EP0687135A2 - Appareil pour réguler la tension d'alimentation destinée à des lampes à décharge - Google Patents
Appareil pour réguler la tension d'alimentation destinée à des lampes à décharge Download PDFInfo
- Publication number
- EP0687135A2 EP0687135A2 EP95108420A EP95108420A EP0687135A2 EP 0687135 A2 EP0687135 A2 EP 0687135A2 EP 95108420 A EP95108420 A EP 95108420A EP 95108420 A EP95108420 A EP 95108420A EP 0687135 A2 EP0687135 A2 EP 0687135A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit
- mains
- transformer
- accordance
- voltage
- 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
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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.
- 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.
- This device therefore constitutes the subject of the present invention defined as: a device for the regulation of electrical supply voltage to electric-discharge lamps, comprising:
- 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 (D1), which receives the 12 signals from the ADC (C5) and 12 preset signals (D2).
- a correction signal (F4) can also arrive at the comparator D1 to correct the preset signals D2.
- 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
- a device for the regulation of electrical supply voltage to electric discharge lamps comprising:
- the device of the present invention comprises:
- the alternative device for the regulation of electrical supply voltage to electric-discharge lamps forming the subject of the present invention may also comprise a by-pass circuit, which permits the switching of the load directly across the mains in the cases of fault or maintenance.
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)
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 |
---|---|---|---|
IT94MI001207A IT1275608B1 (it) | 1994-06-09 | 1994-06-09 | Dispositivo per la regolazione della tensione elettrica di alimentazione di lampade elettroluminescenti |
ITMI941207 | 1994-06-09 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0687135A2 true EP0687135A2 (fr) | 1995-12-13 |
EP0687135A3 EP0687135A3 (fr) | 1996-11-13 |
EP0687135B1 EP0687135B1 (fr) | 1998-04-29 |
Family
ID=11369087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95108420A Expired - Lifetime EP0687135B1 (fr) | 1994-06-09 | 1995-06-01 | Appareil pour réguler la tension d'alimentation destinée à des lampes à décharge |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0687135B1 (fr) |
AT (1) | ATE165708T1 (fr) |
DE (1) | DE69502238T2 (fr) |
DK (1) | DK0687135T3 (fr) |
ES (1) | ES2116650T3 (fr) |
IT (1) | IT1275608B1 (fr) |
SI (1) | SI0687135T1 (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0871348A1 (fr) * | 1997-04-12 | 1998-10-14 | Vossloh Schwabe GmbH | Ballast pour l'opération parallèle indépendante de lampes luminescentes à gaz de basse pression |
EP0871347A1 (fr) * | 1997-04-12 | 1998-10-14 | Vossloh Schwabe GmbH | Ballast à réamorçage automatique |
ES2142272A1 (es) * | 1998-03-12 | 2000-04-01 | Corunesa De Ahorro Energetico | Sistema de regulacion y estabilizacion luminosa para alumbrado publico. |
WO2001093645A1 (fr) * | 2000-05-31 | 2001-12-06 | Enersave Environmental Services Pty Ltd | Dispositif de modification d'alimentation en electricite |
AU745937B2 (en) * | 1997-05-21 | 2002-04-11 | Trestoto Pty Limited | Dimmer circuits for discharge lamps |
EP1318702A1 (fr) * | 2001-12-10 | 2003-06-11 | Bob Hammer Systems Solutions S.A. | Système programmable pour la stabilisation et régulation de la tension en particulier pour la commande améliorée de sources lumineuses utilisant des lampes fluorescentes et similaires |
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)
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 |
-
1994
- 1994-06-09 IT IT94MI001207A patent/IT1275608B1/it active IP Right Grant
-
1995
- 1995-06-01 SI SI9530079T patent/SI0687135T1/xx not_active IP Right Cessation
- 1995-06-01 EP EP95108420A patent/EP0687135B1/fr not_active Expired - Lifetime
- 1995-06-01 DK DK95108420T patent/DK0687135T3/da active
- 1995-06-01 ES ES95108420T patent/ES2116650T3/es not_active Expired - Lifetime
- 1995-06-01 AT AT95108420T patent/ATE165708T1/de not_active IP Right Cessation
- 1995-06-01 DE DE69502238T patent/DE69502238T2/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
None |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0871348A1 (fr) * | 1997-04-12 | 1998-10-14 | Vossloh Schwabe GmbH | Ballast pour l'opération parallèle indépendante de lampes luminescentes à gaz de basse pression |
EP0871347A1 (fr) * | 1997-04-12 | 1998-10-14 | Vossloh Schwabe GmbH | Ballast à réamorçage automatique |
US6011358A (en) * | 1997-04-12 | 2000-01-04 | Vossloh-Schwabe Gmbh | Ballast for independent parallel operation of low-pressure gas discharge lamps |
US6043612A (en) * | 1997-04-12 | 2000-03-28 | Vossloh-Schwabe Gmbh | Electronic ballast with automatic restarting |
AU745937B2 (en) * | 1997-05-21 | 2002-04-11 | Trestoto Pty Limited | Dimmer circuits for discharge lamps |
ES2142272A1 (es) * | 1998-03-12 | 2000-04-01 | Corunesa De Ahorro Energetico | Sistema de regulacion y estabilizacion luminosa para alumbrado publico. |
WO2001093645A1 (fr) * | 2000-05-31 | 2001-12-06 | Enersave Environmental Services Pty Ltd | Dispositif de modification d'alimentation en electricite |
EP1318702A1 (fr) * | 2001-12-10 | 2003-06-11 | Bob Hammer Systems Solutions S.A. | Système programmable pour la stabilisation et régulation de la tension en particulier pour la commande améliorée de sources lumineuses utilisant des lampes fluorescentes et similaires |
WO2003055283A1 (fr) * | 2001-12-10 | 2003-07-03 | Bob Hammer Systems Solutions S.A. | Systeme programmable pour stabiliser et reguler la tension, permettant en particulier une meilleure gestion d'unites d'eclairage comprenant des ampoules fluorescentes et analogue |
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 |
Also Published As
Publication number | Publication date |
---|---|
SI0687135T1 (en) | 1998-08-31 |
EP0687135B1 (fr) | 1998-04-29 |
IT1275608B1 (it) | 1997-08-06 |
DK0687135T3 (da) | 1998-10-07 |
EP0687135A3 (fr) | 1996-11-13 |
DE69502238T2 (de) | 1998-08-13 |
ITMI941207A0 (it) | 1994-06-09 |
ITMI941207A1 (it) | 1995-12-09 |
ES2116650T3 (es) | 1998-07-16 |
DE69502238D1 (de) | 1998-06-04 |
ATE165708T1 (de) | 1998-05-15 |
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