EP3672375B1 - Variateur de luminosité - Google Patents

Variateur de luminosité Download PDF

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Publication number
EP3672375B1
EP3672375B1 EP19209893.7A EP19209893A EP3672375B1 EP 3672375 B1 EP3672375 B1 EP 3672375B1 EP 19209893 A EP19209893 A EP 19209893A EP 3672375 B1 EP3672375 B1 EP 3672375B1
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EP
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Prior art keywords
dimmer
channel
channels
control device
parallel
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German (de)
English (en)
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EP3672375A1 (fr
Inventor
Johann Mensch
Jakob Reislhuber
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Siemens Schweiz AG
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Siemens Schweiz AG
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/14—Controlling the intensity 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]
    • H05B45/30—Driver circuits
    • H05B45/31—Phase-control circuits

Definitions

  • the invention relates to a dimmer, namely a device for controlling the electrical power consumption of an electrical load, in particular an integrated or connectable lighting device. Dimmers are generally known and serve to vary electrical power.
  • the invention further relates to a method for detecting the correct wiring of at least two parallel-connected, galvanically isolated dimmer channels of a dimmer.
  • Power variation in dimmers can be achieved preferably by phase-cut control or by trailing-edge control.
  • phase-cut control the current is switched on with a delay after the AC voltage crosses zero and flows until the next zero crossing. This is preferred for inductive load behavior.
  • trailing-edge control the current is switched on immediately after the zero crossing and switched off again before the next zero crossing. This is preferred for capacitive load behavior.
  • the dimmer has a main control unit.
  • the invention relates to so-called multi-channel dimmers. These have several individual dimmers, each controlling a portion of the electrical load. To increase performance, these so-called dimmer channels can be switched on the output side in parallel, sequentially, or mixed. Several physical channels are interconnected, creating a powerful logical channel. The dimmer channels can be located in one device or in multiple devices.
  • the outputs of the dimmer channels are largely synchronized. For example, if two channels are connected in parallel If the second channel switches too late (with leading edge phase control) or too early (with trailing edge phase control), the first channel will be more overloaded than if both switch incorrectly and synchronously. This can lead to excessive heating or failure of the first dimmer channel, or even to the dimmer shutting down.
  • each dimmer channel has its own channel control device, preferably a simple processor, as well as a measuring device for measuring the electricity in the channel, which can also be partially formed by this processor. Thanks to the measuring device, the channel control device receives the information necessary for detecting phase control or phase control, based on the periodic behavior of the electricity in the channel.
  • the control commands generated by the main control device are transmitted via a communication link to the channel control devices of the dimmer channels and implemented locally in accordance with the information about the periodic behavior of the electricity in the channel.
  • the complexity of the measuring devices leads to high development and production costs. Component tolerances or aging can also lead to inaccuracies in zero-crossing detection. The resulting timing differences then lead to non-synchronous switching of the dimmer channels and the problems described above. While replacing the device or recalibrating its components is possible, this is not without expense and may result in consequential damage due to operational disruption.
  • German patent specification DE102017213888B3 discloses a dimmer for controlling the power consumption of a connectable load, comprising at least two dimmer channels, wherein at least one dimmer channel is designed as a measuring dimmer channel for detecting the behavior of the electricity. Synchronization of the dimmer channels is carried out starting from the measuring dimmer channel. a channel communication connection from one dimmer channel to the next dimmer channel.
  • German patent specification DE102016209278B3 discloses a dimmer system for controlling the power consumption of a connectable load and a method for controlling the power consumption of a connectable load in a dimmer system, comprising a master control device and at least two slave dimmers, wherein the master control device outputs synchronization signals for synchronizing the respective outputs of the slave dimmers to the respective slave dimmers via a suitable communication connection, and wherein the slave dimmers are connected in parallel to provide a common controlled output for the connectable load.
