EP0116302A2 - Convertisseur - Google Patents

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Publication number
EP0116302A2
EP0116302A2 EP84100334A EP84100334A EP0116302A2 EP 0116302 A2 EP0116302 A2 EP 0116302A2 EP 84100334 A EP84100334 A EP 84100334A EP 84100334 A EP84100334 A EP 84100334A EP 0116302 A2 EP0116302 A2 EP 0116302A2
Authority
EP
European Patent Office
Prior art keywords
charging
capacitor
voltage
inverter
switch
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
EP84100334A
Other languages
German (de)
English (en)
Other versions
EP0116302B1 (fr
EP0116302A3 (en
Inventor
Manfred Dipl.-Ing. Klamt
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT84100334T priority Critical patent/ATE36108T1/de
Publication of EP0116302A2 publication Critical patent/EP0116302A2/fr
Publication of EP0116302A3 publication Critical patent/EP0116302A3/de
Application granted granted Critical
Publication of EP0116302B1 publication Critical patent/EP0116302B1/fr
Expired 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
    • H05B41/26—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
    • 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
    • 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 invention relates to a converter according to the preamble of claim 1.
  • the synchronous control of the charging switch depending on the voltage at one of the switches of the inverter according to the main patent, has the major advantage that the operating state of the step-up converter is automatically based on that of the inverter: for example, if the inverter connected to it is switched off in the event of a fault , the step-up converter automatically stops working and no more energy is pumped into the inverter. Conversely, the step-up converter starts automatically when the inverter starts to swing.
  • the current flow duration via the charging switch also depends on the voltage at the charging capacitor, the power supplied by the step-up converter changes automatically when the output voltage of the inverter is varied, for example to change the lamp power.
  • the inverter it is therefore sufficient to intervene in the inverter, for example to change its operating frequency or, in the case of a constant operating frequency, to change the control times of the switches of the inverter.
  • the converter can also be operated with DC voltage without any switchover, with all of the advantages listed remaining.
  • the invention has for its object to reduce the cost of components even further.
  • the solution to this problem is characterized in claim 1.
  • the saturation transformer Tr has two secondary windings L31, L32 and a monitoring winding L33; the secondary windings L31, L32 are connected to the control circuits of the primary and secondary transistors T1, T3 in such a way that they are alternately turned on during the remagnetization time of the saturation transformer.
  • the saturation transformer is dimensioned such that the operating frequency of the inverter determined by it is slightly above the resonance frequency of the Series resonant circuit is: This creates gaps between successive sleeves für tenu p, so that simultaneous conduction of primary and Sekundärtansistor and therefore a short circuit is the voltage on the charging capacitor C excluded.
  • Reverse current diodes D1, D2 are provided in parallel with each of the transistors for current conduction during the simultaneous blocking of both transistors.
  • the voltage of the charging capacitor C is applied to the load branch and leads to a charging of the switching capacitor C1 with the polarity indicated in the figure.
  • the current continues to flow through the load branch, driven by the choke L2 of the series resonant circuit, via the reverse current diode D2 until T3 turns on: Then the reversing capacitor C1 discharges via T3 and the load branch until T3 blocks again. The load current then continues to flow in the same direction via the charging capacitor C and the reverse current diode D1 until T1 is switched through again.
  • the step-up converter to the left of the dash-dotted line works with a power MOS transistor T2.1, the control of which is considerably simplified: its control electrode is in fact connected to a capacitor C5 via a resistor, which in series with a capacitor C7 is a voltage divider in parallel with the primary transistor T1 of the inverter.
  • the voltage at C5 is limited by a Zener diode D6.
