EP2929756B1 - Operating device for illuminant and related method - Google Patents

Operating device for illuminant and related method Download PDF

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Publication number
EP2929756B1
EP2929756B1 EP13840118.7A EP13840118A EP2929756B1 EP 2929756 B1 EP2929756 B1 EP 2929756B1 EP 13840118 A EP13840118 A EP 13840118A EP 2929756 B1 EP2929756 B1 EP 2929756B1
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EP
European Patent Office
Prior art keywords
operating device
radio interference
interference suppression
switching means
suppression element
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EP13840118.7A
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German (de)
French (fr)
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EP2929756A2 (en
Inventor
Dietmar Klien
Oliver Wynnyczenko
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Tridonic GmbH and Co KG
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Tridonic GmbH and Co KG
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Publication date
Priority claimed from DE102012023934.3A external-priority patent/DE102012023934B4/en
Priority claimed from ATGM461/2012U external-priority patent/AT13688U1/en
Application filed by Tridonic GmbH and Co KG filed Critical Tridonic GmbH and Co KG
Publication of EP2929756A2 publication Critical patent/EP2929756A2/en
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Publication of EP2929756B1 publication Critical patent/EP2929756B1/en
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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
    • 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 means and methods for suppressing glowing of a lighting means.
  • the invention relates in particular to operating devices and methods in which the operating device has a radio interference suppression element.
  • Energy-saving lights can use light-emitting diodes (LEDs) as light sources. Such lamps can also be excited to glow by small currents. When using lights with light-emitting diodes as a light source, the effect can occur that the light is still lit when it is switched off. This effect can occur, for example, as so-called ghost light after the lamp has been switched off. In general, the lighting of the lamp when it is switched off is referred to here as glowing.
  • One cause of such a glow can be, for example, line capacitances or a capacitive coupling within the operating device, but also other capacitive or inductive couplings. From the pamphlet US20070267984 a capacitance as a radio interference element between the primary side and the secondary side of an operating device is already known.
  • the object of the invention is to provide an operating device for a lamp and a method with which the glow of a lamp can be effectively suppressed, i.e. reduced, when the lamp is in a switched-off state.
  • An operating device for a lighting means comprises a radio interference suppression element and a device for suppressing glowing of the lighting means, which is coupled to the radio interference suppression element.
  • the device for suppressing glowing which can reduce the glowing or completely eliminate it, is also referred to below as an anti-glowing device.
  • the anti-glow device in the operating device can reduce glowing, which is caused, for example, by capacitances in the radio interference suppression element. Since the anti-glow device is provided in the operating device for the lighting means, the use of a separate unit for residual light suppression, which is connected, for example, between the operating device and the lighting means, is no longer necessary. Accordingly, the losses that can be caused by such a separate unit between the operating device and the lighting means can also be avoided.
  • the embodiment according to the invention also allows dimming, for example by means of pulse width modulation.
  • the anti-glow device can be set up to influence a current flow to or from the radio interference suppression element.
  • the anti-glow device can be set up to influence the current flow to or from the radio interference suppression element as a function of the operating state.
  • the anti-glow device can be set up to reduce a current flow between the radio interference suppression element and a ground when the operating device is in a standby mode and / or when the lamp is switched off.
  • the anti-glow device can comprise a controllable switching means which is connected between the radio interference suppression element and a ground.
  • the anti-glow device can be connected in series with the radio interference suppression element.
  • the switching means can comprise a transistor, for example a field effect transistor (FET).
  • the operating device can be set up in such a way that the controllable switching means is switched into an on-state and / or an off-state as a function of the operating state.
  • the operating device can be set up in such a way that the controllable switching means between the radio interference suppression element and the ground is switched to an off state when the lamp is switched off and / or the operating device is in a standby mode.
  • the operating device can be set up such that the controllable switching means between the radio interference suppression element and the ground is switched to an on state when the lamp is switched on.
  • the controllable switching means can be coupled to a microcontroller, a controller or a processor or another integrated semiconductor circuit which is provided on a secondary side of the operating device.
  • the controllable switching means can 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 integrated semiconductor circuit. This can ensure that the radio interference suppression element is switched off when the operating device is in a standby mode and the microcontroller on the secondary side is not supplied with energy.
  • the controllable switching means can be switched to an on state by a voltage on a secondary side of the operating device.
  • the operating device has a primary side and a secondary side.
  • the radio interference suppression element is a radio interference suppression capacitor between the primary side and the secondary side.
  • the anti-glow device can interrupt a circuit that is formed by the radio interference suppression capacitor.
  • a circuit can arise in that leakage currents occur at the supply voltage frequency due to a coupling capacitance between an LED module and a grounded lamp housing.
  • a corresponding circuit can be formed by the voltage between the phase conductor and ground on a primary side of the operating device, by the radio interference suppression capacitor and a coupling capacitance between the LED module and ground.
  • the anti-glow device can be arranged on the secondary side of the operating device.
  • the anti-glow device is between a radio interference suppression capacitor and a ground on 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 isolated LED converter.
  • a lighting system comprises an operating device according to an exemplary embodiment of the invention.
  • the lighting system comprises a supply source connected to the operating device and a lighting means connected to the operating device.
  • a method for suppressing glowing of a luminous means is specified.
  • the lamp is coupled to an operating device that has a radio interference suppression element.
  • the method includes influencing a current flow to or from the radio interference suppression element depending on an operating state of the operating device and / or depending on a signal frequency.
  • a switching means on a secondary side of the operating device is controlled in order to suppress a current flow to and from the radio interference suppression element as a function of an operating state.
  • the switching means is arranged between the radio interference suppression element and a ground.
  • the radio interference suppression element can then be switched on selectively by the switching means when the lighting means is to be supplied with energy by the operating device.
  • the radio interference suppression element can then be switched off selectively when the lamp is not to be supplied with energy.
  • the method can be carried out with the operating device according to one exemplary embodiment.
  • the operating device can be an LED converter.
  • Fig. 1 illustrates a lighting system with an operating device for a lighting means according to an embodiment of the invention.
  • the lighting system comprises a supply source 10, for example a mains voltage source, and a lamp 40 or a plurality of lamps 40.
  • the lamp 40 has an operating device 50 according to an exemplary embodiment and a lamp 42.
  • the lighting means 42 can comprise one or more light-emitting diodes (LEDs).
  • the operating device 50 can accordingly be designed as an LED converter.
  • the lighting means 42 can be implemented in various ways, for example by one or more inorganic LEDs, organic LEDs, other lighting means or a combination of the named types of lighting means.
  • the operating device 50 is used to operate the respective lighting means 42 in a suitable manner.
  • the operating device 50 can include, for example, a power supply unit which generates a suitable voltage and / or a suitable current for operating the lighting means 42 from a supply voltage supplied to the lamp 40.
  • a housing of the lamp 40 can be grounded.
  • the operating device 50 has a radio interference suppression element and an anti-glow device for suppressing glowing.
