EP3028544A1 - Dispositif permettant l'alimentation, avec augmentation de la durée de vie, de moyens d'éclairage en énergie - Google Patents
Dispositif permettant l'alimentation, avec augmentation de la durée de vie, de moyens d'éclairage en énergieInfo
- Publication number
- EP3028544A1 EP3028544A1 EP14742240.6A EP14742240A EP3028544A1 EP 3028544 A1 EP3028544 A1 EP 3028544A1 EP 14742240 A EP14742240 A EP 14742240A EP 3028544 A1 EP3028544 A1 EP 3028544A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- energy
- current
- switch
- consumers
- value
- 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
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- 230000009467 reduction Effects 0.000 claims description 98
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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]
- H05B45/20—Controlling the colour of the light
- H05B45/24—Controlling the colour of the light using electrical feedback from LEDs or from LED modules
-
- 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
- H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices
-
- 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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/54—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits in a series array of LEDs
-
- 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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/56—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs
Definitions
- the invention relates to a circuit for supplying power to a sequential circuit of typically non-linear loads by means of a current source.
- the load is a series circuit of LEDs.
- This current-driven load preferably an LED series circuit, consisting of one to N elements and is to be partially short-circuited or dimmed.
- one switch For each of the non-linear loads connected in series, one switch is typically connected in parallel. These are each opened and / or closed.
- the current due to the resulting voltage change is a combination of the current of the current source and the changing voltage of a typically existing energy store and thus is no longer directly determined by the current source.
- a current source can be, for example, a current-controlled DC / DC converter.
- CLOSE case involves closing or reducing the ON resistance of one or more of the said switches: the resulting short-term current overshoot can have undesirable side effects until the subsequent load is damaged.
- the second case d. H.
- OPEN relates to the opening or the On-resistance increase of one or more of said switches: Until charging of a supporting energy storage to an increased energy content - in case of a capacitor to an increased voltage - there may be no or insufficient power available for the increased load. This can temporarily restrict the function. For example, there may be a noticeable reduction in the luminous intensity of an LED chain. For short transients, however, these are usually not perceived by LEDs as loads. However, if they are motor phases or relays, current demolition, as described, could have undesirable side effects.
- the device should be able to detect faulty consumers. This object is achieved with a device according to claim 0 and by means of a method according to claim 1.
- the invention proposes a method for checking a device for supplying energy to a circuit comprising at least one first consumer and at least one current source, wherein
- At least one first load is operated in a device according to one or more of the preceding claims,
- o has at least one detecting device capable of a) the current value and / or
- the device comprises at least one controller which opens or closes depending on at least one of the previously determined values at least one of the switches or On-resistance changed, with
- said controller simultaneously checks whether the time change a) of the current value and / or
- the Measured value can also be a binary, and / or at least one energy store is operated in a device according to one or more of the preceding claims,
- the device has at least one controller, depending on at least one of the previously determined values at least one of the switches opens or closes or changes its on resistance, wherein
- said controller simultaneously checks whether the time change a) of the remaining energy content of at least the energy storage and / or b) the rate of change of the energy content of at least the energy storage and / or
- a predetermined function as a function of the time profile of the OPENING or CLOSING or the change of the forward resistance within a predetermined tolerance band follows, wherein the energy content can also be determined in the form of a significant variable, and / or a measured value for the state of the energy storage is derived and / or the control function of the controller is changed in dependence on the deviation from such a desired function.
- At least one state value of the device is transmitted via an interface, wherein this state value can be one of the following state values or their temporally simple or higher derivative:
- a measured value corresponding to the current in at least one of the switching elements i) a measured value corresponding to the current in at least one of the switching elements.
- current source in the context of this invention generally means a source for the supply of electrical energy.
- a power source in the narrower sense alternatively offers a switching regulator. It is crucial that electrical energy can be introduced into the output node by the provision of electrical current and / or electrical voltage.
- At least one first consumer at least one power source and with a power supply unit for supplying power to the at least one first consumer (4), wherein the power supply unit is provided with
- At least one energy store (2) At least one energy store (2)
- energy can be fed into a first output node (7) by the at least one current source (1) and the at least one energy store (2),
- the at least one first consumer (4) can be supplied with energy at least temporarily via this output node (7),
- the energy storage device (2) is designed to supply energy when the energy supply of the Current source (1) is not sufficient and the energy store (2) still has sufficient energy content
- Energy content can also be determined in the form of determining a size representing him, and at least one controller (6), depending on at least one of the previously determined values opens or closes at least one of the switches (3) or changes its on-resistance.
- the first consumers (4) can be supplied by at least one partial current of the current source (1).
- the mean duration of closure or on-resistance reduction of a switch is increased at least temporarily with respect to a time period when the magnitude of the measured rate of change of current is below a predetermined value I m in_s P 2 and / or
- the average duration of closure or on-resistance reduction of a switch relative to a time period at least temporarily increase, if the amount of the measured higher time derivative of the current value is below a predetermined value I m m_ac2.
- the at least one switch is a power transistor.
- the power transistor is controllable by a regulator so that the current value detected by a measuring element during a switching operation can be used as at least one controlled variable of this regulator and the power transistor is designed to reduce the current value to a value smaller than 1.1 or 1.2 or 1 4 times or twice the value that flows through the consumers without switching.
- the power transistor is controllable by a regulator, so that the current value detected by a measuring element during a switching operation can be used as at least one controlled variable of this regulator, and the power transistor is designed to increase the current value to a value greater than 0.9 or 0.8 or Limit 0.5 or 0.3 times the value that flows through the consumers without switching operation.
- At least three consumers are connected in at least two parallel-connected series circuits, wherein at least one of these at least two series circuits is a series connection of at least two consumers (4) and
- the other series circuit of the at least two series circuits may be a single third consumer (4) or a series circuit of two or more consumers (4),
- At least one of said at least three consumers (4) at least one switch (3) for bypassing and / or canceling a bridging of the relevant consumer (4) is connected in parallel.
