Tridonic Patente

The present invention provides a fixed output driver. The fixed output driver comprises: a power supply circuit configured to output a constant output characteristic based on a predefined value; an NFC communication module configured to receive one or more control parameters from an external NFC-enabled device; and a control circuit configured to adjust the output characteristic of the driver within a predefined range relative to the predefined value based on the received control parameters, without modifying the predefined value.

Luminaire comprising lighting means configured to provide a light emission of the luminaire by emitting light, a driver, and a control unit configured to control the light emission of the luminaire by controlling an electrical supply of the lighting means from the driver. The control unit is configured to obtain a remaining lifetime of one or more electrical components of the luminaire, and control an indication of the remaining lifetime of an electrical component of the one or more electrical components via the light emission of the luminaire to outside the luminaire by determining one or more parameters, optionally a light intensity, a flashing, and/or a frequency of the flashing, of the light emission of the luminaire dependent on the remaining lifetime of the electrical component, generating one or more control signals according to the one or more parameters, and providing the one or more control signals to the driver.

The present invention provides a control system (10) for controlling light emission of a luminaire (20) towards a surface (30). The control system (10) comprises a sensor (1) configured to detect light and having a sensitivity in the melanopic region, and a control unit (2). The sensor (1) is configured to be arranged such that the sensor (1) detects light (50) reflected from the surface (30) being illuminated by the luminaire when the luminaire emits light (40). The control unit (2) is configured to determine a melanopic equivalent daylight illuminance, MEDI, of the light emission (40) of the luminaire (20) using a detection result of the sensor (1). The control unit (2) is configured to control the light emission (40) of the luminaire (20) according to the determined MEDI.

The present invention provides a building management system (1) configured to receive wireless signals (5), optionally radio signals, transmitted by an electrical device (3) usable by a person (4), the wireless signals (5) comprising an identifier (ID) identifying the electrical device (3); recognize the electrical device (3) on the basis of the identifier (ID) in the received wireless signals (5); determine a distance (d) between a location of a building infrastructure device (2) of the building management system (i) and a location of the recognized electrical device (3) using the received wireless signals (5); determine on the basis of the determined distance (d) whether a condition for controlling the building infrastructure device (2) according to statistical control data associated with the recognized electrical device (3) is fulfilled; and control the building infrastructure device (2) according to the statistical control data in case that the condition is fulfilled.

The present invention provides a surge protection circuit for a Flyback converter, the Flyback converter having a control integrated circuit, IC, with a current-sense pin, and a switching transistor. The surge protection circuit comprises: a surge event detection component configured to detect a surge event based on a mains input voltage to the Flyback converter, and generate an output signal upon detecting the surge event; and a signal path from the surge event detection component to the current-sense pin of the control IC, wherein the output signal is adapted to emulate an overcurrent condition at the current-sense pin, thereby triggering the control IC to halt switching of the switching transistor during the surge event.

The present invention provides a flyback power converter, the flyback power converter comprises: a transformer having a primary winding connected to an input supply and a secondary winding for supplying power to a load, a first switch arranged in series with the primary winding and configured to conduct current through the primary winding during an on-time and interrupt current flow during an off-time, an output circuit coupled to the secondary winding for powering the load; and an auxiliary circuit configured to be active during an off-time of the first switch. In a first phase of the off-time of the first switch, the auxiliary circuit is configured to absorb energy from the transformer; and in a second phase of the off-time of the first switch, the auxiliary circuit is configured to deliver at least part of the absorbed energy to the output circuit.

The present invention provides a driver (10) configured to drive radiation means (20), wherein the radiation means (20) are configured to radiate at least one of visible light, ultraviolet radiation and infrared radiation. Optionally, the radiation means are one or more light emitting diodes (LEDs). The driver (10) comprises a control unit (1) configured to control an electrical supply by the driver (10) to the radiation means (20) when the radiation means (20) are electrically connected with the driver (10). The driver (10) comprises a sensor unit (2) configured to detect at least one of visible light, ultraviolet radiation and infrared radiation. The control unit (1) is configured to wirelessly receive via the sensor unit (2) DALI signals. The control unit (1) is configured to wirelessly transmit DALI signals by controlling the electrical supply of the radiation means (20) by the driver (10) accordingly.

The present invention provides a lighting system (100). The lighting system (100) comprises an electrical component (1) with an internal temperature sensor (2) for obtaining an internal temperature of the electrical component (1) resulting from an operation of the electrical component (1) in an on-state of the electrical component (1), The lighting system (100) comprises a data processing unit (3). The data processing unit (3) is configured to determine, using a temperature measured by the temperature sensor (2) of the electrical component (1), an ambient temperature of an area in which the lighting system (100) is installed. The present invention further provides a method for determining an ambient temperature of an electrical component of a lighting system.

