Patents by Inventor RAKESHBABU PANGULOORI
RAKESHBABU PANGULOORI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11031809Abstract: 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).Type: GrantFiled: December 16, 2019Date of Patent: June 8, 2021Assignee: SIGNIFY HOLDING B.V.Inventors: Priya Ranjan Mishra, Rakeshbabu Panguloori, Venkata Sriram Pullela
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Publication number: 20200119583Abstract: 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).Type: ApplicationFiled: December 16, 2019Publication date: April 16, 2020Inventors: Priya Ranjan MISHRA, Rakeshbabu PANGULOORI, Venkata Sriram PULLELA
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Patent number: 10547205Abstract: 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.Type: GrantFiled: May 14, 2013Date of Patent: January 28, 2020Assignee: SIGNIFY HOLDING B.V.Inventors: Priya Ranjan Mishra, Rakeshbabu Panguloori, Venkata Sriram Pullela
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Patent number: 10397999Abstract: 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.Type: GrantFiled: August 1, 2018Date of Patent: August 27, 2019Assignee: SIGNIFY HOLDING B.V.Inventors: Priya Ranjan Mishra, Rakeshbabu Panguloori
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Patent number: 10397998Abstract: 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).Type: GrantFiled: November 9, 2015Date of Patent: August 27, 2019Assignee: SIGNIFY HOLDING B.V.Inventors: Priya Ranjan Mishra, Rakeshbabu Panguloori
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Patent number: 10231306Abstract: 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.Type: GrantFiled: October 10, 2015Date of Patent: March 12, 2019Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Priya Ranjan Mishra, Rakeshbabu Panguloori
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Publication number: 20180343719Abstract: 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.Type: ApplicationFiled: August 1, 2018Publication date: November 29, 2018Inventors: Priya Ranjan MISHRA, Rakeshbabu PANGULOORI
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Patent number: 9948106Abstract: Devices (10) convert source power from first sources (11) that receive solar/wind/water energy into load power destined for loads (13). The devices (10) comprise first converters (21) for converting first direct-current voltage signals from the first sources (11) to second direct-current voltage signals destined for the loads (13), first arrangements (31) for controlling the first converters (21) and regulating the second direct-current voltage signals in response to first control voltage signals, and first circuits (41) for providing the first control voltage signals. To prevent a collapse of the first direct-current voltage signals when having relatively small amplitudes, the first control voltage signals should have amplitudes equal to/larger than minimum values.Type: GrantFiled: March 21, 2014Date of Patent: April 17, 2018Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Priya Ranjan Mishra, Rakeshbabu Panguloori
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Patent number: 9912155Abstract: Devices (1) for controlling gates (21-24) arranged to control amounts of power to be supplied to loads (51-54) via cables (2) may comprise receivers (11) for receiving requesting signals from the gates (21-24), analyzers (12) for analyzing requests defined by the requesting signals in view of available cable power capacities, generators (13) for in response to analysis results generating instructions for the gates (21-24) and transmitters for transmitting instructing signals defining the instructions to the gates (21-24). The analyzers (12) may analyze the requests in view of load-information comprising steady-state-information/transient-state-information. The devices (1) may comprise communicators (15) for communication with auxiliary converters (31-33) coupled to auxiliary sources (41-43) such as batteries (41) and solar panels (42, 43) and may comprise predictors (16) for predicting the available cable power capacities.Type: GrantFiled: May 22, 2014Date of Patent: March 6, 2018Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Rakeshbabu Panguloori, Priya Ranjan Mishra
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Patent number: 9912163Abstract: The present invention relates to a circuit arrangement for mitigating power quality issues. It offers protection to sensitive devices against, for example, voltage sags and swells. The system introduces, for loads connected to an AC power source (e.g. a TV in a home connected to the power grid) a DC power source coupled to a controllable inverter and a controllable switching mechanism. By switching to a series configuration, the DC power source (e.g. a photovoltaic power source) can either draw or supply power in order to mitigate a power quality issue. In normal operation, by switching to a parallel configuration the DC power source can feed the load.Type: GrantFiled: November 19, 2013Date of Patent: March 6, 2018Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Priya Ranjan Mishra, Rakeshbabu Panguloori, Arup Dalal, Sagar Goel