- the controller (6) is designed to control the common energy consumption of at least these two consumers so that it corresponds linearly or nonlinearly with a predetermined by the controller (6) or from outside the system value, and
- the controller (6) is designed to regulate individually the relative energy consumption of at least these two consumers for each of these consumers so that said common energy consumption, in terms of an effect within the allowable tolerances of the application in which the device is operated, does not depend on the individual relative energy consumptions of at least these two consumers.
- Device according to item 1.12, wherein the consumers are bulbs or light-emitting diodes in one or more light colors.
- the energy supply unit is designed to shape the energy conversion in energy conversion level and / or in the distribution to the consumers of one or more of the following parameters:
- At least one first consumer at least one power source and with a power supply unit for supplying power to the at least one first consumer (4), wherein the power supply unit is provided with
- At least one energy store (2) At least one energy store (2)
- energy can be fed into a first output node (7) by the at least one current source (1) and the at least one energy store (2),
- the at least one first consumer (4) can be supplied with energy at least temporarily via this output node (7),
- the energy store (2) is designed to deliver energy when the energy supply of the power source (1) is not sufficient and the energy store (2) still has sufficient energy content
- At least one energy and / or energy change determination device At least one energy and / or energy change determination device
- the energy and / or energy change determination device (14) is designed, a) the remaining energy content of the at least one energy store (2) and / or b) the rate of change of the energy content of the at least one energy store (2) and / or c) a higher temporal derivative of the energy content of the at least one energy storage device (2) in particular to be determined by measurement, wherein the energy content can also be determined in the form of determining a variable representing it, and at least one controller (6), depending on at least one of previously determined values opens or closes at least one of the switches (3) or changes its on resistance.
- the first consumers (4) can be supplied by at least one partial current of the current source (1).
- the mean duration of closure or on-resistance reduction of a switch is increased at least temporarily with respect to a time period when the magnitude of the measured rate of change of current is below a predetermined value I m in_s P 2 and / or
- the at least one switch is a power transistor.
- the power transistor is controllable by a regulator so that the current value detected by a measuring element during a switching operation can be used as at least one controlled variable of this regulator and the power transistor is designed to reduce the current value to a value smaller than 1.1 or 1.2 or 1 4 times or twice to limit the value flowing through the consumers without switching operation.
- the power transistor is controlled by a controller, so that the detected during a switching operation by a measuring element current value is used as at least one controlled variable of this regulator, and the power transistor is designed, the current value to a value greater than the 0.9 or 0 , 8 or 0.5 or 0.3 times that
- the time interval between the switching on and / or off or the change of the on resistance of at least a first switch and the switching on and / or off or the change of the on resistance of at least one second switch a minimum value t min _ s not to fall below.
- At least one of these at least two series circuits is a series connection of at least two consumers (4) and
- the other series circuit of the at least two series circuits may be a single third consumer (4) or a series circuit of two or more consumers (4),
- energy can be fed into at least one current source (1) and an energy store (2) into a first output node (7)
- the at least three consumers (4) are at least temporarily supplied with energy and
- the controller (6) is designed to control the common energy consumption of at least these two consumers so that it corresponds linearly or nonlinearly with a predetermined by the controller (6) or from outside the system value, and
- the controller (6) is designed to regulate individually the relative energy consumption of at least these two consumers for each of these consumers so that said common energy consumption, in terms of an effect within the allowable tolerances of the application in which the device is operated, does not depend on the individual relative energy consumptions of at least these two consumers.
- At least one first consumer at least one power source and with a power supply unit for supplying power to the at least one first consumer (4), wherein the power supply unit is provided with
- At least one energy store (2) At least one energy store (2)
- energy can be fed into a first output node (7) by the at least one current source (1) and the at least one energy store (2),
- the at least one first consumer (4) can be supplied with energy at least temporarily via this output node (7),
- the energy store (2) is designed to deliver energy when the energy supply of the power source (1) is not sufficient and the energy store (2) still has sufficient energy content, at least one to the at least one first consumer (4) connected in parallel switch (3) for bridging and / or canceling a bridging of the switch (3) associated with the first consumer (4) and
- controller (6) which opens or closes at least one of the switches (3) or changes its on resistance as a function of at least one of the previously determined values.
- At least one current-determining device (5) and / or an energy and / or energy change-determining device which is designed a) the remaining energy content of the at least one energy store (2) and / or
- the energy content can also be determined in the form of determining a size representing him.
- the first consumers (4) can be supplied by at least one partial current of the current source (1).
- the average duration of the closure or State reduction of a switch based on a period of time at least temporarily reduce, if the measured current value is above a predetermined value Imax2 and / or
- the mean duration of closure or on-resistance reduction of a switch is increased at least temporarily with respect to a time period when the magnitude of the measured rate of change of current is below a predetermined value I m in_s P 2 and / or
- the power supply unit is designed, the average duration of the closure or conflußwider- state reduction of a switch based on a period of time to reduce at least temporarily, when the measured energy content of the energy storage device 2 is below a predetermined value U es _min2 and / or
- the at least one switch is a power transistor.
- the power transistor is controllable by a regulator so that the current value detected by a measuring element during a switching operation can be used as at least one controlled variable of this regulator and the power transistor is designed to reduce the current value to a value smaller than 1.1 or 1.2 or 1 4 times or twice the value that flows through the consumers without switching.
- the power transistor is controllable by a regulator, so that the current value detected by a measuring element during a switching operation can be used as at least one controlled variable of this regulator, and the power transistor is designed to increase the current value to a value greater than 0.9 or 0.8 or Limit 0.5 or 0.3 times the value that flows through the consumers without switching operation.
- no second switch is to be switched on or off or changed in its forward resistance and / or
- the time interval between the switching on and / or off or the change of the on resistance of at least a first switch and the switching on and / or off or the change of the on resistance of at least one second switch a minimum value t min _ s not to fall below.
- At least one of these at least two series circuits is a series circuit of at least two consumers (4) and
- the other series connection of the at least two series Circuits may be a single third consumer (4) or a series circuit of two or more consumers (4),
- the controller (6) is designed to control the common energy consumption of at least these two consumers so that this linear or with a predetermined by the controller (6) or from outside the system value nonlinear, and
- the controller (6) is designed to regulate individually the relative energy consumption of at least these two consumers for each of these consumers so that said common energy consumption, in terms of an effect within the allowable tolerances of the application in which the device is operated, does not depend on the individual relative energy consumptions of at least these two consumers.
