Patents by Inventor Priya Ranjan Mishra
Priya Ranjan Mishra 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: 11512825Abstract: The present disclosure relates to a lighting device (100) comprising a lighting unit (102), at least one application unit (104), and a battery housing (106) comprising a first battery compartment (108) with a first electrical contact set (110) for accommodating and connecting a first battery and with a second battery compartment (112) with a second electrical contact set (114) for accommodating and connecting a second battery, wherein the first and second battery compartments are configured to force an exclusive spatial accommodation of only one of the first and second batteries in the battery housing at a given point in time. The lighting unit is electrically connected to the first electrical contact set for being powered by the first battery in a first operational mode and the application unit is electrically connected to the second electrical contact set for being powered by the second battery in a second operational mode.Type: GrantFiled: February 18, 2019Date of Patent: November 29, 2022Assignee: SIGNIFY HOLDING B.V.Inventors: Bernd Ackermann, Matthias Wendt, Goutam Maji, Priya Ranjan Mishra, Eduard Gerhard Zondag
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Patent number: 11394235Abstract: A power conversion system is to be used with an energy source. A plurality of conversion units are used in series via their output with the energy source output. A positive pin of a first converter and the negative pin of a last converter of the series are for connection to an output (14, 16) of the energy source, and for each two neighboring converters in this series a negative pin of an upstream converter is connected to a positive pin of a downstream converter which both pins are decoupled from the energy source except for the positive pin of the first converter and the negative pin of the last converter. A master monitor unit is adapted to monitor the output power of the energy source and to control the input voltage of each conversion unit synchronously in dependence on the monitored output power. In this way, a set of conversion units are configured, with the conversion units sharing the output from the energy source. This provides a scalable system.Type: GrantFiled: May 1, 2018Date of Patent: July 19, 2022Assignee: SIGNIFY HOLDING B.V.Inventors: Goutam Maji, Priya Ranjan Mishra
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Patent number: 11289916Abstract: A lighting system has a set of multiple LED luminaires, and combines solar panel power and external grid power. A solar converter converts the output from the solar panel into a first power. Each luminaire is associated with a driver to inject current into the LED lighting unit from the external grid power supply. The LED lighting units of the luminaires are connected together to the solar converter and are thereby driven together by the first power simultaneously. This simplifies the structure.Type: GrantFiled: January 28, 2019Date of Patent: March 29, 2022Assignee: SIGNIFY HOLDING B.V.Inventors: Goutam Maji, Priya Ranjan Mishra, Srikanth Tunga
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Patent number: 11239666Abstract: The present invention relates to an application device comprising an integrated energy storage, an application controller and a method of operating an application system, supporting different operation modes. In a first operation mode, AC power is provided via a distribution line to operate the application device. In a second mode, the AC power transmission at the distribution line is replaced by data communication, wherein the application device is run by energy from the energy storage during the second operation mode. Preferably in a third operation mode, DC power from the energy storage of an application device may be provided via the distribution line to another application device.Type: GrantFiled: July 30, 2018Date of Patent: February 1, 2022Assignee: SIGNIFY HOLDING B.V.Inventors: Priya Ranjan Mishra, Matthias Wendt, Harald Josef Günther Radermacher
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Patent number: 11166356Abstract: The present invention relates to a functional device (10) powered by a constant current driver (12). The device (10) comprises constant current driver (12), electrical energy storage unit (14), functional unit (16), and control unit (18). The device (10) is controlled by the control unit (18) such that the constant current driver (12) provides a constant current to the functional unit (16) and the storage unit (14) in dependence of a pulse width modulated voltage signal. Current is provided to the storage unit (14) for charging the storage unit (14) during at least part of off periods of the pulse width modulated voltage signal. During on periods of the pulse width modulated voltage signal, current is provided to the functional unit (16) and no current is provided to the storage unit (14). This allows providing the device with a constant current driver with less idle periods and lower current supply.Type: GrantFiled: January 15, 2019Date of Patent: November 2, 2021Assignee: SIGNIFY HOLDING B.V.Inventors: Priya Ranjan Mishra, Matthias Wendt
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Patent number: 11139658Abstract: A power conversion system has a plurality of power tracking converters connected in parallel to an output of an energy source such as a solar system. A communication system between the converters implements a sequence of operation of the converters, such that in response to a communication signal from a preceding converter in the sequence, each converter performs tuning of its power tracking function and then provides a communication signal to the next converter in the sequence. Each converter for example functions as a maximum power point tracking system. The system may be made from a set of smaller units so that different systems may be formed from a small set of standard components. By operating the converters in a sequence, conflict between the converters and instability is avoided.Type: GrantFiled: May 8, 2018Date of Patent: October 5, 2021Assignee: SIGNIFY HOLDING B.V.Inventors: Priya Ranjan Mishra, Goutam Maji