  • This voltage divider, and in particular C7 is dimensioned such that the current flowing when blocking primary transistor T1 via C7 is sufficient to quickly charge both C5 and the capacitance of the control path of transistor T2.1 and thereby to control T2.1.
  • This power transistor then remains on until its control voltage is eliminated. This is the case at the latest when the primary transistor T1 is conductive again, since the capacitance of the control path is then discharged from T2.1 via C7 and T1.
  • T2.1 will block earlier, namely if transistor T8, which lies in parallel with capacitor C5, turns on and this transistor discharges the capacitance of the control path from T2.1. This is the case when the voltage across a delay capacitor C6 has reached a limit value given by a zener diode D3.
  • the charging of C6 is dependent on the voltage at the charging capacitor C, to which the delay capacitor C6 is connected in parallel via a resistor R62.
  • This resistor is also connected in series with a capacitor C4 and a resistor R1: in this way, the charging of C6 is also dependent on the AC component of the voltage on the charging capacitor C.
  • C6 is AC. is not connected to the charging capacitor C, but via a resistor R1 'to a voltage divider with the capacitors C4''andC', shown in dashed lines, which is connected in parallel to the rectifier G.
  • the charging capacitor C can also be included in this voltage divider, that is, C 'connected to the positive connection of C: this reduces the effort for the voltage divider. This is such that it is essentially only at twice the frequency of the network voltage is effective and essentially represents a short circuit for higher-frequency interference voltages, such as those generated by the step-up converter itself. This applies regardless of the type of step-up converter characterized in claim 1.
  • the delay capacitor C6 is also connected in parallel to the primary transistor T1 via a diode D8: it is therefore always discharged when T1 is conductive and begins charging at the moment when T1 is blocking, i.e. also simultaneously with the control of T2.1.
  • T2.1 is thus controlled synchronously with the inverter, its current flow time depending on the charging of the delay capacitor.
  • the reversing inverter and thus the step-up converter only start to work when the voltage at a starting capacitor C8 has reached such a value that its energy is switched to the control path of the primary transistor T1 via a trigger diode D13 and the latter is thus switched on.
  • the ignition capacitor C8 is connected to the charging capacitor C and via the resistors R2, R4 and an electrode of the lamp E.
  • a stop thyristor T4 is provided, to which a monitoring winding L33 of the saturation transformer Tr is connected in parallel via diodes D11, D12 and the ignition capacitor C8 via R2 and which has its holding current via the electrode of the discharge lamp adjacent to the charging capacitor C and a series resistor R4 receives-.
  • An RC element R3, C9 is also connected in parallel to the monitoring winding L33 via the diode D11, which in turn is connected in parallel to the control path of the stop thyristor T4 via a trigger diode D14.
  • the function and dimensioning of this circuit is based on the fact that the amplitude of the current flowing through the load branch with the discharge lamp and detected by the monitoring winding L33 is significantly greater when the lamp is not ignited (resonance case) than when the lamp is ignited (damped resonance circuit): after a through the designable number of unsuccessful start attempts has charged C9 to such an extent that the stop thyristor T4 ignites via the trigger diode D14 and short-circuits the monitoring winding L33.
  • the step-up converter Due to the synchronous control of the step-up converter depending on the square-wave voltage at the switches of the inverter, the step-up converter is automatically switched off with the inverter and switched on again when the inverter starts.
  • the inverter remains switched off until the holding current of the stop thyristor T4 is interrupted and it can therefore go back into the blocking state.
  • the AC mains voltage can be switched off, for example.
  • a shutdown is the result of a defective lamp that is replaced without switching off the mains voltage. Since the holding circuit is passed through an electrode of the lamp, the holding current is also interrupted automatically when the lamp is changed, so that the converter automatically starts up again after a new lamp is inserted.

