Abstract: An apparatus, a key partner, methods and computer programs for a key module of a vehicle and a vehicle. The apparatus for the key module includes a communication interface for radio communication with a key partner of the vehicle, a motion sensor, and a control module for controlling an operating state from operating states of the key module based on the information about the motion of the key module. The operating states include at least a first operating state, a pre-shutdown operating state and a shutdown state. The control module activates the first operating state if the motion of the key module is above a motion limit value and activates the pre-shutdown operating state if the motion of the key module is below the motion limit value over a period of time.

Abstract: An electronic device is provided which includes a power input unit including a first power input unit and a second power input unit, a switching unit including a first switching circuit connected with the first power input unit and a second switching circuit connected with the second power input unit, and a controller configured to receive selection information for selecting a power source to supply power to a load unit included in the electronic device of a first power source and a second power source, wherein the first power source and the second power source are connected with the first power input unit and the second power input unit, respectively, and control the switching unit to connect the first power source to the load unit according to the selection information.

Abstract: A method for detection of a fault in a sensing cable within a saw detects potential failures in a sensing cable that is part of an object detection system in the saw. The method includes generating a predetermined excitation signal transmitted through a first conductor and a second conductor in the sensing cable, detecting a return signal from the first conductor and the second conductor in the sensing cable in response to the predetermined excitation signal, identifying a signal-to-noise ratio (SNR) of the return signal, and generating an output indicating a fault in the sensing cable in response to the SNR of the return signal being below a predetermined value.

Abstract: The power transmission apparatus includes a power transmitting unit which transmits power to a first power receiving unit in a non-contact manner, a housing which accommodates the power transmitting unit, a second power receiving unit which is disposed on a sidewall of the housing and receives the power from the power transmitting unit in a non-contact manner, and an electric load which operates with power that the second power receiving unit has received. The power transmission apparatus operates only with a leakage magnetic flux and operates of a notification such as a non-contact power supply is in progress.

Abstract: A power transmission apparatus includes a power delivery unit generating a power, a load unit receiving the power, a cable, at least a connector, at least a power switch, and a communication interface. The power delivery unit and the load unit is coupled by the connector and the cable, and the power is delivered through the cable and the connector. A voltage threshold is determined according to a delivery current of the power or a load current of the load unit. When a voltage difference between a delivery voltage of the power and a load voltage of the load unit is larger than the voltage threshold, the power switch is turned OFF, wherein information of one of the delivery voltage, the load voltage, the delivery current, and/or the load current is provided through the communication interface.

Abstract: A wireless power transfer system includes a power transmitter configured to provide a power transfer to a power receiver via a power transfer signal. The power receiver includes a first mode controller configured to transmit a standby mode exit request to the power transmitter by changing a loading of a communication inductor of the power transmitter. The power transmitter includes a mode controller configured to control the power transmitter to operate in a standby mode where a presence of the power receiver is detected but no power transfer signal is generated. A detector is configured to detect an impedance change of the communication inductor. The mode controller is configured to initiate a transition from the standby mode to a power transfer mode in response to the detector detecting the impedance change.

Abstract: A control apparatus controls an optimizer that steps up a DC input voltage from a solar photovoltaic power generation panel to a predetermined DC high voltage and converts the stepped-up DC voltage into a grid connection voltage, and includes a microprocessor; a sensor group; and a MOS driver group. The microprocessor includes: a control logic unit; a maximum power point tracking control unit; a PWM control unit; a PFM control unit; an I/O port; a timer control unit; and an initial measurement unit. The sensor group includes a solar photovoltaic panel voltage detection circuit; a solar photovoltaic panel current detection circuit; an optimizer output voltage detection circuit; and an optimizer output current detection unit. Thus, even when the solar photovoltaic power generation panel is at a low power in a low output state, stable operation can be continued, and transistors can be protected from a surge voltage.

Abstract: A method for optimizing consumption of reactive power in an electrical network includes a system for monitoring and adjusting electrical power supply, the system including an electrical generator, electrical loads, a power compensation system, an electric transmission line, an electro-digital processor and a remote-readable meter. The method further includes: measuring the dataset of the electrical loads via at least one remote-readable meter; collecting the dataset of the electrical loads and transmitting it to the electro-digital processor in order to establish data curves; calculating a power factor of the electrical loads; enabling reactive power compensation by setting the type and configuration of the compensation systems to be installed, when the calculated power factor has a value lower than or equal to a predefined threshold value; and compensating for reactive power by actuating the installed compensation systems.

Abstract: A three-phase switching unit including three identical switching cells, each including at least one first electrically-controlled switch in series with at least one second spontaneous conduction switch, wherein the cells are arranged, around a conductive central area of a substrate, with a symmetry of revolution of order 3.

Abstract: A system and method for monitoring energy use in an electronic device. In one embodiment, an energy monitoring system includes a processor and an energy monitor module. The energy monitor module includes instructions that when executed cause the processor to receive values of measured parameters of a pulse signal that controls the switching of energy to an energy storage device in a switch mode power supply that provides power to an electronic device. The instructions also cause the processor to determine, based on the values of measured parameters, attributes of operation of the electronic device powered by the energy source during an interval corresponding to the measured parameters. The instructions further cause the processor to generate, based on the attributes of operation, a control signal that causes the electronic device to change the loading of the power supply by the electronic device.

