EP2929756A2 - Appareil de commande d'un moyen d'éclairage - Google Patents

Appareil de commande d'un moyen d'éclairage

Info

Publication number
EP2929756A2
EP2929756A2 EP13840118.7A EP13840118A EP2929756A2 EP 2929756 A2 EP2929756 A2 EP 2929756A2 EP 13840118 A EP13840118 A EP 13840118A EP 2929756 A2 EP2929756 A2 EP 2929756A2
Authority
EP
European Patent Office
Prior art keywords
operating device
interference suppression
radio interference
operating
switching 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.)
Granted
Application number
EP13840118.7A
Other languages
German (de)
English (en)
Other versions
EP2929756B1 (fr
Inventor
Dietmar Klien
Oliver Wynnyczenko
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
Original Assignee
Tridonic GmbH and Co KG
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
Priority claimed from ATGM461/2012U external-priority patent/AT13688U1/de
Priority claimed from DE102012023934.3A external-priority patent/DE102012023934B4/de
Application filed by Tridonic GmbH and Co KG filed Critical Tridonic GmbH and Co KG
Publication of EP2929756A2 publication Critical patent/EP2929756A2/fr
Application granted granted Critical
Publication of EP2929756B1 publication Critical patent/EP2929756B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix

Definitions

  • the invention relates to operating devices for lighting and methods for suppressing glow of a light source.
  • the invention relates to operating devices and methods in which the operating device has a radio interference suppression element.
  • Energy-saving luminaires can use light-emitting diodes (LEDs) as lighting means. Such bulbs can be excited by small currents to shine.
  • LEDs light-emitting diodes
  • the effect may occur that the lamp is still lit even in a switched-off state. This effect can occur, for example, as a so-called ghost light after switching off the lamp.
  • the lighting of the lamp in an off state is referred to here as glow.
  • One cause of such a glow may be, for example, in line capacitances or capacitive coupling within the operating device, but also in other capacitive or inductive couplings.
  • the object of the invention is to provide an operating device for a luminous means and a method with which the glow of a luminous means is effectively suppressed, i. can be reduced when the lamp is in an off state.
  • An operating device for a luminous means comprises a radio interference suppression element and a device for suppressing glare of the light source, which is coupled to the radio interference suppression element.
  • the device for suppressing glaring which can reduce or completely eliminate the glaring, is also referred to below as an anti-glimmer device.
  • the anti-glow device in the operating device can reduce the glare caused, for example, by the capacitances of the radio interference suppression element. Since the anti-glimmer device is provided in the operating device for the luminous means, the use of a separate unit for residual light suppression, which is connected, for example, between the operating device and the luminous means, is no longer necessary. Accordingly, the losses that can be caused by such a separate unit between the operating device and lighting means can be avoided.
  • the embodiment of the invention also allows dimming, for example by pulse width modulation.
  • the anti-glimmer device may be configured to influence a flow of current to or from the RFI element.
  • the anti-glimmer device can be set up to influence the flow of power to or from the radio-interference suppression element as a function of the operating state.
  • the anti-glare device may be configured to reduce current flow between the RFI element and a ground when the operating device is in a standby mode and / or when the light is turned off.
  • the anti-glare device may include controllable switching means connected between the RFI element and a ground.
  • the anti-glimmer device may be connected in series with the RFI element.
  • the switching means may comprise a transistor, for example a field effect transistor (FET).
  • the operating device may be set up such that the controllable switching means is switched operating state-dependent to an on state and / or an off state.
  • the operating device may be configured to switch the controllable switching means between the radio interference suppression element and the ground to an off state when the light is switched off and / or the operating device is in a standby mode.
  • the operating device may be configured such that the controllable switching means between the RFI element and the ground is switched to an on state when the light is switched on.
  • the controllable switching means may be coupled to a microcontroller, a controller or a processor or other semiconductor integrated circuit provided on a secondary side of the operating device.
  • the controllable switching means may be connected in such a way that it is selectively switched to an on state by the microcontroller, the controller, the processor or the other semiconductor integrated circuit. This ensures that the radio interference suppression element is switched off when the operating device is in a standby mode and the microcontroller is not powered on the secondary side.
  • the controllable switching means can be switched from a voltage of a secondary side of the operating device in an on state.
  • the operating device may have a primary side and a secondary side.
  • the radio interference suppression element can be a radio interference suppression capacitor between the primary side and the secondary side.
  • a circuit which is formed by the radio interference suppression capacitor can be interrupted by the anti-glimmer device.
  • such a circuit can be created by leakage currents occurring at the supply voltage frequency due to a coupling capacitance between an LED module and a grounded luminaire housing.
  • a corresponding circuit can be formed by the voltage between phase conductor and ground on a primary side of the operating device, by the RFI capacitor and a coupling capacitance between the LED module and ground.
  • the anti-glimmer device the RFI capacitor can be selectively switched off and this circuit can be interrupted in order to reduce or completely eliminate the glow of the lamp.
  • the anti-glow device can be arranged on the secondary side of the operating device.
  • the anti-glimmer device may be provided between a radio interference suppression capacitor and a ground of the secondary side of the operating device.
  • the operating device can be designed as an LED converter.
  • the operating device can be designed as an insulated LED converter.
  • a lighting system is specified.