  • each channel can only control a specific load (e.g., 300W). If you want to control a higher load (e.g., 1000W), this is not possible with a single channel. For this reason, multiple channels are connected in parallel and thus jointly control a larger load. These parallel channels must therefore be controlled in parallel by the internal software and wired in parallel. Failure to perform one of these two actions may result in damage. on the universal dimmer and the load.
  • the present invention ensures that the parallel dimmer channels are controlled in parallel and, on the other hand, are correctly wired in parallel. Furthermore, errors caused by incorrect wiring of the channels are immediately detected, preventing subsequent damage.
  • Each dimmer channel can have information about the zero crossing times of the sinusoidal alternating voltage of the conductor connected to it, as well as the zero crossings of the adjacent parallel channel.
  • error different conductors connected
  • no error same conductor connected
  • the invention reduces the probability of faulty wiring or incorrect parameterization in parallel operation.
  • the error is automatically detected and reported by the dimmer (e.g., by a visual or acoustic signal, or by a corresponding error message on a dimmer display, or by a corresponding message to a central location (e.g., control center). Damage to the dimmer and the load due to incorrect wiring/parameterization in parallel operation is thus made more difficult.
  • the dimmer can comprise at least two dimmer channels, each with a channel control device. At least one of the dimmer channels is a measuring dimmer channel because it comprises a measuring device for measuring the electricity in the channel. Its information about the behavior of the electricity in the measuring dimmer channel is transmitted to the channel control device of the measuring dimmer channel.
  • the dimmer further comprises a main control device that can generate at least control commands for the dimmer channels, as well as a main communication connection that is at least suitable for transmitting such control commands. from the main control device to the channel control device of a dimmer channel.
  • the dimmer comprises at least one channel communication connection from a first dimmer channel to a second dimmer channel, preferably with an element for galvanically isolating the first dimmer channel from the second dimmer channel, preferably with an optocoupler or alternatively with a transformer circuit.
  • This channel communication connection transmits information, specifically at least about the behavior, preferably the periodic behavior, of the electricity in the measuring dimmer channel, from the measuring device or from the channel control device of a first dimmer channel to the channel control device of the second dimmer channel.
  • the channel communication connection is also suitable for transmitting information in the opposite direction.
  • each channel control device of the dimmer channels and a main control device of the dimmer may be required anyway, preferably including galvanic isolation, channel communication connections between the channel control devices can be established with little additional effort, which can even replace part of the communication connections between the channel control devices and the main control device of the dimmer.
  • the information about the periodic behavior of the electricity in a measuring dimmer channel is an indication of the time of transmission of the information by the channel control device of the first dimmer channel, or preferably an indication of the time of at least one zero crossing of the voltage in the measuring dimmer channel.
  • the channel control device of the second dimmer channel can generate information about the periodic behavior of the electricity on-site based on the information about the periodic behavior of the electricity in the measuring dimmer channel, which it can use to control the electricity in the channel precisely and synchronously with the other dimmer channels. can switch.
  • This stored data preferably contains a time value which is an estimate of the time for processing and transmitting the information from the measuring dimmer channel to the control device of the second dimmer channel.
  • the time value is a constant for each dimmer channel and may contain values for the time required for generating the information by the measuring device, transmitting it via the channel communication link or via the channel communication links from the measuring dimmer channel to the second dimmer channel, and processing it in the dimmer channels. It can be determined for each dimmer channel, namely from a calibration with measurements on the dimmer or on other dimmers from the same series, or in a simulation using a computer.
  • the data is preferably permanently stored in the channel control devices.
  • the information about the periodic behavior of the electricity in the measurement dimmer channel reaches the channel control device of the second dimmer channel with little delay, but especially when repeated and despite component aging, with almost the same delay. It is noteworthy that this also applies to the overall transmission delay when the signal is transmitted from the original channel control device of the measurement dimmer channel via several channel control devices and across the channel communication links in between. Accordingly, the first dimmer channel to a channel communication link can be different from the measurement dimmer channel.
  • the channel communication connection can also transmit at least control commands from the main control device of the first dimmer channel to the channel control device of the second dimmer channel.
