Abstract: A power system and method for powering an imaging system. The power system and method include a power distribution unit (PDU) coupled to an imaging system gantry. An input of the PDU is electrically coupled to an alternating current (AC) power source from a utility power supply. An output of the PDU is electrically coupled to the imaging system gantry. The power system and method further include an energy storage system providing peak power to an X-ray generator of the imaging system during X-ray generation.

Abstract: A power system and method for powering an imaging system. The power system and method include a power distribution unit (PDU) coupled to an imaging system gantry. An input of the PDU is electrically coupled to an alternating current (AC) power source from a utility power supply. An output of the PDU is electrically coupled to the imaging system gantry. The power system and method further include an energy storage system providing peak power to an X-ray generator of the imaging system during X-ray generation.

Abstract: Methods and systems are provided for an imaging system including a gantry with a rotatable section including an integrated power source. The integrated power source is configured to provide power to an x-ray tube and other components coupled to the rotatable section and is configured to rotate with the rotatable section. The integrated power source is configured to provide a counter-weight to other components coupled to the rotatable section to increase a rotational balance of the gantry.

Abstract: 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.

Abstract: A power system and method for powering an imaging system. The power system and method include a power distribution unit (PDU) coupled to an imaging system gantry. An input of the PDU is electrically coupled to an alternating current (AC) power source from a utility power supply. An output of the PDU is electrically coupled to the imaging system gantry. The power system and method further include an energy storage system providing peak power to an X-ray generator of the imaging system during X-ray generation.

Abstract: 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.

Abstract: An electrical luminaire receives an AC supply as well as an auxiliary power supply. A power converter converts the AC power to supply a lighting element. A power factor associated with the AC supply is used as a control input for selecting an amount of power to be supplied from the two supplies. This enables the overall power factor to be controlled, for example to avoid financial penalties associated with the use of the AC supply with low power factor.

Abstract: 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.

Abstract: The invention relates to a lighting device (200), which comprises a power input (202) unit for reception of primary operating power from an external primary power supply, a lighting control unit (204) configured to control a lighting function of the lighting device, a secondary power supply unit (206) for storing operating energy and providing secondary operating power in absence of reception of the primary operating power, a wireless-transceiver unit (208), which is configured, in performing a pre-installation connectivity test routine under supply of only the secondary operating power, to generate and transmit, upon detecting reception of a trigger input signal (210), a first wireless test signal (212), to monitor for reception of a second wireless test signal (214) from an external wireless-transceiver unit; and to determine whether or not the received second wireless test signal fulfills predetermined test-signal criteria and to provide an output signal indicative thereof.

Abstract: A ceiling element including a base adapted to be mounted in a ceiling of a room, thereby defining a room space under the base and a ceiling space above the base, is provided. The ceiling element includes a battery container adapted to receive a battery and arranged at the base such that it is located in the ceiling space when the ceiling element is mounted in the ceiling. The ceiling element further includes a conduit arranged to convey air between the room space and the ceiling space and/or the battery space when a temperature of the room space is different from a temperature of the ceiling space and/or a temperature of the battery container. A method of thermal management of a battery received in a battery container located in a ceiling space is also provided.

Abstract: 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.

Abstract: The invention relates to a lighting device (200), which comprises a power input (202) unit for reception of primary operating power from an external primary power supply, a lighting control unit (204) configured to control a lighting function of the lighting device, a secondary power supply unit (206) for storing operating energy and providing secondary operating power in absence of reception of the primary operating power, a wireless-transceiver unit (208), which is configured, in performing a pre-installation connectivity test routine under supply of only the secondary operating power, to generate and transmit, upon detecting reception of a trigger input signal (210), a first wireless test signal (212), to monitor for reception of a second wireless test signal (214) from an external wireless-transceiver unit; and to determine whether or not the received second wireless test signal fulfills predetermined test-signal criteria and to provide an output signal indicative thereof.

Abstract: 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 auxiliary

Abstract: 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.

Abstract: The present invention relates to a functional device (10A) with improved power conversion efficiency. The functional device (10A) comprises a functional unit (12), two or more energy storage units (14A, 14B, 14C, 14D), and an electric power converter unit (16). The electric power converter unit (16) is configured to receive an input voltage from an external power source (20) and to provide converted input voltage to a charging set (28A) of the energy storage units (14C, 14D) which are connected in series with each other having a charging set voltage adapted to the input voltage received from the external power source (20). A discharging set (32A) of the energy storage units (14A, 14B) is configured to provide an output voltage adapted to a functional unit input voltage required by the functional unit (12) to the functional unit (12). This allows an improved power conversion efficiency.

Abstract: 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.

Abstract: 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 auxiliary

Abstract: A system comprises a battery, a load and a power converter for converting battery power from the battery into load power for application to the load. A system controller enables selection between a continuous discharge mode and a discontinuous discharge mode of the battery. In this way, the battery can be operated in different ways according to the most appropriate battery discharge characteristics.

Abstract: An electrical luminaire receives an AC supply as well as an auxiliary power supply. A power converter converts the AC power to supply a lighting element. A power factor associated with the AC supply is used as a control input for selecting an amount of power to be supplied from the two supplies. This enables the overall power factor to be controlled, for example to avoid financial penalties associated with the use of the AC supply with low power factor.

Abstract: A ceiling element including a base adapted to be mounted in a ceiling of a room, thereby defining a room space under the base and a ceiling space above the base, is provided. The ceiling element includes a battery container adapted to receive a battery and arranged at the base such that it is located in the ceiling space when the ceiling element is mounted in the ceiling. The ceiling element further includes a conduit arranged to convey air between the room space and the ceiling space and/or the battery space when a temperature of the room space is different from a temperature of the ceiling space and/or a temperature of the battery container. A method of thermal management of a battery received in a battery container located in a ceiling space is also provided.