EP3262901B1 - Dispositif d'actionnement pour un élément d'éclairage - Google Patents

Dispositif d'actionnement pour un élément d'éclairage Download PDF

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Publication number
EP3262901B1
EP3262901B1 EP15882940.8A EP15882940A EP3262901B1 EP 3262901 B1 EP3262901 B1 EP 3262901B1 EP 15882940 A EP15882940 A EP 15882940A EP 3262901 B1 EP3262901 B1 EP 3262901B1
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EP
European Patent Office
Prior art keywords
capacitor
bypass
operating device
voltage
bypass means
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.)
Active
Application number
EP15882940.8A
Other languages
German (de)
English (en)
Other versions
EP3262901A1 (fr
EP3262901A4 (fr
Inventor
Quentin LIN
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.)
Tridonic GmbH and Co KG
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Tridonic GmbH and Co KG
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Application filed by Tridonic GmbH and Co KG filed Critical Tridonic GmbH and Co KG
Publication of EP3262901A1 publication Critical patent/EP3262901A1/fr
Publication of EP3262901A4 publication Critical patent/EP3262901A4/fr
Application granted granted Critical
Publication of EP3262901B1 publication Critical patent/EP3262901B1/fr
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    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/26—Circuit arrangements for protecting against earth faults
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/385—Switched mode power supply [SMPS] using flyback topology
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/24—Circuit arrangements for protecting against overvoltage