  • the instructions for switching behavior are also distributed to several dimmer channels via the same path, eliminating the need for direct communication connections to the main control device of the dimmer. This also can be unidirectional for cost reasons, although bidirectional communication has advantages.
  • the measuring dimmer channel has a direct channel communication connection with multiple control devices of other dimmer channels.
  • This may be implemented as multiple individual channel communication connections, or as a single channel communication connection for bus communication or the like, according to which telegrams are received at the destination based on an individual address or a group address.
  • the main control device is a channel control device.
  • the dimmer is equipped with a suitable evaluation unit (e.g., a microcontroller with appropriate software or firmware) to evaluate the information about the electrical behavior in the dimmer channels.
  • the evaluation unit is preferably located or integrated in the measuring dimmer channel and/or in the main control unit.
  • the measuring dimmer channel is configured to detect whether the respective times of the respective zero crossings of the sinusoidal alternating voltages applied to the respective dimmer channels are substantially synchronous. If the sinusoidal alternating voltages are substantially synchronous, synchronous switching of the dimmer channels is ensured and correct parallel wiring of the dimmer channels is detected. To detect this, one of the dimmer channels can be configured as The measuring dimmer channel must be equipped with the appropriate measuring and evaluation equipment. The measuring dimmer channel is connected to the other parallel dimmer channels via a channel communication link.
  • each dimmer channel is configured to detect whether the respective times of the respective zero crossings of the sinusoidal AC voltages applied to the respective dimmer channels are substantially synchronous. If the sinusoidal AC voltages are substantially synchronous, synchronous switching of the dimmer channels is ensured, and correct parallel wiring of the dimmer channels is detected. To detect this, each of the parallel dimmer channels can be equipped as a measuring dimmer channel with the appropriate measuring and evaluation devices.
  • each dimmer channel is designed as a measuring dimmer channel with a respective measuring device and a respective communication connection to the main control device, wherein the main control device is configured to detect whether the respective times of the respective zero crossings of the sinusoidal alternating voltage applied to the respective dimmer channel are substantially synchronous. Based on the information provided by the dimmer channels about the respective periodic behavior of the electricity on site, the main control device detects whether synchronous switching of the dimmer channels and correct parallel wiring of the dimmer channels are present.
  • the main control device is equipped with corresponding evaluation means (e.g., means for comparing the supplied information). For example, a microprocessor with corresponding software or firmware.
  • a further advantageous embodiment of the invention is that when detecting whether the respective times of the respective zero crossings of the sinusoidal alternating voltages applied to the respective dimmer channels are not synchronous are, the dimmer has a corresponding indicator (red LED, buzzing sound, message on a display, etc.). This immediately notifies a user (e.g., an installer) of any error or malfunction when connecting the dimmer.
  • a user e.g., an installer
  • a further embodiment relates to a dimmer for controlling the power consumption of a connectable load, in particular an LED light, with at least two parallel-connected, galvanically isolated dimmer channels, each with a channel control device, wherein each of the dimmer channels is designed as a measuring dimmer channel, each with a measuring device which is at least suitable for zero-crossing detection of the current and/or the voltage applied to the respective dimmer channel; a main control device which is configured to receive information about the zero crossings of the sinusoidal alternating currents and/or alternating voltages applied to the respective dimmer channels from the respective channel control devices via suitable communication links, and which is further configured to compare the information about the zero crossings of the respective dimmer channels with one another, and which is further configured to generate control commands for the dimmer channels, wherein the control commands can be transmitted from the main control device to the channel control devices of the dimmer channels via the suitable communication links, wherein the main control device is configured to detect whether the zero crossings of the dimmer channels assigned for parallel operation
  • a further advantageous embodiment of the invention is that the main control device in the dimmer is designed as a separate component (e.g., microcontroller).
  • the channel control units or the Channel control devices can be designed to be very cost-effective (lean). This design enables simple command communication and a simple power supply for the main control device and the channel control devices.
