Abstract: An electric power supply system for an electric vehicle, including a low-voltage network powering auxiliary devices of the vehicle and a high-voltage network powering a propulsion mechanism of the vehicle. The low-voltage network includes a low-voltage battery storing electric energy and a first converter connected to the high-voltage network powering the low-voltage network, while the high-voltage network includes a high-voltage battery and a switching mechanism isolating the high-voltage battery. The system further includes a first supervisor controlling the switching mechanism and a first monitoring mechanism determining if the charge of the low-voltage battery is below or above a first threshold, the supervisor configured to control the switching mechanism to connect the high-voltage battery if the first monitoring mechanism indicates the battery charge is below the first threshold.

Abstract: An electronic device according to an embodiment of the present invention is configured to wirelessly receive electric power from a wireless electric power transfer device. A power reception unit of the electronic device comprises: a core having a predetermined length and having magnetic flux concentration portions formed at lengthwise side portions thereof; and a coil wound along an outer periphery of the core to form magnetic flux density in the magnetic flux concentration portions, the magnetic flux density having a magnitude equal to or larger than a predetermined value.

Abstract: A circuit and method for digital controlling the slew rate of load voltage are provided. The circuit is comprised of a digital slew-rate control unit that utilizes a feedback signal to generate control signals where the feedback signal indicates the observed rate of voltage change on the load. The circuit is further comprised of a load driver circuit that is operated by the control signals and provides a slew-rate controlled output voltage used to operate a load switch, where the load switch provides power to the load. The circuit is configured to operate the load switch using a slew-rate controlling driver, depending on the state of the load switch transition, and a non-controlling driver.

Abstract: An hand-operated safety switch with time delay (1) comprises a switching device (2) adapted to be anchored to a fixed part of the protection and provided with switching means (5) adapted to be connected to a plant to be controlled, an operating device (3) adapted to be anchored to a movable part of the protection for interacting with the switching means (5) upon the closing of the movable part. The switching device (2) comprises a locking mechanism (9) associated with the switching means (5) and adapted to selectively hold/release the operating device (3) and hand-operable unlocking means (10) operatively coupled with the locking mechanism (9) for unlocking the operating device (3) with a predetermined time delay with respect of the switching of the power supply circuit by the switching means (5). The switching device (2) has sensor means (13) operatively coupled with the switching means (5) for modifying their operative condition in function of an inlet signal.

Abstract: An active high gain filter includes high value resistances in feedback implemented using a negative resistance circuit configuration. The high value resistance is implemented using two or smaller resistances connected in the negative resistance circuit configuration. This implementation permits integration of the filter circuit using less occupied area while still providing an accurate transfer function response.

Abstract: A propulsion system includes an electric drive, a first energy storage system electrically coupled to the electric drive through a DC link, and a second energy storage system electrically coupled to the first energy storage system in a series connection. The first energy storage system comprises a high specific-energy storage device and the second energy storage system comprises a low specific-power storage device. The propulsion system also includes a third energy storage system comprising a high specific-energy storage device electrically coupled to the second energy storage system. A bi-directional boost converter is electrically coupled to the second and third energy storage systems such that a terminal of the third energy storage system is electrically coupled to a low voltage side of the bi-directional boost converter and a terminal of the second energy storage system is coupled to a high voltage side of the bi-directional boost converter.

Abstract: A sampling circuit for sampling an input voltage and generating an output voltage, comprising six switches, a capacitor and a voltage buffer. The first switch has a control terminal and makes the output voltage equal to the input voltage when switching on. The second switch is coupled to a first terminal of the capacitor and a first level. The third switch is coupled to a second terminal of the capacitor and a second level. The fourth switch is coupled to the first terminal of the capacitor and the control terminal. The fifth switch is coupled to the control terminal and the second level. The voltage buffer has large input impedance, and has an input receiving the input voltage, an output providing a voltage equal or close to the input voltage. The sixth switch is coupled to the second terminal of the capacitor and the output of the voltage buffer.

Abstract: A voltage supply and drive system for a fire service vehicle or rescue vehicle or special utility vehicle has at least one drive source and having a plurality of voltage sources which are connected to one another by an electrical power system, and a control device. At least one of the voltage sources is formed by a battery, characterized in that the control device is designed to connect or disconnect one or more voltage sources and/or one or more drive sources taking into account at least one emission value of at least one of the voltage sources and/or at least one of the drive sources. As a result, the voltage and/or drive sources which are integrated into the voltage supply and drive system of the fire service vehicle and rescue vehicle or special utility vehicle can be operated, combined in such a way that an overall minimal emission value can be achieved.

Abstract: A wireless power transmitting device includes a self-oscillator circuit, a detection circuit that detects at least one of an oscillation frequency of the self-oscillator circuit and an output voltage of the self-oscillator circuit, a detection resonator that outputs, to detect a position of the power receiving device, power output by the self-oscillator circuit, and a control circuit that detects a degree to which the power receiving device approaches the detection resonator, based on a result of a detection performed by the detection circuit.

Abstract: A method for switching an operating current in a meshed DC voltage network enables operating currents in a DC voltage network to be switched economically in both directions. At least one converter connected to the DC voltage network is controlled in such a way that a zero current is generated in a switching branch having a mechanical switch and the mechanical switch is actuated in accordance with the generated zero current.