- the consumers are bulbs or light-emitting diodes in one or more light colors.
- the energy supply unit is designed to shape the energy conversion in energy conversion level and / or in the distribution to the consumers of one or more of the following parameters:
- At least one first consumer at least one power source and with a power supply unit for supplying power to the at least one first consumer (4), wherein the power supply unit provided With
- At least one energy store (2) At least one energy store (2)
- energy can be fed into a first output node (7) by the at least one current source (1) and the at least one energy store (2),
- the at least one first consumer (4) can be supplied with energy at least temporarily via this output node (7),
- the energy store (2) is designed to deliver energy when the energy supply of the power source (1) is not sufficient and the energy store (2) still has sufficient energy content
- the energy and / or energy change determination device (14) is designed, a) the remaining energy content of the at least one energy store (2) and / or
- the power supply unit is designed to close no switch or reduce its on-resistance
- the first consumers (4) can be supplied by at least one partial current of the current source (1).
- the at least one switch is a power transistor.
- the power transistor is controllable by a regulator so that the current value detected by a measuring element during a switching operation can be used as at least one controlled variable of this regulator and the power transistor is designed to reduce the current value to a value smaller than 1.1 or 1.2 or 1 4 times or twice the value that flows through the consumers without switching.
- the power transistor can be controlled by a regulator, so that the current value detected by a measuring element during a switching operation is determined to be at least one control value. is large of this regulator usable, and the power transistor is designed to limit the current value to a value greater than the 0.9 or 0.8 or 0.5 or 0.3 times the value flowing through the consumers without switching operation.
- At least one of these at least two series circuits is a series connection of at least two consumers (4) and
- the other series circuit of the at least two series circuits may be a single third consumer (4) or a series circuit of two or more consumers (4),
- the controller (6) is designed to control the common energy consumption of at least these two consumers so that it corresponds linearly or nonlinearly with a predetermined by the controller (6) or from outside the system value, and
- the controller (6) is designed to regulate individually the relative energy consumption of at least these two consumers for each of these consumers so that said common energy consumption, in terms of an effect within the allowable tolerances of the application in which the device is operated, does not depend on the individual relative energy consumptions of at least these two consumers.
- Apparatus according to item 4.11 wherein the consumers are bulbs or light-emitting diodes in one or more light-emitting colors.
- the energy supply unit is designed to shape the energy conversion in energy conversion level and / or in the distribution to the consumers of one or more of the following parameters:
- At least one first consumer at least one power source and with a power supply unit for supplying power to the at least one first consumer (4), wherein the power supply unit is provided with
- At least one energy store (2) At least one energy store (2)
- energy can be fed into a first output node (7) by the at least one current source (1) and the at least one energy store (2),
- the at least one first consumer (4) can be supplied with energy at least temporarily via this output node (7),
- the energy store (2) is designed to deliver energy when the energy supply of the power source (1) is not sufficient and the energy store (2) still has sufficient energy content
- the energy content can also be determined in the form of determining a variable representing it, and at least one controller (6) depending on at least one of previously determined values opens or closes at least one of the switches (3) or changes its on-resistance,
- the power supply unit is configured to at least temporarily reduce the mean duration of closure or on-resistance reduction of a switch with respect to a time period when the measured current value is above a predetermined value Imax2 and / or
- the average duration of the closure or State reduction of a switch at least temporarily, with respect to a time period when the magnitude of the measured rate of current change is above a predetermined value I m ax_s P 2 and / or at least temporarily reducing the average duration of closure or on-resistance reduction of a switch over a period of time if the amount of the measured higher time derivative of the current value is above a predetermined value I ma x_ac2 and / or
- the mean duration of closure or on-resistance reduction of a switch is increased at least temporarily with respect to a time period when the magnitude of the measured rate of change of current is below a predetermined value I m in_s P 2 and / or
- first consumer (4) it has more than one first consumer (4) and that these first consumers (4) are connected in series and in that the first consumers (4) can be supplied by at least one partial current of the current source (1).
- the at least one switch is a power transistor.
- the power transistor can be controlled by a regulator so that it is controlled by a measuring device during a switching process.
- selement detected current value is used as at least one controlled variable of this regulator and the power transistor is designed to limit the current value to a value less than 1.1 or 1.2 or 1.4 times or twice that value, without switching operation by the consumer flows.
- the power transistor is controllable by a regulator, so that the current value detected by a measuring element during a switching operation can be used as at least one controlled variable of this regulator, and the power transistor is designed to increase the current value to a value greater than 0.9 or 0.8 or Limit 0.5 or 0.3 times the value that flows through the consumers without switching operation.
- At least one of these at least two series circuits is a series connection of at least two consumers (4) and
- the other series circuit of the at least two series circuits may be a single third consumer (4) or a series circuit of two or more consumers (4),
- the at least three consumers (4) can be supplied with energy at least temporarily via this output node (7), and wherein at least one of said at least three consumers (4) at least one switch (3) for bypassing and / or canceling a bridging of the relevant consumer (4) is connected in parallel.
- the controller (6) is designed to control the common energy consumption of at least these two consumers so that it corresponds linearly or nonlinearly with a predetermined by the controller (6) or from outside the system value, and
- the controller (6) is designed to regulate individually the relative energy consumption of at least these two consumers for each of these consumers so that said common energy consumption, in terms of an effect within the allowable tolerances of the application in which the device is operated, does not depend on the individual relative energy consumptions of at least these two consumers.
- Apparatus according to item 5.10 wherein the consumers are bulbs or light-emitting diodes in one or more light-emitting colors.