  • a further advantageous embodiment of the invention is that the main control device is integrated into a correspondingly configured channel control device of a dimmer channel.
  • This embodiment eliminates the need for a microcontroller. Furthermore, this embodiment enables direct and thus fast communication between the dimmer channels.
  • a further advantageous embodiment of the invention is that a channel control device of a dimmer channel is configured as the main control device, the master.
  • the channel control devices of the dimmer channels are essentially identical. It is negotiated which of the channel control devices is the master (e.g., depending on the production number or ID number). The master is advantageously determined automatically during commissioning or when loading the firmware.
  • a further advantageous embodiment of the invention is that the detection of whether the respective zero crossings of the sinusoidal alternating currents and/or alternating voltages applied to the respective dimmer channels are essentially synchronous is carried out by comparing the respective times of the zero crossings or by comparing the respective phase angles. This is advantageously carried out by measuring the time difference between the zero crossings.
  • a 50 Hz system for example, there is a time difference of approximately 6.67 ms between two phases of a three-phase system, which corresponds to a phase angle of 120 degrees.
  • a 60 Hz system for example, there is a time difference of approximately 5.55 ms.
  • a further advantageous embodiment of the invention is that when it is recognized that the respective times of the If the respective zero crossings of the sinusoidal alternating currents and/or alternating voltages applied to the respective dimmer channels are not synchronized, a corresponding indicator (red LED, buzzing noise, display message, etc.) can be activated on the dimmer.
  • a reliable message can be output, for example, if the measured time difference or a measured phase angle differs by +/- 5% from the above-mentioned values.
  • the problem is further solved by a method according to claim 3.
  • the method can be carried out, for example, during commissioning of the dimmer.
  • the method is carried out automatically (or mandatorily) during commissioning of the dimmer as a quality assurance measure.
  • Figure 1 shows the functional distribution of a first exemplary multi-channel dimmer D on the supply network N, L1.
  • the multi-channel dimmer D has several galvanically isolated dimmer channels K1, K2, Kx, each with a channel control device S1, S2, Sx.
  • the dimmer channels K1, K2, Kx are connected in parallel to the output side of the load L via terminals A1, A2, Ax, so that each can supply a portion of the current to it.
  • the dimmer D starts due to an external command B.
  • a main control device H generates control commands which are sent via a communication connection V to the channel control device S1 of the dimmer channel K1.
  • the dimmer channel K1 contains a measuring device M1 that is suitable for generating information about the electrical behavior at a point in the channel, particularly information about the zero crossing of the voltage.
  • the dimmer channel K1 is therefore also called a measuring dimmer channel.
  • a communication link transmits such information from the measuring device M1 to the channel control device S1.
  • a channel communication connection V12, V23, V(x-1)x leads from one dimmer channel to the next dimmer channel.
  • These channel communication connections V12, V23, V(x-1)x are preferably suitable for transmitting information about the electrical behavior in the measuring dimmer channel K1 to the channel control device S2, Sx of the next dimmer channel K2, Kx, specifically from the channel control device S1, S2 of one dimmer channel K1, K2 to the channel control device S2, Sx of the other dimmer channel K2, Kx.
  • these channel communication connections V12, V23, V(x-1)x can also transmit the control commands from the main control device H.
  • the communication connections V, V12, V23, V(x-1)x between the galvanically isolated main control device H and the dimmer channels K1, K2, Kx each contain an optocoupler on both sides.
  • FIG. 2 shows a second example of a multi-channel dimmer.
  • the channel communication links V12, V23, V(x-1)x between the dimmer channels K1, K2, Kx link the measuring device M with the respective channel control devices S1, S2, Sx for very real-time transmission.
  • the channel communication links V12, V23, V(x-1)x are unidirectional, which is why separate communication links V deliver the control commands from the main control device H to each dimmer channel K1, K2, Kx and return any feedback.