Definitions

  • the present invention relates to an operating device for an illuminant according to the pre-characterizing part of claim 1 and relates to a method for compensating excessive high voltages at output terminals of an operating device according to the pre-characterizing part of claim 10.
  • a driving circuitry for driving the illuminant comprises a rectifier for rectifying an input AC voltage to a DC voltage and a converter for converting the DC voltage output by the rectifier into a working voltage for the illuminant is disclosed in WO 2014/085837 A2 .
  • the output terminals of the operating device are galvanically isolated from the input terminals via a transformer, wherein a radio interference suppression capacitor is connected to the primary winding and the secondary winding of the transformer.
  • the document US 2014/368124 A1 discloses drivers for driving light circuits with light emitting diodes, comprising isolation circuits with primary and secondary parts and guiding circuits for guiding common mode surge signals to reference potentials.
  • the isolation circuits may be designed to guide first parts of the common mode surge signals away from the light circuits and the guiding circuits may be designed to guide second parts of the common mode surge signals away from the light circuits, the second parts being smaller than the first parts.
  • the document JP 2010 080381 discloses an LED lighting device and a lighting fixture including the LED lighting device that prevent the propagation of noise to a power line without grounding a lighting unit, in which a light emitting diode is deposed.
  • the operating device for an illuminant comprises input terminals for being supplied with an AC voltage, output terminals, a driving circuitry for driving the illuminant, when connected to the output terminals, wherein bypass means that comprise at least one capacitor are provided to bypass a current from one of the output terminals to protective earth or a neutral terminal of the input terminals.
  • the operating device comprises a rectifier for rectifying the AC voltage to output a DC voltage, a converter for converting DC voltage output by the rectifier into a working voltage for the illuminant, a first capacitor connected between an output terminal of the rectifier and the protective earth and, preferably, adapted to compensate needle pulses generated by the rectifier, and a second capacitor connected between an output terminal of the rectifier and the one of the output terminals.
  • the converter can be an isolated switching mode power supply converter.
  • the isolated switching mode power supply converter is a LED converter.
  • bypass means can be connected in parallel to the second capacitor, wherein the capacity of the capacitor of the bypass means is greater than the capacity of the second capacitor.
  • bypass means can be connected in parallel to a serial connection of the first capacitor and the second capacitor, wherein the capacity of the capacitor of the bypass means is greater than the capacity of the second capacitor.
  • the bypass means is adapted to bypass the current when the voltage between the one of the output terminals and the protective earth and/or the neutral terminal exceeds a certain value.
  • bypass means can comprise at least one of a gas discharge tube, Zener diode, Transient Voltage Suppression diode and voltage-dependent resistor.
  • a lighting device comprises the operating device described above and at least one illuminant connected to the output terminals of the operating device.
  • a current from one of the output terminals is bypassed to protective earth and/or a neutral terminal of the input terminals in order to compensate the excessive high
  • the method can be performed by the operating device described above.
  • the lighting device which is represented in a simplified manner, comprises input terminals L, N for being supplied with an AC voltage, output terminals X1, X2, a rectifier 1 for rectifying the AC voltage to output a DC voltage, a converter 2 for converting DC voltage output by the rectifier 1 into a working voltage for the illuminant 3 connected to the output terminals X1, X2 and a bypass 4 formed of a capacitor C and connected to the output terminal X2 and the protective earth at the terminal PE.
  • the bypass 4 can be connected to the output terminal X1 instead of terminal X2 and, if neutral conductor is earthed, the bypass 4 can be connected to the input terminal N instead of terminal PE.
  • the rectifier 1 and the converter 2 can be combined in a driving circuitry, wherein the input terminals L, N, the output terminals X1, X2, the driving circuitry and the bypass 4 form an operating device according to the present invention.
  • the output side (output terminals X1, X2) is connected to the protective earth via the capacitor C.
  • a current is fed through the capacitor C to the terminal PE, i.e., a current output from the output terminal X2 is bypassed to the terminal PE, so that excessive high voltages between the output terminals X1, X2 of the operating device and the ground potential/protective earth may be suppressed.
  • FIG. 2 shows a second embodiment of the lighting device according to the present invention.
  • a first capacitor C1 and a second capacitor C2 are provided for compensating needle pulses generated by the rectifier 1 and for interference suppression, respectively.
  • the first capacitor C1 is connected between the output terminal X3 of the rectifier 1 and the terminal PE and the second capacitor C2 is connected between the output terminal X3 and the output terminal X2 of the converter 2.
  • the capacitor C of the bypass 4 is connected in parallel to the second capacitor C2.
  • the capacity of the capacitor C of the bypass means 4 is greater than the second capacitor C2 having a capacity of, for example, around 4,7nF, in order to compensate an excessive high voltage between the output terminal X2 and the terminal PE.
  • FIG. 3 shows a third embodiment of the lighting device according to the present invention.
  • the capacitor C of the bypass 4 is connected between the terminal PE and the output terminal X2, i.e., the capacitor C of the bypass means 4 is connected in parallel to the serial connection of the first capacitor C1 and the second capacitor C2.
  • the capacity of the capacitor C of the bypass means is greater than the capacity of the second capacitor C2 and, when the voltage between the output terminal X2 and the terminal PE increases strongly due to surges at the input terminals L, N, a current output from the output terminal X2 is bypassed to the terminal PE, so that excessive high voltages between the output terminal X2 and the terminal PE is suppressed.
  • bypass 4 Since the bypass 4 only must be activated in the case of excessive high voltages between the output terminal X2 and the terminal PE and usually activation is necessary only for a short period of time, switching or blocking means can be integrated in the bypass 4 that blocks or switchesoff the bypass 4 during normal operation of the lighting device in which no excessive high voltage is present.
  • the switching/blocking means 5 can be integrated in the bypass 4 in each of the first, second and third embodiments of the lighting device shown in Figs. 1 , 2 and 3 , respectively, wherein the capacitor C and a switching/blocking means 5 indicated by the dotted line in Figs. 1 , 2 and 3 are connected in series.
  • the switching/blocking means 5 can be implemented by using two Zener diodes, two Transient Voltage Suppression (TVS) diodes, voltage-dependent resistor (VDR), gas discharge tube (gas arrester) or combinations thereof and is configured to open the bypass, when the voltage between the output terminal X2 and the terminal PE exceeds a certain value or predetermined value, so that a current output from the output terminal X2 is bypassed to the terminal PE.
  • the switching/blocking means 5 prevents extensive DC currents flowing across the capacitor C of the bypass 4. This improves the electromagnetic compatibility (EMC).
  • FIG. 4 shows an embodiment of the operating device according to the present invention. All components of the circuit shown in FIG. 4 , including the rectifier 1, the converter 2, the first capacitor C1, the second capacitor C2 and the bypass 4 composed of the capacitor C and the switching/blocking means 5 formed of two Zener diodes ZD10 can be mounted on a single compact printed circuit board (not shown).
  • the rectifier 1 comprises capacitor CX2 connected in parallel to the input terminals L and N, a full-wave rectifier B connected to the input terminals L and N via inductors L1 and L2, respectively, and a smoothing capacitor C10 connected to the output of the full-wave rectifier B.
  • the converter 2 comprises an isolated transformer T, diodes D90 and D91 connected in parallel and a capacitor C92 connected parallel to the output terminals X1 and X2.
  • the secondary winding of the isolated transformer T is connected to the terminal X2 and the diodes D90 and D91.
  • One end of the primary winding of the isolated transformer T is connected to the full-wave rectifier B and the other end of the primary winding is connected to the terminal X3 via the switch S.
  • the first capacitor C1 is connected between the terminal PE and the output terminal X3 of the rectifier 1
  • the second capacitor C2 is connected between the output terminal X3 and the output terminal X2 of the converter 2 and a serial connection of the capacitor C and the Zener diodes ZD10 is connected in parallel to the second capacitor C2.
  • the rectifier 1 and the converter 2 shown in Figs. 1 to 3 can be built up as shown in FIG. 4 . Further, the rectifier 1 and the converter 2, the input terminals L, N, the output terminals X1, X2, and the bypass 4 shown in Figs. 1 to 3 form a operating device according to the present invention.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Claims (8)