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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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Patent number: 11019698Abstract: A retrofit Light Emitting Diode, LED, lighting device for connection to an electronic ballast, wherein said retrofit LED lighting device comprising an LED array for emitting light, an alternating current, AC, LED driver arranged for receiving an AC supply voltage or an AC supply current, from said electronic ballast and for driving said LED array based on said received AC supply voltage or said AC supply current, at least one switch, wherein in a closed position of said at least one switch, said retrofit LED lighting device provides a closed loop current circuit for an electronic ballast connected to said retrofit LED lighting device and in an open position of said at least one switch, said retrofit LED lighting device provides an open loop current circuit for an electronic ballast connected to said retrofit LED lighting device thereby simulating an absence of said LED lighting device to said electronic ballast, an auxiliary power supply and a stand-alone external trigger circuit, connected to said auxiliaryType: GrantFiled: February 5, 2019Date of Patent: May 25, 2021Assignee: Signify Holding B.V.Inventors: Bernd Ackermann, Matthias Wendt, Priya Ranjan Mishra, Goutam Maji
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Publication number: 20210116089Abstract: The invention relates to a lighting device (100) comprising a lighting unit (102), at least one application unit (104), and a battery housing (106) comprising a first battery compartment (108) with a first electrical contact set (110) for accommodating and connecting a first battery and with a second battery compartment (112) with a second electrical contact set (114) for accommodating and connecting a second battery, wherein the first and second battery compartments are configured to force an exclusive spatial accommodation of only one of the first and second batteries in the battery housing at a given point in time. The lighting unit is electrically connected to the first electrical contact set for being powered by the first battery in a first operational mode and the application unit is electrically connected to the second electrical contact set for being powered by the second battery in a second operational mode.Type: ApplicationFiled: February 18, 2019Publication date: April 22, 2021Inventors: Bernd ACKERMANN, Matthias WENDT, Goutam MAJI, Priya Ranjan MISHRA, Eduard Gerhard ZONDAG
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Publication number: 20210099010Abstract: A lighting system comprises a first lighting unit with a first energy storage device and a second unit with a second energy storage device, wherein said first lighting unit and said second unit are spatially separated from each other. Energy of the first energy storage device may be relocated to the second energy storage device in response to reception of a hazard signal such as a fire alarm signal, in particular relating to the location of the first energy storage device. This system reduces fire risks in a building having a networked lighting system, such as used in an office environment.Type: ApplicationFiled: April 5, 2018Publication date: April 1, 2021Inventor: Priya Ranjan MISHRA
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Publication number: 20210050727Abstract: A lighting system has a set of multiple LED luminaires, and combines solar panel power and external grid power. A solar converter converts the output from the solar panel into a first power. Each luminaire is associated with a driver to inject current into the LED lighting unit from the external grid power supply. The LED lighting units of the luminaires are connected together to the solar converter and are thereby driven together by the first power simultaneously. This simplifies the structure.Type: ApplicationFiled: January 28, 2019Publication date: February 18, 2021Inventors: GOUTAM MAJI, PRIYA RANJAN MISHRA, SRIKANTH TUNGA
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A RETROFIT LIGHT EMITTING DIODE, LED, LIGHTING DEVICE WITH REDUCED POWER CONSUMPTION IN STANDBY MODE
Publication number: 20210037627Abstract: A retrofit Light Emitting Diode, LED, lighting device for connection to an electronic ballast, wherein said retrofit LED lighting device comprising an LED array for emitting light, an alternating current, AC, LED driver arranged for receiving an AC supply voltage or an AC supply current, from said electronic ballast and for driving said LED array based on said received AC supply voltage or said AC supply current, at least one switch, wherein in a closed position of said at least one switch, said retrofit LED lighting device provides a closed loop current circuit for an electronic ballast connected to said retrofit LED lighting device and in an open position of said at least one switch, said retrofit LED lighting device provides an open loop current circuit for an electronic ballast connected to said retrofit LED lighting device thereby simulating an absence of said LED lighting device to said electronic ballast, an auxiliary power supply and a stand-alone external trigger circuit, connected to said auxiliaryType: ApplicationFiled: February 5, 2019Publication date: February 4, 2021Inventors: BERND ACKERMANN, MATTHIAS WENDT, PRIYA RANJAN MISHRA, GOUTAM MAJI -