  • Figure 3 shows measuring dimmer channel K1, dimmer channel K2 and their channel communication connection V12 of the second exemplary multi-channel dimmer according to Figure 2 , where the circuits of the measuring device M1, the channel communication connection V12 and the dimmer channel K2 are shown in simplified form.
  • An operational amplifier N11 of the measuring device M1 converts the mains voltage of 230 volts into a signal that is easier to process.
  • a comparator N12 of the measuring device M1 analyzes this signal for zero crossings. The zero crossings are passed on directly to the channel control device S1 but also to an optocoupler in the channel communication connection V12.
  • the optocoupler For the purpose of galvanic isolation, the optocoupler contains an LED and a light-sensitive resistor, which switches a current via the resistor R in the dimmer channel K2. The optocoupler thus transmits the information about the zero crossings with little delay to the channel control device S2 and to the next channel communication connection.
  • the measuring device M1 can also act as an evaluation unit, ie, it can perform or provide evaluation functions such as comparing phase angles and/or comparing the times of zero crossings. This means that the functionalities of the measuring device M1 and the evaluation unit AE1 can be integrated in one component or part. However, evaluation functionalities can also be implemented in a separate evaluation unit AE1.
  • control commands of the main control device H are transmitted in a similar way to the variant of Figure 1 via a single communication link V to the channel control device S1 of the dimmer channel K1.
  • the channel control device S1 forwards them to the next dimmer channel K2 via the channel communication links V12, as in the variant of the Figure 2 .
  • the channel communication connections V12, V23, V(x-1)x outlined above are supplemented, for example, with a switch and a resistor in series with ground upstream of the LED.
  • the switch for example a transistor, is switched between conducting and blocking by an output of the respective channel control device Sx.
  • the switch When the respective comparator Nx2 energizes the LED, the switch can thus impose small voltage steps on the signal, which lead to small intensity steps in the light from the LED.
  • the corresponding resistance steps in the light-sensitive resistor on the receiver side can be detected by a simple voltmeter. However, they do not trigger zero-crossing detection there. These steps thus encode the control commands of the main control device H and are passed on by the voltmeter to the respective channel control device Sx+1.
  • the exemplary dimmers D are to be Figure 1 or according to Figure 2 equipped with a suitable evaluation unit AE1, AE2 (e.g. microcontroller with corresponding software or firmware) for evaluating the information about the behavior of the electricity in the dimmer channels K1, K2, Kx.
  • the evaluation is carried out, for example, by comparing the respective times of the respective zero crossings of the sinusoidal signals applied to the respective dimmer channels K1, K2, Kx. Alternating voltages or by analyzing the respective phase shift angles or phase differences.
  • the evaluation unit AE1, AE2 is advantageously arranged or integrated in the measuring dimmer channel M1 and/or in the main control device H.
  • each dimmer channel K1, K2, Kx is designed as a measuring dimmer channel M1 with a respective measuring device M1 and a respective communication connection V to the main control device H, wherein the main control device H is configured to detect whether the respective times of the respective zero crossings of the sinusoidal alternating voltage applied to the respective dimmer channel K1, K2, Kx are essentially synchronous. Based on the information provided by the parallel dimmer channels K1, K2, Kx about the respective periodic behavior of the electricity on site, the main control device H detects whether synchronous switching of the dimmer channels K1, K2, Kx and correct parallel wiring of the dimmer channels K1, K2, Kx are present.
  • the main control device H is equipped with corresponding evaluation means AE2 (e.g. means for comparing the information provided).
  • evaluation means AE2 e.g. means for comparing the information provided.
  • a microprocessor with corresponding software or firmware.
  • each dimmer channel K1, K2, Kx can have an evaluation unit AE1.
  • a further advantageous embodiment of the invention is that, upon detection of whether the respective times of the respective zero crossings of the sinusoidal alternating voltages applied to the respective dimmer channels K1, K2, Kx are not synchronous, a corresponding indicator I (red LED, buzzing noise, display message, etc.) is generated on the dimmer D. This immediately notifies a user (e.g., an installer) of any error or malfunction when connecting the dimmer D.
