Abstract: A method for operating an onboard power supply system of a motor vehicle, wherein the onboard power supply system includes at least two electric networks with different supply voltages. A network component, in particular an electrical load, is connected to each network, and a high-voltage battery is connected to the high-voltage network. A specified amount of power is supplied from the high-voltage network to a low-voltage network, wherein the supply voltage of the low-voltage network is lower than the supply voltage of the high-voltage network. Power of at least one network component connected in the low-voltage network is reduced when a power shortfall occurs in the high-voltage network while the high-voltage battery is being charged. The amount of power supplied by the high-voltage network to the network component in the low-voltage network is also reduced.

Abstract: A power transmission device that adjusts the resonance frequency of a plurality of power transmitters with high precision, is provided. The power transmission device includes a first power transmitter and a second power transmitter that respectively adjust the capacitance such that a resonance frequency is attained, based on a variation degree of a phase difference with respect to a variation of the capacitance when the capacitance of a variable capacitance unit is varied, and the first control unit adjusts the resonance frequency of the first power transmitter in a state where the second power transmitter is off, and the second control unit adjusts the resonance frequency of the second power transmitter in a state where the first power transmitter is off.

Abstract: In accordance with various aspects of the disclosure, a method and apparatus is disclosed that includes features of transmitting power from a transmitter of a wireless power system at a multiplicity of frequencies between a first transmission frequency and a second transmission frequency at a first power level and transmitting power from the transmitter at a second power level and at one or more frequencies between the first transmission frequency and the second transmission frequency if the one or more receiving devices are determined to be coupled to the transmitter.

Abstract: There is provided a multi-output power supply capable of maintaining power balancing between multiple output powers by fixing a switching duty until a voltage level reaches a predetermined voltage level during an initial stage of a soft-start operation, the multi-output power supply including a power supply unit switching an input power and outputting a plurality of powers having levels determined according to the switching, and a controller controlling a soft switching operation of the power supply unit during an initial operation and fixing a switching duty of the power supply unit to a preset switching duty according to a result of a comparison between a preset reference voltage level and an operating voltage determining whether the soft switching operation is performed or not during the soft switching operation.

Abstract: A combined power and input/output system for an electronic device includes a host system; a target system operably coupled to the host system via a combined power and I/O line; and a power boost circuit in the target system for enabling a higher voltage target device.

Abstract: A server includes a power module, a detection circuit, a switching circuit, at least one first electric component and at least one second electric component. The power module supplies a standby voltage under a standby mode and supplies a working voltage under a working mode. The detection circuit receives a working mode signal of the server to output a control signal. The working mode signal specifies that the server is under the standby mode or the working mode. The switching circuit is supplied with the working voltage, the standby voltage and a converted control signal generated by converting the control signal, to transfer either the working voltage or the standby voltage. The first electric component works under the working mode only. The second electric component works under the standby mode and the working mode.

Abstract: A power converter includes positive and negative input lines and an input capacitor coupled across the input lines. The power converter also includes a switch coupled across the input lines that includes a control contact and an additional contact. The power converter also includes switch controller coupled to the control contact and that includes positive and negative input connections. The power converter also includes a contactor diagnostic supply interface coupled between the positive input connection and the additional contact.

Abstract: The present invention is directed to an intelligent dimmer that is capable of “learning” the type of load it is controlling, and adjusts its operating parameters accordingly. The present invention can adaptively drive electrical loads over a wide range of wattages. The intelligent dimmer of the present invention is configured to automatically calibrate itself based on the load current demands of a particular electrical load. The intelligent dimmer of the present invention also adaptively limits in-rush currents to extend the life expectancy of the solid state switching components used therein.

Abstract: Provided is a received power conversion device for a resonant wireless charging system, including a wireless power receiver for receiving wireless power from a wireless power transmission device, a rectifier for rectifying power in an Alternating Current (AC) form received in the wireless power receiver into a Direct Current (DC), a free-wheeling switching unit for switching according to a switching control signal to form a path for free-wheeling the power in the AC form, a feedback circuit fed back with an output signal of a corresponding power conversion device to detect a level of the output signal, and a controller for controlling switching of the free-wheeling switching unit according to the output level detected by the feedback circuit.

Abstract: A system and method for providing power is disclosed. A variable direct current (DC) power source provides a variable DC voltage. A configurator dynamically converts the variable DC voltage to a selected DC voltage to provide the power. A set of switches combines the solar voltage with a substantially constant DC voltage. A control unit controls the set of switches and the configurator to provide the combined voltages at a selected voltage level.

Abstract: A capacitance bank system includes a plurality of voltage controlled capacitance cells and an output node. The plurality of capacitance cells have an anti-parallel configuration. The plurality of capacitance cells are configured to selectively provide cell capacitances. The output node is coupled to the plurality of capacitance cells. The output node is configured to provide an input capacitance step smaller than a minimum physical capacitor supported by a particular technology.

