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1. 发明公开

EP4429409A1 IDENTIFICATION AND COMPENSATION OF ANOMALIES AND ERRORS IN A LIGHTING SYSTEM 审中-公开
公开(公告)号：EP4429409A1
公开(公告)日：2024-09-11
申请号：EP23160627.8
申请日：2023-03-08
申请人： Tridonic GmbH & Co. KG
发明人： Stark, Stefan , Auer, Hans , Kucera, Clemens , Romano, Fabio , Saccavini, Lukas
IPC分类号： H05B47/175 , H05B47/21 , H05B45/50
CPC分类号： H05B45/50 , H05B47/22 , H05B47/175
摘要： The present disclosure relates to the field of lighting systems, lighting management and LED converters, to improved monitoring of system data of the lighting system, and to identification and compensation of anomalies and errors in such systems without recurring to brightness sensors for achieving constant light output. To this end, the present disclosure provides a system for lighting anomaly identification. The system comprises a first LED converter configured to obtain first system data available in the first LED converter and a at least one second LED converter configured to obtain second system data available in the second LED converter. The system further comprises a control device configured to identify a lighting anomaly based on the first system data and the second system data, wherein the first system data and the second system data is obtained in a sensor-less manner.

2. 发明公开

EP4372342A1 TEMPERATURE SENSOR CALIBRATION FOR ELECTRONIC DEVICES 审中-实审
公开(公告)号：EP4372342A1
公开(公告)日：2024-05-22
申请号：EP22207466.8
申请日：2022-11-15
申请人： Tridonic GmbH & Co. KG
发明人： Romano, Fabio , Succavini, Lukas , Kucera, Clemens , Stark, Stefan , Auer, Hans
IPC分类号： G01K3/00 , G01K7/01 , G01K15/00
CPC分类号： G01K15/005 , G01K7/01 , G01K3/005
摘要： A calibration method for a temperature sensor of an electronic device, wherein the electronic device comprises a temperature sensor, an electronic circuit configured to emit a predetermined amount of heat, and a control circuit. The method comprises steps of determining (Si) a first parameter value of a parameter of the electronic device that is representative for a first temperature of the electronic device; controlling (S2, S3), by the control circuit, the electronic circuit to emit the predetermined amount of heat for a predetermined time; determining (S4) a second parameter value of a parameter of the electronic device that is representative for a second temperature of the electronic device after the predetermined time has elapsed, calculating (S5), by the control circuit a gradient based on the determined first parameter value, the determined second parameter value, the first temperature and the second temperature, and determining a gain error based on the calculated gradient.

3. 发明公开

EP4344040A1 POWER CONVERTER FOR AT LEAST ONE LED, AND LED DRIVER 审中-实审
公开(公告)号：EP4344040A1
公开(公告)日：2024-03-27
申请号：EP22196742.5
申请日：2022-09-21
申请人： Tridonic GmbH & Co. KG
发明人： Saccavini, Lukas , Romano, Fabio , Stark, Stefan , Auer, Hans , Kucera, Clemens
IPC分类号： H02M3/158 , H02M3/335
摘要： Disclosed is a power converter (1) for at least one light-emitting device, LED, comprising: an inductor (105), including inductively coupled main and auxiliary windings (1051, 1052); an ohmic resistor (111) and a shunt switch (112) being connected in series with the auxiliary winding (1052); and a control unit (113), being configured to actuate (23) the shunt switch (112) during a discharged state of the main winding (1051). This suppresses an undesired resonant oscillation in light-load conditions of the converter (1), and avoids more expensive EMI filtering.

4. 发明公开

EP3907871A1 RESONANT HALF-BRIDGE CONVERTER WITH ADAPTIVE DEAD-TIME 审中-实审
公开(公告)号：EP3907871A1
公开(公告)日：2021-11-10
申请号：EP20172881.3
申请日：2020-05-05
申请人： Tridonic GmbH & Co. KG
发明人： Stark, Stefan , Kucera, Clemens , Netzer, Harald
IPC分类号： H02M1/38 , H02M3/335 , H02M1/00
摘要： A converter (1) for supplying a load (4) is provided. The converter (1) comprises a half bridge (6). The converter (1) moreover comprises a capacitive current compensation circuit (10), which is configured to adjust a dead time of the half bridge (6), in order to prevent capacitive current. The capacitive current compensation circuit (10) moreover comprises a capacitive current compensation activation circuit (13), configured to selectively activate and deactivate the adjusting of the dead time of the half bridge (6), based on an operation state of the converter (1) and/or a statistical analysis of an occurrence of capacitive current events.