Landscapes

  • Inverter Devices (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Polarising Elements (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Road Paving Structures (AREA)
  • Reinforced Plastic Materials (AREA)
  • Toys (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Amplifiers (AREA)
EP84100334A 1983-01-19 1984-01-13 Convertisseur Expired EP0116302B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84100334T ATE36108T1 (de) 1983-01-19 1984-01-13 Umrichter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3301632 1983-01-19
DE19833301632 DE3301632A1 (de) 1983-01-19 1983-01-19 Umrichter

Publications (3)

Publication Number Publication Date
EP0116302A2 true EP0116302A2 (fr) 1984-08-22
EP0116302A3 EP0116302A3 (en) 1986-02-12
EP0116302B1 EP0116302B1 (fr) 1988-07-27

Family

ID=6188637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84100334A Expired EP0116302B1 (fr) 1983-01-19 1984-01-13 Convertisseur

Country Status (8)

Country Link
US (1) US4562527A (fr)
EP (1) EP0116302B1 (fr)
JP (1) JPS59139875A (fr)
AT (1) ATE36108T1 (fr)
BR (1) BR8400197A (fr)
DE (2) DE3301632A1 (fr)
FI (1) FI79634C (fr)
ZA (1) ZA84369B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0553923A1 (fr) * 1992-01-28 1993-08-04 Matsushita Electric Works, Ltd. Dispositif d'ondulation
DE19619745A1 (de) * 1996-05-15 1997-11-20 Tridonic Bauelemente Schaltungsanordnung zum Betreiben einer Last und elektronisches Vorschaltgerät mit einer derartigen Schaltungsanordnung zum Betreiben einer Lampe

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3437514A1 (de) * 1984-10-12 1986-04-17 Siemens AG, 1000 Berlin und 8000 München Leuchte mit einer entladungslampe und einem elektronischen vorschaltgeraet
DE3541308C1 (en) * 1985-11-22 1987-02-05 Philips Patentverwaltung DC power supply generator e.g. for gas discharge lamp - obtains regulated DC from mains supply giving sinusoidal input to filter and rectifier
DE3541307C1 (en) * 1985-11-22 1987-02-05 Philips Patentverwaltung DC power supply generator e.g. for gas discharge lamp - obtains regulated DC voltage from mains supply giving sinusoidal input to filter and rectifier
US4882663A (en) * 1985-12-23 1989-11-21 Nilssen Ole K MOSFET flyback converter
JPS62293292A (ja) * 1986-06-13 1987-12-19 キヤノン株式会社 Ｅｌ駆動回路
DE3623749A1 (de) * 1986-07-14 1988-01-21 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum betrieb von niederdruckentladungslampen
US4873617A (en) * 1987-04-16 1989-10-10 Camera Platforms International, Inc. Power supply for arc lamps
US4873616A (en) * 1987-04-16 1989-10-10 Camera Platforms International, Inc. Power supply for arc lamps
US4984148A (en) * 1990-05-29 1991-01-08 Westinghouse Electric Corp. Two-phase bang-bang current control synchronizer
JP3294343B2 (ja) * 1992-11-13 2002-06-24 松下電工株式会社 電源装置
DE4425823A1 (de) * 1994-07-08 1996-01-11 Omnitronix Inc Elektronisches Vorschaltgerät

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1803486A1 (de) * 1968-10-17 1970-05-21 Siemens Ag Schaltungsanordnung zum Betrieb eines selbstgesteuerten Transistorwechselrichters
WO1981003102A1 (fr) * 1980-04-15 1981-10-29 Siemens Ag Ballast pour la connexion d'une lampe a decharge
WO1983000587A1 (fr) * 1981-07-31 1983-02-17 Kerscher, Max Convertisseur

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251752A (en) * 1979-05-07 1981-02-17 Synergetics, Inc. Solid state electronic ballast system for fluorescent lamps
US4264949A (en) * 1979-09-04 1981-04-28 Litton Systems, Inc. DC to DC power supply
US4481460A (en) * 1982-02-08 1984-11-06 Siemens Aktiengesellschaft Inverter with charging regulator having a variable keying ratio

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1803486A1 (de) * 1968-10-17 1970-05-21 Siemens Ag Schaltungsanordnung zum Betrieb eines selbstgesteuerten Transistorwechselrichters
WO1981003102A1 (fr) * 1980-04-15 1981-10-29 Siemens Ag Ballast pour la connexion d'une lampe a decharge
WO1983000587A1 (fr) * 1981-07-31 1983-02-17 Kerscher, Max Convertisseur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0553923A1 (fr) * 1992-01-28 1993-08-04 Matsushita Electric Works, Ltd. Dispositif d'ondulation
DE19619745A1 (de) * 1996-05-15 1997-11-20 Tridonic Bauelemente Schaltungsanordnung zum Betreiben einer Last und elektronisches Vorschaltgerät mit einer derartigen Schaltungsanordnung zum Betreiben einer Lampe

Also Published As

Publication number Publication date
FI79634C (fi) 1990-01-10
JPS59139875A (ja) 1984-08-10
EP0116302B1 (fr) 1988-07-27
ATE36108T1 (de) 1988-08-15
US4562527A (en) 1985-12-31
DE3473111D1 (en) 1988-09-01
FI79634B (fi) 1989-09-29
EP0116302A3 (en) 1986-02-12
FI840190A0 (fi) 1984-01-18
BR8400197A (pt) 1984-08-21
FI840190A (fi) 1984-07-20
ZA84369B (en) 1984-08-29
DE3301632A1 (de) 1984-07-26

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