  1. Dispositif de commande pour un illuminant comprenant
    des bornes d'entrée (L, N) destinées à être alimentées par une tension alternative ;
    des bornes de sortie (X1, X2) ;
    un ensemble de circuits d'attaque (1, 2) pour attaquer l'illuminant (3), lorsqu'il est connecté aux bornes de sortie (X1, X2), dans lequel
    des moyens de dérivation (4) sont prévus pour dériver un courant provenant de l'une des bornes de sortie (X1, X2) vers la terre de protection (PE) ou une borne neutre (N) des bornes d'entrée (L, N), dans lequel
    les moyens de dérivation (4) comprennent au moins un condensateur (C) ; et dans lequel l'ensemble de circuits d'attaque (1, 2) comprend
    un redresseur (1) pour redresser la tension alternative pour délivrer une tension continue ;
    un convertisseur (2) pour convertir la tension continue délivrée par le redresseur (1) en une tension de fonctionnement pour l'illuminant (3) ; et
    un premier condensateur (C1) connecté entre une borne de sortie (X3) du redresseur (1) et la terre de protection (PE) ;
    caractérisé en ce que
    l'ensemble de circuits d'attaque (1, 2) comprend un second condensateur (C2) connecté entre la borne de sortie (X3) du redresseur et ladite une des bornes de sortie (X1, X2).
  2. Dispositif de commande selon la revendication 1, dans lequel le convertisseur (2) est un convertisseur d'alimentation à découpage isolé.
  3. Dispositif de commande selon la revendication 2, dans lequel le convertisseur d'alimentation à découpage isolé est un convertisseur à DEL.
  4. Dispositif de commande selon la revendication 1, 2 ou 3, dans lequel
    dans le cas où les moyens de dérivation (4) sont prévus pour dériver le courant provenant de ladite une des bornes de sortie (X1, X2) vers la borne neutre (N), les moyens de dérivation (4) sont connectés en parallèle au second condensateur (C2 ) et la capacité du condensateur (C) des moyens de dérivation (4) est supérieure à la capacité du second condensateur (C2).
  5. Dispositif de commande selon la revendication 1, 2 ou 3, dans lequel
    dans le cas où les moyens de dérivation (4) sont prévus pour dériver le courant provenant de ladite une des bornes de sortie (X1, X2) vers la terre de protection (PE),
    les moyens de dérivation (4) sont connectés en parallèle à une connexion en série du premier condensateur (C1) et du second condensateur (C2) et la capacité du condensateur (C) des moyens de dérivation (4) est supérieure à la capacité du second condensateur (C2).
  6. Dispositif de commande selon l'une quelconque des revendications 1 à 3 ou 5, dans lequel
    des moyens de commutation ou de blocage (5) sont intégrés dans les moyens de dérivation (4) qui sont configurés pour bloquer ou désactiver les moyens de dérivation (4) pendant le fonctionnement normal de l'illuminant, dans lequel
    dans le cas où les moyens de dérivation (4) sont prévus pour dériver le courant provenant de ladite une des bornes de sortie (X1, X2) vers la terre de protection (PE), le moyen de dérivation (4) est adapté pour dériver le courant lorsque la tension entre ladite une des bornes de sortie (X1, X2) et la terre de protection (PE) dépasse une certaine valeur.
  7. Dispositif de commande selon la revendication 6, dans lequel
    les moyens de dérivation (4) comprennent au moins l'un d'un tube à décharge gazeuse, d'une diode Zener, d'une diode de suppression de tension transitoire et d'une résistance dépendante de la tension.
  8. Dispositif d'éclairage comprenant
    le dispositif de commande selon l'une quelconque des revendications 1 à 7 ; et
    au moins un illuminant (3) connecté aux bornes de sortie (X1, X2) du dispositif de commande.
EP15882940.8A 2015-02-26 2015-02-26 Dispositif d'actionnement pour un élément d'éclairage Active EP3262901B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/073305 WO2016134502A1 (fr) 2015-02-26 2015-02-26 Dispositif d'actionnement pour un élément d'éclairage