A building infrastructure management system (10) is provided. Said building infrastructure management system (10) comprises multiple building infrastructure devices (11a, 11b, 11c), and a data processing device (12) configured to acquire information and/or measurement data with respect to the building infrastructure management system (10) and/or with respect to at least a part or each of the multiple building infrastructure devices (11a, 11b, 11c). The data processing device (12) is further configured to detect an anomaly with respect to the correspondingly acquired information and/or measurement data and/or with respect to the building infrastructure management system (10) and/or with respect to at least a part or each of the multiple building infrastructure devices (11a, 11b, 11c) based on a machine-learned or pre-programmed model.

The present invention provides a user device (1) for commissioning a sensor device (2) in an area. The user device (1) is configured to generate (11) a three-dimensional model of the area using three-dimensional spatial data of the area, display (12) the generated three-dimensional model of the area to a user (3), receive (13) from the user (3) information on a desired installation location and orientation of the sensor device in the area and on one or more desired spatial conditions in the area to be considered by the sensor device for evaluating detection results of the area by the sensor device (1), generate (14) a second three-dimensional model of the area using the three-dimensional model of the area and the received information, the second three-dimensional model of the area comprising the received information, and provide (15) the generated second three-dimensional model of the area to the sensor device (2).

A system (10) for commissioning a building infrastructure system (20) is provided. Said system (10) comprises an input interface (11) for inputting information and/or commissioning-associated data with respect to the building infrastructure system (20), and a processing device (12) configured to provide commissioning parameters for the building infrastructure system (20). The processing device (12) is further configured to apply an artificial intelligence or pre-programmed model to the correspondingly inputted information and/or commissioning-associated data to generate said commissioning parameters.

The invention is related to a device (1, 2) included in a network, for operating at least one building infrastructure device (3, 4) included in the network and establishing a communication in the network, comprising a first application controller (11, 21) configured to be in an operating mode and to have installed an operating software stack based on which at least one building infrastructure device is operated and communication in the network is established, and a second application controller (12, 22) configured to be in an idle mode, and the device (1, 2) is further configured to install on the first or second application controller (11, 12, 21, 22) a software stack to be installed different from the installed software stack. The invention is also related to a system thereof.

The present invention provides an NFC antenna assembly (10) for a street lighting system. The NFC antenna assembly (10) comprises an NFC antenna, and a terminal soldered onto and extending from a surface plane of the NFC antenna assembly, the terminal being configured to connect two conductors (13a, 13b), enabling a wired connection between the NFC antenna assembly and an external device (22). This invention further provides a lighting system (1) comprising a luminaire including a luminaire housing (21), a lighting driver (22) located within the luminaire housing, and an NFC antenna (20) arranged on the lighting driver (22). The system comprises an NFC antenna assembly (10) positioned outside the luminaire housing (21), and two conductors (13a, 13b) connecting the NFC antenna (20) and the NFC antenna assembly (10), enabling NFC communication between the lighting driver (22) and the NFC antenna assembly (10).

The present invention provides a control module for a street lighting system. The control module is designed to provide power and communication capabilities to at least one module during periods when the street lighting system is unpowered. The module comprises a battery, a charging circuitry configured to charge the battery during periods when the street lighting means is powered, and manage operations of the control module. The control module is configured to provide power to the at least one module during periods when the street lighting means is unpowered; collect data from the module; and transmit the collected data to the external system or store the collected data for later transmission.

The present invention provides a power converter for LED drivers. The power converter comprises a primary-side switching circuit configured to receive a DC input voltage, a transformer having a primary winding and a secondary winding, wherein the primary winding is connected to the primary-side switching circuit, and the secondary winding is connected to a secondary-side rectification circuit, the secondary-side rectification circuit configured to supply an output voltage to the LED load, and a resonant capacitor connected in series with the primary winding. In particular, the resonant capacitor has a voltage-dependent capacitance that decreases with increasing voltage across it.

A dimmable constant voltage driver (10, 20) for being connected in parallel with at least one further dimmable constant voltage driver (10, 20) to jointly or redundantly supply an LED-based load (30) is provided. Said driver (10, 20) comprises a modulation unit (11, 21) for modulating a corresponding DC output voltage of the dimmable constant voltage driver (10, 20), especially to dim the LED-based load (30), based on a modulation control signal, and a control unit (12, 22) for issuing said modulation control signal for the modulation unit (11, 21). In this context, the control unit (12, 22) is configured to provide said modulation control signal for the at least one further dimmable constant voltage driver (10, 20) and/or to receive said modulation control signal from the at least one further dimmable constant voltage driver (10, 20).

