EP1843645A2 - Circuit pour lampes à décharge haute pression - Google Patents

Circuit pour lampes à décharge haute pression Download PDF

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Publication number
EP1843645A2
EP1843645A2 EP07007165A EP07007165A EP1843645A2 EP 1843645 A2 EP1843645 A2 EP 1843645A2 EP 07007165 A EP07007165 A EP 07007165A EP 07007165 A EP07007165 A EP 07007165A EP 1843645 A2 EP1843645 A2 EP 1843645A2
Authority
EP
European Patent Office
Prior art keywords
lamp
ignition
circuit
operating voltage
capacitor
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
EP07007165A
Other languages
German (de)
English (en)
Other versions
EP1843645B1 (fr
EP1843645A3 (fr
Inventor
Ferdinand Franz Mertens
Christian Neumann
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.)
Bag Electronics GmbH
Original Assignee
Bag Electronics GmbH
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 Bag Electronics GmbH filed Critical Bag Electronics GmbH
Publication of EP1843645A2 publication Critical patent/EP1843645A2/fr
Publication of EP1843645A3 publication Critical patent/EP1843645A3/fr
Application granted granted Critical
Publication of EP1843645B1 publication Critical patent/EP1843645B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices
    • 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
    • H05B41/16—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies
    • H05B41/18—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having a starting switch

