EP3510836A1 - Dispositif d'excitation à correction du facteur de puissance et compensation d'ondulation par changement du mode de fonctionnement - Google Patents
Dispositif d'excitation à correction du facteur de puissance et compensation d'ondulation par changement du mode de fonctionnementInfo
- Publication number
- EP3510836A1 EP3510836A1 EP16921213.1A EP16921213A EP3510836A1 EP 3510836 A1 EP3510836 A1 EP 3510836A1 EP 16921213 A EP16921213 A EP 16921213A EP 3510836 A1 EP3510836 A1 EP 3510836A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- energy store
- light
- emitting means
- cbulk
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012937 correction Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000032683 aging Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- H05B45/355—Power factor correction [PFC]; Reactive power compensation
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/385—Switched mode power supply [SMPS] using flyback topology
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/375—Switched mode power supply [SMPS] using buck topology
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/38—Switched mode power supply [SMPS] using boost topology
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/39—Circuits containing inverter bridges
Definitions
- the invention relates to an operating device for a light-emitting means in accordance with the preamble of patent claim l and to a method in accordance with the preamble of patent claim 9.
- Such operating devices are used in lighting systems in order to achieve lighting of rooms, routes or else escape routes.
- the light-emitting means are actuated and, if necessary, activated by operating devices.
- gas discharge lamps or else light-emitting diodes (LEDs) are used as light source.
- the object of the invention consists in providing an operating device for a light-emitting means which has power factor correction and only transmits very low levels of interference.
- the invention relates to an operating device for a light-emitting means comprising at least one driver circuit for operating at least one light-emitting means, an energy store, which feeds the driver circuit, a power factor correction circuit, which is preferably in the form of a boost converter or flyback converter and feeds the energy store, having a storage inductor, an actively clocked switch and a rectifying diode, characterized in that the voltage at the energy store is monitored, and the operation of the operating device is changed if the ripple of the voltage at the energy store exceeds a predetermined limit value. The operation of the driver circuit is changed and the output current by the driver circuit is increased.
- the operating device preferably has means for estimating the life of the energy store to be expected. These means for estimating the life to be expected preferably evaluate the detected ripple of the voltage at the energy store. Optionally, in addition also further measurements or actuation variables can be evaluated within the operating device.
- the invention also relates to a method for operating light-emitting means, wherein the light-emitting means is operated by at least one driver circuit, a power factor correction circuit feeds the energy store, and an energy store feeds the driver circuit, wherein the voltage at the energy store is monitored, and the operation of the light-emitting means is performed depending on the detected ripple of the voltage at the energy store.
- the operation of the light-emitting means can preferably be changed when the detected ripple of the voltage at the energy store exceeds a predetermined limit value.
- figure 1 shows an operating device according to the invention
- figure 2 shows the power factor correction circuit of an operating device in accordance with the invention
- figure 3 shows One example of a driver circuit (LED driver) which is in the form of a buck converter.
- LED driver which is in the form of a buck converter.
- Figure 1 shows an operating device A for a light-emitting means.
- Such an operating device A for a light-emitting means typically has a driver circuit (lamp driver) for operating at least one light-emitting means (load) , an energy store, which feeds the driver circuit, a power factor correction circuit (PFC) , which can be in the form of a boost converter and feeds the energy store, having a storage inductor, an actively clocked switch and a rectifying diode.
- a filter circuit and a rectifier circuit are preferably connected upstream of the power factor correction circuit.
- the driver circuit is a resonant half-bridge for actuating a lamp load.
- the driver circuit can also be formed by a resonant half-bridge with electrical isolation and rectification at the output for actuating LEDs.
- Figure 2 shows a power factor correction circuit according to the invention for an operating device for a light-emitting means.
- the power factor correction circuit is in the form of a boost converter and feeds the energy store Cbulk.
- the energy store Cbulk is, for example, an electrolytic capacitor. It has a storage inductor Lb, an actively clocked switch S and a rectifying diode D.
- the operating device (A) for a light-emitting means has at least one driver circuit for operating at least one light-emitting means, an energy store (Cbulk) , which feeds the driver circuit (LED driver) , and a power factor correction circuit, which is preferably in the form of a boost converter and feeds the energy store (Cbulk) , having a storage inductor (Lb) , an actively clocked switch (S) and a rectifying diode (D) .
- the voltage at the energy store (Cbulk) is monitored, and the operation of the operating device (A) is changed if the ripple of the voltage at the energy store (Cbulk) exceeds a predetermined limit value.
- the operating device (A) for a light-emitting means can change the operation of the driver circuit (LED driver) and/or of the power factor correction circuit if the ripple of the voltage at the energy store (Cbulk) exceeds a predetermined limit value.
- the voltage at the energy store (Cbulk) can be decreased if the ripple of the voltage at the energy store (Cbulk) exceeds a predetermined limit value.
- the control loop or the control parameters of the power factor correction circuit can be changed.
- the power output or output current by the driver circuit (LED driver) can be increased.
- driver circuits LED drivers
- the driver circuit (LED driver) is preferably a circuit with radiofrequency clocking having at least one actively clocked switch and one inductance (L) , which is charged and discharged by the radiofrequency clocking.
- the driver circuit (LED driver) is, for example, a buck converter, an isolated flyback converter or an inverter circuit.
- a plurality of light emitting means are fed directly or indirectly from the driver circuits (LED drivers) and, in the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded, at least some additional light-emitting means are connected to the driver circuit (LED driver) .
- LED driver driver circuit
- LED driver which is in the form of a buck converter is shown in figure 3.
- the LEDs in the LED string are actuated depending on the clocking of the switch S.
- the power output or output current by the driver circuit could be increased by clocking of the switch S with a increased duty factor.
- the light-emitting means can be an LED or a gas discharge lamp.
