EP0687135B1 - Gerät zur Spannungsregelung einer Leistungsquelle für Entladungslampen - Google Patents

Gerät zur Spannungsregelung einer Leistungsquelle für Entladungslampen Download PDF

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Publication number
EP0687135B1
EP0687135B1 EP95108420A EP95108420A EP0687135B1 EP 0687135 B1 EP0687135 B1 EP 0687135B1 EP 95108420 A EP95108420 A EP 95108420A EP 95108420 A EP95108420 A EP 95108420A EP 0687135 B1 EP0687135 B1 EP 0687135B1
Authority
EP
European Patent Office
Prior art keywords
circuit
mains
transformer
voltage
lamps
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 - Lifetime
Application number
EP95108420A
Other languages
English (en)
French (fr)
Other versions
EP0687135A3 (de
EP0687135A2 (de
Inventor
Giuseppe Squellati
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.)
TEMARS S.P.A.
Original Assignee
TEMARS SpA
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Filing date
Publication date
Application filed by TEMARS SpA filed Critical TEMARS SpA
Priority to SI9530079T priority Critical patent/SI0687135T1/xx
Publication of EP0687135A2 publication Critical patent/EP0687135A2/de
Publication of EP0687135A3 publication Critical patent/EP0687135A3/de
Application granted granted Critical
Publication of EP0687135B1 publication Critical patent/EP0687135B1/de
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
    • 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
    • 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
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3922—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations and measurement of the incident light
    • 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
    • H05B41/40—Controlling the intensity of light discontinuously

Definitions

  • the present invention concerns a device for the regulation of electrical supply voltage to electric-discharge lamps.
  • the present invention concerns a device capable of regulating the electrical supply voltage to electric-discharge lamps in order to obtain substantial reductions in power consumption.
  • Fig. 6 shows, in a general manner, the curves relating to the luminous flux emitted by an electric-discharge lamp (ALPHA) and by an incandescent lamp (BETA), as a function of the applied voltage.
  • APHA electric-discharge lamp
  • BETA incandescent lamp
  • a device which, when inserted between the mains and the load made up of electric-discharge lamps, would be capable of automatically regulating the voltage applied to the load during specified periods, for example at night, when the small drop in light output can be tolerated.
  • the device would bring back the voltage to its mains value when the luminosity must be at its maximum.
  • U.S. patent 4,189,664 discloses a power control device for the automatic control of power consumption in a lighting load wherein the lighting load consists of incandescend and fluorescent lamps.
  • the Applicant has now found a device which permits the application of the regulation referred to above without generating any radio-frequency disturbances in its environment and/or phase change towards the power supply line.
  • the single-winding transformer is the element regulating the supply to the lamps. This is because, commanded by the power circuit which controls the switching of the load (lamps) between the taps, it effectively regulates the voltage to the user (lamps). In addition, the transformer maintains its output voltage constant when faced with mains voltage variations by altering its own working turns.
  • any arrangement capable of operating the transformer function as described above can be employed in the device forming the subject of the present application, even if an autotransformer consisting of a winding on a core is preferred.
  • the output of the autotransformer comprises a number of taps, each of which supplies a decreasing voltage.
  • the number of taps and the intermediate voltage values depend on the type of lamps to be regulated.
  • the power circuit carries out the function of interface between the command/control circuits and the load, switching the load to the appropriate transformer tap. It consists basically of a number of contactors or electromechanical relays (equal in number to the quantity of transformer taps) which make it possible to switch the load to the desired voltage. Alternatively, the power circuit can be constructed employing static (semiconductor-type) relays.
  • the control circuit consist basically of:
  • the measurement circuit has the task of continuously measuring the mains voltage and to supply, to the threshold circuit, a voltage to be compared with the preset value. It comprises an A.D.C. (Analogue to Digital Converter), constructed using integrated circuits and discrete components. As this circuit is connected to the mains voltage, it supplies, in real time, the value of the mains voltage (in digital form) to the threshold circuit.
  • A.D.C. Analogue to Digital Converter
  • the threshold circuit compares the voltage obtained from the measurement circuit with the preset value and sends the appropriate signal to the command circuit.
  • the threshold circuit consists essentially of a digital comparator.
  • the command circuit processes the signal supplied by the threshold circuit and sends, to the power circuit, the increase/reduce command for the desired variation in the user voltage.
  • the command circuit consists essentially of a forward-back counter.
  • the correction circuit has the function of checking the possible variations in the voltage supplied to the lamps at the output of the device forming the subject of the present invention. Any possible voltage variation, usually undesired, produces a signal which is then used by the threshold circuit as a correction to the preset voltage value.
  • the correction circuit basically consists of a transformer, a diode-type rectifier bridge with a filtering capacitor and of a transistor-type amplifier circuit, with the possibility of adjustment.
  • the above-mentioned circuits may also include a by-pass circuit which permits the switching of the load directly across the mains in the cases of fault or maintenance.
  • This circuit consists essentially of a manual or automatic disconnecting switch. In its latter form, it is ready to act automatically when a fault occurs in the device.
  • the device forming the subject of the present invention comprises:
  • the device illustrated in this example also comprises a correction circuit (F) connected to a photocell (G) which, checking the ambient luminosity, acts upon the correction circuit so as to maintain the above-mentioned ambient luminosity constant as the natural luminosity changes.
  • F correction circuit
  • G photocell
  • the device also comprises a by-pass (L), which disconnects the device forming the subject of the present invention in the cases of fault or maintenance.
  • L a by-pass
  • the measurement circuit C connected to the mains R, comprises the following successive elements:
  • the threshold circuit D consists essentially of a threshold comparator (D 1 ), which receives the 12 signals from the ADC (C 5 ) and 12 preset signals (D 2 ).
  • a correction signal (F 4 ) can also arrive at the comparator D 1 to correct the preset signals D 2 .
  • the command circuit (E) comprises the following elements:
  • the correction circuit F comprises the following elements:
  • the device When, during defined time periods (for example at night) it is possible to reduce the luminous intensity of the lamps without incurring user discomfort, or under the command of a photocell which detects the level of the ambient illumination and correlates it with the time zone, the device automatically switches the load to a preset voltage which is normally 30-40% below the nominal value, but still sufficient to assure the luminosity desired during the respective time zone.
  • a 30% reduction in the supply voltage corresponds to a 30% reduction in the power consumed and, if it is borne in mind that the present device could function during a third of the full day, it can be seen that, over 24 hours, the average saving derided from it is about 20% of the overall consumption of electrical energy during the full day.
  • the lamps installed consume a total of at least 50 kW.
  • the lamps are lit 24 hours a day which, in terms of electrical power consumed, corresponds to 1200 kWh. It can be deduced that, by limiting to only 30% the voltage drop applied by means of the present device for 16 hours a day, the energy saving is 240 kWh.
  • the device for the regulation of electrical supply voltage to electric discharge lamps forming the subject of the present invention can be constructed employing a PLC (Programmable Logic Computer) with the corresponding software).
  • PLC Programmable Logic Computer