  • the anti-glow device by conducting current to or from the radio interference suppression element depending on the operating state and / or frequency, glowing of the illuminant 42 can be reduced or completely eliminated when the lamp 40 is switched off and / or when the operating device 50 is in a standby mode. Mode is.
  • the anti-glow device can comprise a switching means.
  • the switching means can be provided in such a way that it is only switched selectively to an on state in order to connect a radio interference suppression capacitor when the lamp 40 is switched on.
  • the switching means can be coupled to a secondary coil of a converter of the operating device.
  • FIG. 3 is a block diagram representation of an operating device 50 according to an embodiment.
  • the operating device 50 can operate as a constant current source or as a constant voltage source.
  • the operating device 50 can be an LED converter.
  • the operating device 50 can be an isolated 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 can 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 a power factor correction in such a way that the total harmonic distortion (THD) is reduced and the power factor is increased.
  • a DC-DC converter 53 can be of a Control device, for example a microcontroller, controller, processor or another integrated semiconductor circuit on a primary side of the operating device are controlled.
  • the DC-DC converter can have an LLC resonant converter, a flyback converter, or another converter topology.
  • the operating device can comprise a transformer with a primary-side coil 54 and a secondary-side coil 55 inductively coupled therewith.
  • 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 galvanic isolation.
  • the secondary side 62 can be a SELV (“safety extra-low voltage”) side of the operating device, which is separated from the primary side 61 by a SELV barrier 60 or other galvanic isolation.
  • An output driver 56 can be coupled to the secondary-side coil 55. Outputs of the operating device 50 can be connected in an electrically conductive manner to the lighting means 42, for example to an LED module.
  • the operating device 50 can, for example, also have only one DC-DC converter 53; the rectifiers 51, the smoothing circuit 52 and the output driver 56 are optional elements whose functions are also integrated in 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.
  • the radio interference suppression capacitor 59 can divert high-frequency interference signals from the mains and lamp lines, at least when the lamp 40 is switched on. This can reduce electromagnetic interference, for example.
  • the high-frequency interference signals can be caused, for example, from the operation of one or more switching regulators, for example the direct current-direct current converter 53 or other components of the operating device 50.
  • the operating device 50 has an anti-glow device 70.
  • the anti-glow device 70 is coupled to the radio interference suppression element.
  • the anti-glow device 70 can be set up to influence currents between the radio interference suppression element and a ground potential P0, for example to selectively block them. This can take place as a function of an operating state of the luminaire or the operating device. Alternatively or additionally, the current flow between the radio interference suppression element and a ground potential P0 can be blocked as a function of the frequency.
  • the anti-glow device 70 can be designed in such a way that it flows in at least when the lamp 40 is switched off and / or the operating device 50 is in a standby mode a frequency of the supply voltage that is fed to the operating device, blocks or attenuates.
  • the anti-glow device 70 can be configured such that at least when the lamp 40 is switched on, currents can flow at a radio interference suppression frequency between the radio interference suppression element 59 and the ground potential P0.
  • FIG. 4 is a circuit diagram of an anti-glow device 70 in an operating device according to an exemplary embodiment.
  • the anti-glow device 70 comprises a switching means 71.
  • the switching means 71 can be arranged on the secondary side 62 of the operating device.
  • the switching means 71 can comprise a transistor, for example an FET or another power switch.
  • the switching means 71 can conductively connect the radio interference suppression capacitor 59 to a ground potential P0 when it is switched to an on state.
  • the switching means 71 can be controlled such that a resistance of the switching means 71 is controlled as a function of an operating state. The resistance of the switching means 71 can then be selectively reduced when the lamp 40 is switched on and / or when the operating device 50 is not in a standby mode and provides energy to the lighting means. As a result, the radio interference capacitor 59 is switched on in order to divert interference signals against the ground potential P0. The resistance of the switching means 71 can be selectively increased when the lamp 40 is switched off and / or when the operating device 50 is in a standby mode. As a result, the switching means 71 can be switched to an off state. The radio interference capacitor 59 can be switched off in order to suppress a glowing of the lighting means.
  • the switching means 71 can be provided in such a way that it is switched to the on state as a function of a voltage or a current at the output of the operating device.
  • a gate of the switching means 71 can be coupled to an operating voltage of the secondary side 62.
  • the switching means 71 can be provided in such a way that it is controlled by a microcontroller, a controller, a processor or another integrated semiconductor circuit.
  • a gate of the switching means 71 can be coupled to a microcontroller which is arranged on the secondary side 62 of the operating device 50.
  • the microcontroller can be coupled to the secondary-side coil 55 in order to be able to use it Energy to be supplied.
  • the microcontroller controls the switching means 71 only in such a way that it is switched to an on state when the microcontroller on the secondary side is also supplied with energy. This can ensure that the radio interference suppression element is selectively switched off when the lamp 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 embodiment.
  • a converter with a flyback converter topology is shown for the purpose of illustration. Other types of transducers can be used.
  • a switching means 58 is actuated to store energy in the primary-side coil 54 (ie to charge the primary-side coil 54) or to transfer energy from the primary-side coil 54 to the secondary-side coil 55 (ie to 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. Instead of a microcontroller 69, a controller, a processor or another integrated semiconductor circuit can also be used.
  • a charging capacitor 66 can be charged on the secondary side via a diode 65 which is connected to the secondary-side coil 55. Current can be output to the lighting means via output connections 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 on the secondary side.
  • the further microcontroller 72 can be set up to switch the switching means 71 from an off state to an on state when energy is provided for the lighting means via the output connections 67, 68.
  • the further microcontroller 72 can be set up in such a way that the switching means 71 is switched to an off state when the lamp is switched off and / or the operating device is in a standby mode.
  • the further microcontroller 72 is separate from the microcontroller 69 on the primary side and can carry out further control functions. Instead of the microcontroller 72, a controller, a processor or another integrated semiconductor circuit can also be used.
  • Fig. 5 Figure 3 is a flow diagram of a method 90 according to an embodiment.
  • the method 90 can be carried out automatically by the operating device 50 according to one exemplary embodiment.
  • a glow of a light source can be suppressed as a function of an operating state.
  • step 91 it is determined whether there is light output via LEDs. To do this, it can be determined whether the lamp is switched on. An operating voltage on a secondary side of the operating device can be monitored. Other criteria can be checked to determine whether the LEDs should be suppressed from glowing.
  • a radio interference suppression element for example a radio interference suppression capacitor
  • a radio interference suppression element can be switched off if glowing is to be suppressed.
  • This can be achieved in that a line 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 can be designed in such a way that it automatically changes to a blocking state if no control signal is applied to a gate of the switching means.
  • the switching means can be switched to the off state in that no control signal for controlling the switching means is output.
  • the radio interference suppression element can be switched on if the glowing of the lighting means does not have to be suppressed, for example if the lamp is switched on.
  • This can be achieved in that a conduction path between the radio interference suppression element and a ground potential has a 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.
  • radio interference suppression element is designed as a capacitor
  • other configurations and / or arrangements of the radio interference suppression element can also be used.
  • Operating devices and methods according to exemplary embodiments can in particular be used for operating lights that include LEDs, without being restricted thereto.