Publication number: 20200396810Abstract: The present invention relates to a functional device (10) powered by a constant current driver (12). The device (10) comprises constant current driver (12), electrical energy storage unit (14), functional unit (16), and control unit (18). The device (10) is controlled by the control unit (18) such that the constant current driver (12) provides a constant current to the functional unit (16) and the storage unit (14) in dependence of a pulse width modulated voltage signal. Current is provided to the storage unit (14) for charging the storage unit (14) during at least part of off periods of the pulse width modulated voltage signal. During on periods of the pulse width modulated voltage signal, current is provided to the functional unit (16) and no current is provided to the storage unit (14). This allows providing the device with a constant current driver with less idle periods and lower current supply.Type: ApplicationFiled: January 15, 2019Publication date: December 17, 2020Inventors: Priya Ranjan MISHRA, Matthias WENDT
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Publication number: 20200366102Abstract: The present invention relates to an application device comprising an integrated energy storage, an application controller and a method of operating an application system, supporting different operation modes. In a first operation mode, AC power is provided via a distribution line to operate the application device. In a second mode, the AC power transmission at the distribution line is replaced by data communication, wherein the application device is run by energy from the energy storage during the second operation mode. Preferably in a third operation mode, DC power from the energy storage of an application device may be provided via the distribution line to another application device.Type: ApplicationFiled: July 30, 2018Publication date: November 19, 2020Inventors: Priya Ranjan MISHRA, Matthias WENDT, Harald Josef Günther RADERMACHER
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Publication number: 20200169108Abstract: A battery control system is used with a battery, and has a converter to charge and/or discharge the battery. The converter is thermally coupled to the battery, and the temperature of the battery is sensed. A control circuit is provided for controlling the efficiency or power loss of the converter according to the temperature of the battery sensed by the sensor, thereby to alter the level of thermal heat generation, and in turn, transfer from the converter to the battery. In this way, the battery temperature is controlled so that the life time of the battery can be extended. It makes use of the existing converter to deliver thermal energy, so that a separate heater is avoided.Type: ApplicationFiled: May 28, 2018Publication date: May 28, 2020Inventors: Goutam MAJI, Priya Ranjan MISHRA
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Publication number: 20200161856Abstract: A power distribution system receives an AC power supply (10) and supplies power to a plurality of electrical loads (A1-A4, . . . , J1-J4) over a distribution network. The system has a plurality of DC power supplies (13) for use when the AC power supply is unavailable. A system controller (14) controls the plurality of DC power supplies to supply a time-averaged DC current which is equal to or smaller than an RMS current rating of the power lines (W1, W2) of the distribution network.Type: ApplicationFiled: July 23, 2018Publication date: May 21, 2020Inventors: Priya Ranjan MISHRA, Matthias WENDT, Goutam MAJI
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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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Publication number: 20200076226Abstract: A power conversion system is to be used with an energy source. A plurality of conversion units are used in series via their output with the energy source output. A positive pin of a first converter and the negative pin of a last converter of the series are for connection to an output (14, 16) of the energy source, and for each two neighboring converters in this series a negative pin of an upstream converter is connected to a positive pin of a downstream converter which both pins are decoupled from the energy source except for the positive pin of the first converter and the negative pin of the last converter. A master monitor unit is adapted to monitor the output power of the energy source and to control the input voltage of each conversion unit synchronously in dependence on the monitored output power. In this way, a set of conversion units are configured, with the conversion units sharing the output from the energy source. This provides a scalable system.Type: ApplicationFiled: May 1, 2018Publication date: March 5, 2020Inventors: Goutam MAJI, Priya Ranjan MISHRA
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Publication number: 20200067320Abstract: A power conversion system has a plurality of power tracking converters connected in parallel to an output of an energy source such as a solar system. A communication system between the converters implements a sequence of operation of the converters, such that in response to a communication signal from a preceding converter in the sequence, each converter performs tuning of its power tracking function and then provides a communication signal to the next converter in the sequence. Each converter for example functions as a maximum power point tracking system. The system may be made from a set of smaller units so that different systems may be formed from a small set of standard components. By operating the converters in a sequence, conflict between the converters and instability is avoided.Type: ApplicationFiled: May 8, 2018Publication date: February 27, 2020Inventors: Priya Ranjan MISHRA, Goutam MAJI
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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