WO2011141363A1 - Procédé et dispositif pour faire fonctionner une lampe à décharge - Google Patents

Procédé et dispositif pour faire fonctionner une lampe à décharge Download PDF

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Publication number
WO2011141363A1
WO2011141363A1 PCT/EP2011/057275 EP2011057275W WO2011141363A1 WO 2011141363 A1 WO2011141363 A1 WO 2011141363A1 EP 2011057275 W EP2011057275 W EP 2011057275W WO 2011141363 A1 WO2011141363 A1 WO 2011141363A1
Authority
WO
WIPO (PCT)
Prior art keywords
discharge lamp
current
voltage
commutation pulse
lamp
Prior art date
Application number
PCT/EP2011/057275
Other languages
German (de)
English (en)
Inventor
Michael Bönigk
Original Assignee
Osram Gesellschaft mit beschränkter Haftung
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 Osram Gesellschaft mit beschränkter Haftung filed Critical Osram Gesellschaft mit beschränkter Haftung
Publication of WO2011141363A1 publication Critical patent/WO2011141363A1/fr

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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
    • H05B41/26—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
    • H05B41/288—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 without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium 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
    • H05B41/288—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 without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2928—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions

Definitions

  • the invention relates to a method and a device for operating a discharge lamp. Furthermore, accordingly, a control gear and a lamp
  • DE 10 2004 020 397 A1 shows a method for operating a high-pressure discharge lamp with a temporally periodically running, bipolar supply current and a
  • Discharge lamp in particular a mercury-free
  • Commutation pulse can before and after the zero crossing or just immediately after the zero crossing of the
  • Commutation pulse current is both the increase of DC link voltage, ie a voltage across the lamp, immediately during or after the zero crossing (reaching a renewed firing tip by a rapid change in voltage) as well as the provision of an excessive current or an overload immediately after one
  • the electrode is heated up quickly by an excessively high current or overload
  • thermo emissivity of the electrode (thermal emissivity of the electrode).
  • the increased electrical power converted during the commutation pulse is provided by a supply circuit or a converter via an intermediate circuit with a screening capacitor and a bridge circuit of the lamp. Does the converter accept the
  • Capacitors means the commutation pulse an increased AC load and thus requires the use of expensive and large capacitors.
  • Commutation pulses to increased heat throughout the system corresponds to the square of the flowing current multiplied by the resistance), but especially in the active devices (e.g.
  • Commutation is also increasing electromagnetic radiation, which must be limited accordingly (eg by means of filters, shielding, etc.).
  • Circuit of the operating device must be permanently designed for this high current.
  • Commutation pulse current decreases.
  • the screen or support capacitors for the maximum commutation pulse current and the effective AC load if the lamp is new and has only a low impedance
  • Components e.g., transistors of the bridge circuit
  • the object of the invention is to avoid the above-mentioned disadvantages and in particular to provide a possibility of an efficient
  • Commutation pulse current is operated, wherein the amplitude of the commutation pulse current is controlled.
  • the commutation pulse current is a pulse signal which can be superimposed on the commutation signal for operation of the discharge lamp.
  • the commutation pulse by means of the commutation pulse, an increase of the intermediate circuit voltage as well as a power increase on the discharge lamp.
  • the adaptation of the commutation pulse current has the
  • the impedance of the discharge lamp increases with increasing age or with increasing duration of use.
  • the amplitude-controlled or increased commutation pulse current it is possible to apply a signal to e.g. flicker of the discharge lamp perceivable by the human eye
  • Commutation pulse current is then used when it is needed. This allows the components of the
  • Discharge lamp must not be designed for continuous operation of a maximum commutation pulse current. Of the maximum commutation pulse current occurs only at the end of the life of the discharge lamp for a (based on the total usable duration of the discharge lamp)
  • Commutation pulse current is regulated depending on an impedance and / or a burning voltage of the discharge lamp.
  • the amplitude of the commutation pulse current is adjusted so that a flicker of the discharge lamp is not perceptible by the human eye.
  • predetermined firing voltage of the commutation pulse current is turned off.
  • Commutation pulse current is / will be evaluated.
  • the current through the discharge lamp may be a partial current or a substantially proportional proportion of the current through the discharge lamp.
  • the current is suitable for detecting a change in the current through the discharge lamp.
  • the voltage on the discharge lamp may be a (proportional) voltage or a partial voltage or a substantially proportional portion of the voltage on the discharge lamp.
  • the voltage is suitable for changing the burning voltage of the
  • the current through the discharge lamp and / or the voltage at the discharge lamp is / are determined by means of an integrating regulator (I regulator), in particular one with a voltage regulator
  • Proportional component evaluated for setting the commutation pulse current.
  • the (P) I controller can be a unit for
  • Control pulse width modulation which affects the brightness of the gas discharge lamp.
  • the processing unit may be e.g. to act a microcontroller or a microprocessor.
  • microprocessor a the microprocessor a