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

Description

Die Erfindung betrifft Betriebsgeräte für Leuchtmittel und Verfahren zum Unterdrücken von Glimmen eines Leuchtmittels. Die Erfindung betrifft insbesondere Betriebsgeräte und Verfahren, bei denen das Betriebsgerät ein Funkentstörelement aufweist.The invention relates to operating devices for lighting means and methods for suppressing glowing of a lighting means. The invention relates in particular to operating devices and methods in which the operating device has a radio interference suppression element.

Energiesparende Leuchten können Leuchtdioden (LEDs) als Leuchtmittel verwenden. Derartige Leuchtmittel können auch durch kleine Ströme zum Leuchten angeregt werden. Bei Einsatz von Leuchten mit Leuchtdioden als Leuchtmittel kann der Effekt auftreten, dass die Leuchte auch in einem ausgeschalteten Zustand noch leuchtet. Dieser Effekt kann beispielsweise als so genanntes Geisterlicht nach dem Ausschalten der Leuchte auftreten. Allgemein wird das Leuchten des Leuchtmittels in einem ausgeschalteten Zustand hier als Glimmen bezeichnet. Eine Ursache für ein derartiges Glimmen kann beispielsweise in Leitungskapazitäten oder einer kapazitiven Kopplung innerhalb des Betriebsgerätes, aber auch in anderen kapazitiven oder induktiven Kopplungen liegen. Aus der Druckschrift US20070267984 ist bereits eine Kapazität als Funkstörelement zwischen der Primärseite und der Sekundärseite eines Betriebsgeräts bekannt.Energy-saving lights can use light-emitting diodes (LEDs) as light sources. Such lamps can also be excited to glow by small currents. When using lights with light-emitting diodes as a light source, the effect can occur that the light is still lit when it is switched off. This effect can occur, for example, as so-called ghost light after the lamp has been switched off. In general, the lighting of the lamp when it is switched off is referred to here as glowing. One cause of such a glow can be, for example, line capacitances or a capacitive coupling within the operating device, but also other capacitive or inductive couplings. From the pamphlet US20070267984 a capacitance as a radio interference element between the primary side and the secondary side of an operating device is already known.

Während ein Glimmen der ausgeschalteten Leuchte in manchen Anwendungen erwünscht sein kann, kann es häufig als unerwünscht empfunden werden.While a glow when the lamp is switched off may be desirable in some applications, it can often be perceived as undesirable.

Aufgabe der Erfindung ist, ein Betriebsgerät für ein Leuchtmittel und ein Verfahren bereitzustellen, mit dem das Glimmen eines Leuchtmittels wirksam unterdrückt, d.h. reduziert, werden kann, wenn sich die Leuchte in einem ausgeschalteten Zustand befindet.The object of the invention is to provide an operating device for a lamp and a method with which the glow of a lamp can be effectively suppressed, i.e. reduced, when the lamp is in a switched-off state.

Diese Aufgabe wird gelöst durch ein Betriebsgerät, ein Verfahren und ein Beleuchtungssystem mit den in den unabhängigen Ansprüchen angegebenen Merkmalen. Die abhängigen Patentansprüche definieren Weiterbildungen der Erfindung.This object is achieved by an operating device, a method and a lighting system with the features specified in the independent claims. The dependent claims define developments of the invention.

Ein Betriebsgerät für ein Leuchtmittel nach einem Ausführungsbeispiel umfasst ein Funkentstörelement und eine Einrichtung zum Unterdrücken von Glimmen des Leuchtmittels, die mit dem Funkentstörelement gekoppelt ist. Die Einrichtung zum Unterdrücken von Glimmen, die das Glimmen reduzieren oder vollständig eliminieren kann, wird im Folgenden auch als Anti-Glimm-Einrichtung bezeichnet.An operating device for a lighting means according to one embodiment comprises a radio interference suppression element and a device for suppressing glowing of the lighting means, which is coupled to the radio interference suppression element. The device for suppressing glowing, which can reduce the glowing or completely eliminate it, is also referred to below as an anti-glowing device.

Durch die Anti-Glimm-Einrichtung in dem Betriebsgerät kann Glimmen, das beispielsweise durch Kapazitäten des Funkentstörelements verursacht wird, verringert werden. Da die Anti-Glimm-Einrichtung in dem Betriebsgerät für das Leuchtmittel vorgesehen ist, ist die Verwendung einer separaten Einheit zur Restlichtunterdrückung, die beispielsweise zwischen Betriebsgerät und Leuchtmittel geschaltet ist, nicht mehr erforderlich. Entsprechend können auch die Verluste, die durch eine derartige separate Einheit zwischen Betriebsgerät und Leuchtmittel hervorgerufen werden können, vermieden werden. Die erfindungsgemäße Ausgestaltung erlaubt auch ein Dimmen, beispielsweise durch Pulsweitenmodulation.The anti-glow device in the operating device can reduce glowing, which is caused, for example, by capacitances in the radio interference suppression element. Since the anti-glow device is provided in the operating device for the lighting means, the use of a separate unit for residual light suppression, which is connected, for example, between the operating device and the lighting means, is no longer necessary. Accordingly, the losses that can be caused by such a separate unit between the operating device and the lighting means can also be avoided. The embodiment according to the invention also allows dimming, for example by means of pulse width modulation.

Die Anti-Glimm-Einrichtung kann eingerichtet sein, um einen Stromfluss zu oder von dem Funkentstörelement zu beeinflussen. Die Anti-Glimm-Einrichtung kann eingerichtet sein, um den Stromfluss zu oder von dem Funkentstörelement betriebszustandsabhängig zu beeinflussen. Die Anti-Glimm-Einrichtung kann eingerichtet sein, um einen Stromfluss zwischen dem Funkentstörelement und einer Masse zu verringern, wenn sich das Betriebsgerät in einem Standby-Modus befindet und/oder wenn die Leuchte ausgeschaltet ist.The anti-glow device can be set up to influence a current flow to or from the radio interference suppression element. The anti-glow device can be set up to influence the current flow to or from the radio interference suppression element as a function of the operating state. The anti-glow device can be set up to reduce a current flow between the radio interference suppression element and a ground when the operating device is in a standby mode and / or when the lamp is switched off.

Die Anti-Glimm-Einrichtung kann ein steuerbares Schaltmittel umfassen, das zwischen das Funkentstörelement und eine Masse geschaltet sein. Die Anti-Glimm-Einrichtung kann in Serie zu dem Funkentstörelement geschaltet sein. Das Schaltmittel kann einen Transistor, beispielsweise einen Feldeffekttransistor (FET), umfassen.The anti-glow device can comprise a controllable switching means which is connected between the radio interference suppression element and a ground. The anti-glow device can be connected in series with the radio interference suppression element. The switching means can comprise a transistor, for example a field effect transistor (FET).

Das Betriebsgerät kann so eingerichtet sein, dass das steuerbare Schaltmittel betriebszustandsabhängig in einen Ein-Zustand und/oder einen Aus-Zustand geschaltet wird. Das Betriebsgerät kann so eingerichtet sein, dass das steuerbare Schaltmittel zwischen dem Funkentstörelement und der Masse in einen Aus-Zustand geschaltet wird, wenn die Leuchte ausgeschaltet ist und/oder sich das Betriebsgerät in einem Standby-Modus befindet. Das Betriebsgerät kann so eingerichtet sein, dass das steuerbare Schaltmittel zwischen dem Funkentstörelement und der Masse in einen Ein-Zustand geschaltet wird, wenn die Leuchte eingeschaltet ist.The operating device can be set up in such a way that the controllable switching means is switched into an on-state and / or an off-state as a function of the operating state. The operating device can be set up in such a way that the controllable switching means between the radio interference suppression element and the ground is switched to an off state when the lamp is switched off and / or the operating device is in a standby mode. The operating device can be set up such that the controllable switching means between the radio interference suppression element and the ground is switched to an on state when the lamp is switched on.