Definitions

  • the invention relates to a circuit arrangement for igniting a high-pressure gas discharge lamp, which is connected on the input side to a magnetic ballast for providing an AC supply to the lamp, according to the preamble of claim 1 and a method for operating a high-pressure gas discharge lamp with an ignition circuit.
  • the latter Due to the high electrical and thermal load, in particular at the electrodes of the high-pressure gas discharge lamp, the latter have a limited life, which leads to malfunction at the end of use. Typical is, for example, a so-called cycling operation, in which the lamps extinguish after a short burning time, are restarted by the ignition circuit, etc. Furthermore, there is the problem that due to the aging process in particular at the electrodes of the lamp high power losses are generated, which ultimately cause a short circuit or even bursting of the glass vessel of the lamp. Such effects can also lead to the fact that the ballast is damaged by the heat and must be replaced together with the defective lamp.
  • thermal switch in the supply circuit of the lamp, which interrupts the AC supply to the lamp when heat buildup occurs when the associated temperature sensor detects exceeding a predetermined temperature.
  • a thermal switch can be designed, for example, as a fuse, which responds after the occurrence of an elevated temperature in the vicinity of the ballast or the high-pressure gas discharge lamp.
  • the use of such a thermal switch is relatively uncertain, since such a temperature sensor can detect the fault in the lamp only delayed in time, because the heat loss must be transferred via heat conduction only from the place of origin of electrical power loss to the sensor.
  • the object of the invention is to at least partially avoid the described disadvantages of circuit arrangements of the prior art.
  • a circuit arrangement for igniting a high-pressure gas discharge lamp which is connected on the input side to a magnetic ballast for providing an AC supply to the lamp, with the features of claim 1.
  • the circuit arrangement according to the invention on an ignition transformer, which may be formed for example as a pulse transformer, which is connected on the primary side with a Zündauslösesciens and secondary side between the ballast and the lamp for transmitting an ignition pulse is arranged on the lamp.
  • the circuit arrangement further comprises a surge capacitor and a first switch element, wherein in the Zündauslöseschari a series circuit, comprising at least the first switch element and a primary winding of the Zündübertragers the shock capacitor is connected in parallel.
  • the circuit arrangement according to the invention is characterized in that a series connection, which has at least one controllable second switch means, the lamp is connected in parallel and a means for detecting the degree of asymmetry of the lamp voltage is provided and a control device for shorting the lamp by driving the second Switch means in response to the detected unbalance of the lamp operating voltage.
  • the circuit arrangement according to the invention is designed to determine the degree of asymmetry of the lamp operating voltage, the Aging condition of the gas discharge lamp can be determined before malfunction or damage to the ballast or the circuit arrangement occur.
  • This effect is due to the fact that such aging of a high-pressure gas discharge lamp as a rule is due to an asymmetry of the cathode drop voltage at the two electrodes, which in turn is caused by a difference in the work function of the electrons at the two electrodes.
  • the controllable second switch means can short the lamp and thus erase it, thereby preventing the degree of unbalance of the lamp operating voltage from being further increased. In this way, the emergence of a dangerous power loss during operation of the lamp is avoided, since otherwise caused by the asymmetry of the cathode drop voltage at the electrodes despite the AC power rectification effect in the lamp, in which the magnetic ballast, in particular a choke, has no current-limiting effect.
  • the controllable by the controller for shorting the lamp second switch means is part of a series circuit, which is connected in parallel to the lamp and at least this switch means and the connections to the lamp.
  • the circuit arrangement according to the invention is accordingly able to terminate the operation of the high-pressure gas discharge lamp early enough before other components can be damaged during further operation of the lamp or other malfunctions can occur. In general, then it is sufficient to replace the aged high-pressure gas discharge lamp to operate the relevant lighting device again.
  • control device of the circuit arrangement has a timer circuit for controlling the ignition operation of the circuit arrangement, in particular with a counting device for detecting the number of lamp ignitions and / or a counting device for detecting the past ignition time for a detonation attempt.
  • the total ignition time of a Zünd baths can be detected and compared with a stored value. If this predetermined value is exceeded, it is possible to conclude that the lamp has malfunctioned and, to that extent, to prevent further ignition attempts. The same applies to the exceeding of a predetermined number of lamp ignitions within the ignition operation of the circuit arrangement.
  • controllable, third switch for switching off and / or blocking the Zündauslösesclien, which is connected in parallel, for example, the surge capacitor and insofar short-circuits if necessary.
  • a series circuit which has at least one capacitor and one resistor, wherein this series connection of the lamp is connected in parallel.
  • the magnetic ballast is designed as a conventional throttle.
  • the series circuit comprising the second switch means does not comprise this throttle, so that the choke is not loaded by the short circuit caused by the second switch means for extinguishing the lamp.
  • the method the above object is achieved by a method for operating a high-pressure gas discharge lamp, which is connected to a magnetic ballast for providing an AC supply voltage, with an ignition circuit, which is switched off after the ignition of the lamp.
  • the inventive method is characterized in that during operation of the lamp, the degree of asymmetry of the lamp operating voltage is detected and this degree is compared with a predetermined value and when the predetermined value is exceeded, the lamp is short-circuited.
  • This time interval may, for example, comprise a few milliseconds sufficient to extinguish the high pressure gas discharge lamp. Thereafter, the short circuit can be canceled again, as far as it is ensured that the lamp is not ignited or subsequent ignition attempts are allowed.
  • the blockage of the ignition circuit is preferably removed after it is disconnected from the power supply and subsequently reconnected to this.
  • the detection of the degree of asymmetry of the lamp voltage during operation of the lamp can also be used to determine the time course of this asymmetry, whereby ultimately a prognosis for the remaining operating time of the lamp can be determined.
  • the time duration is determined, which remains until the lamp reaches a predetermined limit of the unbalance of the lamp operating voltage at which the lamp is turned off according to the invention.
  • This determined period of time can be optically displayed or digitally or analogue output at a corresponding port for further processing or display.
  • the detected measure of the unbalance of the lamp operating voltage during operation may be used to establish an allowable number of ignition attempts. After expiration of this determined in dependence on the detected degree of asymmetry of the lamp operating voltage number of ignition attempts can then the ignition circuit be blocked.
  • the determined degree of asymmetry of the lamp operating voltage is used for determining the permitted ignition time within which ignition attempts may be carried out.
  • the permitted number of ignition attempts or the permitted ignition time can be calculated in proportion to the distance of the detected asymmetry from the permitted asymmetry of the lamp operating voltage. In this case, this allowed unbalance of the lamp operating voltage just corresponds to the degree just before the lamp is extinguished.