- the energy supply unit is designed to shape the energy conversion in energy conversion level and / or in the distribution to the consumers of one or more of the following parameters:
- At least one first consumer at least one power source and with a power supply unit for supplying power to the at least one first consumer (4), wherein the power supply unit is provided with
- At least one energy store (2) At least one energy store (2)
- energy can be fed into a first output node (7) by the at least one current source (1) and the at least one energy store (2),
- the at least one first consumer (4) can be supplied with energy at least temporarily via this output node (7), - wherein the energy store (2) is designed to deliver energy when the energy supply of the power source (1) is not sufficient and the energy store (2) still has sufficient energy content,
- the time interval between the switching on and / or off or the change of the forward resistance of at least one first switch and the switching on and / or off or the change of the forward resistance of at least one second switch is not to fall below a minimum value t min s .
- the first consumers (4) can be supplied by at least one partial current of the current source (1).
- the average duration of closure or on-resistance reduction of a switch relative to a period of time at least temporarily, when the magnitude of the measured rate of current change is above a predetermined value I m ax_s P 2 and / or the average duration of closure or on-resistance reduction of a switch in relation to a time period, at least temporarily, if the magnitude of the measured higher time derivative of the current value is above a predetermined value I m ax_ac2 and / or increasing the mean duration of closure or on-resistance reduction of a switch at least temporarily with respect to a time period when the measured current value is below a predetermined value I min 2 and / or
- the mean duration of closure or on-resistance reduction of a switch is increased at least temporarily with respect to a time period when the magnitude of the measured rate of change of current is below a predetermined value I m in_s P 2 and / or
- the at least one switch is a power transistor.
- the power transistor is controllable by a regulator so that the current value detected by a measuring element during a switching operation can be used as at least one controlled variable of this regulator and the power transistor is designed to reduce the current value to a value smaller than 1.1 or 1.2 or 1 4 times or twice the value that flows through the consumers without switching.
- the power transistor is controllable by a regulator, so that the current value detected by a measuring element during a switching operation can be used as at least one controlled variable of this regulator, and the power transistor is designed to increase the current value to a value greater than 0.9 or 0.8 or Limit 0.5 or 0.3 times the value that flows through the consumers without switching operation.
- At least one of these at least two series circuits is a series connection of at least two consumers (4) and
- the other series circuit of the at least two series circuits may be a single third consumer (4) or a series circuit of two or more consumers (4),
- At least one of said at least three consumers (4) at least one switch (3) for bypassing and / or canceling a bridging of the relevant consumer (4) is connected in parallel.
- the controller (6) is designed to control the common energy consumption of at least these two consumers so that it corresponds linearly or nonlinearly with a predetermined by the controller (6) or from outside the system value, and
- the controller (6) is designed to regulate individually the relative energy consumption of at least these two consumers for each of these consumers so that said common energy consumption, in terms of an effect within the allowable tolerances of the application in which the device is operated, does not depend on the individual relative energy consumptions of at least these two consumers.
- the consumers are bulbs or LEDs in one or more fluorescent colors.
- the energy supply unit is designed to shape the energy conversion in energy conversion level and / or in the distribution to the consumers of one or more of the following parameters:
- At least one first consumer at least one power source and with a power supply unit for supplying power to the at least one first consumer (4), wherein the power supply unit is provided with
- At least one energy store (2) At least one energy store (2)
- energy can be fed into a first output node (7) by the at least one current source (1) and the at least one energy store (2),
- the at least one first consumer (4) can be supplied with energy at least temporarily via this output node (7),
- the energy store (2) is designed to deliver energy when the energy supply of the power source (1) is not sufficient and the energy store (2) still has sufficient energy content
- the current change determination device (5) is designed, a) the rate of change of current and / or b) a higher time derivative of the current value by said first consumer (4) or a sequential connection of several first consumers (4)
- the energy and / or energy change determination device (14) is designed, a) the remaining energy content of the at least one energy store (2) and / or b) the rate of change of the energy content of the at least one energy store ( 2) and / or
- the energy content can also be determined in the form of determining a variable representing it, and at least one controller (6) depending on at least one of previously determined values opens or closes at least one of the switches (3) or changes its on resistance.
- At least one current-determining device (5) which is designed to determine the current value through said first consumer (4) or a sequential connection of a plurality of first consumers (4).
- the first consumers (4) can be supplied by at least one partial current of the current source (1).
- the measured current rate of change is above a predetermined value I m ax_s P 2 and / or at least temporarily reduce the mean duration of closure or on-resistance reduction of a switch relative to a time period when the magnitude of the measured higher time derivative of the current value is above a predetermined value I m ax_ac2 is and / or
- the mean duration of closure or on-resistance reduction of a switch is increased at least temporarily with respect to a time period when the magnitude of the measured rate of change of current is below a predetermined value I m in_s P 2 and / or
- the at least one switch is a power transistor.
- the power transistor is controllable by a regulator so that the current value detected by a measuring element during a switching operation can be used as at least one controlled variable of this regulator and the power transistor is designed to reduce the current value to a value smaller than 1.1 or 1.2 or 1 4 times or twice the value that flows through the consumers without switching.
- the power transistor is controllable by a regulator, so that the current value detected by a measuring element during a switching operation can be used as at least one controlled variable of this regulator, and the power transistor is designed to increase the current value to a value greater than 0.9 or 0.8 or Limit 0.5 or 0.3 times the value that flows through the consumers without switching operation.
- no second switch is to be switched on or off or changed in its forward resistance and / or
- the time interval between the switching on and / or off or the change of the on resistance of at least a first switch and the switching on and / or off or the change of the on resistance of at least one second switch a minimum value t min _ s not to fall below.
- At least one of these at least two series circuits is a series circuit of at least two consumers (4) and
- the other series connection of the at least two series circuits can be a single third consumer (4) or a series circuit of two or more consumers (4),
- energy can be fed into at least one current source (1) and an energy store (2) into a first output node (7), - About this output node (7), the at least three consumers (4) are at least temporarily supplied with energy and
- At least one of said at least three consumers (4) at least one switch (3) for bridging and / or to cancel a bridging of the relevant consumer (4) is connected in parallel.
- the controller (6) is designed to control the common energy consumption of at least these two consumers so that it corresponds linearly or nonlinearly with a predetermined by the controller (6) or from outside the system value, and
- the controller (6) is designed to individually regulate the relative energy consumption of at least these two consumers for each of these consumers so that said common energy consumption, in terms of an effect within the allowable tolerances of the application, in which the device is operated, does not depend on the individual relative energy consumption of at least these two consumers.