The invention is related to energy management system for supply of electrical energy to a lighting system (4), comprising a terminal (14) for electrically connecting a mains network (2), a terminal (15) for electrically connecting at least one electric vehicle (3) and a terminal (16) for electrically connecting the lighting system (4). Moreover, the energy management system (1) comprises a control module (11) that is configured to control an electrical energy distribution between the terminals, based on first information that indicates available electrical energy of the at least one electric vehicle (3) and second information that indicates demanded electrical energy of the lighting system (4). Furthermore, the invention relates to a corresponding method controlling energy distribution.

The present invention provides a LED system (10). Said LED system (10) comprises: a LED driver (11) providing a LED supply voltage (12) at its output terminals (13, 14), a LED load (15) supplied off the output terminals (13, 14) of the LED driver (11), and a humidity sensor (16) having two terminals and being connected in parallel to the LED load (15). The LED driver (11) comprises a controller designed for reading out a humidity information voltage signal via a voltage present at its output terminals (13, 14).

The present invention provides an LED driver for supplying power to an LED load. Said LED driver comprises a droop characteristic defined by a droop characteristic curve, which represents the relationship between an output voltage and an output current of the LED driver, wherein the output voltage decreases as the output current increases. Said LED driver further comprises a control unit configured to autonomously modify the droop characteristic curve without external input.

The present invention provides a DC/DC converter for supplying power to an associated LED load. The DC/DC converter is supplied by a central DC bus voltage from one or more AC/DC converters. Said DC/DC converter is configured to: receive a control signal indicating a trigger event associated with a failure or reduced performance of the one or more AC/DC converters; and in response to the control signal, reduce its power consumption. The present invention further provides a lighting system comprising one or more AC/DC converters arranged to supply a central DC bus voltage, and at least one DC/DC converter.

The present invention provides a power converter for LED drivers. The power converter comprises an input stage configured to receive an AC input voltage and convert it to a DC voltage, which is then supplied to input terminals of an asymmetrical half-bridge flyback converter. The asymmetrical half-bridge flyback converter includes a main transformer with a primary winding, a secondary winding, and an auxiliary winding, where the auxiliary winding is configured as a coupled inductor. Additionally, a diode is connected in series with the coupled inductor, with the coupled inductor and diode being arranged between the input stage and one of the input terminals of the asymmetrical half-bridge flyback converter. The output terminals of the converter are configured to supply an output voltage to an LED load.

It is provided a system (10) comprising multiple LED drivers (11a, 11b) connected in parallel and supplied by a common supply voltage (12), each of said multiple LED drivers (11a, 11b) having a respective power factor correction, PFC, input stage with a corresponding control switch, wherein respective switch-on times of the corresponding control switches of the PFC input stages are offset in time over an area of a switch-on cycle, and/or wherein the respective switch-on times of the corresponding control switches of the PFC input stages are de-synchronized.

A resonant hybrid flyback converter (10) comprises a flyback resonant tank (11) comprising a transformer comprising a primary side, and a secondary side with an output capacitance (12) for supplying a load, a half-bridge (13) comprising a high-side switch, and a low-side switch, said half-bridge configured to supply the primary side, and a controller (14). In this context, the controller (14) is configured to control an on-time of the high-side switch and/or an on-time of the low-side switch, preferably such that said on-time of the high-side switch and/or said on-time of the low-side switch is set before the high-side switch and/or the low-side switch is switched. Additionally or alternatively, the output capacitance (12) is configured such that a corresponding output capacitance value is so low that a THD, especially a current THD, of the resonant hybrid flyback converter (10) is lower than 5 per cent, preferably lower than 3 per cent, more preferably lower than 1 per cent, most preferably lower than 0.5 per cent.

An actively switched PFC circuit for an LED driver is provided. Said PFC circuit comprises input terminals for receiving a mains AC voltage, and a feedback control unit configured for constant control of the output voltage of the PFC circuit by controlling the operation of a switch of the PFC circuit. Said PFC circuit further comprises an internal sinusoidal reference voltage source or input terminals for an external sinusoidal reference voltage source, and a combining circuit configured to combine a voltage derived from the mains AC voltage with the sinusoidal reference voltage, and issue a correction signal based on a comparison between the two voltages. Said PFC circuit further comprises means for incorporating the correction signal into a feedback loop of the feedback control unit, thereby compensating deviations in the mains AC voltage from a sinusoidal waveform.