Das steuerbare Schaltmittel kann mit einem Mikrocontroller, einem Controller oder einem Prozessor oder einer anderen integrierten Halbleiterschaltung gekoppelt sein, der bzw. die an einer Sekundärseite des Betriebsgeräts vorgesehen ist. Das steuerbare Schaltmittel kann so verschaltet sein, dass es von dem Mikrocontroller, dem Controller, dem Prozessor oder der anderen integrierten Halbleiterschaltung selektiv in einen Ein-Zustand geschaltet wird Dadurch kann sichergestellt werden, dass das Funkentstörelement weggeschaltet wird, wenn das Betriebsgerät in einem Standby-Modus ist und der Mikrocontroller auf der Sekundärseite nicht mit Energie versorgt wird. Alternativ oder zusätzlich kann das steuerbare Schaltmittel von einer Spannung einer Sekundärseite des Betriebsgeräts in einen Ein-Zustand geschaltet zu werden.The controllable switching means can be coupled to a microcontroller, a controller or a processor or another integrated semiconductor circuit which is provided on a secondary side of the operating device. The controllable switching means can 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 integrated semiconductor circuit. This can ensure that the radio interference suppression element is switched off when the operating device is in a standby mode and the microcontroller on the secondary side is not supplied with energy. Alternatively or additionally, the controllable switching means can be switched to an on state by a voltage on a secondary side of the operating device.

Im Standby-Modus des Betriebsgeräts können Signale bei der Versorgungsspannungsfrequenz gesperrt werden, die zu einem unerwünschten Glimmen führen können.In the standby mode of the control gear, signals can be blocked at the supply voltage frequency, which can lead to an undesired glow.

Das Betriebsgerät weist eine Primärseite und eine Sekundärseite auf. Das Funkentstörelement ist ein Funkentstörkondensator zwischen der Primärseite und der Sekundärseite.The operating device has a primary side and a secondary side. The radio interference suppression element is a radio interference suppression capacitor between the primary side and the secondary side.

In diesem Fall kann durch die Anti-Glimm-Einrichtung ein Stromkreis unterbrochen werden, der durch den Funkentstörkondensators gebildet wird. Beispielsweise kann ein derartiger Stromkreis dadurch entstehen, dass durch eine Koppelkapazität zwischen einem LED-Modul und einem geerdeten Leuchtengehäuse Ableitströme bei der Versorgungsspannungsfrequenz auftreten. Ein entsprechender Stromkreis kann gebildet werden durch die Spannung zwischen Phasenleiter und Masse an einer Primärseite des Betriebsgeräts, durch den Funkentstörkondensator und eine Koppelkapazität zwischen dem LED-Modul und Erde. Durch die Anti-Glimm-Einrichtung kann der Funkentstörkondensator selektiv weggeschaltet und dieser Stromkreis unterbrochen werden, um das Glimmen des Leuchtmittels zu verringern oder vollständig zu eliminieren.In this case, the anti-glow device can interrupt a circuit that is formed by the radio interference suppression capacitor. For example, such a circuit can arise in that leakage currents occur at the supply voltage frequency due to a coupling capacitance between an LED module and a grounded lamp housing. A corresponding circuit can be formed by the voltage between the phase conductor and ground on a primary side of the operating device, by the radio interference suppression capacitor and a coupling capacitance between the LED module and ground. By means of the anti-glow device, the radio interference suppression capacitor can be selectively switched off and this circuit interrupted in order to reduce or completely eliminate the glow of the lamp.

Die Anti-Glimm-Einrichtung kann auf der Sekundärseite des Betriebsgeräts angeordnet sein. Die Anti-Glimm-Einrichtung ist zwischen einem Funkentstörkondensator und einer Masse der Sekundärseite des Betriebsgeräts.The anti-glow device can be arranged on the secondary side of the operating device. The anti-glow device is between a radio interference suppression capacitor and a ground on the secondary side of the operating device.

Das Betriebsgerät kann als LED-Konverter ausgestaltet sein. Das Betriebsgerät kann als isolierter LED-Konverter ausgestaltet sein.The operating device can be designed as an LED converter. The operating device can be designed as an isolated LED converter.

Nach einem weiteren Ausführungsbeispiel wird ein Beleuchtungssystem angegeben. Das Beleuchtungssystem umfasst ein Betriebsgerät nach einem Ausführungsbeispiel der Erfindung. Das Beleuchtungssystem umfasst eine mit dem Betriebsgerät verbundene Versorgungsquelle sowie ein mit dem Betriebsgerät verbundenes Leuchtmittel.According to a further exemplary embodiment, a lighting system is specified. The lighting system comprises an operating device according to an exemplary embodiment of the invention. The lighting system comprises a supply source connected to the operating device and a lighting means connected to the operating device.

Nach einem weiteren Ausführungsbeispiel wird ein Verfahren zum Unterdrückung von Glimmen eines Leuchtmittels angegeben. Das Leuchtmittel ist mit einem Betriebsgerät gekoppelt, das ein Funkentstörelement aufweist. Das Verfahren umfasst ein Beeinflussen eines Stromflusses zu oder von dem Funkentstörelement abhängig von einem Betriebszustand des Betriebsgeräts und/oder abhängig von einer Signalfrequenz.According to a further exemplary embodiment, a method for suppressing glowing of a luminous means is specified. The lamp is coupled to an operating device that has a radio interference suppression element. The method includes influencing a current flow to or from the radio interference suppression element depending on an operating state of the operating device and / or depending on a signal frequency.

Zusätzliche Merkmale des Verfahrens nach Ausführungsbeispielen und die damit jeweils erzielten Wirkungen entsprechen den zusätzlichen Merkmalen von Betriebsgeräten nach Ausführungsbeispielen.Additional features of the method according to exemplary embodiments and the effects achieved therewith in each case correspond to the additional features of operating devices according to exemplary embodiments.

Bei dem Verfahren wird ein Schaltmittel an einer Sekundärseite des Betriebsgeräts gesteuert, um einen Stromfluss zu und von dem Funkentstörelement abhängig von einem Betriebszustand zu unterdrücken. Das Schaltmittel ist zwischen dem Funkentstörelement und einer Masse angeordnet. Durch das Schaltmittel kann das Funkentstörelement selektiv dann zugeschaltet werden, wenn das Leuchtmittel von dem Betriebsgerät mit Energie versorgt werden soll. Das Funkentstörelement kann selektiv dann weggeschaltet werden, wenn das Leuchtmittel nicht mit Energie versorgt werden soll.In the method, a switching means on a secondary side of the operating device is controlled in order to suppress a current flow to and from the radio interference suppression element as a function of an operating state. The switching means is arranged between the radio interference suppression element and a ground. The radio interference suppression element can then be switched on selectively by the switching means when the lighting means is to be supplied with energy by the operating device. The radio interference suppression element can then be switched off selectively when the lamp is not to be supplied with energy.

Das Verfahren kann mit dem Betriebsgerät nach einem Ausführungsbeispiel ausgeführt werden. Insbesondere kann das Betriebsgerät ein LED-Konverter sein.The method can be carried out with the operating device according to one exemplary embodiment. In particular, the operating device can be an LED converter.

Weitere Merkmale, Vorteile und Funktionen von Ausführungsbeispielen der Erfindung werden aus der nachfolgenden detaillierten Beschreibung anhand der beigefügten Zeichnungen ersichtlich, in denen gleiche oder ähnliche Bezugszeichen Einheiten mit gleicher oder ähnlicher Funktion bezeichnen.