Abstract: Systems devices and methods are disclosed for a vehicle power distribution system having a flat wire harness with integrated voltage converters. An example power distribution system includes a battery having a nominal voltage, a plurality of electrical loads, each corresponding to a respective rated voltage, and a flat wire harness. The flat wire harness includes a plurality of wire branches, each configured to couple the battery to a respective electrical load. The flat wire harness also includes a plurality of voltage converters, each integrated into a respective wire branch, configured to provide the respective rated voltage to each electrical load.

Abstract: An improved D.C. power supply for an emergency locator transmitter ELT mounted on an aircraft that does not require lithium batteries but instead uses conventional alkaline batteries in conjunction with a supercapacitor network to provide a reliable power source even when the ELT that is airborne is subjected to extreme cold temperatures that can affect the alkaline battery operation. Alkaline battery pack with a 12 V output is connected to a supercapacitor network board. The supercapacitors are charged when the ELT is activated ON using the comparator network.

Abstract: A current fed power supply circuit, a method for producing DC voltages from a current source, and a power delivery system are provided herein. One embodiment of a current fed power supply circuit includes: (1) input terminals, (2) an energy storage device having a first end coupled to the input terminals, (3) power switching circuitry coupled to a second end of the energy storage device and including a transformer having a primary winding and a plurality of secondary windings, and (4) multiple output terminals that are each uniquely coupled to one of the plurality of secondary windings, wherein the power switching circuitry converts a current received at the input terminals to a plurality of regulated voltages at the multiple output terminals.

Abstract: Embodiments include a power device for an electric vehicle. The power device includes a first bus associated with a first voltage, and a second bus associated with a second voltage, different than the first voltage. The power device includes a plurality of switching elements coupled to a first battery, a second battery, the first bus and the second bus. On/off states of the plurality of switching elements control electrical connections to the first bus, the second bus, the first battery and the second battery according to an operation mode.

Abstract: In an embodiment, a power apparatus operating method includes receiving a mode switching signal to control an operating of a power apparatus to provide and/or receive a preconfigured load; sensing an enable route current of an enable route, and a bypass route current of a bypass route, wherein the enable route current flowing through a battery module including one or more batteries, and the bypass route current does not flowing through the battery module; and controlling driving a first and a second switches by using a negative feedback control and an open loop control, to perform a current switching between an enable mode and a bypass mode of the power apparatus, based on the mode switching signal, the enable route current and the bypass route current, wherein the enable mode uses the power apparatus and the bypass mode bypasses the power apparatus.

Abstract: A signal modulation method for a receiving-end module of an induction type power supply system includes configuring a plurality of modulation periods corresponding to a modulation signal; performing modulation on a first terminal of an induction coil of the receiving-end module during the ith modulation period among the plurality of modulation periods, wherein i is an odd number; and performing modulation on a second terminal of the induction coil of the receiving-end module during the jth modulation period among the plurality of modulation periods, wherein j is an even number; wherein the second terminal does not undergo modulation when the first terminal is being modulated, and the first terminal does not undergo modulation when the second terminal is being modulated.

Abstract: There are provided an electric power feed apparatus, an electric power feed system, and an electronic apparatus which are capable of performing transmission efficiency control corresponding to positions of apparatuses when electric power transmission is performed between the apparatuses through a magnetic field. The electric power feed apparatus includes an electric power transmission section including an electric power transmission coil for performing electric power transmission through a magnetic field and an auxiliary resonance section including one or a plurality of resonators. A main resonant frequency in a main resonance operation with use of the electric power transmission coil during the electric power transmission and an auxiliary resonant frequency in the resonator are different from each other.

Abstract: The various embodiments described herein include methods, devices, and systems for reducing mutual coupling between antennas. In one aspect, a wireless charging system includes: (1) two antennas configured to direct electromagnetic waves toward a wireless power receiver such that the electromagnetic waves interfere constructively at the receiver; and (2) a housing structure configured to receive the antennas, including: (a) a metallic base, (b) a first set of isolating components extending upwardly and defining a first region configured to receive a first antenna, and (c) a second set of isolating components extending upwardly and defining a second region configured to receive a second antenna, the second set including at least some isolating components distinct from those in the first set. The first and second sets of isolating components configured to: (i) create a physical gap between the antennas, and (ii) reduce a mutual coupling between the antennas.

Abstract: The present invention is directed to an electrical wiring device that includes a housing assembly having a plurality of terminals at least partially disposed therein, the plurality of terminals being configured to be coupled to an AC power source and at least one electrical load, the plurality of terminals being configured to provide the electrical wiring device with regulated AC power in a device energized state. At least one variable control mechanism is coupled to the housing assembly, the at least one variable control mechanism being configured to regulate power to the at least one electrical load by way of a control knob being user settable between a first adjustment stop and a second adjustment stop. A user accessible calibration button is included. At least one series pass element coupled to the at least one variable control mechanism, the at least one series pass element being configured to provide load power to the at least one electrical load in accordance with a user setting of the control knob.

Abstract: There is provided a power supply system that is mounted on a vehicle and that comprises an accumulator connected with a power line via a system main relay including a precharge circuit; a smoothing capacitor mounted to the power line; and a power converter configured to use a DC power from the power line and supply an AC power to an electric load. When a precharge control that uses the precharge circuit to pre-charge the capacitor at a system start time fails in pre-charging the capacitor, the power supply system diagnoses a place of a failure, based on a change in common voltage of the accumulator during the precharge control.