EP2282608A2 - Circuit supplémentaire électronique - Google Patents

Circuit supplémentaire électronique Download PDF

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Publication number
EP2282608A2
EP2282608A2 EP10161850A EP10161850A EP2282608A2 EP 2282608 A2 EP2282608 A2 EP 2282608A2 EP 10161850 A EP10161850 A EP 10161850A EP 10161850 A EP10161850 A EP 10161850A EP 2282608 A2 EP2282608 A2 EP 2282608A2
Authority
EP
European Patent Office
Prior art keywords
additional circuit
circuit according
electronic
load
directly
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.)
Withdrawn
Application number
EP10161850A
Other languages
German (de)
English (en)
Inventor
Dirk Herzog
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.)
Insta Elektro GmbH and Co KG
Original Assignee
Insta Elektro 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
Application filed by Insta Elektro GmbH and Co KG filed Critical Insta Elektro GmbH and Co KG
Publication of EP2282608A2 publication Critical patent/EP2282608A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]

Definitions

  • the present invention is based on a designed according to the preamble of the main claim electronic additional circuit for without ballasts directly to AC voltages of 110V - 240V connected LED bulbs.
  • Such additional electronic circuits are usually intended to realize a functional operation of LED lamps having lights that are connected without ballasts directly to AC voltages of 110V - 240V.
  • Such directly connected to AC voltage LED bulbs are characterized by certain properties that simplify their use. Above all, this includes the fact that they can be operated directly on grid voltage. This eliminates problems caused by an otherwise required switching power supply or ballast. There are no significant radio frequency disturbances to be expected. There is no need to provide additional space for ballasts or switching power supplies. All components for such LED bulbs are readily available as SMD components, so that the use of wired components is not required, which is a significant simplification for the production.
  • Such LED bulbs become conductive only at significant mains voltage amplitude. This leads to a not inconsiderable current flow gap in a wide range around the net zero crossing. The current for such LED bulbs begins to flow only about 2ms after the zero crossing, which corresponds to a delay of 10% of the total period duration.
  • such LED bulbs can be dimmed by means of phase or section dimmers. However, this option does not work satisfactorily without further measures because the dimming range is severely limited and there is a sudden dimming behavior. The reason for this is that, depending on the dimmer, e.g. the holding currents of triacs are not cleanly reached, the network zero crossing detection required for control is disturbed or the dimmer can no longer be adequately supplied with energy in certain dimming positions.
  • the present invention is therefore an object of the invention to provide an additional electronic circuit through which in a cost effective manner a flawless control of directly to AC voltages of 110V - 240V connected LED bulbs while maintaining the appropriate standards even when using lights with greater power consumption ( ⁇ 25W) is realized without a significant deterioration of the efficiency is to be accepted.
  • the additional circuit switches starting in the phase zero crossings and a defined ohmic additional load to the LED bulbs, and at the same time the current consumption of the entire arrangement is measured and the current consumption of the LED bulbs has reached a predetermined value, the parallel connected ohmic additional load switched off again to reduce the total power loss.
  • the current flow gap in the zero crossings is thereby avoided and the waveform generated by the LED bulbs approaches when using the electronic additional circuit according to the invention of the advantageous sinusoidal shape.
  • the electronic additional circuit according to the invention when using the electronic additional circuit according to the invention no high-frequency switching operations (use of ballasts) are triggered, so that additional high-frequency noise are effectively avoided. Furthermore, it is particularly advantageous that the integration of the additional circuit according to the invention can easily be done on one and the same circuit board on which the LED bulbs of the lamp in question are arranged, because the complete assembly can be done with SMD components.
  • Such electronic additional circuit for without ballasts directly to AC voltages of 110V - 240V connected LED bulbs 1 essentially from a current sensor 2, at least one load control unit 3 and at least one additional ohmic load 4.
  • the electronic additional circuit is connected to a supply network 5, which provides a mains voltage of 230V in the present case.
  • the electronic additional circuit switches quasi starting in the phase zero crossings.
  • the current sensor 2 detects the total current flowing through the LED lamps 1, which are designed for operation on a supply network supplying 230V.
  • the load control unit 3 switches the ohmic additional load 4 for a period in which the current does not yet flow in sufficient strength (current gap) through the LED lighting means 1.
  • the current sensor 2 consists of the measuring resistors R1-R3 which detect the total current flowing through the LED lighting means 1. Parallel to this, an optocoupler OK is activated via a series resistor R4, which activates its output when the predetermined current intensity (acceptance limit) is reached. Parallel to the current sensor 2, a protective diode D6 is present to protect the circuit against high-energy interference voltages (surge). This ensures the standard-compliant "EMC compatibility". By the optocoupler OK measured in the sensor 2 shutdown threshold potential is passed separately to the load control unit 3.
  • the load control unit 3 consists of a rectifier D3, a series resistor R5 with Zener diode D1 and the gate resistor R6.
  • the ohmic additional load 4 is a combination of the resistors R7, R8, R9 and the ohmic portion of the drain-source path (RDS) of the first transistor T1.
  • the generated power dissipation is correspondingly distributed over all the components involved so as not to concentrate the resulting heat development on one point. By rectification of the load control unit 3 by the rectifier D3 this is used for both half-waves of the mains voltage.