  • Fig. 1 zeigt ein Beleuchtungssystem mit einem Betriebsgerät für ein Leuchtmittel nach einem Ausführungsbeispiel der Erfindung.
  • Fig. 2 ist eine Blockdarstellung eines Betriebsgeräts nach einem Ausführungsbeispiel.
  • Fig. 3 ist ein Schaltbild einer Anti-Glimm-Einrichtung für ein Betriebsgerät nach einem Ausführungsbeispiel.
  • Fig. 4 ist ein Schaltbild eines Betriebsgeräts mit einer Anti-Glimm-Einrichtung nach einem Ausführungsbeispiel.
  • Fig. 5 ist ein Flussdiagramm eines Verfahrens nach einem Ausführungsbeispiel.
Further features, advantages and functions of exemplary embodiments of the invention will become apparent from the following detailed description with reference to the attached drawings, in which the same or similar reference symbols designate units with the same or similar function.
  • Fig. 1 shows a lighting system with an operating 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. 3 FIG. 3 is a circuit diagram of an anti-glow device for an operating device according to an exemplary embodiment.
  • Fig. 4 is a circuit diagram of an operating device with an anti-glow device according to an embodiment.
  • Fig. 5 Figure 3 is a flow diagram of a method according to an embodiment.

Fig. 1 veranschaulicht ein Beleuchtungssystem mit einem Betriebsgerät für ein Leuchtmittel nach einem Ausführungsbeispiel der Erfindung. Das Beleuchtungssystem umfasst eine Versorgungsquelle 10, beispielsweise eine Netzspannungsquelle, und eine Leuchte 40 oder mehrere Leuchten 40. Die Leuchte 40 weist ein Betriebsgerät 50 nach einem Ausführungsbeispiel und ein Leuchtmittel 42 auf. Das Leuchtmittel 42 kann eine oder mehrere Leuchtdioden (LEDs) umfassen. Entsprechend kann das Betriebsgerät 50 als LED-Konverter ausgestaltet sein. Das Leuchtmittel 42 kann auf verschiedene Weisen implementiert sein, beispielsweise durch eine oder mehrere anorganische LEDs, organische LEDs, andere Leuchtmittel oder eine Kombination der genannten Leuchtmittelarten. Über das Betriebsgerät 50 erfolgt ein geeigneter Betrieb des jeweiligen Leuchtmittels 42. Zu diesem Zweck kann das Betriebsgerät 50 beispielsweise ein Netzteil umfassen, welches aus einer der Leuchte 40 zugeführten Versorgungsspannung eine geeignete Spannung und/oder einen geeigneten Strom zum Betrieb des Leuchtmittels 42 erzeugt. Ein Gehäuse der Leuchte 40 kann geerdet sein. Fig. 1 illustrates a lighting system with an operating device for a lighting means according to an embodiment of the invention. The lighting system comprises a supply source 10, for example a mains voltage source, and a lamp 40 or a plurality of lamps 40. The lamp 40 has an operating device 50 according to an exemplary embodiment and a lamp 42. The lighting means 42 can comprise one or more light-emitting diodes (LEDs). The operating device 50 can accordingly be designed as an LED converter. The lighting means 42 can be implemented in various ways, for example by one or more inorganic LEDs, organic LEDs, other lighting means or a combination of the named types of lighting means. The operating device 50 is used to operate the respective lighting means 42 in a suitable manner. For this purpose, the operating device 50 can include, for example, a power supply unit which generates a suitable voltage and / or a suitable current for operating the lighting means 42 from a supply voltage supplied to the lamp 40. A housing of the lamp 40 can be grounded.

Wie unter Bezugnahme auf Fig. 2 bis Fig. 5 noch ausführlicher beschrieben wird, weist das Betriebsgerät 50 ein Funkentstörelement und eine Anti-Glimm-Einrichtung zum Unterdrücken von Glimmen auf. Mit der Anti-Glimm-Einrichtung kann durch betriebzustandsabhängiges und/oder frequenzabhängiges Leiten von Strom zu oder von dem Funkentstörelement ein Glimmen des Leuchtmittels 42 verringert oder vollständig eliminiert werden, wenn die Leuchte 40 ausgeschaltet ist und/oder wenn das Betriebsgerät 50 in einem Standby-Modus ist. Die Anti-Glimm-Einrichtung kann ein Schaltmittel umfassen. Das Schaltmittel kann so vorgesehen sein, dass es selektiv nur dann in einen Ein-Zustand geschaltet wird, um einen Funkentstörkondensator zuzuschalten, wenn die Leuchte 40 eingeschaltet ist. Das Schaltmittel kann mit einer Sekundärspule eines Wandlers des Betriebsgeräts gekoppelt sein.As with reference to FIGS. 2 to 5 will be described in more detail, the operating device 50 has a radio interference suppression element and an anti-glow device for suppressing glowing. With the anti-glow device, by conducting current to or from the radio interference suppression element depending on the operating state and / or frequency, glowing of the illuminant 42 can be reduced or completely eliminated when the lamp 40 is switched off and / or when the operating device 50 is in a standby mode. Mode is. The anti-glow device can comprise a switching means. The switching means can be provided in such a way that it is only switched selectively to an on state in order to connect a radio interference suppression capacitor when the lamp 40 is switched on. The switching means can be coupled to a secondary coil of a converter of the operating device.

Fig. 2 ist eine Blockdiagrammdarstellung eines Betriebsgeräts 50 nach einem Ausführungsbeispiel. Das Betriebsgerät 50 kann als Konstantstromquelle oder als Konstantspannungsquelle arbeiten. Das Betriebsgerät 50 kann ein LED-Konverter sein. Das Betriebsgerät 50 kann ein isolierter LED-Konverter sein. Fig. 2 FIG. 3 is a block diagram representation of an operating device 50 according to an embodiment. The operating device 50 can operate as a constant current source or as a constant voltage source. The operating device 50 can be an LED converter. The operating device 50 can be an isolated LED converter.