  • the lighting system comprises an operating device according to an embodiment of the invention.
  • the lighting system comprises a supply source connected to the operating device and a lighting device connected to the operating device.
  • a method for suppressing glow of a light source is specified.
  • the light source is coupled to an operating device which has a radio interference suppression element.
  • the procedure includes an influence sen of a current flow to or from the RFI depending on an operating state of the operating device and / or dependent on a signal frequency.
  • a switching means may be controlled on a secondary side of the operating device to suppress a current flow to and from the RFI element depending on an operating condition.
  • the switching means may be arranged between the radio-interference element and a ground.
  • the RFI can be selectively switched on when the lamp is to be powered by the operating device with energy.
  • the radio interference suppression element can be selectively switched off when the light source is not to be supplied with energy.
  • Fig. 1 shows a lighting system with a control device for a lighting means according to an embodiment of the invention.
  • FIG. 2 is a block diagram of an operating device according to an embodiment.
  • FIG. Fig. 3 is a circuit diagram of an anti-glow device for an operating device according to an embodiment.
  • Fig. 4 is a circuit diagram of an operating device with an anti-glimmer device according to an embodiment.
  • Fig. 1 illustrates a lighting system with a lighting device for a lighting device according to an embodiment of the invention.
  • the illumination system comprises a supply source 10, for example a mains voltage source, and a luminaire 40 or a plurality of luminaires 40.
  • the luminaire 40 has an operating device 50 according to an embodiment and a luminous means 42.
  • the lighting means 42 may comprise one or more light-emitting diodes (LEDs). Accordingly, the operating device 50 can be designed as an LED converter.
  • the light-emitting means 42 can be implemented in various ways, for example by one or more inorganic LEDs, organic LEDs, other light sources or a combination of the aforementioned types of light bulbs.
  • the operating device 50 may comprise, for example, a power supply which generates a suitable voltage and / or a suitable current for operating the luminous means 42 from a supply voltage supplied to the luminaire 40.
  • a housing of the lamp 40 may be grounded.
  • the operating device 50 includes a radio interference suppression element and an anti-glare device for suppressing glare.
  • the anti-glimmer device can be reduced by operating state-dependent and / or frequency-dependent conduction of power to or from the RFI, a glow of the bulb 42 or completely eliminated when the lamp 40 is turned off and / or if the operating device 50 in a Standby mode is.
  • the anti-glow device may include a switching means. The switching means may be provided so that it is selectively switched to an on-state only to turn on an RFI suppression capacitor when the lamp 40 is turned on.
  • the switching means may be coupled to a secondary coil of a converter of the operating device.
  • FIG. 2 is a block diagram representation of an operating device 50 according to one embodiment.
  • the operating device 50 can operate as a constant current source or as a constant voltage source.
  • the operating device 50 may be an LED converter.
  • the operating device 50 may be an insulated LED converter.
  • the operating device 50 has a rectifier 51 on the input side.
  • the rectified supply voltage at the input of the operating device may be smoothed by a smoothing circuit 52 (also referred to as a power factor correction circuit or PFC circuit).
  • the smoothing circuit 52 can perform power factor correction to reduce the overall harmonic distortion (THD) and increase the power factor.
  • a DC-DC converter 53 may be provided by a ner control device, such as a microcontroller, controller, processor or other semiconductor integrated circuit on a primary side of the operating device to be controlled.
  • the DC-to-DC converter may include an LLC resonant converter, a flyback converter, or other converter topology.
  • the operating device may comprise a transformer with a primary-side coil 54 and a secondary-side coil 55 inductively coupled thereto.
  • the primary-side coil 54 is arranged on a primary side 61 of the operating device 50.
  • the secondary-side coil 55 is arranged on a secondary side 62 of the operating device 50.
  • the transformer can produce a galvanic isolation.
  • the secondary side 62 may be a safety extra-low voltage (SELV) side of the driver separated by a SELV barrier 60 or other galvanic isolation from the primary side 61.
  • SELV safety extra-low voltage
  • An output driver 56 may be coupled to the secondary side inductor 55 Outputs of the operating device 50 may be electrically conductively connected to the light-emitting means 42, for example to an LED module
  • the operating device 50 may also have, for example, only one DC-DC converter 53, the rectifier 51, the smoothing circuit 52 and the Output drivers 56 are optional elements whose function is also integrated into the DC-DC converter 53.
  • the operating device 50 has a radio interference suppression element.
  • the radio interference suppression element is designed as a radio interference suppression capacitor 59.
  • the radio interference suppression capacitor 59 is connected between the primary side 61 and the secondary side 62. Due to the radio interference suppression capacitor 59, at least in Nutz horr, when the lamp 40 is turned on, high-frequency interference signals are derived from the network and lamp lines. As a result, for example, electromagnetic interference can be reduced.
  • the high-frequency interference signals may be caused, for example, by the operation of one or more switching regulators, for example the DC-DC converter 53 or other components of the operating device 50.
  • the operating device 50 has an anti-glimmer device 70.
  • the anti-glare device 70 is coupled to the radio interference suppression element.
  • the anti-glimmer device 70 may be configured to influence, for example selectively block, currents between the radio interference suppression element and a ground potential PO. This can be done depending on an operating state of the lamp or the operating device. Alternatively or additionally, the current flow between the radio interference suppression element and a ground potential P0 can be blocked in a frequency-dependent manner.