  • the voltage across the series resistor R5 at the Zener diode D1 increases, whereby a voltage builds up on this Zener diode D1.
  • This voltage is applied at the same time via the resistor R6 to the gate terminal of the first transistor T1 and controls this, so that the ohmic additional load 4 is connected in parallel to the payload generated by the LED light source 1.
  • the resistor R9 causes a negative feedback of the first transistor T1 to suppress a tendency to oscillate.
  • the resistor R8 is designed as a thermistor (PTC) in order to limit the load current of the ohmic additional load 4 in the event of a fault of the first transistor T1 (eg permanent short-circuit) and thus prevent overheating of the resistors R7 and R9.
  • PTC thermistor
  • LED lamps 1 are in the first and second embodiments, as in particular FIG. 2 and FIG. 4 emerges, combined to form an LED illuminant module 6.
  • LED illuminant module 6 In this case, only three LED lighting means 1 are shown by way of example.
  • the number of summarized in an LED lamp module 6 LED light source 1 is virtually arbitrary and can be adjusted from case to case depending on the design of the lamp or the requirements imposed on the lamp.
  • the current consumption of an LED illuminant module 6 or an LED luminaire, with at least one LED illuminant 1 with a total power consumption of> 25W is thus influenced so that approximates the waveform of the total current of a sine wave and thus the requirements for current harmonics according to standard EN61000 -3-2, Table C is followed.
  • Another advantage is the fact that the electronic additional circuit affects the power consumption in such a way that the current flow in the region of the zero crossing is sufficiently present in order to be able to supply commercial dimmers as well. H. It allows a linear dimming range from the smallest to the largest dimming level.
  • the approximate sinusoidal shape of the total current makes it possible to use commercially available phase gating dimmers and phase dimmers of suitable power without any limitations for the invention entire dimming range allows.
  • This electronic additional circuit is thus readily able to operate standard LED lights or LED lighting modules 6 even with a power consumption> 25W in all operating ranges.
  • the efficiency of the combination of the electronic additional circuit with at least one LED lamp 1 to be operated is readily better than to use a permanently connected in parallel ohmic load, since the used ohmic additional load 4 is active only in the areas of zero crossings. As a result, the total power consumption is only increased by a proportion of less than 10% with regard to the power consumption caused by the at least one LED illuminant 1.
  • FIG. 3 and 4 shows, according to a second embodiment, it is possible to have the control of the load control unit 3 by a timer 7 done.
  • the current is then not measured to influence the ohmic additional load 4, but there are set in advance times in which the ohmic additional load 4 is connected to the LED lamps 1 to be operated or switched off.
  • the timer 7 consists of the resistors R1 and R2 and the second transistor T2.
  • About the ratio of the base voltage divider R1, R2 is determined from which mains voltage level and thus also after what time (this is a 100 Hz pulsating sinusoidal voltage) of the second transistor T2 switches.
  • the Lastanberichtiser 3 consists of a rectifier D3, resistor R5 with zener diode D1 and the gate resistor R6.
  • the ohmic additional load 4 is a combination of the resistor R7, R8, R9 and the ohmic portion of the drain-source path (RDS) of the first transistor T1.
  • the generated power dissipation is correspondingly distributed over all the components involved so as not to concentrate the resulting heat development on one point.
  • rectification of the load control unit 3 by the rectifier D3 this is used for both half-waves of the mains voltage.
  • the voltage across the series resistor R5 at the Zener diode D1 increases, whereby a voltage builds up on this Zener diode D1.
  • This voltage is applied at the same time via the resistor R6 to the gate terminal of the first transistor T1 and controls this, so that the ohmic additional load 4 is connected in parallel to the payload generated by the LED light source 1.
  • the current through the resistor R9 causes a negative feedback of the first transistor T1 to suppress a tendency to oscillate.
  • the resistor R8 is designed as a thermistor (PTC) in order to limit the load current of the additional ohmic load 4 in the event of a fault of the first transistor T1 (eg permanent short-circuit) and thus prevent overheating of the resistors R7 and R8.
  • PTC thermistor
  • the second transistor T2 When the mains voltage has reached the fixed value of the timer 7, the second transistor T2 is turned on and thus the voltage across the Zener diode D1 is shorted. Thus, the first transistor T1 is blocked and the ohmic additional load 4 is turned off. From now on, only the current consumption of the LED light 1 is effective.
  • the second transistor T2 When the mains voltage drops below the set value (in the vicinity of the zero crossing) of the timer 7, the second transistor T2 is again turned off and the voltage across the Zener diode D1 turns on the first transistor T1 again. Thus, the ohmic additional load 4 becomes active again.
  • the electronic additional circuit is present as a module 8 on a first circuit board L1, which is equipped at least with one, directly connected to AC voltages of 230V LED lighting 1.
  • three LED bulbs 1 are provided on the first circuit board L1.
  • the electronic additional circuit is present as an external module 8 on a second circuit board L2, which is arranged directly in the housing 9 of a lamp X, which has at least one, directly connected to AC voltage of 230V LED lighting means 1.
  • three LED lighting means 1 are provided on the first printed circuit board L1 arranged in the housing 9 of the luminaire X.
  • the electronic additional circuit is present as an external module 8 on a third circuit board L3, which is arranged within its own further housing 10 and to which at least one provided with housing 9 lamp X is connected, at least one, directly connected to AC voltage of 230V LED illuminant 1 has.
  • the structure of the lamp X is not shown in detail.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
EP10161850A 2009-08-06 2010-05-04 Circuit supplémentaire électronique Withdrawn EP2282608A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009036351 2009-08-06