- Figure 1 is a block diagram of the device according to the invention
- Figure 2 shows an exemplary very simple controller for a
- FIG. 3 shows an embodiment of the device according to the invention with two parallel strands
- Figure 4 shows an embodiment for controlling a color controllable RGB lighting.
- the object is achieved by an evaluation of the current in the loads 4 during the switching transition to the switching elements 3 by a current-measuring element 5 or by a regulator 6.
- the task of the controller 6 is to evaluate either the voltage or the voltage change rate dU / dt at the energy storage 2 or the current change at the measuring element 5 or at both components in order to predetermine the operation within a predefined operating state space, to check and thus to ensure.
- the described critical faults in OPENING and CLOSING see above can thus be prevented.
- an uncontrolled increase or reduction of the current during the transient transitions in the system can be prevented or at least controlled in its effect controlled.
- the life of the diodes can thereby be significantly increased by attenuating peak currents through the device described and controlled controlled.
- Another advantage of the described device and the described method is the possibility of an adaptive control under given boundary conditions such.
- the current source 1 in FIG. 1 supplies the current and the energy for the consumers 4, 10 connected in series. In this case, these are, for example, a first light-emitting diode 4 and a second light-emitting diode 10. LEDs will be used below for light-emitting diodes.
- the energy storage device 2 in this case is a capacitor 2, which buffers the voltage at the output node 7 of the current source 1. This happens in this exemplary case via an optional series resistor 14 between the output node 7 of the current source 1 and the terminal node 8 of the capacitor 2, which acts as an energy storage 2.
- the other pole of the capacitor 2 is connected in this example 5 to ground.
- the first LED 4 and the second LED 10 each have a first switch 3 and a second switch 9 correspondingly associated with each other, which by CLOSING or OPENING bridge the LEDs 4, 10 and thus the energy distribution within the LED chain from these LEDs 4, 10 can change.
- the energy source that is, the current source 1
- the current through the said load chain can be measured by detecting the voltage drop between the current detection node 11 and ground.
- a shunt resistor 5 instead of a shunt resistor 5, of course, other current measuring methods such as a
- the resistor 14 can be used at the energy storage 2 for the evaluation, since the current in the energy storage 2 into or out of this with the current through the load chain 4, 10 and the switches 3, 9 in total must give the current source current.
- the signal 11 detected in this way is fed to the controller 6, which typically also contains the energy content of the energy store 2. For example, by a potential measurement of the node 8 of a capacitor 2, monitored. In addition, it makes sense to also monitor the voltage of the feed node 7, whereby by means of the aforementioned second shunt resistor 14, a measurement of the current into and out of the energy storage is possible.
- the energy content of the capacitor or the energy storage device 2 can be used to determine the rates of change of the energy content.
- Figure 2 shows an implementation of a system in which only one consumer 10 in a chain of two Nutzsuitern 4, 10 is regulated.
- the invention also includes much more complicated variants of the regulator 6, which will become apparent to those skilled in the art from the spirit of the invention.
- the following describes some of the possible extensions of such a controller.
- the controller 6 now compares the voltage drop across the exemplary shunt resistor 5 at the node 11 with an exemplary reference voltage V ref , which acts as a predefinable setpoint reference.
- the controller can be designed, for example, as a P, PI, PID or PD controller. More complex control transfer functions of the controller 6 with multi-dimensional, ie multi-parameter input and output signals are of course conceivable and, especially in more complicated topologies, as described below, makes sense.
- the device according to the invention thus serves to supply a circuit with at least one consumer. It has at least one power source 1.
- the energy supply is via at least one energy storage 2 in the form of z. B. a capacitor, batteries, etc. stabilized. In this energy storage 2, it may also be a coil, which is for example inserted serially into the circuit.
- Both current source 1 and energy storage 2 feed energy into a first output node 7. About said output node 7, said consumers 4 are at least temporarily supplied with energy. It is also conceivable that the system is not always active.
- the energy storage 2 always supplies energy when the energy supply of the power source 1 for the supply of the consumer 4, 10 is not sufficient and the energy storage 2 still has sufficient energy content.
- This sufficient energy content is permanently measured and predicted by the controller 6 and suitable measuring points 8, 7 in the system. If the energy removal by the loads 4, 10 from the combined energy source from the current source 1 and the energy store 2 is too high or too low, then the total load 4, 10 is changed as a manipulated variable for the correction of this situation.
- This is another essential inventive idea. Therefore, in the case of two consumers to at least one of said two consumers 4 at least one switch 9 must be connected in parallel. The latter can thus bridge at least one of the consumers 10 in order to lower the internal resistance of the total load of the consumers 4, 10 as required or to build up such a bridge. lift to raise the internal resistance of the total load of the consumer 4, 10.
- the device according to the invention has a measuring device 5 which is capable of detecting the current value for detecting the electric current flowing through the total load 4, 10 and thus, as a rule, also the rate of change of current or a higher time derivative of the current through the sequential connection of the said consumers 4, 10.
- the measurement of the derivatives allows a prognosis of the current development and thus a timely counter-regulation of the load 4, 10. It also makes sense to capture the remaining energy content of the energy storage device 2 by means of at least one further measuring device 14.
- the energy conversion in the total load of the consumers 4, 10 can be calculated from the voltage drop between the nodes 7 and 11 and that between the node 11 and ground.
- the control by the controller 6 is effected in such a way that, as already described, it opens or closes at least one of the switches 3, 9 depending on at least one of the previously determined values or changes its forward resistance so that the tolerance values of the current do not be exceeded or fallen below.
- one of the switches 3, 9 it does not make sense for one of the switches 3, 9 to be opened or increased in its forward resistance if the measured current through the entirety of the consumers 4, 10 is below a predetermined value I min i.
- the analog 20 applies to the case when the magnitude of the measured rate of current rise is below a predetermined value Imin_spi or when the magnitude of the measured higher time derivative of the current is below a predetermined value I m in_aci.