Das Betriebsgerät 50 weist eingangsseitig einen Gleichrichter 51 auf. Die gleichgerichtete Versorgungsspannung am Eingang des Betriebsgeräts kann von einer Glättungsschaltung 52 (auch als Leistungsfaktorkorrekturschaltung oder PFC-Schaltung bezeichnet) geglättet werden. Durch die Glättungsschaltung 52 kann eine Leistungsfaktorkorrektur derart erfolgen, dass die gesamte harmonische Verzerrung (THD) verringert und der Leistungsfaktor erhöht wird. Ein Gleichstrom-Gleichstrom-Wandler 53 kann von einer Steuereinrichtung, beispielsweise einem Mikrocontroller, Controller, Prozessor oder einer anderen integrierten Halbleiterschaltung auf einer Primärseite des Betriebsgeräts, gesteuert werden. Der Gleichstrom-Gleichstrom-Wandler kann einen LLC-Resonanzwandler, einen Sperrwandler oder eine andere Wandlertopologie aufweisen. Das Betriebsgerät kann einen Transformator mit einer primärseitigen Spule 54 und einer damit induktiv gekoppelten sekundärseitigen Spule 55 umfassen. Die primärseitige Spule 54 ist an einer Primärseite 61 des Betriebsgeräts 50 angeordnet. Die sekundärseitige Spule 55 ist an einer Sekundärseite 62 des Betriebsgeräts 50 angeordnet. Der Transformator kann eine galvanische Trennung herstellen. Die Sekundärseite 62 kann eine SELV ("safety extra-low voltage")-Seite des Betriebsgeräts sein, die durch eine SELV-Barriere 60 oder andere galvanische Trennung von der Primärseite 61 getrennt ist. Ein Ausgangstreiber 56 kann mit der sekundärseitigen Spule 55 gekoppelt sein. Ausgänge des Betriebsgeräts 50 können elektrisch leitend mit dem Leuchtmittel 42, beispielsweise mit einem LED-Modul, verbunden sein. Das Betriebsgerät 50 kann beispielsweise auch nur einen Gleichstrom-Gleichstrom-Wandler 53 aufweisen, die Gleichrichter 51, die Glättungsschaltung 52 sowie der Ausgangstreiber 56 sind optionale Elemente, deren Funktion auch in den Gleichstrom-Gleichstrom-Wandler 53 integriert sein.The operating device 50 has a rectifier 51 on the input side. The rectified supply voltage at the input of the operating device can 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 a power factor correction in such a way that the total harmonic distortion (THD) is reduced and the power factor is increased. A DC-DC converter 53 can be of a Control device, for example a microcontroller, controller, processor or another integrated semiconductor circuit on a primary side of the operating device are controlled. The DC-DC converter can have an LLC resonant converter, a flyback converter, or another converter topology. The operating device can comprise a transformer with a primary-side coil 54 and a secondary-side coil 55 inductively coupled therewith. 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 galvanic isolation. The secondary side 62 can be a SELV (“safety extra-low voltage”) side of the operating device, which is separated from the primary side 61 by a SELV barrier 60 or other galvanic isolation. An output driver 56 can be coupled to the secondary-side coil 55. Outputs of the operating device 50 can be connected in an electrically conductive manner to the lighting means 42, for example to an LED module. The operating device 50 can, for example, also have only one DC-DC converter 53; the rectifiers 51, the smoothing circuit 52 and the output driver 56 are optional elements whose functions are also integrated in the DC-DC converter 53.

Das Betriebsgerät 50 weist ein Funkentstörelement auf. Bei der dargestellten Ausgestaltung ist das Funkentstörelement als Funkentstörkondensator 59 ausgestaltet. Der Funkentstörkondensator 59 ist zwischen die Primärseite 61 und die Sekundärseite 62 geschaltet. Durch den Funkentstörkondensator 59 können zumindest im Nutzbetrieb, wenn die Leuchte 40 eingeschaltet ist, hochfrequente Störsignale von den Netz- und Lampenleitungen abgeleitet werden. Dadurch können beispielsweise elektromagnetische Störungen verringert werden. Die hochfrequenten Störsignale können beispielsweise aus dem Betrieb eines oder mehrerer Schaltregler, beispielsweise des Gleichstrom-Gleichstrom-Wandlers 53 oder anderer Komponenten des Betriebsgeräts 50, verursacht werden.The operating device 50 has a radio interference suppression element. In the embodiment shown, 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. The radio interference suppression capacitor 59 can divert high-frequency interference signals from the mains and lamp lines, at least when the lamp 40 is switched on. This can reduce electromagnetic interference, for example. The high-frequency interference signals can be caused, for example, from the operation of one or more switching regulators, for example the direct current-direct current converter 53 or other components of the operating device 50.

Das Betriebsgerät 50 weist eine Anti-Glimm-Einrichtung 70 auf. Die Anti-Glimm-Einrichtung 70 ist mit dem Funkentstörelement gekoppelt. Die Anti-Glimm-Einrichtung 70 kann eingerichtet sein, um Ströme zwischen dem Funkentstörelement und einem Massepotenzial P0 zu beeinflussen, beispielsweise selektiv zu sperren. Dies kann abhängig von einem Betriebszustand der Leuchte oder des Betriebsgeräts erfolgen. Alternativ oder zusätzlich kann der Stromfluss zwischen dem Funkentstörelement und einem Massepotenzial P0 frequenzabhängig gesperrt werden. Die Anti-Glimm-Einrichtung 70 kann so ausgestaltet sein, dass sie zumindest dann, wenn die Leuchte 40 ausgeschaltet und/oder sich das Betriebsgerät 50 in einem Standby-Modus befindet, Ströme bei einer Frequenz der Versorgungsspannung, die dem Betriebsgerät zugeführt wird, sperrt oder dämpft. Die Anti-Glimm-Einrichtung 70 kann so ausgestaltet sein, dass zumindest dann, wenn die Leuchte 40 eingeschaltet ist, Ströme bei einer Funkentstörfrequenz zwischen dem Funkentstörelement 59 und dem Massepotenzial P0 fließen können.The operating device 50 has an anti-glow device 70. The anti-glow device 70 is coupled to the radio interference suppression element. The anti-glow device 70 can be set up to influence currents between the radio interference suppression element and a ground potential P0, for example to selectively block them. This can take place as a function of an operating state of the luminaire or the operating device. Alternatively or additionally, the current flow between the radio interference suppression element and a ground potential P0 can be blocked as a function of the frequency. The anti-glow device 70 can be designed in such a way that it flows in at least when the lamp 40 is switched off and / or the operating device 50 is in a standby mode a frequency of the supply voltage that is fed to the operating device, blocks or attenuates. The anti-glow device 70 can be configured such that at least when the lamp 40 is switched on, currents can flow at a radio interference suppression frequency between the radio interference suppression element 59 and the ground potential P0.

Unter Bezugnahme auf Fig. 3 bis Fig. 5 werden Ausgestaltungen der Anti-Glimm-Einrichtung 70 bei Betriebsgeräten nach Ausführungsbeispielen näher beschrieben.With reference to FIGS. 3 to 5 Refinements of the anti-glow device 70 in operating devices according to exemplary embodiments are described in more detail.

Fig. 3 ist ein Schaltbild einer Anti-Glimm-Einrichtung 70 bei einem Betriebsgerät nach einem Ausführungsbeispiel. Die Anti-Glimm-Einrichtung 70 umfasst ein Schaltmittel 71. Das Schaltmittel 71 kann auf der Sekundärseite 62 des Betriebsgeräts angeordnet sein. Das Schaltmittel 71 kann einen Transistor, beispielsweise ein FET oder einen anderen Leistungsschalter, umfassen. Das Schaltmittel 71 kann den Funkentstörkondensator 59 leitend mit einem Massepotenzial P0 verbinden, wenn es in einen Ein-Zustand geschaltet ist. Fig. 3 FIG. 4 is a circuit diagram of an anti-glow device 70 in an operating device according to an exemplary embodiment. The anti-glow device 70 comprises a switching means 71. The switching means 71 can be arranged on the secondary side 62 of the operating device. The switching means 71 can comprise a transistor, for example an FET or another power switch. The switching means 71 can conductively connect the radio interference suppression capacitor 59 to a ground potential P0 when it is switched to an on state.

