EP1819206A2 - Vorrichtung zur gesteuerten Stromversorgung von Beleuchtungssystemen - Google Patents

Vorrichtung zur gesteuerten Stromversorgung von Beleuchtungssystemen Download PDF

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Publication number
EP1819206A2
EP1819206A2 EP07101948A EP07101948A EP1819206A2 EP 1819206 A2 EP1819206 A2 EP 1819206A2 EP 07101948 A EP07101948 A EP 07101948A EP 07101948 A EP07101948 A EP 07101948A EP 1819206 A2 EP1819206 A2 EP 1819206A2
Authority
EP
European Patent Office
Prior art keywords
solid state
control signals
central unit
lighting systems
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.)
Ceased
Application number
EP07101948A
Other languages
English (en)
French (fr)
Other versions
EP1819206A3 (de
Inventor
Luciano Ghergo
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.)
Gi & E Holding SpA
Original Assignee
Gi & E Holding SpA
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 Gi & E Holding SpA filed Critical Gi & E Holding SpA
Publication of EP1819206A2 publication Critical patent/EP1819206A2/de
Publication of EP1819206A3 publication Critical patent/EP1819206A3/de
Ceased 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

Definitions

  • the present invention relates to apparatuses for controlled supply of lighting systems, in particular including gas discharge lamps, according to prefixed energy saving programs.
  • the above mentioned type of lighting is the most efficient and widespread type of light source characterized by limited operation costs, simple operation principle, high lighting degree and possibility of long periods of continuous lighting.
  • the gas discharge lamp light sources have drawbacks, such as very a bad chromatic performance, a considerable energy consumption and, consequently, a high degree of light pollution of the environment.
  • This technical solution includes a multi-tap voltage autotransformer, functionally interposed between the group of lamps and the line for supply thereof, and an electronic control system, aimed at piloting the autotransformer, allowing a fairly good control of the value of the power applied to the lamps terminals.
  • the control system is programmed to supply different power levels, in relation to the time and the day of the year, so as to optimize the quantity of light emitted by the lamps, avoiding wastes; it can be remote controlled by means of e.g. GSM modem.
  • the main object of the present invention is to propose an apparatus for controlled supply of lighting systems, including in particular gas discharge lamps, which allows to prepare an efficient program of energy rationalization in any load condition, assuring the minimum standards required by the specific environment and reducing the light pollution.
  • Another object of the present invention is to propose an apparatus, which is able to change in a continuous way the supply tension applied to the terminals of the lamps in the lighting systems.
  • a further object of the present invention is to propose an apparatus, whose weight and dimensions are reduced, and which allows also to perform a remote-diagnosis the operation state of each single lamp, allowing in this way rapid localization of a faulty lamp and its substitution.
  • the proposed apparatus is defined between inlet section A and outlet section B, in the regions of which it is connected respectively to an alternating voltage V AC source, after the interposition of protection means of known type, and to a plurality of electrical loads L 1 , L 2 , ..., L j , ..., L n representing a lighting system, for example including gas discharge lamps.
  • the apparatus includes substantially: a device situated functionally at the relative inlet section A, aimed at the conversion of the alternating voltage V AC , for example a three phase voltage, and supplied by the public supply net in low voltage (rms line voltage value equal to 380 Volt), into a continuous voltage V DC of a given value, made available at its outlet terminals; a plurality of modulating units U 1 , U 2 , ..., U j , ..., U n , connected respectively to a plurality of lamps L 1 , L 2 , ..., L j , ..., L n and supplied with the continuous voltage V DC , with each unit U j including one or more solid state electronic switches E 1 , E 2 , ..., E j , E J A , E J B , E J C , E J D , ...,E n , which can be enabled or disabled to allow circulation of a relative electrical current I j through the corresponding lamp L j ; a central unit aimed at enabling
  • Figure 2 shows schematically and by way of an example a known circuit configuration of a generic modulating unit U j , suitably connected to a relative lamp L j , according to a bridge configuration, in case the modulation technique based on the pulse duration (PWM) has been used.
  • PWM pulse duration
  • the voltage V DC rectified by the converter device supplies the bridge, and the current I j applied to the lamp L j can assume a substantially sinusoidal shape with a variable amplitude enabling and disabling, for a prefixed time within each basic cycle time unit, the pair of switches E J A , E J B , so as to obtain a positive current half-wave, and the pair of switches E J C , E J D , to obtain the negative one,.
  • the above Figure does not show, for sake of simplicity, the relative low-pass filter, aimed at attenuating the harmonics of the current I j having higher frequency.
  • each generic lamp L j for example a sinusoidal current I j having variable amplitude and frequency, in a continuous way within a wide value interval.
  • lamps of the same type have different electrical characteristics due to their different age and fatigue degree and this can be detected by the analysis of the wave shape of the current I j circulating therein, in relation to the application of a prefixed wave shape of the voltage V j to the relevant terminals.
  • the analysis (for example performed automatically by a software) of the electrical characteristics of each lamp supplies indications concerning its operation state and the type of voltage wave shape, which is preferable to apply in order to optimize its operation.
  • the activation and deactivation of the switch E j for prefixed time intervals within a period of basic cycle allows, as it is known, to change the medium value of the voltage V j applied to the lamp L j .
  • a not shown filter attenuates all the harmonic elements of the current I j circulating through the lamp L j .
  • the present invention eliminates the bulky parts and mechanical parts subjected to wear and tear, such as the autotransformer and the contactors.
  • the apparatus includes only solid state elements, and consequently it is much more compact, reliable and obviously cheaper.
  • Each lamp L j belonging to the lighting system can be supplied in an independent way, applying the wave shapes of voltage V j , aimed at optimizing its light efficiency.
  • the measuring electronic instruments integrated with the apparatus, are able to detect the lamp electrical characteristics, which allows to use the lamps in optimal way, allowing also to define their possible malfunction or breaking (remote-diagnosis).
  • the above technical solution allows a continuous variation of the amplitude and the frequency (as well as of the wave shape more generally) of the voltage applied to the terminals of each generic lamp L j .