  • the anti-glare device 70 may be configured to provide currents at least when the light 40 is turned off and / or the operating device 50 is in a standby mode a frequency of the supply voltage, which is supplied to the operating device, blocks or attenuates.
  • the anti-glimmer 70 may be configured so that at least when the lamp 40 is turned on, currents at a radio interference frequency between the RFI 59 and the ground potential PO may flow.
  • Embodiments of the anti-glare device 70 will be described in more detail with respect to operating devices according to embodiments with reference to FIGS. 3 to 5.
  • the anti-glimmer 70 includes a switching means 71.
  • the switching means 71 may be arranged on the secondary side 62 of the operating device.
  • the switching means 71 may comprise a transistor, for example a FET or another power switch.
  • the switching means 71 may conductively connect the RFI suppression capacitor 59 to a ground potential PO when it is switched to an on state.
  • the switching means 71 can be controlled so that a resistance of the switching means 71 is controlled depending on an operating condition.
  • the resistance of the switching means 71 can be selectively reduced when the lamp 40 is on and / or when the driver 50 is not in a standby mode and provides power to the lamp.
  • the spark suppression capacitor 59 is switched on in order to derive interference signals against the ground potential PO.
  • the resistance of the switching means 71 can be selectively increased when the lamp 40 is turned off and / or when the operating device 50 is in a standby mode. Thereby, the switching means 71 can be switched to an off state.
  • the spark suppression capacitor 59 can thus be switched off in order to suppress a glow of the light source.
  • the switching means 71 may be provided to be switched to the on-state depending on a voltage or a current at the output of the operating device.
  • a gate of the switching means 71 may be coupled to an operating voltage of the secondary side 62.
  • the switching means 71 may be provided to be controlled by a microcontroller, a controller, a processor, or other semiconductor integrated circuit.
  • a gate of the switching means 71 may be coupled to a microcontroller disposed on the secondary side 62 of the operating device 50.
  • the microcontroller may be coupled to the secondary side coil 55 to move therefrom Energy to be supplied. Accordingly, the microcontroller only controls the switching means 71 so that it is switched to an on state, even if the microcontroller of the secondary side is supplied with energy. It can thereby be ensured that the radio interference suppression element is selectively switched off when the light is switched off and / or the operating device is in a standby mode.
  • FIG. 4 shows a circuit arrangement of components of an operating device 50 according to an exemplary embodiment.
  • a converter with a flyback converter topology is shown for illustrative purposes.
  • Other converter types can be used.
  • a switching means 58 is operated to store energy in the primary side coil 54 (ie, charge the primary side coil 54) or to transfer energy from the primary side coil 54 to the secondary side coil 55 (ie, discharge the primary side coil 54).
  • the switching means 58 can be controlled by a microcontroller 69 on the primary side of the operating device 50.
  • a controller, a processor or another semiconductor integrated circuit may also be used.
  • a charging capacitor 66 can be charged via a diode 65, which is connected to the secondary-side coil 55. Current can be output to the light source via output terminals 67, 68 of the operating device 50.
  • the microcontroller 69 can control the switching means 58 such that a constant current for supplying LEDs is generated from a rectified supply voltage at inputs 63, 64 of the converter.
  • Another microcontroller 72 is provided on the secondary side of the operating device.
  • the further microcontroller 72 can be supplied with energy from an operating voltage of the secondary side.
  • the further microcontroller 72 may be configured to switch the switching means 71 from an off state to an on state when energy is supplied to the light source via the output terminals 67, 68.
  • the further microcontroller 72 may be arranged such that the switching means 71 is switched to an off state when the light is switched off and / or the operating device is in a standby mode.
  • the further microcontroller 72 is separated from the microcontroller 69 of the primary side and can execute further control functions. Instead of the microcontroller 72, it is also possible to use a controller, a processor or another semiconductor integrated circuit.
  • 5 is a flowchart of a method 90 according to one embodiment. The method 90 may be performed automatically by the operating device 50 according to one embodiment. In the method, a glow of a luminous means can be suppressed depending on an operating condition.
  • step 91 it is determined whether light is output via LEDs. For this purpose, it can be determined whether the lamp is turned on. An operating voltage can be monitored on a secondary side of the operating device. Other criteria can be checked to determine if glaring of the LEDs should be suppressed.
  • a radio interference suppression element such as an RFI suppression capacitor
  • a radio interference suppression element may be switched off when smoldering is to be suppressed. This can be achieved by virtue of the fact that a conduction path between the radio interference suppression element and a ground potential is high-resistance at least for signals at the supply voltage frequency.
  • a switching means between the radio interference suppression element and the ground potential can be switched to an off state.
  • the switching means may be configured to automatically transition to a blocking state when no control signal is applied to a gate of the switching means.
  • the switching means can be switched to the off state that no control signal for controlling the switching means is controlled.
  • the RFI can be switched on, if the glow of the lamp does not have to be suppressed, for example, when the lamp is turned on.
  • This can be achieved by virtue of the fact that a conduction path between the radio interference suppression element and a ground potential is low-resistance, at least for frequencies in a radio interference suppression area.
  • a switching means between the radio interference suppression element and the ground potential can be switched to an on state.
  • Operating devices and methods according to exemplary embodiments can be used in particular for operating lights that comprise LEDs, without being limited thereto.