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Patent number: 9906024Abstract: Devices (20) for coupling sources (11, 12) to loads (13) comprise first converters (21) for converting first input signals from first sources (11) into first output signals. The first converters (21) comprise control inputs for receiving control signals. Control values of the control signals define first parameters of the first output signals. Circuits (23) in the devices (20) receive the first output signals and receive second output signals originating from second sources (12) or from second converters (22) coupled to the second sources (12) and provide power signals to the loads (13). The second sources (12) comprise solar panels. Controllers (24) adapt the control values of the control signals in response to detections of changes in second parameters of the first input or output signals. The controllers (24) may operate independently from the second output signals and from second input signals.Type: GrantFiled: March 13, 2014Date of Patent: February 27, 2018Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Priya Ranjan Mishra, Rakeshbabu Panguloori, Vandana Prabhu
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Publication number: 20170325306Abstract: 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).Type: ApplicationFiled: November 9, 2015Publication date: November 9, 2017Inventors: PRIYA RANJAN MISHRA, RAKESHBABU PANGULOORI
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Publication number: 20170245337Abstract: 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.Type: ApplicationFiled: October 10, 2015Publication date: August 24, 2017Inventors: PRIYA RANJAN MISHRA, RAKESHBABU PANGULOORI
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Patent number: 9653945Abstract: A system, comprising a solar circuit (2), a coupling circuit (1), a converter circuit (5), a source circuit (3), and a load circuit (4), wherein the coupling circuit (1) couples in a first, charging mode the solar circuit (2) to the source circuit (3) via the converter circuit (5) and couples in a second, feeding mode the source circuit (3) to the load circuit (4) via the converter circuit (5). A power flow through the converter circuit (5) has a same direction in both modes. In the first mode, a charging current is guided from the solar circuit (2) to the source circuit (3) via the converter circuit (5) for charging the source circuit (3). In the second mode, a feeding current is guided from the source circuit (3) to the load circuit (4) via the converter circuit (5) for feeding the load circuit (4). The coupling circuit (1) may comprise a first switch (11) and a second switch (12) and a control circuit (13-21) for controlling the first and second switches (11, 12).Type: GrantFiled: December 30, 2014Date of Patent: May 16, 2017Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Priya Ranjan Mishra, Rakeshbabu Panguloori
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Publication number: 20170077868Abstract: Controllers (1) control converters (2) that convert first power from solar arrangements (3) into second power for battery arrangements (4). Said control comprises, in response to detections of values of current signals flowing through the battery arrangements (4), adjustments of impedances of the converters (2) for maximizing the current signals. A kind of maximum power point tracking is performed, without many multiplications of voltage signals and current signals provided by the solar arrangements (3) needing to be performed. Said adjustments may comprise adjustments in first directions in case the values of the current signals flowing through the battery arrangements (4) show increases and adjustments in different second directions in case the values of the current signals flowing through the battery arrangements (4) show decreases. Said adjustments may comprise adaptations of pulse width modulations of the converters (2).Type: ApplicationFiled: February 9, 2015Publication date: March 16, 2017Applicant: PHILIPS LIGHTING HOLDING B.V.Inventors: PRIYA RANJAN MISHRA, RAKESHBABU PANGULOORI, SREENIVASA CHARY BANALA