Abstract: Provided is an electronic circuit capable of preventing a switching device from breakage when a short-circuit occurs. When a gate control signal CG1 is inverted from an L level to an H level, a first switching circuit 32 selects a first input terminal a, and connects an output terminal d to the first input terminal a, whereby turning on a MOSFET 21. When a predetermined time Tx elapses after the output terminal d of the first switching circuit 32 is connected to the first input terminal a, a second switching circuit 34 selects a first input terminal e, and connects an output terminal g to the first input terminal e. Furthermore, immediately after the connection, the first switching circuit 32 selects a second input terminal b, and connects the output terminal d to the second input terminal b. Consequently, immediately after the MOSFET 21 is turned on, a gate resistor is switched from a first gate resistor 33 having a small resistance value to a second gate resistor 35 having a large resistance value.

Abstract: A method and arrangement for operating a motor vehicle having a vehicle electrical system having a semiconductor switch, which during the vehicle operation is loaded with load events based on at least one load-influencing factor, and for which a service life load relationship is predefined, for a nominal service life for a nominal load, and with which for at least one point in time within the nominal service life a nominal load proportion corresponding to the at least one point in time is ascertainable, and the method for the at least one point in time including ascertaining an actual load of the semiconductor switch based on establishing past load events at the at least one point in time, the ascertaining of the nominal load proportion corresponding to the at least one point in time with the predefined service life load relationship, and comparing of the actual and nominal load proportion at the at least one point in time and the reducing of the at least one load-influencing factor when the actual load excee

Abstract: A method for power management includes applying a decentralized control to manage a large-scale community-level energy system; obtaining a global optimal solution satisfying constraints between the agents representing the energy system's devices as a state-based potential game with a multi-agent framework; independently optimizing each agent's output power while considering operational constraints and assuring a pure Nash equilibrium (NE), wherein a state space helps coordinating the agents' behavior in energy system to deal with system-wide constraints including supply demand balance, battery charging power constraint and satisfy system-wide and device-level (local) operational constraints; and controlling distributed generations (DGs) and storage devices using the agent's output.

Abstract: The present disclosure relates to latch structures and, more particularly, to high performance multiplexed latches and methods of use. The multiplexed latch includes: a first latch structured to receive a data signal D0 and comprising a plurality of inverters which receive a respective input clock signal; and a second latch signal structured to receive a data signal D1 and comprising a plurality of inverters which receive a respective input clock signal.

Abstract: A control circuit for turning on a power semiconductor switch comprises an input which is configured to receive a signal that characterizes the switch-on behavior of the power semiconductor switch, a variable current source which is configured to supply a current with a variable level to a control input of the power semiconductor switch in order to switch on the power semiconductor switch, wherein the control circuit is configured to control the variable current source in a closed control loop in response to the signal that characterizes the switch-on behavior of the power semiconductor switch.

Abstract: Provided is a semiconductor switching device such that there is a reduction in surge or loss in multiple kinds of semiconductor switching element provided in parallel and of differing turn-on/turn-off operation characteristics. The semiconductor switching device includes a switching circuit unit that includes in parallel multiple kinds of semiconductor switching element having different turn-on/turn-off operation characteristics and turns a main current on and off, a driver circuit that includes a current source terminal and a current sink terminal and outputs drive signals that collectively turn the semiconductor switching elements on and off from the current source terminal and the current sink terminal, and an impedance element that is interposed between the current source terminal and the current sink terminal in the driver circuit and causes timings of operations by which the semiconductor switching elements are turned on and off to differ from each other.

Abstract: A power output circuit includes a charge pump, a voltage regulator, a clock generator and a voltage detector. The charge pump is used for receiving a clock signal having an operating frequency and outputting an output voltage. The voltage regulator, coupled to the charge pump, is used for outputting a control voltage to the charge pump, to control the output voltage. The clock generator, coupled to the charge pump, is used for outputting the clock signal to the charge pump. The voltage detector, coupled to the clock generator and the voltage regulator, is used for detecting the control voltage and controlling the clock generator to adjust the operating frequency of the clock signal according to a magnitude of the control voltage.

Abstract: A Power Over Data Lines (PoDL) system includes Power Sourcing Equipment (PSE) supplying DC power and Ethernet data over a single twisted wire pair to a Powered Device (PD). The PSE supplies the DC current and AC data through a cascaded coupling network including a series of AC-blocking inductor stages having different inductances to substantially filter out the AC component and pass the DC component. The data is supplied to the wires via capacitors. The PD may have a matched decoupling network for providing the separated DC power and data to a PD load.

Abstract: A duty cycle correction circuit includes a charge pump and a controller. The charge pump includes a current source, a first output, and a second output. The charge pump routes current from the current source to the first output during a positive portion of a clock, and routes current from the current source to the second output during a negative portion of the clock. The controller compares charge accumulated from the first output to charge accumulated from the second output over a plurality of clock cycles to determine which of the positive portion of the clock and the negative portion of the clock is longer. The controller also generates a digital value that indicates an amount of adjustment to apply to a duty cycle of the clock based on which of the positive portion of the clock and the negative portion of the clock is longer.

Abstract: A wireless power supplying apparatus includes: a power-transmitting coil that wirelessly supplies electric power to a power-receiving coil provided in a vehicle; a tire detection unit that detects tires of the vehicle; a moving mechanism that moves the position of the power-transmitting coil; and a control device that controls the moving mechanism on the basis of the detection result of the tire detection unit such that the power-receiving coil and the power-transmitting coil face each other.