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Electroluminescent Light Sources (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Dc-Dc Converters (AREA)
  • Control Of El Displays (AREA)

Claims (6)

  1. Vorrichtung für die Regelung der elektrischen Betriebsspannung von Gasentladungslampen, welche umfaßt:
    a) einen Transformator mit einzelner Wicklung (A), der mit einem Eingangsbereich, der an die Netzstromversorgung (R) angeschlossen ist, und einem Ausgangsbereich, der aus einer Reihe von (Spannungs-) Abgriffstellen (A1-A4) besteht, ausgestattet ist;
    b) einen zwischen den Transformator-Abgriffstellen und den Gasentladungslampen (H) zwischengeschalteten Schaltkreis (B);
    dadurch gekennzeichnet, daß die Vorrichtung auch umfaßt
    c) einen direkt über das Netz versorgten Regelkreis, der den Schaltkreis regelt, wobei der Regelkreis im wesentlichen besteht aus:
    i) einem am Transformator-Eingang an das Netz angeschlossenen ADW (Analog-Digital-Wandler) als Meßstromkreis (C);
    ii) einem nach dem Meßstromkreis angeschlossenen Grenzwertmelder als Schwellenstromkreis (D);
    iii) einem nach dem Schwellenstromkreis angeschlossenen bidirektionalen Zähler als Steuerstromkreis (E) zur Regelung des Schaltkreises.
  2. Vorrichtung nach Anspruch 1, worin der Regelkreis einen Korrekturstromkreis (F) umfaßt, der im wesentlichen aus einem Transformator aus einer Brückengleichrichter-Diode mit einer Siebkondensator-Brücke mit einem Transistor-Verstärkerstromkreis mit Einstellmöglichkeit besteht, der am Lampeneingang an das Netz angeschlossen ist und ein Korrektursignal an den Schwellenstromkreis sendet.
  3. Vorrichtung nach Anspruch 1, worin der Transformator mit einzelner Wicklung die Einheit bildet, die die Stromzufuhr zu den Lampen regelt.
  4. Vorrichtung nach Anspruch 2, worin der Transformator mit einzelner Wicklung ein Spartransformator ist, der aus einer Wicklung auf einem Kern besteht.
  5. Vorrichtung nach irgendeinem der vorhergehenden Ansprüche, worin der Schaltkreis die Funktion einer Schnittstelle zwischen den Regel-/Steuerstromkreisen und dem Verbraucher wahrnimmt.
  6. Vorrichtung nach Anspruch 4, worin der Schaltkreis im wesentlichen aus einer Reihe von Schaltschützen oder elektromechanischen Relais oder aus statischen Relais unter Verwendung von Halbleitern besteht.
EP95108420A 1994-06-09 1995-06-01 Gerät zur Spannungsregelung einer Leistungsquelle für Entladungslampen Expired - Lifetime EP0687135B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9530079T SI0687135T1 (en) 1994-06-09 1995-06-01 Device for the regulation of electrical supply voltage to electric-discharge lamps