  • a corresponding indicator I red LED, buzzing noise, display message, etc.
  • FIG. 4 shows an arrangement for a third exemplary multi-channel dimmer D.
  • This is a universal dimmer.
  • each channel can only control a specific load LA1 - LAn (e.g. 300W). If you want to control a higher load (e.g. 1000W), this is not possible with a single channel. For this reason, multiple channels DK1 - DKn are connected in parallel and thus jointly control a larger load. These parallel channels DK1 - DKn must therefore be controlled in parallel by the internal software and wired in parallel. Failure to carry out one of these two actions may result in damage to the universal dimmer and the load.
  • LA1 - LAn e.g. 300W
  • the universal dimmer D comprises a main control device H (preferably a suitably configured microcontroller) which is at least suitable for generating control commands for the dimmer channels DK1 - DKn. Control commands can be transmitted from the main control device H to the corresponding channel control devices of the respective dimmer channels DK1 - DKn via the communication link V.
  • the parallel-connected, galvanically isolated (GT) dimmer channels DK1 - DKn are advantageously each equipped with a channel control device (simple processor or correspondingly configured microprocessor). Information is transmitted between two adjacent dimmer channels via channel communication links KV. At least one dimmer channel DK1 comprises a corresponding measuring device M1 and a corresponding evaluation unit AE1.
  • the evaluation unit AE1 is configured to detect whether the respective times of the respective zero crossings of the sinusoidal alternating voltage applied to the respective dimmer channel DK1 - DKn are essentially synchronous.
  • further or even all dimmer channels DK1 - DKn can be equipped with a measuring device M1 and an evaluation unit AE1.
  • the main control device H can also have a correspondingly configured evaluation unit AE2 for detecting whether the respective times of the respective zero crossings of the sinusoidal alternating voltage applied to the respective dimmer channel DK1 - DKn are essentially are synchronous.
  • the dimmer channels DK1 - DKn are connected on the output side to supply power via terminals AK1 - AKn to the corresponding load LA1 - LAn.
  • GT galvanically isolated
  • Figure 5 shows an arrangement for a fourth exemplary multi-channel dimmer D in which all channels DK1 - DKn are connected to the same phase L1. It is thus possible on the software side (through appropriate phase or zero-crossing synchronization, e.g., through appropriate synchronization signals from control unit H to channels DK1 - DKn) to bundle two or more channels DK1 - DKn to jointly control a load L that is greater than the maximum load of a single channel DK1 - DKn.
  • both the dimmer and the load may be damaged.
  • Figure 6 shows an arrangement for a fifth exemplary multi-channel dimmer D, where different phases L1, L2, L3 are connected to bundled channels DK1 - DKn.
  • the dimmer D and the load L e.g. a lamp
  • the present invention detects and reports such faulty wiring.
  • FIG. 7 shows an arrangement for a sixth exemplary multi-channel dimmer.
  • the exemplary multi-channel dimmer D according to Figure 7 It is also a universal dimmer.
  • each channel can only control a specific load (e.g. 300W). If you want to control a higher load L (e.g. 1000W), this is not possible with a single channel.
  • L e.g. 1000W
  • multiple channels DKa - DKx are connected in parallel and thus jointly control a larger load L (e.g. a light).
  • These parallel channels DKa - DKx must therefore be controlled in parallel by the internal software and wired in parallel. Failure to carry out one of these two actions can result in damage to the universal dimmer D and the load L.
  • the main control device H in the dimmer D is designed as a separate component (e.g., a microcontroller).
  • the channel control units SE1 - SEx or the channel control devices can be designed very cost-effectively (lean). This design enables simple command communication and a simple power supply for the main control device H and the channel control devices SE1 - SEx.