  • Fig. 1 shows a circuit arrangement according to the invention, which is designed here as a Zündscensan effetaku 1.
  • the high-pressure gas discharge lamp 3 is connected, via which a lamp operating voltage U L drops during operation, the lamp current is indicated by I L.
  • the ignition circuit 1 is connected via a designed as a throttle 2 magnetic ballast to the mains voltage U N.
  • the circuit arrangement comprises a triggering circuit, which in the one shown in FIG Embodiment, a surge capacitor 30, the primary-side coil winding 13 of a Zündübertragers 10 and a controllable switch 20 has.
  • the series connection of the primary-side coil winding 13 and the switch 20 is connected in parallel to the surge capacitor 30.
  • the secondary-side coil winding 11 of the Zündübertragers 10 is disposed in the supply line of the lamp.
  • the surge capacitor 30 is connected in parallel with a capacitor 40 and a resistor 41 in series. This parallel connection serves to charge the surge capacitor 30.
  • the circuit arrangement shown comprises a controller 50, which has a timer module as a subassembly.
  • the controller 50 actuates the switch S1 for generating a primary-side ignition pulse in the Zündauslösesclien, which is superimposed pulse-transformed on the secondary side of the Zündübertragers the AC power supply to the lamp.
  • the switch 20 is e.g. designed as a field effect transistor.
  • the circuit arrangement has a series connection, which comprises at least the resistor 61 and the capacitor 60 and which is connected to the electrodes of the lamp 3 and insofar as this is connected in parallel.
  • this series connection connected in parallel with the lamp also has the secondary-side coil winding 11.
  • the Con-troller 50 is connected via the connecting lines 54, 55 for power supply.
  • the control line 51 controls the switch 20 of the Zündauslöseschaltnikes.
  • the controller 50 has a sensor line 53 which is at the voltage U C of the capacitor 60. The detected voltage on the line 53 U C is digitized in the controller via an analog-to-digital converter, not shown, so that the voltage at the capacitor 60 is ready for further processing binary coded in the controller 50.
  • the timer 50 has a further control line 52 with which a second switch 70, which is also designed as a field-effect transistor, is driven.
  • the switch 70 together with the secondary winding 11 of the Zündübertragers 10 a series circuit which is connected in parallel to the lamp 3, so that the switch 70, the lamp can be short-circuited.
  • the second switch e.g. can also be designed as a thyristor or triac.
  • the operation of the ignition circuit according to the invention shown in Fig. 1 will be described below.
  • the switch S1 briefly to close and then to open again.
  • the surge capacitor 30 serving as the input power source for the tripping circuit discharges via the primary-side coil winding 13 of the ignition transformer 10.
  • the magnetization of the primary-side coil winding is transformed via the Zündübertragerkern 12 to the secondary-side coil winding 11 and the mains voltage superimposed.
  • a secondary-side ignition pulse is thus applied to the lamp 3, so that it can ignite.
  • the resonant circuit via the capacitors C2 and C3 is closed, so that the lamp choke 2 is not loaded with the ignition voltage.
  • the capacitor 30 is charged again via the parallel connection of the capacitor 40 and the resistor 41. If the lamp has not ignited after the first ignition pulse and the mains voltage is still above the lamp burning voltage, the switch 20 closed again by the controller 50 in the same half-wave to generate a primary-side ignition pulse and again opened after a period of a few microseconds. This process can be repeated several times until finally the lamp ignites.
  • the controller 50 continuously determines the degree of unbalance of the lamp operating voltage.
  • the series connection of the secondary-side coil winding 11, the resistor 61 and the capacitor 60, which is connected to the electrodes of the lamp 3 is used.
  • the secondary-side coil winding 11 does not interfere with the detection of this DC voltage component, since the former has a negligible DC resistance.
  • the capacitor 60 is symmetrically charged or discharged.
  • the voltage U C at the capacitor 60 is digitized by the controller 50 by means of an A / D converter, not shown, whose input is connected to the measuring line 53.
  • the controller 50 on the capacitor 60 detects a DC voltage component identical to zero.
  • the controller 50 measures a non-zero DC voltage component of the voltage U C , which is a measure of the unbalance of the lamp operating voltage and from the controller 50 with a predetermined value is compared. If, during operation of the lamp, this preset value is exceeded, the lamp 3 is switched off in order to avoid consequential damage, which could be caused for example due to excessive temperature development. For this purpose, the controller 50 controls the switch 70 to close via the control line 52.
  • the controller 50 re-directs the switch 70 to open. Since the controller 50 has detected that the lamp is faulty, the control line 51 is blocked, so that the switch 20 in the Zündauslösesclien can not be controlled to close and thus not to generate a firing pulse.
  • the controller 50 is set to re-initialize after the power is turned off and then turned on again, and then the switch 20 can again be driven to generate a primary-side firing pulse. It is assumed that after disconnecting the controller from the mains, the lamp replaced and after restarting the network, the new lamp can be operated as described.
  • the controller 50 includes a timer device having, in the described embodiment, a count device for detecting the number of lamp firings and a counter for detecting the past ignition timing for a firing attempt.
  • a timer device having, in the described embodiment, a count device for detecting the number of lamp firings and a counter for detecting the past ignition timing for a firing attempt.
  • an unillustrated memory area is provided in the controller 50, in which the permitted number of lamp ignitions or the allowable ignition time for a detonation attempt are stored.
  • the allowed number of ignition attempts and / or the allowable ignition time is made in a Zünd bath of the determined measure for the unbalance of the lamp operating voltage. The lower the unbalance of the lamp operating voltage, the higher the number of permitted lamp ignitions or the permitted ignition time. If the measured unbalance of the lamp operating voltage approaches the limit value, the number of permitted ignition attempts or the permitted ignition time is correspondingly reduced in order to damage the magnetic ballast or ignition circuit when the lamp is in "end-of-life" state avoid.
  • the circuit arrangement 1 does not comprise the magnetic ballast designed as a choke 2. In another embodiment of the invention, however, it is provided to integrate the ballast and the ignition circuit in a single unit, see Fig. 2.
  • the embodiment of the circuit arrangement shown in FIG. 2 is otherwise constructed very similar to that shown in FIG. 1 and differs from this otherwise only in the design of the triggering circuit.
  • Its switch 20 is designed here as a passive, self-controlled switch. In the circuit arrangement shown in FIG.
  • the switch designed as Sidac or triac compares the voltage applied to it with a switch-internal comparator 21 and switches on exceeding a predetermined voltage value, here about 200 volts.
  • a primary ignition pulse is triggered by the Discharge of the surge capacitor 30 is generated, the switch 20 opens again when its holding current is exceeded.
  • the electrical design of the components is designed in such a way that here too the triggering circuit is set up for generating a plurality of ignition pulses within a network half-cycle.
  • controller 50 in FIG. 2 can block the generation of primary ignition pulses by controlling a switch 80 to close via its control line 51 is, which is arranged parallel to the surge capacitor 30.
  • the trigger circuit is in turn blocked when, as described above, it has been detected that a predetermined amount of unbalance of the lamp operating voltage has been reached.