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI941207 1994-06-09
IT94MI001207A IT1275608B1 (it) 1994-06-09 1994-06-09 Dispositivo per la regolazione della tensione elettrica di alimentazione di lampade elettroluminescenti

Publications (3)

Publication Number Publication Date
EP0687135A2 EP0687135A2 (de) 1995-12-13
EP0687135A3 EP0687135A3 (de) 1996-11-13
EP0687135B1 true EP0687135B1 (de) 1998-04-29

Family

ID=11369087

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95108420A Expired - Lifetime EP0687135B1 (de) 1994-06-09 1995-06-01 Gerät zur Spannungsregelung einer Leistungsquelle für Entladungslampen

Country Status (7)

Country Link
EP (1) EP0687135B1 (de)
AT (1) ATE165708T1 (de)
DE (1) DE69502238T2 (de)
DK (1) DK0687135T3 (de)
ES (1) ES2116650T3 (de)
IT (1) IT1275608B1 (de)
SI (1) SI0687135T1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19715341C1 (de) * 1997-04-12 1998-10-15 Vossloh Schwabe Gmbh Elektronisches Vorschaltgerät mit automatischem Wiederanlauf
DE19715342C1 (de) * 1997-04-12 1998-12-17 Vossloh Schwabe Gmbh Vorschaltgerät für unabhängigen Parallelbetrieb von Niederdruck-Gasentladungslampen
AU745937B2 (en) * 1997-05-21 2002-04-11 Trestoto Pty Limited Dimmer circuits for discharge lamps
ES2142272B1 (es) * 1998-03-12 2000-11-16 Corunesa De Ahorro Energetico Sistema de regulacion y estabilizacion luminosa para alumbrado publico.
AUPQ787500A0 (en) * 2000-05-31 2000-06-22 Enersave Environmental Services Pty Ltd A power supply altering means
EP1318702A1 (de) * 2001-12-10 2003-06-11 Bob Hammer Systems Solutions S.A. Programmierbares System zur Stabilisierung und Regelung der Spannung insbesondere zur Verbesserung der Regelung von Lichtquellen wie Leuchtstofflampen und ähnlichen
FR2852188A1 (fr) * 2003-03-05 2004-09-10 Jean Pierre Reynaud Systeme de reduction de puissance pour les lampes a decharge alimentees par un ballast ferromagnetique commande par les informations tarifaires du reseau de distribution electrique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011095A (en) * 1959-07-02 1961-11-28 Honeywell Regulator Co Electric load control system
US4189664A (en) * 1977-10-05 1980-02-19 Hirschfeld Richard L Power control unit for automatic control of power consumption in a lighting load
FR2495877A1 (fr) * 1980-12-10 1982-06-11 Merot Sodex Sa Circuit d'alimentation pour tubes a decharge dans un gaz notamment pour enseignes lumineuses
US4431948A (en) * 1982-08-09 1984-02-14 Standun Controls, Inc. Apparatus for control of load power consumption
US4513224A (en) * 1982-09-22 1985-04-23 Pacific Power Control, Inc. Fluorescent-lighting-system voltage controller

Also Published As

Publication number Publication date
ATE165708T1 (de) 1998-05-15
IT1275608B1 (it) 1997-08-06
DE69502238D1 (de) 1998-06-04
ES2116650T3 (es) 1998-07-16
EP0687135A3 (de) 1996-11-13
SI0687135T1 (en) 1998-08-31
ITMI941207A0 (it) 1994-06-09
DE69502238T2 (de) 1998-08-13
ITMI941207A1 (it) 1995-12-09
DK0687135T3 (da) 1998-10-07
EP0687135A2 (de) 1995-12-13

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