EP0179376B1 - Controllable dc voltage supply for operating electric gas-discharge radiators - Google Patents

Controllable dc voltage supply for operating electric gas-discharge radiators Download PDF

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Publication number
EP0179376B1
EP0179376B1 EP85112956A EP85112956A EP0179376B1 EP 0179376 B1 EP0179376 B1 EP 0179376B1 EP 85112956 A EP85112956 A EP 85112956A EP 85112956 A EP85112956 A EP 85112956A EP 0179376 B1 EP0179376 B1 EP 0179376B1
Authority
EP
European Patent Office
Prior art keywords
radiators
voltage supply
voltage source
controllable
regulable
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.)
Expired
Application number
EP85112956A
Other languages
German (de)
French (fr)
Other versions
EP0179376A1 (en
Inventor
Heiko Dr. Schultz
Manfred Prof. Fender
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.)
Hoechst AG
Original Assignee
Hoechst 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 Hoechst AG filed Critical Hoechst AG
Publication of EP0179376A1 publication Critical patent/EP0179376A1/en
Application granted granted Critical
Publication of EP0179376B1 publication Critical patent/EP0179376B1/en
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
    • H05B41/16—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
    • H05B41/20—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 no starting switch
    • H05B41/23—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 no starting switch for lamps not having an auxiliary starting electrode
    • H05B41/232—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 no starting switch for lamps not having an auxiliary starting electrode for low-pressure 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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor

Definitions

  • gas discharge lamps such as mercury vapor lamps
  • a current-voltage characteristic curve which, depending on the lamp current and type of lamp, can assume both positive and negative slopes.
  • Special voltage sources that take into account the negative current-voltage characteristics are therefore required for their operation.
  • Ballast coils, stray field transformers, transducers and thyristor controllers with downstream transformers are known as voltage sources for such radiators.
  • These power supplies are complex to adapt to different radiator powers and can only take into account changed network conditions to a small extent. They also have high electrical losses, weight and space requirements.
  • the invention seeks to remedy this.
  • the invention is therefore based on the object of providing a controllable voltage supply for gas discharge lamps which operates with little loss, can compensate for network fluctuations, has a modular structure and can be easily adapted to changing lamp types.
  • variable voltage source can be regulated continuously by changing its amplitude or changing its duty cycle (clocking).
  • the rigid (uncontrollable) direct voltage source U 2 is connected in series with the changeable (controllable) direct voltage source U 2 .
  • S symbolizes the radiator and Z a ballast impedance (inductance).
  • the voltage source U 2 shown in FIG. 2 consisting of e.g. B. from the three phases L "L 2 , L 3 of a three-phase network and the bridge circuit from the thyristors T i , T 2 , T 3 and the diodes D 1 , D 2 , D 3.
  • the one from FIG 3 visible DC voltage source U 2 which in turn consists, for example, of the three phases L “L2, L 3 of a three-phase network and a bridge circuit composed of diodes D to D 6 , which an electronic switch T, z. B. contains a transistor, thyristor or gate turn-off thyristor.
  • U 2 supplies only a part of the voltage required to operate the radiator S and thus only an equivalent part of the electrical radiator power.

Landscapes

  • Rectifiers (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Ac-Ac Conversion (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Description

Gasentladungsstrahler, wie beispielsweise Quecksilberdampfstrahler, sind im Gegensatz zu üblichen Stromverbrauchern durch eine Strom-Spannungskennlinie gekennzeichnet, die je nach Strahlerstrom und Strahlerart sowohl positive als auch negative Steigung annehmen kann. Für ihren Betrieb sind also besondere Spannungsquellen etforderlich, die den negativen Strom-Spannungskennlinien Rechnung tragen. Als Spannungsquellen für solche Strahler sind Vorschaltspulen, Streufeldtransformatoren, Transduktoren und Thyristorsteller mit nachgeschalteten Transformatoren bekannt. Diese Stromversorgungen sind aufwendig an verschiedene Strahlerleistungen anzupassen und können nur in geringem Umfang veränderten Netzverhältnissen Rechnung tragen. Sie haben außerdem hohe elektrische Verluste, hohes Gewicht und großen Platzbedarf.In contrast to conventional power consumers, gas discharge lamps, such as mercury vapor lamps, are characterized by a current-voltage characteristic curve which, depending on the lamp current and type of lamp, can assume both positive and negative slopes. Special voltage sources that take into account the negative current-voltage characteristics are therefore required for their operation. Ballast coils, stray field transformers, transducers and thyristor controllers with downstream transformers are known as voltage sources for such radiators. These power supplies are complex to adapt to different radiator powers and can only take into account changed network conditions to a small extent. They also have high electrical losses, weight and space requirements.

Hier will die Erfindung Abhilfe schaffen. Der Erfindung liegt demnach die Aufgabe zugrunde, eine regelbare Spannungsversorgung für Gasentladungsstrahler zu schaffen, die verlustarm arbeitet, Netzschwankungen ausregeln kann, modular aufgebaut und einfach an wechselnde Strahlertypen angepaßt werden kann.The invention seeks to remedy this. The invention is therefore based on the object of providing a controllable voltage supply for gas discharge lamps which operates with little loss, can compensate for network fluctuations, has a modular structure and can be easily adapted to changing lamp types.

Die Aufgabe wird durch eine regelbare Gleichspannungsversorgung gemäß Anspruch 1 gelöst.The object is achieved by a controllable direct voltage supply according to claim 1.

In einer Ausgestaltung kann die veränderliche Spannungsquelle stufenlos durch Veränderung ihrer Amplitude oder Veränderung ihrer Einschaltdauer (Taktung) regelbar sein.In one embodiment, the variable voltage source can be regulated continuously by changing its amplitude or changing its duty cycle (clocking).