  • the detection of whether the respective zero crossings ND of the sinusoidal alternating currents and/or alternating voltages applied to the respective dimmer channels DKa - DKx are essentially synchronous is carried out by comparing the respective times of the zero crossings ND or by comparing the respective phase angles in the main control device H. This is advantageously carried out by measuring the time difference of the zero crossings. In a 50 Hz system, for example, there is a time difference of approximately 6.67 ms between two phases of a three-phase system, which corresponds to a phase angle of 120 degrees. In a 60 Hz system, for example, there is a time difference of approximately 5.55 ms.
  • a corresponding indicator I red LED, buzzing noise, output of a message on a display, etc.
  • a reliable message can be output by indicator I, for example, if the measured time difference or a measured phase angle differs by +/- 10%, in particular by +/- 5%, from the above-mentioned values.
  • FIG 8 shows an arrangement for a seventh exemplary multi-channel dimmer D.
  • the exemplary multi-channel dimmer D according to Figure 8 It is also a universal dimmer.
  • each channel can only control a specific load (e.g. 300W). If you want to control a higher load L (e.g. 1000W), this is not possible with a single channel.
  • L e.g. 1000W
  • multiple channels DKa - DKx are connected in parallel and thus jointly control a larger load L (e.g. a light).
  • These parallel channels DKa - DKx must therefore be controlled in parallel by the internal software and wired in parallel. Failure to carry out one of these two actions can result in damage to the universal dimmer D and the load L.
  • the exemplary dimmer D for controlling the power consumption of a connectable load L, in particular an LED lamp, according to Figure 8 includes: at least two parallel-connected, galvanically GT isolated dimmer channels DKa - DKx, each with a channel control device SE1 - SEx, wherein each of the dimmer channels DKa - DKx is designed as a measuring dimmer channel, each with a measuring device M1, which is at least suitable for zero crossing detection NDE of the current and/or the voltage applied to the respective dimmer channel DKa - DKx; a main control device H, which is designed to receive information about the zero crossings ND of the currents applied to the respective to receive the sinusoidal alternating currents and/or alternating voltages applied to the dimmer channels DKa - DKx from the respective channel control devices SE1 - SEx via suitable communication links KV, and which is further configured to compare the information about the zero crossings (ND) of the respective dimmer channels DKa - DKx with
  • the functionality of the main control device can be integrated into a correspondingly configured channel control device SE1 - SEx of a dimmer channel DKa - DKx.
  • This configuration eliminates the need for a microcontroller. Furthermore, this configuration enables direct and therefore fast communication between the channel control devices SE1 - SEx of the dimmer channels DKa - DKx.
  • a channel control device SE1 - SEx of one of the dimmer channels DKa - DKx can be configured as the main control device, i.e., as the master.
  • the channel control devices SE1 - SEx of the dimmer channels DKa - DKx are essentially identical. It is negotiated which of the channel control devices SE1 - SEx is the master (master dimmer channel) (e.g., depending on the production number or ID number). The master is advantageously determined automatically during commissioning or when loading the firmware.
  • the detection takes place as to whether the respective zero crossings ND of the sinusoidal alternating currents and/or alternating voltages applied to the respective dimmer channels DKa - DKx are essentially synchronous, by comparing the respective times of the zero crossings ND or by comparing the respective phase angles. If it is detected that the respective times of the respective zero crossings ND of the sinusoidal alternating currents and/or alternating voltages applied to the respective dimmer channels DKa - DKx are not synchronous, a corresponding indicator I can be activated on the dimmer D. In principle, a corresponding message can also be output to a central location within a building automation system.
  • Each dimmer channel has information about the zero crossing times of the sinusoidal AC voltage of the conductor connected to it, as well as the zero crossing times of the adjacent parallel channel.
  • the invention reduces the likelihood of faulty wiring or incorrect parameterization in parallel operation of a dimmer.
  • the error is automatically detected and reported by the dimmer. Damage to the dimmer and the load due to faulty wiring/parameterization in parallel operation is thus made more difficult or even prevented.