It is provided an actively switched power factor correction, PFC, stage (10) for an LED driver (20), comprising a control switch (11) having a control input (12), a control unit (13) configured to issue a switch-on time for the control switch (11) at a control port (14), and an external and/or auxiliary circuitry (15) connected to the control input (12) of the control switch (11) and to the control port (14) of the control unit (13). The external and/or auxiliary circuitry (15) is configured to sense the switch-on time issued by the control unit (13), to sense a rectified supply voltage (16) of the actively switched PFC stage (10), and to change and/or manipulate and/or shorten the switch-on time depending on the rectified supply voltage (16).

A rectifier stage (10), or namely a Dornbirn Rectifier, comprising a full wave rectifier (12) being supplied with an AC voltage (11), and supplying a half-bridge (14), a coupled inductor (15a), and two capacitors (13a, 13b) arranged in parallel on the supply side of the half-bridge (14), is provided. Said coupled inductor (15a) is connected between a midpoint of two switches (14a, 14b) of the half-bridge (14) and a midpoint between the two capacitors (13a, 13b), and is magnetically coupled with an inductor (15b) in a supply path of the AC voltage (11) to the rectifier (12). Said rectifier stage (10) further comprises two output terminals (16a, 16b) for supplying a rectified AC voltage, one output terminal being connected to the high potential side of the high potential switch and the other output terminal being connected to the low potential side of the low potential switch of the half-bridge.

The present invention provides a control unit (1) for controlling a flyback converter comprising a power switch (S<w>) and an active clamp circuit (3) having a clamp switch (S<a>), wherein the control unit (1) is configured to switch the clamp switch (S<a>) from the non-conducting state to the conducting state when a waiting time (t<off,HS>) has elapsed after switching the power switch (S<w>) from the conducting state to the non-conducting state, switch the power switch (S<w>) from the conducting state to the non-conducting state when a current (i<p>) flowing through the power switch (S<w>) being in the conducting state reaches a maximum current value (Î<p>), and compute the waiting time using an inductance of a primary winding (L1) of a transformer of the flyback converter, the maximum current value (Î<p>), a winding ratio (n) of the transformer and an output voltage (V<out>) of the flyback converter.

The invention provides a method for obtaining an inductance of a primary winding (L1) of a transformer of a flyback converter comprising a power switch (S_w) electrically connected in series with the primary winding (L1) of the transformer. The method comprises applying (M1) a DC voltage (V_in) to an input of the flyback converter, switching (M2) the power switch (S_w) from the non-conducting state to the conducting state and measuring a switch-on time until the power switch (S_w) switches from the conducting state to the non-conducting state as a result of the current (i_p) flowing through the power switch (S_w) in the conducting state reaching a maximum current value (Î_p), and computing (M3) the inductance of the primary winding (L1) of the transformer using the measured switch-on time, the DC voltage (V_in) and the maximum current value (Î_p). Further, a control unit for controlling the flyback converter is disclosed.

A power factor correction (PFC) circuit (10) for a LED driver, comprises an integrated control circuit (11) arranged to maintain a constant output voltage (12) of the PFC circuit (10) by controlling at least one switch (13) of the PFC circuit (10). Said integrated control circuit (11) is provided with an input pin (111) supplied with a signal representing the amplitude of an AC supply voltage supplied to input terminals (14) of the PFC circuit (10), and configured to stop the operation of the least one switch (13) when said signal falls below a preset minimum threshold value. Said PFC circuit (10) further comprises a signal adaptation circuit (15), supplied with said signal and arranged to modify the signal supplied to the input pin (111) such that it falls below said minimum threshold value when the amplitude of the AC supply voltage exceeds a predetermined maximum value.

A method for switching off an at least two-stage converter with the aid of an external bus signal is provided. Said method comprises the steps of switching off (101) a driver stage supplying an LED load when the external bus signal is received, and at least greatly reducing (102) a power transmission of a further driver stage supplying said driver stage, said further driver stage being electrically isolated and clocked on a primary side of the at least two-stage converter and having a regulated output voltage.

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The present disclosure relates to a light emitting diode module (LED module) comprising a substrate, a printed circuit board (PCB) arranged on the substrate, at least one first type LED configured to emit radiation suitable for generating white light, and at least one second type LED die configured to emit UV-B radiation. The PCB comprises an opening, and the at least one second type LED die is arranged on the substrate within the opening of the PCB. The present disclosure further relates to a lighting system comprising an LED driver, and an aforementioned LED module electrically connected to the LED driver. The LED driver is configured to electrically supply the LED module.

The preset invention relates to an installation housing arrangement with an installation housing (1) for an electronic device (12) comprising an antenna. The installation housing (1) is configured for installation in a building structure or a building technology device (22) and accommodates a fastening means (13..18) for fastening and positioning the electronic device (12) within the installation housing (1), wherein the fastening means (13..18) is made of a dielectric material that at least partially fills the installation housing (1).

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