Die Erfindung wird anhand der Figuren näher erläutert. Es zeigt :

  • Figur 1 die Gleichspannungsversorgung bestehend aus unveränderbarer und veränderbarer Gleichspannungsquelle, schematisch dargestellt ;
  • Figur 2 den veränderbaren Teil der Spannungsquelle im Detail und zwar für stufenlose Regelung der Amplitude und
  • Figur 3 den veränderbaren Teil der Spannungsquelle für Regelung der Einschaltdauer (Taktung).
The invention is illustrated by the figures. It shows :
  • Figure 1 shows the DC voltage supply consisting of unchangeable and changeable DC voltage source, shown schematically;
  • Figure 2 shows the changeable part of the voltage source in detail, namely for stepless regulation of the amplitude and
  • Figure 3 shows the changeable part of the voltage source for regulating the duty cycle (clocking).

Die starre (unregelbare) Gleichspannungsquelle U, ist mit der veränderbaren (regelbaren) Gleichspannungsquelle U2 in Reihe geschaltet. Parallel zu U2 ist eine Freilaufdiode D angeordnet, über die der Strahlerstrom bei U2 = 0 fließt. S symbolisiert den Strahler und Z eine Vorschaltimpedanz (Induktivität). Für eine stufenlose Regelung eignet sich die aus Figur 2 ersichtliche Spannungsquelle U2, bestehend z. B. aus den drei Phasen L" L2, L3 eines Drehstromnetzes und der Brückenschaltung aus den Thyristoren Ti, T2, T3 und den Dioden D1, D2, D3. Für die taktweise Regelung eignet sich die aus Figur 3 ersichtliche Gleichspannungsquelle U2, die wiederum z. B. aus den drei Phasen L" L2, L3 eines Drehstromnetzes sowie einer Brückenschaltung aus den Dioden D, bis D6 besteht, die einen elektronischen Schalter T, z. B. einen Transistor, Thyristor oder Gate-Turn-Off Thyristor, enthält. U2 liefert nur einen Teil der zum Betrieb des Strahlers S erforderlichen Spannung und damit auch nur einen äquivalenten Teil der elektrischen Strahlerleistung.The rigid (uncontrollable) direct voltage source U 2 is connected in series with the changeable (controllable) direct voltage source U 2 . A freewheeling diode D is arranged in parallel with U 2 , via which the lamp current flows at U 2 = 0. S symbolizes the radiator and Z a ballast impedance (inductance). The voltage source U 2 shown in FIG. 2 , consisting of e.g. B. from the three phases L "L 2 , L 3 of a three-phase network and the bridge circuit from the thyristors T i , T 2 , T 3 and the diodes D 1 , D 2 , D 3. For the cyclical control, the one from FIG 3 visible DC voltage source U 2 , which in turn consists, for example, of the three phases L "L2, L 3 of a three-phase network and a bridge circuit composed of diodes D to D 6 , which an electronic switch T, z. B. contains a transistor, thyristor or gate turn-off thyristor. U 2 supplies only a part of the voltage required to operate the radiator S and thus only an equivalent part of the electrical radiator power.

Claims (3)

1. A regulable direct voltage supply for the operation of gas discharge radiators, wherein the voltage supply consists of one or more unregulated voltage sources, a variable voltage source connected in series with the latter and a freewheeling diode, arranged in parallel with the variable voltage source, via which the radiator current flows if no voltage is supplied by the variable voltage source.
2. A regulable direct voltage supply for the operation of gas discharge radiators as claimed in claim 1, wherein the variable voltage source is infinitely regulable.
3. A regulable direct voltage supply for the operation of gas discharge radiators as claimed in claim 1, wherein the variable voltage source is regulable in a gated manner.
EP85112956A 1984-10-24 1985-10-12 Controllable dc voltage supply for operating electric gas-discharge radiators Expired EP0179376B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3438896 1984-10-24
DE19843438896 DE3438896A1 (en) 1984-10-24 1984-10-24 REGULATABLE DC VOLTAGE SUPPLY FOR THE OPERATION OF GAS DISCHARGE RADIATORS

Publications (2)

Publication Number Publication Date
EP0179376A1 EP0179376A1 (en) 1986-04-30
EP0179376B1 true EP0179376B1 (en) 1989-04-26

Family

ID=6248631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112956A Expired EP0179376B1 (en) 1984-10-24 1985-10-12 Controllable dc voltage supply for operating electric gas-discharge radiators

Country Status (4)

Country Link
EP (1) EP0179376B1 (en)
JP (1) JPS61101998A (en)
CN (1) CN1007035B (en)
DE (2) DE3438896A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3708784A1 (en) * 1987-03-18 1988-09-29 Hoechst Ag METHOD FOR INCREASING THE YIELD OF LIGHT INITIATED REACTIONS USING GAS DISCHARGE RADIATORS
US5028844A (en) * 1989-02-23 1991-07-02 Matsushita Electric Works, Ltd. DC discharge lamp lighting device
DE19517039C2 (en) * 1994-10-25 2002-07-18 Guenther O Schenck Device for oxidative photopurification

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1051975B (en) * 1956-03-16 1959-03-05 Triflux Soc Arrangement for progressive end and for the power supply of light tubes
GB1255532A (en) * 1968-05-14 1971-12-01 Rca Corp Control circuit

Also Published As

Publication number Publication date
DE3438896A1 (en) 1986-04-24
DE3569863D1 (en) 1989-06-01
CN1007035B (en) 1990-02-28
CN85107447A (en) 1986-04-10
JPS61101998A (en) 1986-05-20
EP0179376A1 (en) 1986-04-30

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