- the average duration of the closure or ON resistance reduction of one of the switches 3, 9 is reduced relative to a time period when the magnitude of the measured current slew rate is above a predetermined value I m ax_s P 2 or if the magnitude of the measured higher time derivative of the current is above a predetermined one Value I m ax_ac2 lies.
- the average duration of the closure or ON resistance reduction of one of the switches 3, 9 is increased at least temporarily with respect to a time period when the measured current is below a predetermined value Imin2, the magnitude of the measured current slew rate is below a predetermined value I m in_s P 2, or the amount of the measured higher time derivative of the current is below a predetermined value I m m_ac2.
- the mean duration of the closure or on-resistance reduction of one of the switches 3, 9 is at least temporarily reduced with respect to a time period if the measured energy content of the energy store 2 is below a predetermined value W es _min2 or the amount of the measured energy content change rate of the energy store 2 above a predetermined value W it _max_sp2 or the amount of the measured higher time derivative of the energy content of the energy storage is above a predetermined value W es _ m ax_ac2.
- the mean duration of the closure or fürwiderstandsverrin- ing one of the switches 3, 9 relative to a time period increases at least temporarily, if the measured energy content of the energy storage 2 above a predetermined value U es _min3 or the amount of measured Energy content change rate is below a predetermined value U it _max_sp3 or the average duration of the closure or fürflußwiderstandsverrin- ing one of the switches 3, 9 is increased at least temporarily with respect to a time period when the amount of the measured higher time derivative of the energy content of the energy storage 2 below one predetermined value U it is _min_ac3.
- the switches 3, 9, which are typically power transistors, are controlled by a regulating element 6, a regulator 6. This is done so that the current flowing through the entirety of the loads 4, 10 is detected during a switching operation by the measuring element 5 and is used as a controlled variable of this regulating element 6.
- the regulation is done by a power transistor 3, 9, which then limits the current, for example, to a value less than 1.1 or 1.2 or 1.4 times or twice the value flowing through the consumers without switching operation. This means that the overshoot of the current is thereby limited to 10% or 20% or 40% or 100%.
- an undershoot is limited, for example, to 10%, 20%, 50% or 70% of this value by the power transistor 3, 9 is suitably controlled by the regulating element 6 again.
- the current through the entirety of the consumers 4, 10 is likewise detected during a switching operation by the measuring element 5 and used as a controlled variable of the regulating element 6.
- each consumer line has its own current measuring device 5, 21.
- the switches 3, 9, 16, 18 are controlled by the controller 6 via the control lines 12, 13, 23, 24.
- shunt resistors 14, 22, 5, 21 are used as exemplary current measuring points.
- the corresponding potentials of the associated nodes 7, 8, 20, 11, 25 are supplied as exemplary input signals to the controller 6, which generates therefrom the control signals 12, 13, 23, 24 for the switches 3, 9, 16, 18.
- Such a switch which would be serial to all consumers, is not shown in the figures.
- a switching operation from one load to the other it is useful that by simultaneously CLOSING or simultaneously reducing the on resistance of a first switch, for example the switch 3, and simultaneously OPENING or simultaneously increasing the on resistance of a second switch, for example the switch 16, the current in the measuring element 22 or the rate of change of current in the measuring element 22 or a higher time derivative of the rate of change of current in the measuring element 22 remains within the predetermined or programmed range.
- the measuring element 22 may also consist of several such elements 5, 21 in the individual branches with subsequent summation or a vectorial range specification or in a measuring element 22 in star points.
- a source 1 can be advantageously brought about by modulation of the switching elements 3 by the controller 6, a predetermined current distribution in these loads.
- This modulation of the switching elements 3 by the controller 6 can be done for example by means of analog impedance variations or discrete-time by PWM control. This is of particular interest because otherwise the current distribution on the at least two branches can change uncontrollably.
- the number of switching operations in the consumer network that may overlap can be limited. It thus makes sense that during switching on and / or off, ie the OPENING or CLOSING, or the change of the forward resistance of a first switch, for example the switch 4, no second switch or only a predetermined number of second switch is turned on or off or is changed in his / her on-resistance.
- An advantageous design of this overlap represents the simultaneous OPENING and CLOSING of two N switches N 3 in such a way that the predetermined nominal value remains constant during the transitions.
- a device according to the invention can also have a plurality of branches of serial connections of consumers connected in parallel, these in turn each individually representing a device according to the invention.
- a branch may be a device not according to the invention if its influence is influenced by the control capabilities of the invention.
- gresen branch can be compensated. In the simplest case, it may therefore be a single consumer, which is connected in parallel to a series circuit of two consumers or even only a single consumer and possibly also has a switch. In such a consumer network, there may be other energy stores and power sources at various points, which possibly stabilize and limit the power in individual branches.
- the opening and closing operation of a switch can be interrupted by the controller 6, if the system response in the form of the temporal current change of one of the currents at one or more of the measuring points 14, 22, 5, 21 does not occur within a tolerance band around a temporal change setpoint function.
- the tolerance band may also be a tolerance band with a multidimensional cross section. In this case, for example, a four-dimensional cross-section.
- the controller 6 can then, depending on the specification on the one hand change the controller function or even cancel the opening and closing process completely and / or other switches OPEN or CLOSE or otherwise change their state or change the topology of the device.
- a PWM modulation of the activity of the consumers 4, 10, 17 is used. If the three consumers 4, 10, 17 are, for example, three LEDs in the three primary colors red, yellow, blue, then the Y signal will be the brightness of all three diodes, with M and K the color vector, ie relative brightness of the three diodes regulated to each other. Since the perception by humans is strongly non-linear, it makes sense if, if necessary, a correction of the color vector by a correction function of the controller 6 takes place as a function of the Y signal and further brightness-determining parameters.
- a brightness-determining parameter in this sense would be, for example, the energy supply of the power source and the energy content of the energy storage 2 and their derivatives.