5. 发明公开

EP4443723A1 PRIMARY-SIDE SWITCHED ISOLATED CONVERTER, METHOD OF OPERATING THE SAME, AND LUMINAIRE COMPRISING SAID CONVERTER 审中-公开
公开(公告)号：EP4443723A1
公开(公告)日：2024-10-09
申请号：EP23166657.9
申请日：2023-04-05
申请人： Tridonic GmbH & Co. KG
发明人： Auer, Hans , Saccavini, Lukas , Stark, Stefan , Romano, Fabio , Kucera, Clemens , Schneider, Miguel Philipp , Lochmann, Frank
IPC分类号： H02M1/00 , G01R19/00 , G01R19/10 , G01R19/175 , H02M3/335 , H05B45/00 , H05B45/382 , H05B45/385 , H05B45/392
CPC分类号： H02M3/335 , H02M1/0009 , H02M3/33523 , G01R19/10 , H05B45/37
摘要： A primary-side switched isolated converter (1) comprises a sensing element, e.g. shunt resistor (122), being configured to measure a secondary-side signal (123, Ufb) of a secondary-side circuit (12x) of the converter (1). The converter (1) further comprises a pair of isolation resistors (133, R2; 134, R4), being configured to transmit first and second differential signals (11502, Ui, 11504, U2) being indicative of the measured secondary-side signal (123, Ufb) across an isolation barrier (131) of the converter (1) to an evaluation circuit (115) of a primary-side circuit (11x) of the converter (1), the evaluation circuit (115) being configured to acquire the measured secondary-side signal (123, Ufb) from a difference (11511, Uo) of the first and second differential signals (11502, Ui, 11504, U2) at periodic time instants in dependence of a primary-side signal of the primary-side circuit (11x) of the converter (1). This avoids the impact of common-mode voltage and yields a more cost-efficient secondary-side sensing.

6. 发明公开

EP4287484A1 SYNCHRONOUS ISOLATED LED CONVERTER, LED POWER SUPPLY AND LED LUMINAIRE 审中-实审
公开(公告)号：EP4287484A1
公开(公告)日：2023-12-06
申请号：EP22176955.7
申请日：2022-06-02
申请人： Tridonic GmbH & Co KG
发明人： Stark, Stefan , Nachbaur, Stefan , Schertler, Markus , Walch, Patrick
IPC分类号： H02M3/335
摘要： Disclosed is a synchronous isolated LED converter (1). The converter (1) comprises a main transformer (111, 112, 113), a voltage sensing circuit (14), a controller (16), an ancillary transformer (191, 192), and a switch (20). The main transformer (111, 112, 113) is configured to transform electric power from an input-side electric potential (12) of the converter (1) to an output-side electric potential (13) of the converter (1), and includes an auxiliary winding (113). The voltage sensing circuit (14) is connected to the auxiliary winding (113) and configured to generate a voltage sensing signal (15, V SNS2 ) in accordance with a voltage across the auxiliary winding (113). The controller (16) is connected to the voltage sensing circuit (14) and configured to provide a drive current (17, I SW2 ) in accordance with a sampling of the voltage sensing signal (15, V SNS2 ). The sampled voltage sensing signal (15, V SNS2 ) is indicative of an output voltage (18, V LED ) of the converter (1), and the drive current (17, I SW2 ) is associated with the input-side electric potential (12). The ancillary transformer (191, 192) is connected to the controller (16) and configured to transform the drive current (17, I SW2 ) from the input-side electric potential (12) to the output-side electric potential (13). The switch (20) is operable in accordance with the transformed drive current (17, I SW2 ). The controller (16) is further configured to sample the voltage sensing signal (15, V SNS2 ) in accordance with a zero-crossing of an output-side current (I 2 ) of the converter (1), yet asynchronously with respect to pulse edges of the drive current (17, I SW2 ). This avoids an incorrect voltage sensing in a cost-efficient manner.

7. 发明公开

EP4271136A1 LED DRIVER WITH SELF-TEST CAPABILITIES 审中-实审
公开(公告)号：EP4271136A1
公开(公告)日：2023-11-01
申请号：EP22170538.7
申请日：2022-04-28
申请人： Tridonic GmbH & Co. KG
发明人： Schmölzer, Andreas , Zengerle, Thomas , Klein, Tobias , Carracedo Cordovilla, Luis Javier , Hüttinger, Ulrich , Saccavini, Lukas , Romano, Fabio , Auer, Hans , Stark, Stefan , Kucera, Clemens
IPC分类号： H05B45/50
摘要： A driver device comprises a converter circuit configured to generate and output a load current for driving an electric load and a control circuit configured to control operation of the converter circuit. The control circuit is configured to perform a functional test for testing electronic circuitry of the driver device that includes the converter circuit. The driver device may be a light driver device, preferably for proving the load current to a LED lighting device. The control circuit is configured to perform the functional test by executing a test routine for testing at least one electrical parameters of the driver device.

