Abstract: An output terminal of a power supply circuit is coupled to a load. A control circuit charges multiple intermediate capacitors using an input voltage in a time-sharing manner. Furthermore, the control circuit selects at least one intermediate capacitor that is not being charged from among the multiple intermediate capacitors, and couples the intermediate capacitor thus selected to an output capacitor.

Abstract: A multi-line supply unit for a vehicle control unit, including at least two supply lines each connected to a vehicle voltage source at the input and brought together at a common node at the output; and a protective device, including, in each of the supply lines, at least one first damping diode looped into the supply lines in the forward direction, between the vehicle voltage source and the node; and an operating method for such a multi-line supply unit. At least one switch element is looped into each of the supply lines, respectively, in parallel with the damping diode, respectively; an evaluation and control unit measuring and evaluating a line voltage at the inputs of the supply lines, respectively, and measuring and evaluating a reverse-polarity-protected supply voltage at the common node, and controlling the switch elements in the supply lines as a function of the evaluation, using corresponding control signals.

Abstract: An automotive power converter includes a pair of series connected switches and an inductor including a core having a leg, a winding wound around the leg, and a terminal center tapping the switches. The leg includes a plurality of alternating frames and solid blocks arranged to define a continuous contact surface for the winding and to define internal cavities within the leg such that each of the frames surrounds one of the internal cavities.

Abstract: Disclosed herein are systems and methods for low power excitation of wireless power transmitters configured to transmit high power. The exemplary systems and methods include disabling a power factor correction circuit of the transmitter, and adjusting one or more variable impedance components of the impedance network to obtain a minimum attainable impedance. The variable impedance components can be configured to operate between the minimum attainable impedance and a maximum attainable impedance. The systems and methods can include adjusting a phase shift angle associated with one or more transistors of the inverter and driving the transmitter such that the transmitter resonator coil generates a magnetic flux density less than or equal to a field safety threshold.

Abstract: Systems and methods for wirelessly transmitting power across a room or space are disclosed herein. One such system is comprised of a power receiving element positioned to receive wireless power transfer, comprised of a power receiving cell and a retroreflector positioned proximate the power receiving cell, and a power transmission element configured to wirelessly transmit power towards the power receiving element. The power transmission element includes an optical power transmitter configured to emit a first laser beam with a first power density towards the receiving cell, a guard beam emitter positioned proximate the optical power transmitter and configured to emit a second laser beam with a second power density towards the retroreflectors, a light detector positioned proximate the guard beam emitter and configured to detect light reflected by the retroreflectors, and an interlock system configured to interrupt power transmission when a decrease in light incident from the retroreflectors is detected.

Abstract: A wireless charging system includes a wireless power receiver, at least one receiver-side magnetic coupling member, a wireless power transmitter and at least one transmitter-side magnetic coupling member. The receiver-side magnetic coupling member is disposed on the wireless power receiver. The transmitter-side magnetic coupling member is disposed on the wireless power transmitter and is configured to attract the receiver-side magnetic coupling member. At least one of the wireless power receiver and the wireless power transmitter is movable.

Abstract: A control device of a power supply system is configured to control inputting of electric power from a power system connected to a power distribution device to a plurality of strings connected to the power distribution device and outputting of electric power from the plurality of strings to the power system and to execute a process of stopping control for switching the at least one switching element between connection and disconnection on a string in which inputting of electric power and outputting of electric power are stopped out of the plurality of strings.

Abstract: A vehicle includes a battery, an electric power acquirer, a power supply unit, first and second relays, a controller, a vehicle controller, and a first determination unit. The first determination unit makes a determination, at a system start-up, as to whether or not a power receiving coil of the electric power acquirer is in position to be available for electric power reception from a power transmitting coil of ground facilities. The controller changes, at the system start-up, a switching procedure of the first relay and the second relay on the basis of a result of the determination of the first determination unit.

Abstract: A method of controlling energy supply in an energy distribution network comprising a first energy generation facility located at a first site and a second energy generation facility located at a second site is disclosed, where the first and second energy generation facilities are adapted to supply energy to the energy distribution network.

Abstract: A voltage controlled oscillator (VCO) circuit generates an output signal having a frequency which is dependent on a control voltage. A current is generated which is itself dependent on an amplitude of the VCO circuit. The generated current accordingly tracks, to an extent, the temperature behavior of the oscillator within the VCO circuit. The oscillator is driven by the sum of the generated current and a control current dependent on the control voltage. The control voltage may, for example, be generated by a phase lock loop (PLL).

Abstract: A storage battery (21) is configured of a plurality of cells (22A) to (22N) series-connected to each other. A battery controller (27) receives power supplied from a lead battery (31). The battery controller (27) executes balancing control that reduces variation in cell voltages (VcA) to (VcN) of the plurality of cells (22A) to (22N). The battery controller (27) executes the balancing control in a time range during which a voltage of the lead battery (31) becomes equal to or more than a predetermined given voltage value (V1) and a charging rate of the storage battery (21) becomes equal to or more than a predetermined given charging rate value (SOC1) after a key switch (16) is switched from an on state to an off state.

Abstract: Techniques are described herein for determining the distance from, to or between radiating objects in a multipath environment. For example, embodiments of the present disclosure describe techniques for determining the distance between an antenna array system (or wireless charger) and a wireless power receiver in a multipath wireless power delivery environment. Calibration techniques are disclosed that account for and/or otherwise quantify the multipath effects of the wireless power delivery environment. In some embodiment, the quantified multipath effects modify the Friis transmission equation, thereby facilitating the distance determination in multipath environments.

Abstract: A wireless charging system is configured to charge one or more receiver devices simultaneously. The wireless charging system includes a plurality of coils for wireless charging the one or more receiver devices. The wireless charging system may use a machine learning algorithm to detect the one or more receiver devices and select which of the multiple coils to activate for charging the multiple coils. Based on measurements made from signal through the coils within the wireless charging system, the machine learning algorithm determines a subset of the coils to activate for charging the detected one or more receiver devices.