- the application of any other color space models as a YMK color space is conceivable. Examples would be
- the LMS color space the physiological color space, which is based on the spectral sensitivities of the L, M, S cones
- the XYZ color space the standard color space originally set up by the CIE, constructed on computational coordinates X, Y, Z that are created from cone sensitivities
- HSV color space with the variants HSL, HSB, HSI - design which are typically used for documentation of painting and in video art • the Lab color space - a CIE color space derived from XYZ, which also includes all perceptible colors; and whose further development is the DIN99 color space, the LCh ° color space, which does not designate a further color space in the actual sense, but is a representation of HSV, LUV or LAB in polar coordinates,
- the controller 6 now ensures that
- the brightness of the illumination and thus the energy consumption of the loads 4, 10, 17 corresponds to the amount of energy provided by the power source 1 and the energy storage 2, and
- FIG. 4 only shows the regulation of the color reflection from the object O.
- the controller can exchange state data via an interface IF with a control device, for example a data processing system.
- These status data can be, for example, error states, switching states of the switching signals 13, 12, 23 and thus control values, values of the sensors 26 and the current measuring points 14, 5 and voltages at the nodes 7, 11.
- Another control parameter may be the temperature of the system or parts of the system, in particular the temperature of the consumer 4, 10, 17 or the switch 13, 12, 23 or the power source 1.
- a corresponding sensor is not shown in FIG. 4, but is likewise evaluated by the controller 6.
- a typical control algorithm of the controller 6 is then selected so that always the energy extraction from the two energy sources, the current source 1 and the energy storage 2 corresponds to a maximum value or an internally or externally predetermined value or the current value of a predetermined external control function of the time, if the energy removal is not limited by other factors, for example, in this example of the brightness preset or the temperature of system components. For example, it is conceivable that a constant value is set or that at certain night times in the case of LEDs different brightnesses are set as loads.
- the device has a measuring device 5 which is capable of determining the current value and / or the rate of change of current and / or a higher time derivative of the current value at least by a first consumer or a sequential interconnection of a plurality of first consumers 4 or a subnetwork of the first To measure consumers 4.
- the device has a regulator 6 which, depending on one of the previously determined values, opens or closes one of the switches 3 or changes its forward resistance.
- a measuring device 5 which is capable of determining the current value and / or the rate of change of current and / or a higher time derivative of the current value at least by a first consumer or a sequential interconnection of a plurality of first consumers 4 or a subnetwork of the first To measure consumers 4.
- the device has a regulator 6 which, depending on one of the previously determined values, opens or closes one of the switches 3 or changes its forward resistance.
- devices with multiple switches and loads are conceivable, as described above. ben.
- the said controller 6 typically checks at the same time whether the time change of the current value and / or the rate of change of current and / or a higher time derivative of the current value by said consumer or a sequential interconnection of a plurality of first consumers 4 or a subnetwork according to the invention takes place in accordance with specifications ,
- the check with respect to a specification is carried out in such a way that the value to be checked must follow a predetermined desired function as a function of the time course of the OPENING or CLOSING or the change of the ON resistance within a predetermined tolerance band.
- the controller 6 or another component for example a ⁇ -controller, which receives data from the controller 6 via an interface IF, determines a measured value for the state of the consumer.
- the control function of the controller 6 is changed depending on the deviation from such a desired function.
- the measured value determined in this way can also be a binary measured value. For example, it is conceivable that the measured value means "defective" or "not defective".
- an energy storage device 2 can be operated in such a way that this device has a measuring device which is capable of: - the remaining energy content of the energy storage device 2 and / or the rate of change of the energy content of at least the energy storage device 2 and / or to measure a higher time derivative of the energy content of at least said energy storage device 2.
- the device typically has a regulator 6, which typically opens or closes one of the switches 3 or changes its forward resistance as a function of at least one of the previously determined values.
- said controller 6 simultaneously checks whether the change with time of the remaining energy content of the energy store 2 and / or the rate of change of the energy content of the energy store 2 and / or a higher time derivative of the energy content of the energy store 2 follows a predetermined function.
- This predetermined function is typically dependent on the time course of the OPEN or CLOSE or the change in the on-resistance. The measured value must not leave a specified tolerance band.
- the energy content can again be determined in the form of a significant size. For example, it is conceivable to integrate only the current into or out of a capacitor, which serves as an energy store, and to deduce the state of charge. Similarly, the capacitor voltage could be measured.
- a measured value for the state of the energy store can be derived from this again.
- the control function of the controller 6 can be changed again depending on the deviation from such a desired function. Since this information may be important for higher-level systems, it makes sense to transmit these state values of the device via an interface IF to the higher-level system, for example a computer system.
- o is a control value of one of the outputs of the controller
- o is an internal control value of the controller
- o is a measured value or state value of one of the sensors 26
- o is the current value of one of the current measuring points 14, 5
- o is the voltage value at one of the nodes 7, 11, o o the difference between the control value and the measured value at the controller 6,
- o is the state of one or more of the involved switching elements 3
- o a measured value corresponding to the voltage across at least one of the switching elements 3
- o a measured value corresponding to the current in at least one of the switching elements 3 as values be transmitted.