Das Schaltmittel 71 kann so gesteuert werden, dass ein Widerstand des Schaltmittels 71 abhängig von einem Betriebszustand gesteuert wird. Der Widerstand des Schaltmittels 71 kann selektiv dann verringert werden, wenn die Leuchte 40 eingeschaltet ist und/oder wenn sich das Betriebsgerät 50 nicht in einem Standby-Modus befindet und Energie an das Leuchtmittel bereitstellt. Dadurch wird der Funkenstörkondensator 59 zugeschaltet, um Störsignale gegen das Massepotenzial P0 abzuleiten. Der Widerstand des Schaltmittels 71 kann selektiv dann erhöht werden, wenn die Leuchte 40 ausgeschaltet ist und/oder wenn sich das Betriebsgerät 50 in einem Standby-Modus befindet. Dadurch kann das Schaltmittel 71 in einen Aus-Zustand geschaltet werden. Der Funkenstörkondensator 59 kann so weggeschaltet werden, um ein Glimmen des Leuchtmittels zu unterdrücken.The switching means 71 can be controlled such that a resistance of the switching means 71 is controlled as a function of an operating state. The resistance of the switching means 71 can then be selectively reduced when the lamp 40 is switched on and / or when the operating device 50 is not in a standby mode and provides energy to the lighting means. As a result, the radio interference capacitor 59 is switched on in order to divert interference signals against the ground potential P0. The resistance of the switching means 71 can be selectively increased when the lamp 40 is switched off and / or when the operating device 50 is in a standby mode. As a result, the switching means 71 can be switched to an off state. The radio interference capacitor 59 can be switched off in order to suppress a glowing of the lighting means.

Das Schaltmittel 71 kann so vorgesehen sein, dass es abhängig von einer Spannung oder einem Strom am Ausgang des Betriebsgeräts in den Ein-Zustand geschaltet wird. Dazu kann beispielsweise ein Gate des Schaltmittels 71 mit einer Betriebsspannung der Sekundärseite 62 gekoppelt sein.The switching means 71 can be provided in such a way that it is switched to the on state as a function of a voltage or a current at the output of the operating device. For this purpose, for example, a gate of the switching means 71 can be coupled to an operating voltage of the secondary side 62.

Das Schaltmittel 71 kann so vorgesehen sein, dass es von einem Mikrocontroller, einem Controller, einem Prozessor oder einer anderen integrierten Halbleiterschaltung gesteuert wird. Ein Gate des Schaltmittels 71 kann mit einem Mikrocontroller gekoppelt sein, der auf der Sekundärseite 62 des Betriebsgeräts 50 angeordnet ist. Der Mikrocontroller kann mit der sekundärseitigen Spule 55 gekoppelt sein, um von dieser mit Energie versorgt zu werden. Entsprechend steuert der Mikrocontroller das Schaltmittel 71 nur dann so, dass es in einen Ein-Zustand geschaltet wird, wenn auch der Mikrocontroller der Sekundärseite mit Energie versorgt wird. Dadurch kann sichergestellt werden, dass das Funkentstörelement selektiv dann weggeschaltet wird, wenn die Leuchte ausgeschaltet ist und/oder das Betriebsgerät in einem Standby-Modus ist.The switching means 71 can be provided in such a way that it is controlled by a microcontroller, a controller, a processor or another integrated semiconductor circuit. A gate of the switching means 71 can be coupled to a microcontroller which is arranged on the secondary side 62 of the operating device 50. The microcontroller can be coupled to the secondary-side coil 55 in order to be able to use it Energy to be supplied. Correspondingly, the microcontroller controls the switching means 71 only in such a way that it is switched to an on state when the microcontroller on the secondary side is also supplied with energy. This can ensure that the radio interference suppression element is selectively switched off when the lamp is switched off and / or the operating device is in a standby mode.

Fig. 4 zeigt eine Schaltungsanordnung von Komponenten eines Betriebsgeräts 50 nach einem Ausführungsbeispiel. Dabei ist zur Veranschaulichung ein Wandler mit einer Sperrwandlertopologie dargestellt. Andere Wandlertypen können verwendet werden. Bei dem Wandler wird ein Schaltmittel 58 betätigt, um Energie in der primärseitigen Spule 54 zu speichern (d.h. die primärseitige Spule 54 zu laden) oder um Energie von der primärseitigen Spule 54 zur sekundärseitigen Spule 55 zu übertragen (d.h. die primärseitige Spule 54 zu entladen). Das Schaltmittel 58 kann von einem Mikrocontroller 69 auf der Primärseite des Betriebsgeräts 50 gesteuert werden. Anstelle eines Mikrocontrollers 69 kann auch ein Controller, ein Prozessor oder eine andere integrierte Halbleiterschaltung verwendet werden. Auf der Sekundärseite kann über eine Diode 65, die mit der sekundärseitigen Spule 55 verbunden ist, ein Ladekondensator 66 geladen werden. Über Ausgangsanschlüsse 67, 68 des Betriebsgeräts 50 kann Strom an das Leuchtmittel ausgegeben werden. Der Mikrocontroller 69 kann das Schaltmittel 58 so steuern, dass aus einer gleichgerichteten Versorgungsspannung an Eingängen 63, 64 des Wandlers ein Konstantstrom zur Versorgung von LEDs erzeugt wird. Fig. 4 shows a circuit arrangement of components of an operating device 50 according to an embodiment. A converter with a flyback converter topology is shown for the purpose of illustration. Other types of transducers can be used. In the converter, a switching means 58 is actuated to store energy in the primary-side coil 54 (ie to charge the primary-side coil 54) or to transfer energy from the primary-side coil 54 to the secondary-side coil 55 (ie to 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. Instead of a microcontroller 69, a controller, a processor or another integrated semiconductor circuit can also be used. A charging capacitor 66 can be charged on the secondary side via a diode 65 which is connected to the secondary-side coil 55. Current can be output to the lighting means via output connections 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.

Ein weiterer Mikrocontroller 72 ist auf der Sekundärseite des Betriebsgeräts vorgesehen. Der weitere Mikrocontroller 72 kann von einer Betriebsspannung der Sekundärseite mit Energie versorgt werden. Der weitere Mikrocontroller 72 kann eingerichtet sein, um das Schaltmittel 71 von einem Aus-Zustand in einen Ein-Zustand zu schalten, wenn über die Ausgangsanschlüsse 67, 68 Energie für das Leuchtmittel bereitgestellt wird. Der weitere Mikrocontroller 72 kann so eingerichtet sein, dass das Schaltmittel 71 in einen Aus-Zustand geschaltet ist, wenn die Leuchte ausgeschaltet ist und/oder sich das Betriebsgerät in einem Standby-Modus befindet.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 on the secondary side. The further microcontroller 72 can be set up to switch the switching means 71 from an off state to an on state when energy is provided for the lighting means via the output connections 67, 68. The further microcontroller 72 can be set up in such a way that the switching means 71 is switched to an off state when the lamp is switched off and / or the operating device is in a standby mode.

Der weitere Mikrocontroller 72 ist von dem Mikrocontroller 69 der Primärseite getrennt und kann weitere Steuerfunktionen ausführen. Anstelle des Mikrocontrollers 72 kann auch ein Controller, ein Prozessor oder eine andere integrierte Halbleiterschaltung verwendet werden.The further microcontroller 72 is separate from the microcontroller 69 on the primary side and can carry out further control functions. Instead of the microcontroller 72, a controller, a processor or another integrated semiconductor circuit can also be used.

