公开(公告)号：US11031809B2

公开(公告)日：2021-06-08

申请号：US16715603

申请日：2019-12-16

申请人： SIGNIFY HOLDING B.V.

发明人： Priya Ranjan Mishra ,  Rakeshbabu Panguloori ,  Venkata Sriram Pullela

IPC分类号： H02J9/06 ,  H02J9/02 ,  H05B47/11 ,  H05B47/105 ,  H05B47/185

摘要： A lighting network (100) and methods therefore are disclosed. The lighting network (100) a plurality of lighting units (10) that can operate on AC power and DC back up power if the AC power is removed. A controller (15) is used to redistribute the DC power between the plurality of lighting units (10) in the event that DC power is low or exhausted in one of the plurality of lighting units (10).

公开(公告)号：US10397999B2

公开(公告)日：2019-08-27

申请号：US16051699

申请日：2018-08-01

申请人： SIGNIFY HOLDING B.V.

发明人： Priya Ranjan Mishra ,  Rakeshbabu Panguloori

IPC分类号： H05B33/08 ,  H05B37/02

摘要： The invention provides a lighting controller, comprising: a detector adapted to detect a voltage of a power source, said power source is for providing power to a lighting unit via a lighting driver; a controlling unit, coupled to the lighting driver and adapted for controlling the driver to deliver a constant power to the lighting unit regardless of the power source is being consumed, before the detected voltage drops below a first threshold, and controlling the driver to deliver a gradually reduced power to the lighting unit after the detected voltage drops below the first threshold. Wherein the controlling unit is further adapted for switching an up-converter between the power source and the driver to boost the output voltage from the power source to the driver, in a first condition; and bypassing said up-converter, in a second condition, and implementing said step of controlling the driver; wherein said first condition comprises operating in high occupancy periods, and said second condition comprises operating in low occupancy period.

公开(公告)号：US10547205B2

公开(公告)日：2020-01-28

申请号：US14405590

申请日：2013-05-14

申请人： SIGNIFY HOLDING B.V.

发明人： Priya Ranjan Mishra ,  Rakeshbabu Panguloori ,  Venkata Sriram Pullela

IPC分类号： H02J9/06 ,  H05B37/02

摘要： A lighting network and methods therefore are disclosed. The lighting network includes a plurality of lighting units that can operate on AC power and DC back up power if the AC power is removed. A controller is used to redistribute the DC power between the plurality of lighting units in the event that DC power is low or exhausted in one of the plurality of lighting units.

公开(公告)号：US10397998B2

公开(公告)日：2019-08-27

申请号：US15525547

申请日：2015-11-09

申请人： SIGNIFY HOLDING B.V.

发明人： Priya Ranjan Mishra ,  Rakeshbabu Panguloori

IPC分类号： H05B33/08

摘要： A driver circuit has a driver unit (50) which provides a current for the load (51) based on an input voltage (10) comprising first and second terminals (10a, 10b). The driver unit (50) comprises a linear driver which comprises a current regulating element (Q3) between the input and the load, said element having a controllable resistive characteristic. A compensation unit (52) in series with the driver unit (50) and the input voltage provides a compensating voltage. This is used to control the voltage across the driver unit in dependence on the input voltage and operating conditions of the load. The compensation unit (52) comprises a switch mode power converter and a second capacitor (C2) as an energy source of the switch mode power converter, with the current regulating element (Q3), the load (51) and the second capacitor (C2) in series connection between the first and second terminals (10a, 10b). In this way, the operating range of the driver unit can be reduced to reduce power loss on the driver unit, and the compensating voltage can also be used with an energy harvesting system to increase overall system efficiency.