Landscapes

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

Abstract

L'invention concerne un appareil de commande (50) d'un moyen d'éclairage, comprenant un élément antiparasite (59) et un dispositif anti-décharge lumineuse (70) permettant d'atténuer la décharge lumineuse du moyen d'éclairage. Le dispositif anti-décharge lumineuse (70) et l'élément antiparasite (59) sont accouplés.
EP13840118.7A 2012-12-06 2013-12-06 Appareil de commande d'un moyen d'éclairage et procédé correspondant Active EP2929756B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ATGM461/2012U AT13688U1 (de) 2012-12-06 2012-12-06 Betriebsgerät für Leuchtmittel
DE102012023934.3A DE102012023934B4 (de) 2012-12-06 2012-12-06 Betriebsgerät und Verfahren zum Unterdrücken von Glimmen eines Leuchtmittels
PCT/AT2013/000197 WO2014085837A2 (fr) 2012-12-06 2013-12-06 Appareil de commande d'un moyen d'éclairage

Publications (2)

Publication Number Publication Date
EP2929756A2 true EP2929756A2 (fr) 2015-10-14
EP2929756B1 EP2929756B1 (fr) 2021-02-03

Family

ID=50884087

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13840118.7A Active EP2929756B1 (fr) 2012-12-06 2013-12-06 Appareil de commande d'un moyen d'éclairage et procédé correspondant

Country Status (4)

Country Link
US (1) US20150305112A1 (fr)
EP (1) EP2929756B1 (fr)
CN (1) CN104838725A (fr)
WO (1) WO2014085837A2 (fr)

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DE102014221502A1 (de) * 2014-10-23 2016-04-28 Tridonic Gmbh & Co Kg Betriebsgerät für LEDs
EP3262901B1 (fr) * 2015-02-26 2022-09-14 Tridonic GmbH & Co. KG Dispositif d'actionnement pour un élément d'éclairage
JP6353992B1 (ja) * 2015-06-04 2018-07-04 フィリップス ライティング ホールディング ビー ヴィ グロー低減が改善されたｌｅｄ光源
WO2018099791A1 (fr) * 2016-11-29 2018-06-07 Philips Lighting Holding B.V. Circuit de conversion entre un ballast fluorescent et une del.
DE102018132656A1 (de) * 2018-12-18 2020-06-18 Tridonic Gmbh & Co Kg Stromsensor und Messverfahren zur geschalteten Erfassung eines Wechselstroms

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Also Published As

Publication number Publication date
EP2929756B1 (fr) 2021-02-03
WO2014085837A3 (fr) 2014-09-04
WO2014085837A2 (fr) 2014-06-12
US20150305112A1 (en) 2015-10-22
CN104838725A (zh) 2015-08-12

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