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Claims (3)

  1. Variateur (D) pour commander la puissance absorbée d'une charge (L) pouvant être raccordée, plus particulièrement d'une lampe LED, comprenant
    deux canaux (K1, K2) du variateur commutés en parallèle, séparés galvaniquement, à savoir un premier canal (K1) du variateur et un deuxième canal (K2) contigu du variateur avec chacun un dispositif de commande (S1, S2) du canal, dans lequel chacun des canaux (K1, K2) du variateur est commuté en parallèle du côté de la sortie à la charge (L) par des bornes de raccordement (A1, A2) respectives,
    chacun des deux canaux (K1, K2) du variateur est conçu comme un canal (K1) du variateur de mesure, et chacun comprend un dispositif de mesure (M1), qui est au moins approprié, pour produire des informations sur le comportement de l'électricité à un endroit dans le canal (K1, K2) du variateur respectif, dans lequel les informations comprennent une indication sur le temps d'au moins un passage par zéro d'une tension alternative dans le canal (K1, K2) du variateur respectif,
    un dispositif de commande principal (H), qui est au moins approprié, pour produire des instructions de commande pour les deux canaux (K1, K2) du variateur commutés en parallèle, séparés galvaniquement, et
    dans lequel chacun des deux canaux du variateur est relié à un dispositif de communication (V) respectif avec le dispositif de commande principal (H), qui est au moins approprié à chaque fois pour transmettre de telles instructions de commande du dispositif de commande principal (H) au dispositif (S1) de commande du canal respectif du canal (K1) du variateur de mesure,
    dans lequel le dispositif de commande principal (H) est agencé pour recevoir les informations sur les dispositifs de communication (V),
    dans lequel le dispositif de commande principal (H) est agencé pour reconnaître si les moments respectifs des passages par zéro respectifs de la tension alternative sinusoïdale appliquée au canal (K1, K2) du variateur respectif sont essentiellement synchrones,
    caractérisé en ce que
    le dispositif de commande principal (H) est conçu pour constater par mesure d'un décalage de phase des deux tensions alternatives si un décalage de phase considérable existe ou pas, dans lequel un décalage de phase reconnu représente un câblage défectueux.
  2. Variateur selon la revendication 1, dans lequel lorsqu'il est reconnu que les moments respectifs des passages par zéro respectifs des tensions alternatives sinusoïdales appliquées aux canaux (K1, K2) du variateur respectifs ne sont pas synchrones, un indicateur (I) correspondant peut être activé sur le variateur.
  3. Procédé de reconnaissance du câblage correct de deux canaux (K1, K2) du variateur commutés en série, séparés galvaniquement, d'un variateur, plus particulièrement d'un variateur universel,
    dans lequel pour chaque canal (K1, K2) du variateur des informations sur les moments des passages par zéro de la tension alternative sinusoïdale du conducteur lui étant raccordé sont mises à disposition tout comme des informations sur les passages par zéro du canal contigu commuté en parallèle ;
    dans lequel les informations sur les moments des passages par zéro de la tension alternative sinusoïdale du conducteur lui étant raccordé sont mises à disposition tout comme des informations sur les passages par zéro du canal contigu commuté en parallèle par une liaison (V12) de communication directe entre les canaux (K1, K2) du variateur;
    dans lequel une évaluation des informations sur le comportement de l'électricité dans les canaux (K1, K2) du variateur est réalisée par une unité d'évaluation (AE1, AE2) appropriée des canaux (K1, K2) du variateur pour reconnaître si les moments respectifs des passages par zéro respectifs de la tension alternative sinusoïdale appliquée au canal (K1, K2) du variateur respectif sont essentiellement synchrones ;
    caractérisé en ce
    qu'au moyen de l'évaluation est constaté un décalage de phase des deux tensions alternatives, et si un décalage de phase considérable existe ou pas, dans lequel un décalage de phase reconnu représente un câblage défectueux.
EP19209893.7A 2018-12-17 2019-11-19 Variateur de luminosité Active EP3672375B1 (fr)

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US20200196408A1 (en) 2020-06-18
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DE102018009924B4 (de) 2020-10-01
US10743381B2 (en) 2020-08-11

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