Abstract: Method for detecting an electric are in a photovoltaic device by ultrasound, comprising measuring at least one parameter among the amplitude, the duration and the central frequency, of an electrical signal received by an ultrasound sensor; and comparing the measurement of this at least one parameter of the electrical signal with predefined values in order to determine whether the measurement corresponds to that of an electric arc.

Abstract: A power supply system for EV and a control method thereof are provided, the system including a high voltage battery generating a driving voltage to a motor of the EV, a low voltage battery generating a driving voltage for other electronic equipment, an LDC (low voltage DC-DC Converter) converting a high voltage generated by the high voltage battery to a low voltage, and generating a control power for charging the low voltage battery, an alternator generating a control power for charging the low voltage battery using a rotary power of the motor, and a control power selector selectively supplying the control power generated by the LDC or the alternator to the low voltage battery.

Abstract: A power transmitting apparatus which has a power transmitting antenna, and transfers power from the power transmitting antenna to a power receiving antenna. The power transmitting apparatus includes a storage unit configured to be associated with a position of the power receiving antenna, and to store a parameter for controlling a resonance frequency of the power transmitting antenna; a determination unit configured to determine the position of the power receiving antenna; and a control unit configured to control the resonance frequency of the power transmitting antenna based on the position of the power receiving antenna.

Abstract: A power control device can generate control signals to control operation of power sources. At least one of the control signals may be referenced to an internally provided reference voltage or an externally provided reference voltage. Additional control signals control operation of load switches that can be connected to the power sources to provide secondary sources of power. The load switches can be turned in a gradual manner at rates that depend on the power sources to which they are connected. The outputs of the load switches can be monitored for overvoltage and undervoltage conditions relative to the power sources to which they are connected.

Abstract: A power supply circuit, an antenna control system, and a digital communication device are provided. The power supply circuit is adapted to supply electronic power to an antenna and includes a power management circuit and a pin. The power management circuit is coupled between a power input terminal and a power output terminal. In a first mode, the pin receives a mode control signal to control the power management circuit to deliver or not deliver electronic power of a power source from the power input terminal to the power output terminal. In a second mode, the pin stops receiving the mode control signal and provides a detection signal, which indicates whether the power supply circuit is overloaded. Thereby, power switching of the antenna and an overload detection/notification function are accomplished by using the single pin.

Abstract: A system for supplying energy is provided. The system comprises a shelter for users of an outdoor recreational area. The shelter has a roof portion and photovoltaic cells disposed on the roof portion, the photovoltaic cells being arranged to convert solar energy into electrical energy. The system also comprises an energy distribution system arranged to receive converted electrical energy from the photovoltaic cells, and to receive grid electrical energy from a power distribution network. The energy distribution system is arranged to provide converted electrical energy to an electrically powered component of the system at times when there is sufficient converted electrical energy to power the component, and to provide grid electrical energy to the component at times when there is insufficient converted electrical energy to power the component.

Abstract: A resonant power supply is provided. The resonant power supply comprises a series resonant converter configured to convert an input DC voltage to an output DC voltage to generate an output DC voltage. The series resonant converter includes a switching stage, a resonant inductor, a resonant capacitor, and an isolation transformer. The resonant power supply further comprises a converter controller configured to obtain an actual trajectory radius signal based on a resonant inductor current, a resonant capacitor voltage, and a voltage in association with the isolation transformer. The converter controller is further configured to generate a trajectory radius command signal based on a DC voltage command signal and a DC voltage feedback signal, and to generate control signals to be applied to the switching stage based on the actual trajectory radius signal and the trajectory radius command signal.

Abstract: A wireless power receiver for receiving power from a wireless power transmitter using resonance according to the embodiment includes a reception resonant coil resonance-coupled with a transmission resonant coil of the wireless power transmitter for receiving the power, a reception induction coil coupled with the reception resonant coil for receiving the power, and a connecting unit, and the reception resonant coil includes at least one conductive line having one end and an opposite end being open with each other, and the connecting unit couples the one end and the opposite end of each conductive line with each other so that the reception resonant coil forms a closed loop.

Abstract: An interconnect device is disclosed for detecting whether an vehicle on-board diagnostics (OBD) data port includes a blocking diode or equivalent. that prevents back feeding of power through the OBD data port. If a diode is detected, the interconnect device alerts the user that the power cannot be back fed through the OBD II port connector. In such a condition, an alternate means is used to preserve the data mentioned above. Specifically, an alternative power supply can be connected directly to the battery cables that will be disconnected from the battery, for example, by way of battery clamps. In this way the alternative power supply is used to preserve the data until a new battery is reconnected to the vehicle battery cables. If a diode is not detected by the interconnect device, the interconnect device displays this fact to the user. The interconnect device includes circuitry for detecting and displaying whether a diode is connected in series with a power pin of the OBD II port connector.