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  • Circuit Arrangements For Discharge Lamps (AREA)
EP20070007165 2006-04-07 2007-04-05 Circuit pour lampes à décharge haute pression Not-in-force EP1843645B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610016827 DE102006016827A1 (de) 2006-04-07 2006-04-07 Schaltungsanordnung für Hochdruck-Gasentladungslampen

Publications (3)

Publication Number Publication Date
EP1843645A2 true EP1843645A2 (fr) 2007-10-10
EP1843645A3 EP1843645A3 (fr) 2008-07-02
EP1843645B1 EP1843645B1 (fr) 2015-03-25

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ID=38229302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070007165 Not-in-force EP1843645B1 (fr) 2006-04-07 2007-04-05 Circuit pour lampes à décharge haute pression

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EP (1) EP1843645B1 (fr)
DE (1) DE102006016827A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT12721U1 (de) * 2011-04-22 2012-10-15 Tridonic Gmbh & Co Kg Vorrichtung zum betreiben einer hochdruckentladungslampe

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010039487A1 (de) * 2010-08-18 2012-02-23 Osram Ag Schaltungsanordnung und Verfahren zum Betrieb einer Gasentladungslampe
DE102010042776A1 (de) * 2010-10-21 2012-04-26 Bag Engineering Gmbh Vorrichtung und Verfahren zur Zündung von HID-Lampen mit CWA
DE102010043081A1 (de) * 2010-10-28 2012-05-03 Bag Engineering Gmbh Zündschaltungsanordnung zum Zünden einer Entladungslampe wie einer Hochdrucklampe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19531622A1 (de) 1995-08-28 1997-03-06 Tridonic Bauelemente Zündschaltung für eine Hochdruck-Gasentladungslampe
DE19531623A1 (de) 1995-08-28 1997-03-06 Tridonic Bauelemente Verfahren und Schaltungsanordnung zum Zünden einer Hochdruck-Gasentladungslampe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207500A (en) * 1978-12-14 1980-06-10 Area Lighting Research, Inc. Cut-off arrangement for and method of protecting a ballast-starter circuit from high pressure sodium lamp cycling malfunction
DE102004045834A1 (de) * 2004-09-22 2006-03-23 Bag Electronics Gmbh Zündgerät

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19531622A1 (de) 1995-08-28 1997-03-06 Tridonic Bauelemente Zündschaltung für eine Hochdruck-Gasentladungslampe
DE19531623A1 (de) 1995-08-28 1997-03-06 Tridonic Bauelemente Verfahren und Schaltungsanordnung zum Zünden einer Hochdruck-Gasentladungslampe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT12721U1 (de) * 2011-04-22 2012-10-15 Tridonic Gmbh & Co Kg Vorrichtung zum betreiben einer hochdruckentladungslampe

Also Published As

Publication number Publication date
EP1843645B1 (fr) 2015-03-25
DE102006016827A1 (de) 2007-10-11
EP1843645A3 (fr) 2008-07-02

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