DE19546588A1 (de) * 1995-12-13 1997-06-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren und Schaltungsanordnung zum Betrieb einer Entladungslampe
US6160361A (en) * 1998-07-29 2000-12-12 Philips Electronics North America Corporation For improvements in a lamp type recognition scheme
US6169375B1 (en) * 1998-10-16 2001-01-02 Electro-Mag International, Inc. Lamp adaptable ballast circuit
DE19850441A1 (de) * 1998-10-27 2000-05-11 Trilux Lenze Gmbh & Co Kg Verfahren und Vorschaltgerät zum Betrieb einer mit einer Leuchtstofflampe versehenen Leuchte
US6359387B1 (en) * 2000-08-31 2002-03-19 Philips Electronics North America Corporation Gas-discharge lamp type recognition based on built-in lamp electrical properties

Also Published As

Publication number Publication date
DE50209956D1 (de) 2007-05-31
CA2392978A1 (fr) 2003-01-10
EP1276355A3 (fr) 2003-02-12
US20030011328A1 (en) 2003-01-16
US6657403B2 (en) 2003-12-02
DE10133515A1 (de) 2003-01-30
EP1276355B1 (fr) 2007-04-18

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