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
EP07101948A 2006-02-14 2007-02-08 Vorrichtung zur gesteuerten Stromversorgung von Beleuchtungssystemen Ceased EP1819206A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBO20060103 ITBO20060103A1 (it) 2006-02-14 2006-02-14 Apparecchiatura per l'alimentazione controllata di impianti di illuminazione.

Publications (2)

Publication Number Publication Date
EP1819206A2 true EP1819206A2 (de) 2007-08-15
EP1819206A3 EP1819206A3 (de) 2008-07-16

Family

ID=38055168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07101948A Ceased EP1819206A3 (de) 2006-02-14 2007-02-08 Vorrichtung zur gesteuerten Stromversorgung von Beleuchtungssystemen

Country Status (2)

Country Link
EP (1) EP1819206A3 (de)
IT (1) ITBO20060103A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011087677A1 (en) * 2010-01-13 2011-07-21 Masco Corporation Low voltage control systems and associated methods
US8080819B2 (en) 2004-07-08 2011-12-20 Philips Solid-State Lighting Solutions, Inc. LED package methods and systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29622825U1 (de) * 1996-03-29 1997-07-10 Lohmann-Werke GmbH & Co, 33604 Bielefeld Bestrahlungsgerät
WO2001010176A1 (en) * 1999-07-30 2001-02-08 Koninklijke Philips Electronics N.V. Modular high frequency ballast architecture
US20060002110A1 (en) * 2004-03-15 2006-01-05 Color Kinetics Incorporated Methods and systems for providing lighting systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29622825U1 (de) * 1996-03-29 1997-07-10 Lohmann-Werke GmbH & Co, 33604 Bielefeld Bestrahlungsgerät
WO2001010176A1 (en) * 1999-07-30 2001-02-08 Koninklijke Philips Electronics N.V. Modular high frequency ballast architecture
US20060002110A1 (en) * 2004-03-15 2006-01-05 Color Kinetics Incorporated Methods and systems for providing lighting systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8080819B2 (en) 2004-07-08 2011-12-20 Philips Solid-State Lighting Solutions, Inc. LED package methods and systems
WO2011087677A1 (en) * 2010-01-13 2011-07-21 Masco Corporation Low voltage control systems and associated methods

Also Published As

Publication number Publication date
EP1819206A3 (de) 2008-07-16
ITBO20060103A1 (it) 2007-08-15

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