Publications (1)

Publication Number Publication Date
EP2282608A2 true EP2282608A2 (fr) 2011-02-09

Family

ID=43216753

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10161850A Withdrawn EP2282608A2 (fr) 2009-08-06 2010-05-04 Circuit supplémentaire électronique

Country Status (1)

Country Link
EP (1) EP2282608A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013114255A1 (fr) 2012-02-01 2013-08-08 Koninklijke Philips N.V. Dispositif d'attaque et procédé d'attaque pour exciter une charge, en particulier dans un ensemble del
WO2013120893A1 (fr) * 2012-02-15 2013-08-22 Osram Gmbh Circuit de pilote de charge à capteur de courant comprenant diode de protection

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013114255A1 (fr) 2012-02-01 2013-08-08 Koninklijke Philips N.V. Dispositif d'attaque et procédé d'attaque pour exciter une charge, en particulier dans un ensemble del
US9544966B2 (en) 2012-02-01 2017-01-10 Philips Lighting Holding B.V. Driver device and driving method for driving a load, in particular a LED unit
RU2618697C2 (ru) * 2012-02-01 2017-05-11 Филипс Лайтинг Холдинг Б.В. Устройство возбуждения и способ возбуждения для возбуждения нагрузки, в частности сд (светодиодного ) блока
WO2013120893A1 (fr) * 2012-02-15 2013-08-22 Osram Gmbh Circuit de pilote de charge à capteur de courant comprenant diode de protection

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