Publications (3)

Publication Number Publication Date
EP3262901A1 EP3262901A1 (fr) 2018-01-03
EP3262901A4 EP3262901A4 (fr) 2018-03-07
EP3262901B1 true EP3262901B1 (fr) 2022-09-14

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ID=56787828

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Application Number Title Priority Date Filing Date
EP15882940.8A Active EP3262901B1 (fr) 2015-02-26 2015-02-26 Dispositif d'actionnement pour un élément d'éclairage

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EP (1) EP3262901B1 (fr)
WO (1) WO2016134502A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4870534A (en) * 1988-09-02 1989-09-26 Harford Jack R Power line surge suppressor
KR101421215B1 (ko) * 2007-10-10 2014-07-24 삼성디스플레이 주식회사 인버터 및 이를 포함하는 액정 표시 장치
JP2009289684A (ja) * 2008-05-30 2009-12-10 Toshiba Lighting & Technology Corp 高圧放電灯点灯装置
JP2010080381A (ja) 2008-09-29 2010-04-08 Toshiba Lighting & Technology Corp Ｌｅｄ点灯装置および照明器具
JP4687826B2 (ja) * 2010-07-22 2011-05-25 パナソニック電工株式会社 電源別置型のｌｅｄ点灯装置
CN102752912B (zh) * 2012-06-01 2015-11-25 台达电子企业管理（上海）有限公司 一种led驱动电路
JP6008279B2 (ja) * 2012-07-24 2016-10-19 パナソニックＩｐマネジメント株式会社 電源装置、点灯装置およびそれを用いた照明器具並びに車両
EP2929756B1 (fr) 2012-12-06 2021-02-03 Tridonic GmbH & Co. KG Appareil de commande d'un moyen d'éclairage et procédé correspondant
CN203537601U (zh) 2013-06-17 2014-04-09 飞利浦(中国)投资有限公司 驱动器及包括驱动器的装置

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Publication number Publication date
WO2016134502A1 (fr) 2016-09-01
EP3262901A1 (fr) 2018-01-03
EP3262901A4 (fr) 2018-03-07

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