  • Hardware and / or software may be.
  • the microprocessor may be implemented as FPGA or ASIC.
  • An embodiment is that the current increase or the power increase on the basis of the processing unit by means of a bridge circuit of the discharge lamp
  • the bridge circuit may be e.g. one
  • the discharge lamp is a gas discharge lamp, a high-pressure discharge lamp, in particular a mercury-free discharge lamp or a xenon lamp.
  • a device for controlling a discharge lamp comprising a processing unit, which is set up such that the method described here is feasible. It should be noted that it is in the
  • Processing unit e.g. can be a microcontroller or a microprocessor.
  • the processing unit may in particular comprise an I-controller or a PI controller.
  • a PI controller On the basis of the processing unit, a
  • Processing unit to be driven a unit for pulse width modulation of the discharge lamp.
  • the processing unit detects as inputs a current (proportion) which flows through the discharge lamp or a voltage which (at least proportionally) at the
  • the processing unit may be a Adjusting current increase or an increase in power based on the input variables, and thus, depending on the detected voltage and / or the detected current change the amplitude of the Kommut istsimpulsstroms.
  • an operating device also referred to as electronic
  • Ballast comprising the one described herein
  • FIG. 1 shows a schematic circuit diagram for operating a
  • Discharge lamp in particular one
  • the discharge lamp is e.g. one
  • the discharge lamp has a higher impedance and thus has a higher operating voltage than a new discharge lamp.
  • Firing voltage follows a lower current at the same power, which causes a reduced electrode temperature, which in turn impedes thermal emission of the electrodes.
  • An operation with commutation (im) pulse (the
  • Control signal (commutation signal or
  • Commutation current) of the discharge lamp can be superimposed) allows a stabilizing behavior of the discharge lamp against flicker phenomena.
  • Firing voltage ie, for example, discharge lamps that are still new
  • Kommutleitersspulstrom or can be completely dispensed with a sufficiently rapid change (du / dt) of the commutating voltage to a separate Kommutleitersimpuls (Ström).
  • Commutation pulse current is set. This low commutation pulse current is for one
  • Commutation pulse current can be increased. This has the advantage that no high
  • Commutation pulse current is provided when the discharge lamp does not need this. Furthermore, it is advantageous that the temporal
  • Changing the commutating voltage (du / dt) or the commutating current (di / dt) is not unnecessarily increased and thus reduces or prevents EMC interference.
  • the commutation pulse current only loads at the end of the
  • a property or a state of the discharge lamp can be determined via a lamp voltage or a lamp current or by a combination of these parameters. For example, an elevation (i.e.
  • Influencing the amplitude of the commutation pulse current or the commutation pulse power) for a Mercury-free discharge lamp can be determined as follows:
  • the elevation may be e.g. one
  • the said factor can be chosen such that, for the highest possible superelevation at maximum lamp voltage Umax or at minimum lamp current Imin, the following applies at least:
  • the factor in regulation by means of power setpoint input can be chosen so that for the largest possible
  • Lamp impedance (during commutation) can vary and thus the voltage U and the current I do not run parallel.
  • the operating device may have an integrating controller (I controller) or a PI controller (ie an I controller with a proportional component).
  • I controller integrating controller
  • PI controller ie an I controller with a proportional component.
  • the controlled system of the I-controller (or the PI-controller) evaluates a voltage of the discharge lamp, the power is set via a current setpoint.
  • Fig. 1 shows a schematic circuit diagram for operating a discharge lamp 118, in particular one
  • High-pressure discharge lamp with an amplitude-controlled commutation pulse signal.
  • a supply voltage 120 is connected on the input side to a filter 101.
  • An output of the filter 101 is over a primary side of a transformer 102 is connected to the drain terminal of an n-channel MOSFET 103 and the other output of the filter 101 is connected to the source terminal of the MOSFET 103.
  • the secondary side of the transformer 102 is connected on the one hand to the anode of a diode 104 and on the other hand to a node 122.
  • the cathode of the diode 104 is connected to a node 121. Between the node 121 and the
  • the node 121 is connected to a node 123 via a resistor 111, and the node 122 is connected to a node 124 via a resistor 110.
  • the node 123 is connected to the node 124 via a resistor 112.
  • the node 121 is connected to the drain of an n-channel MOSFET 113 and to the drain of an n-channel
  • Mosfets 115 connected.
  • the node 124 is connected to the source of an n-channel MOSFET 114 and to the source of an n-channel MOSFET 116.
  • Mosfets 114 are connected to a node 125.
  • Source of MOSFET 115 and the drain of MOSFET 116 are connected to a node 126.
  • a series circuit comprising an ignition element 117 and the discharge lamp 118 is arranged.
  • the circuit further comprises a microcontroller 108 with a PI controller 106 and an implementation of the
  • Equation (1) or (3) indicated as unit 107.
  • the node 123 provides as input to the PI controller 106, a current through the discharge lamp and the node 124 provides as input to the PI controller 106 and for the unit 107, a voltage across the discharge lamp. Based on this voltage ("actual" value in equation (3)), the unit 107 determines the current increase according to
  • the PI controller 106 controls a unit for
  • Pulse width modulation 105 accordingly, which is connected on the one hand to the gate terminal of the Mosfets 103 and on the other hand to its source terminal. Furthermore, the microcontroller 108 is provided with a