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14742240.6A EP3028544B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de, et réduction de pointes de courant/tension en, diodes électroluminescentes |
EP16189873.9A EP3128812B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pics de courant/voltage |
EP16189871.3A EP3128811B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
EP16189870.5A EP3128810B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
EP16189851.5A EP3128809B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pics de courant/voltage |
EP16189877.0A EP3128813B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13178386.2A EP2833699A1 (fr) | 2013-07-29 | 2013-07-29 | Dispositif d'alimentation de, et réduction de pointes de courant/tension en, diodes électroluminescentes |
PCT/EP2014/065943 WO2015014713A1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif permettant l'alimentation, avec augmentation de la durée de vie, de moyens d'éclairage en énergie |
EP14742240.6A EP3028544B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de, et réduction de pointes de courant/tension en, diodes électroluminescentes |
Related Child Applications (10)
Application Number | Title | Priority Date | Filing Date |
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EP16189870.5A Division EP3128810B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
EP16189870.5A Division-Into EP3128810B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
EP16189877.0A Division EP3128813B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
EP16189877.0A Division-Into EP3128813B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
EP16189871.3A Division EP3128811B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
EP16189871.3A Division-Into EP3128811B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
EP16189873.9A Division-Into EP3128812B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pics de courant/voltage |
EP16189873.9A Division EP3128812B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pics de courant/voltage |
EP16189851.5A Division EP3128809B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pics de courant/voltage |
EP16189851.5A Division-Into EP3128809B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pics de courant/voltage |
Publications (2)
Publication Number | Publication Date |
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EP3028544A1 true EP3028544A1 (fr) | 2016-06-08 |
EP3028544B1 EP3028544B1 (fr) | 2018-01-03 |
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EP13178386.2A Withdrawn EP2833699A1 (fr) | 2013-07-29 | 2013-07-29 | Dispositif d'alimentation de, et réduction de pointes de courant/tension en, diodes électroluminescentes |
EP16189851.5A Active EP3128809B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pics de courant/voltage |
EP16189877.0A Active EP3128813B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
EP16189873.9A Active EP3128812B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pics de courant/voltage |
EP16189870.5A Active EP3128810B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
EP16189871.3A Active EP3128811B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
EP14742240.6A Active EP3028544B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de, et réduction de pointes de courant/tension en, diodes électroluminescentes |
Family Applications Before (6)
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EP13178386.2A Withdrawn EP2833699A1 (fr) | 2013-07-29 | 2013-07-29 | Dispositif d'alimentation de, et réduction de pointes de courant/tension en, diodes électroluminescentes |
EP16189851.5A Active EP3128809B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pics de courant/voltage |
EP16189877.0A Active EP3128813B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
EP16189873.9A Active EP3128812B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pics de courant/voltage |
EP16189870.5A Active EP3128810B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
EP16189871.3A Active EP3128811B1 (fr) | 2013-07-29 | 2014-07-24 | Dispositif d'alimentation de moyens d'eclairage en energie de maniere a augmenter leur duree de vie, avec diminution des pointes de courant/voltage |
Country Status (3)
Country | Link |
---|---|
US (1) | US9686830B2 (fr) |
EP (7) | EP2833699A1 (fr) |
WO (1) | WO2015014713A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3040853A1 (fr) * | 2015-09-07 | 2017-03-10 | Stmicroelectronics (Grenoble 2) Sas | Optical pulse emitter |
CN105611679B (zh) * | 2016-03-18 | 2017-06-16 | 黎辉 | 一种led灯单火线智能控制装置 |
JP6799939B2 (ja) * | 2016-04-22 | 2020-12-16 | ローム株式会社 | 発光素子駆動用半導体集積回路、発光素子駆動装置、発光装置、車両 |
US9769898B1 (en) * | 2016-12-08 | 2017-09-19 | Nxp B.V. | Adjusted pulse width modulation (PWM) curve calculations for improved accuracy |
JP6988467B2 (ja) * | 2017-12-27 | 2022-01-05 | 株式会社デンソー | 車両用前方照明装置、断線検出方法 |
US11330689B2 (en) * | 2019-10-30 | 2022-05-10 | Innolux Corporation | Display device |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2177080B1 (fr) * | 2007-07-23 | 2019-05-29 | Nxp B.V. | Disposition de del avec circuit de dérivation |
TWI495389B (zh) * | 2008-09-05 | 2015-08-01 | Eldolab Holding Bv | 以發光二極體為光源之照明系統 |
DE102009025752B4 (de) * | 2009-05-06 | 2011-06-16 | Lear Corp. | Verfahren und Schaltungsanordnung zur Ansteuerung einer Last |
JP5471330B2 (ja) * | 2009-07-14 | 2014-04-16 | 日亜化学工業株式会社 | 発光ダイオード駆動回路及び発光ダイオードの点灯制御方法 |
US9351365B2 (en) * | 2009-08-18 | 2016-05-24 | Eldolab Holding B.V. | Control unit for LED assembly and lighting system |
US8456095B2 (en) * | 2010-03-19 | 2013-06-04 | Active-Semi, Inc. | Reduced flicker AC LED lamp with separately shortable sections of an LED string |
JP5486388B2 (ja) | 2010-04-23 | 2014-05-07 | パナソニック株式会社 | 点灯装置およびそれを用いた前照灯装置並びに車両 |
US10057952B2 (en) * | 2010-12-15 | 2018-08-21 | Cree, Inc. | Lighting apparatus using a non-linear current sensor and methods of operation thereof |
US9398656B2 (en) * | 2012-05-16 | 2016-07-19 | Beijing EffiLED Opto-Electronics Technology Co., Ltd. | Device and method for driving an LED light |
-
2013
- 2013-07-29 EP EP13178386.2A patent/EP2833699A1/fr not_active Withdrawn
-
2014
- 2014-07-24 EP EP16189851.5A patent/EP3128809B1/fr active Active
- 2014-07-24 EP EP16189877.0A patent/EP3128813B1/fr active Active
- 2014-07-24 WO PCT/EP2014/065943 patent/WO2015014713A1/fr active Application Filing
- 2014-07-24 US US14/908,592 patent/US9686830B2/en active Active
- 2014-07-24 EP EP16189873.9A patent/EP3128812B1/fr active Active
- 2014-07-24 EP EP16189870.5A patent/EP3128810B1/fr active Active
- 2014-07-24 EP EP16189871.3A patent/EP3128811B1/fr active Active
- 2014-07-24 EP EP14742240.6A patent/EP3028544B1/fr active Active
Non-Patent Citations (1)
Title |
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See references of WO2015014713A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP3128810B1 (fr) | 2018-09-12 |
EP3128811A1 (fr) | 2017-02-08 |
EP3128809A1 (fr) | 2017-02-08 |
EP3128809B1 (fr) | 2018-07-18 |
EP3128810A1 (fr) | 2017-02-08 |
EP2833699A1 (fr) | 2015-02-04 |
EP3128813B1 (fr) | 2018-09-19 |
EP3128811B1 (fr) | 2018-09-12 |
EP3028544B1 (fr) | 2018-01-03 |
US9686830B2 (en) | 2017-06-20 |
US20160165678A1 (en) | 2016-06-09 |
WO2015014713A1 (fr) | 2015-02-05 |
EP3128812B1 (fr) | 2018-09-12 |
EP3128813A1 (fr) | 2017-02-08 |
EP3128812A1 (fr) | 2017-02-08 |
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