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Publication number: 20160372930Abstract: The present invention relates to a circuit arrangement for mitigating power quality issues. It offers protection to sensitive devices against, for example, voltage sags and swells. The system introduces, for loads connected to an AC power source (e.g. a TV in a home connected to the power grid) a DC power source coupled to a controllable inverter and a controllable switching mechanism. By switching to a series configuration, the DC power source (e.g. a photovoltaic power source) can either draw or supply power in order to mitigate a power quality issue. In normal operation, by switching to a parallel configuration the DC power source can feed the load.Type: ApplicationFiled: November 19, 2013Publication date: December 22, 2016Inventors: PRIYA RANJAN MISHRA, RAKESHBABU PANGULOORI, ARUP DALAL, SAGAR GOEL
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Patent number: 9504130Abstract: Devices (1) for selecting settings for illuminating light loads (2, 3) connected to a bus (4) comprise controllers (11) for running processes and for defining, through controls of power converters (5, 6) connected to the bus (4), in response to process results, direct current voltage signals for the bus (4) and comprise power detectors (12) for detecting changes in total power consumptions of the illuminating light loads (2, 3) and for in response to detections of the changes informing the controllers (11) to run the processes again. This way, links are created between the total power consumption via the bus (4) and the direct current voltage signal on the bus (4), to save energy.Type: GrantFiled: January 2, 2014Date of Patent: November 22, 2016Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Rakeshbabu Panguloori, Priya Ranjan Mishra
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Publication number: 20160308387Abstract: A system, comprising a solar circuit (2), a coupling circuit (1), a converter circuit (5), a source circuit (3), and a load circuit (4), wherein the coupling circuit (1) couples in a first, charging mode the solar circuit (2) to the source circuit (3) via the converter circuit (5) and couples in a second, feeding mode the source circuit (3) to the load circuit (4) via the converter circuit (5). A power flow through the converter circuit (5) has a same direction in both modes. In the first mode, a charging current is guided from the solar circuit (2) to the source circuit (3) via the converter circuit (5) for charging the source circuit (3). In the second mode, a feeding current is guided from the source circuit (3) to the load circuit (4) via the converter circuit (5) for feeding the load circuit (4). The coupling circuit (1) may comprise a first switch (11) and a second switch (12) and a control circuit (13-21) for controlling the first and second switches (11, 12).Type: ApplicationFiled: December 30, 2014Publication date: October 20, 2016Inventors: PRIYA RANJAN MISHRA, RAKESHBABU PANGULOORI
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Publication number: 20160126736Abstract: Devices (1) for controlling gates (21-24) arranged to control amounts of power to be supplied to loads (51-54) via cables (2) may comprise receivers (11) for receiving requesting signals from the gates (21-24), analyzers (12) for analyzing requests defined by the requesting signals in view of available cable power capacities, generators (13) for in response to analysis results generating instructions for the gates (21-24) and transmitters for transmitting instructing signals defining the instructions to the gates (21-24). The analyzers (12) may analyze the requests in view of load-information comprising steady-state-information/transient-state-information. The devices (1) may comprise communicators (15) for communication with auxiliary converters (31-33) coupled to auxiliary sources (41-43) such as batteries (41) and solar panels (42, 43) and may comprise predictors (16) for predicting the available cable power capacities.Type: ApplicationFiled: May 22, 2014Publication date: May 5, 2016Inventors: RAKESHBABU PANGULOORI, PRIYA RANJAN MISHRA
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Publication number: 20160036223Abstract: Devices (20) for coupling sources (11, 12) to loads (13) comprise first converters (21) for converting first input signals from first sources (11) into first output signals. The first converters (21) comprise control inputs for receiving control signals. Control values of the control signals define first parameters of the first output signals. Circuits (23) in the devices (20) receive the first output signals and receive second output signals originating from second sources (12) or from second converters (22) coupled to the second sources (12) and provide power signals to the loads (13). The second sources (12) comprise solar panels. Controllers (24) adapt the control values of the control signals in response to detections of changes in second parameters of the first input or output signals. The controllers (24) may operate independently from the second output signals and from second input signals.Type: ApplicationFiled: March 13, 2014Publication date: February 4, 2016Inventors: PRIYA RANJAN MISHRA, RAKESHBABU PANGULOORI, VANDANA PRABHU