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

L'invention concerne un procédé permettant de faire fonctionner une lampe à décharge, selon lequel on fait fonctionner la lampe à décharge avec un courant pulsé de commutation, l'amplitude du courant pulsé de commutation étant régulée. L'invention concerne en outre un dispositif correspondant, un appareil permettant de faire fonctionner la lampe et muni d'un tel dispositif ainsi qu'une lampe comportant le dispositif ou l'appareil permettant son fonctionnement.
PCT/EP2011/057275 2010-05-11 2011-05-06 Procédé et dispositif pour faire fonctionner une lampe à décharge WO2011141363A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010028838 DE102010028838A1 (de) 2010-05-11 2010-05-11 Verfahren und Vorrichtung zum Betreiben einer Entladungslampe
DE102010028838.1 2010-05-11

Publications (1)

Publication Number Publication Date
WO2011141363A1 true WO2011141363A1 (fr) 2011-11-17

Family

ID=44276351

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/057275 WO2011141363A1 (fr) 2010-05-11 2011-05-06 Procédé et dispositif pour faire fonctionner une lampe à décharge

Country Status (2)

Country Link
DE (1) DE102010028838A1 (fr)
WO (1) WO2011141363A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004020397A1 (de) 2004-04-23 2005-11-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Verfahren zum Betreiben einer Hochdruckentladungslampe
US20060012316A1 (en) * 2004-07-13 2006-01-19 Koji Hirata Lamp operation controller and controlling method of lamp operation
US20060066261A1 (en) * 2004-09-30 2006-03-30 Mohamed Rahmane High pressure discharge lamp control system and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004020397A1 (de) 2004-04-23 2005-11-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Verfahren zum Betreiben einer Hochdruckentladungslampe
US20060012316A1 (en) * 2004-07-13 2006-01-19 Koji Hirata Lamp operation controller and controlling method of lamp operation
US20060066261A1 (en) * 2004-09-30 2006-03-30 Mohamed Rahmane High pressure discharge lamp control system and method

Also Published As

Publication number Publication date
DE102010028838A1 (de) 2011-11-17

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