- the operating device (A) can transmit a fault message via an interface or optical signalling via the light-emitting means can take place in the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded.
- a power factor correction circuit feeds the energy store (Cbulk) and an energy store (Cbulk) feeds the driver circuit (LED driver) .
- the voltage at the energy store (Cbulk) is monitored, and the operation of the light-emitting means is performed depending on the detected ripple of the voltage at the energy store (Cbulk) a predetermined limit value.
- Temperature monitoring can be performed at the energy store (Cbulk) , the power factor correction circuit or the driver circuit (LED driver) and, as a result of a predetermined limit temperature being exceeded, a reduction in the power or current transmitted to the light-emitting means or else another change to the operation of the light-emitting means can be performed, and the value of the limit temperature to be predetermined can be set depending on the detected ripple of the voltage at the energy store (Cbulk) .
- Such limitation of current or power transmitted to the light-emitting means in case of high temperature may prevent damages from the operating device.
- a lighting unit having an operating device A for a light-emitting means comprising the power factor correction circuit according to the invention can be constructed.
- the life to be expected of the energy store (Cbulk) and therefore also of the entire operating device (1) can be estimated.
- the operating device (A) therefore has means for estimating the life to be expected of the energy store (Cbulk) .
- Said means preferably evaluate the detected ripple of the voltage at the energy store (Cbulk) , but it is optionally also additionally possible for further measurements or actuation variables to be evaluated.
- the operating device is designed for estimating the life to be expected of the energy store (Cbulk) on the basis of the detected ripple of the voltage at the energy store (Cbulk) .
- the operating device (A) can also have further power stages connected in series.
- an energy store can be arranged in each case between these power stages, it being possible for the voltage ripple of said energy stores to be monitored for identification of aging.
- the ripple of the voltage at the energy store (Cbulk) can be read, for example, via an analog-to-digital converter.
- This analog-to-digital converter can be part of an integrated control circuit, which can also influence the operation of the operating device.
- this integrated control circuit can actuate, for example, the actively clocked switch (S) of the power factor correction circuit or else the switch (es) of the driver circuit (LED driver) .
- the operating device (A) has an interface
- reading of the life to be expected may also be possible via this interface.
- the reading can for example automatically in the event that a predetermined value for the life to be expected is exceeded or else the present value for the life can be output in response to an external request via the interface.
- the operating device (A) can transmit a fault message via an interface since, as described, the fact that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded indicates that a specific life of the energy store (Cbulk) has been exceeded.
- a stepwise compensation of the ageing of the operating device, especially the energy store (Cbulk) as well as the ageing of the light-emitting means may be compensated and the light intensity of the light-emitting means may be held constant.
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2016/105035 WO2018085976A1 (fr) | 2016-11-08 | 2016-11-08 | Dispositif d'excitation à correction du facteur de puissance et compensation d'ondulation par changement du mode de fonctionnement |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3510836A1 true EP3510836A1 (fr) | 2019-07-17 |
EP3510836A4 EP3510836A4 (fr) | 2020-05-13 |
EP3510836B1 EP3510836B1 (fr) | 2023-01-04 |
Family
ID=62109019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16921213.1A Active EP3510836B1 (fr) | 2016-11-08 | 2016-11-08 | Dispositif d'excitation à correction du facteur de puissance et compensation d'ondulation par changement du mode de fonctionnement |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3510836B1 (fr) |
CN (1) | CN109952813B (fr) |
WO (1) | WO2018085976A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113381613B (zh) * | 2018-03-14 | 2022-10-04 | 海信视像科技股份有限公司 | 电源控制电路和显示设备 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7262584B2 (en) * | 2004-02-19 | 2007-08-28 | Analog Modules, Inc | Efficient fast pulsed laser or light-emitting diode driver |
US8193738B2 (en) * | 2009-08-07 | 2012-06-05 | Phihong Technology Co., Ltd. | Dimmable LED device with low ripple current and driving circuit thereof |
AT13441U1 (de) * | 2011-12-23 | 2013-12-15 | Tridonic Gmbh & Co Kg | Betriebsgerät mit leistungsfaktorkorrektur |
DE102012007477B4 (de) * | 2012-04-13 | 2024-02-22 | Tridonic Gmbh & Co Kg | Verfahren zum Betreiben eines LLC-Resonanzwandlers für ein Leuchtmittel, Wandler und LED-Konverter |
CN102833916B (zh) * | 2012-08-23 | 2014-10-15 | 冠捷显示科技(厦门)有限公司 | 一种直流调光型led驱动电路 |
DE102013216878A1 (de) * | 2013-08-23 | 2015-02-26 | Osram Gmbh | Zweistufiger getakteter elektronischer Energiewandler |
CN103917017B (zh) * | 2014-03-10 | 2016-08-31 | 上海大学 | 一种单级式无电解电容ac/dc led恒流驱动电源 |
US9271352B2 (en) * | 2014-06-12 | 2016-02-23 | Power Integrations, Inc. | Line ripple compensation for shimmerless LED driver |
CN104066247B (zh) * | 2014-06-24 | 2017-02-01 | 浙江生辉照明有限公司 | 一种led照明装置的驱动电路及调光控制方法 |
-
2016
- 2016-11-08 EP EP16921213.1A patent/EP3510836B1/fr active Active
- 2016-11-08 CN CN201680090640.3A patent/CN109952813B/zh active Active
- 2016-11-08 WO PCT/CN2016/105035 patent/WO2018085976A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
EP3510836A4 (fr) | 2020-05-13 |
CN109952813B (zh) | 2021-06-22 |
CN109952813A (zh) | 2019-06-28 |
WO2018085976A1 (fr) | 2018-05-17 |
EP3510836B1 (fr) | 2023-01-04 |
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