Fig. 5 ist ein Flussdiagramm eines Verfahrens 90 nach einem Ausführungsbeispiel. Das Verfahren 90 kann von dem Betriebsgerät 50 nach einem Ausführungsbeispiel automatisch ausgeführt werden. Bei dem Verfahren kann ein Glimmen eines Leuchtmittels abhängig von einem Betriebszustand unterdrückt werden. Fig. 5 Figure 3 is a flow diagram of a method 90 according to an embodiment. The method 90 can be carried out automatically by the operating device 50 according to one exemplary embodiment. In the method, a glow of a light source can be suppressed as a function of an operating state.

Bei Schritt 91 wird ermittelt, ob eine Lichtabgabe über LEDs erfolgt. Dazu kann ermittelt werden, ob die Leuchte eingeschaltet ist. Es kann eine Betriebsspannung an einer Sekundärseite des Betriebsgeräts überwacht werden. Andere Kriterien können überprüft werden um zu ermitteln, ob ein Glimmen der LEDs unterdrückt werden soll.At step 91 it is determined whether there is light output via LEDs. To do this, it can be determined whether the lamp is switched on. An operating voltage on a secondary side of the operating device can be monitored. Other criteria can be checked to determine whether the LEDs should be suppressed from glowing.

Bei Schritt 92 kann ein Funkentstörelement, beispielsweise ein Funkentstörkondensator, weggeschaltet werden, wenn Glimmen unterdrückt werden soll. Dies kann dadurch erreicht werden, dass ein Leitungspfad zwischen dem Funkentstörelement und einem Massepotenzial zumindest für Signale bei der Versorgungsspannungsfrequenz hochohmig ist. Ein Schaltmittel zwischen dem Funkentstörelement und dem Massepotenzial kann in einen Aus-Zustand geschaltet werden. Das Schaltmittel kann so ausgestaltet sein, dass es automatisch in einen sperrenden Zustand übergeht, wenn kein Steuersignal an einem Gate des Schaltmittels anliegt. Das Schaltmittel kann dadurch in den Aus-Zustand geschaltet werden, dass kein Steuersignal zum Steuern des Schaltmittels ausgesteuert wird.In step 92, a radio interference suppression element, for example a radio interference suppression capacitor, can be switched off if glowing is to be suppressed. This can be achieved in that a line 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 can be designed in such a way that it automatically changes to a blocking state if no control signal is applied to a gate of the switching means. The switching means can be switched to the off state in that no control signal for controlling the switching means is output.

Bei Schritt 93 kann das Funkentstörelement zugeschaltet werden, wenn das Glimmen des Leuchtmittels nicht unterdrückt werden muss, beispielsweise wenn die Leuchte eingeschaltet ist. Dies kann dadurch erreicht werden, dass ein Leitungspfad zwischen dem Funkentstörelement und einem Massepotenzial zumindest für Frequenzen in einem Funkentstörbereich niederohmig ist. Ein Schaltmittel zwischen dem Funkentstörelement und dem Massepotenzial kann in einen Ein-Zustand geschaltet werden.In step 93, the radio interference suppression element can be switched on if the glowing of the lighting means does not have to be suppressed, for example if the lamp is switched on. This can be achieved in that a conduction path between the radio interference suppression element and a ground potential has a 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.

Während Betriebsgeräte und Verfahren nach Ausführungsbeispielen unter Bezugnahme auf die Figuren detailliert beschrieben wurden, können Abwandlungen bei weiteren Ausführungsbeispielen realisiert werden. Während beispielsweise Ausführungsbeispiele detailliert beschrieben wurden, bei denen das Funkentstörelement als Kondensator ausgestaltet ist, können auch andere Ausgestaltungen und/oder Anordnungen des Funkentstörelements verwendet werden.While operating devices and methods according to exemplary embodiments have been described in detail with reference to the figures, modifications can be implemented in further exemplary embodiments. For example, while exemplary embodiments have been described in detail in which the radio interference suppression element is designed as a capacitor, other configurations and / or arrangements of the radio interference suppression element can also be used.

Betriebsgeräte und Verfahren nach Ausführungsbeispielen können insbesondere zum Betreiben von Leuchten, die LEDs umfassen, eingesetzt werden, ohne darauf beschränkt zu sein.Operating devices and methods according to exemplary embodiments can in particular be used for operating lights that include LEDs, without being restricted thereto.

Claims (7)

  1. Operating device for an illuminant (42), comprising:
    a transformer having a primary-side coil (54) arranged on a primary side (61) of the operating device (50) and a secondary-side coil (55) inductively coupled thereto and arranged on a secondary side (62) of the operating device (50), and
    a radio interference suppression element (59), wherein the radio interference suppression element (59) is a radio interference suppression capacitor between the primary side (61) and the secondary side (62),
    characterized by
    an anti-glow device (70; 71) coupled to the radio interference suppression element (59), wherein the anti-glow device (70; 71) comprises a controllable switching means (71) connected between the radio interference suppression element (59) and a ground potential (P0) of the secondary side (62),
    wherein in a first state of the operating device (50) the operating device (50) is configured to switch the controllable switching means (71) into an on state and thus to conductively connect the radio interference suppression element (59) selectively to the ground potential (P0) of the secondary side (62), and in a second state of the operating device (50) to switch the controllable switching means (71) into an off state and thus to disconnect the radio interference suppression element (59) selectively from the ground potential (P0) in order to suppress a glow of the illuminant (42).
  2. Operating device according to Claim 1,
    wherein the operating device (50) has means (72) to switch the controllable switching means (71) into the on state depending on the operating state.
  3. Operating device according to Claim 2,
    wherein the means (72) are configured to switch the controllable switching means (71) as a function of a voltage on the secondary side (62) of the operating device (50).
  4. Operating device according to any one of the preceding claims
    wherein the anti-glow device (70; 71) is arranged on the secondary side (62) of the operating device (50).
  5. Operating device according to any one of the preceding claims,
    wherein the operating device (50) is designed as an LED converter.
  6. Lighting system comprising
    an operating device (50) according to any one of Claims 1 to 5,
    a supply source (10) connected to the operating device (50), and
    an illuminant (42) connected to the operating device (50).
  7. Method for suppressing glow of an illuminant (42) which is coupled to an operating device (50) according to any one of Claims 1-5,
    wherein the method comprises:
    switching on the controllable switching means (71) in the first state of the operating device (50), and selectively connecting the radio interference suppression element (59) to the ground potential (P0) of the secondary side (62) of the operating device (50), and
    switching off the controllable switching means (71) in the second state of the operating device (50), and selectively disconnecting the radio interference suppression element (59) from the ground potential (P0) of the secondary side (62) of the operating device (50) in order to suppress the glow of the illuminant (42).
EP13840118.7A 2012-12-06 2013-12-06 Operating device for illuminant and related method Active EP2929756B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012023934.3A DE102012023934B4 (en) 2012-12-06 2012-12-06 Control gear and method for suppressing smoldering of a lamp
ATGM461/2012U AT13688U1 (en) 2012-12-06 2012-12-06 Operating device for bulbs
PCT/AT2013/000197 WO2014085837A2 (en) 2012-12-06 2013-12-06 Operating device for illuminant

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EP2929756A2 EP2929756A2 (en) 2015-10-14
EP2929756B1 true EP2929756B1 (en) 2021-02-03

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EP (1) EP2929756B1 (en)
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EP2929756A2 (en) 2015-10-14
CN104838725A (en) 2015-08-12
WO2014085837A2 (en) 2014-06-12
US20150305112A1 (en) 2015-10-22
WO2014085837A3 (en) 2014-09-04

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