8. 发明公开

EP4271135A1 LED-DRIVER WITH ANOMALY DETECTION CAPABILITIES 审中-实审
公开(公告)号：EP4271135A1
公开(公告)日：2023-11-01
申请号：EP22169896.2
申请日：2022-04-26
申请人： Tridonic GmbH & Co. KG
发明人： Schmölzer, Andreas , Zengerle, Thomas , Klein, Tobias , Carracedo Cordovilla, Luis Javier , Hüttinger, Ulrich , Saccavini, Lukas , Romano, Fabio , Auer, Hans , Stark, Stefan , Kucera, Clemens
IPC分类号： H05B45/50 , H05B45/58 , G05B23/02 , H05B47/20 , H05B47/21
摘要： The invention concerns a method for detecting anomalous events in a driver device of a building infrastructure system, a corresponding driver device, e.g. a light driver device, and a building infrastructure system. The method comprises, in a usage profile generating phase, obtaining parameter data for at least one physical parameter of the driver device during operation of the driver device in the building infrastructure system during a predefined time period; and generating a usage profile for the driver device based on the obtained parameter data. The generated usage profile includes characteristic parameter ranges for the at least one physical parameter determined based on the obtained parameter data. In a subsequent monitoring phase, the method obtains current parameter data for the at least one physical parameter of the driver device, then determines whether an anomalous event in the driver device has occurred by comparing the obtained current parameter data with the usage profile of the driver device. The method generates and outputs a signal generated based on the determined anomalous event.

9. 发明公开

EP4192196A1 CONTROL SYSTEM AND METHOD FOR CONTROLLING A CURRENT SOURCE CONFIGURED TO PROVIDE CURRENT TO LIGHTING MEANS, OPERATING DEVICE FOR LIGHTING MEANS, AND LUMINAIRE 审中-实审
公开(公告)号：EP4192196A1
公开(公告)日：2023-06-07
申请号：EP21212436.6
申请日：2021-12-06
申请人： Tridonic GmbH & Co. KG
发明人： Auer, Hans , Saccavini, Lukas , Stark, Stefan
IPC分类号： H05B45/36 , H02M1/00
摘要： The invention relates to a control system (1) for controlling a current source (7) configured to provide a current (I LM ) to lighting means (8). The lighting means are optional at least one light emitting diode (LED). The control system (1) is configured to obtain a first reference current (I ref1 ) for the current (I LM ) and generate, based on the first reference current (I ref ), a second reference current (I ref2 ), wherein an amplitude of the second reference current (I ref2 ) periodically changes, with a frequency, around an amplitude of the first reference current (I ref1 ). Further, the control system (1) is configured to perform a feedback control of the current (I LM ) with regard to the second reference current (I ref2 ). The invention further relates to an operating device (13) for lighting means (8), comprising such a control system (1); a luminaire (14) comprising such an operating device (13); and a method for controlling a current source.

10. 发明公开

EP4358647A1 SYNCHRONOUS FLYBACK CONVERTER WITH FEEDBACK-CONTROLLED SECONDARY SIDE SWITCH 审中-实审
公开(公告)号：EP4358647A1
公开(公告)日：2024-04-24
申请号：EP22202363.2
申请日：2022-10-19
申请人： Tridonic GmbH & Co KG
发明人： Schertler, Markus , Stark, Stefan , Nachbaur, Stefan , Walch, Patrick
IPC分类号： H05B45/32 , H05B45/335 , H02M3/335
CPC分类号： H02M3/33592 , H02M3/33523 , H05B45/385
摘要： A method is proposed for operating a synchronous flyback converter arranged to supply lighting means at its output terminals, the flyback converter having a transformer galvanically separating a primary side and secondary side of the converter. The power transmitted by the converter is feedback-controlled by actively adjusting the conducting time period of secondary side switch, thus adjusting the amount of a negative current flowing through said switch. In case of a change of a nominal value signal commanding the power to be transmitted by the flyback converter, a switching operation parameter of a primary side switch of the converter is adjusted by a feed forward manner. In case of such change of nominal value a feed forward disturbance signal is applied to the conducting time period of secondary side switch.

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