Abstract: Provided is a wireless power transmission device. A wireless power transmission device includes: at least one antenna for wireless power transmission disposed on one side of a magnetic shielding sheet; a support plate having at least one receiving groove formed therein for receiving the antenna for wireless power transmission; and an antenna for wireless communication disposed along a side portion of the support plate.

Abstract: An electrical distribution device includes at least one power controller that is connectable to at least one electrical body, at least one local controller used to interface at least one power controller with at least one external calculator, and at least one local power supply path for powering at least one power controller and each local controller. Each power controller and each local controller includes a local DC/DC-type converter for coupling to each local power supply path. The device also includes an energy reservoir coupled to each local power supply path and to the local converters of the power controllers and the local controller.

Abstract: A controller for individual sites of the microgrid controls loads, sources, the importing of power, and the exporting of power as a function of the energy storage at the site. A microgrid of such sites provides the benefits of improved energy storage without the need for real-time communication between sites.

Abstract: A relay including a relay coil and a relay switch. The relay coil including a coil beginning and a coil end and being connected to a relay driving circuit. The relay switch being arranged in a load circuit. A first parasitic capacitance between the coil beginning and the relay switch is different than a second parasitic capacitance between the coil end and the relay switch.

Abstract: A secondary on-board network battery for a secondary on-board network that is redundant to a primary on-board network of a motor vehicle, includes: a battery cell composite for providing electrical energy; a first connection for electrically connecting the secondary on-board network battery to at least one secondary on-board network component; a second connection for electrically connecting the secondary on-board network battery to the primary on-board network; a first switching device between the first connection and a connection point that is electrically connected to the battery cell composite; a second switching device between the second connection and the connection point, and a control unit configured to provide a conducting state for both switching devices for supplying the at least one secondary on-board network component from the primary on-board network, and for providing a locking state for the second switching device for keeping an overload on the primary on-board network side away.

Abstract: A power transmitter for wireless power transfer includes a control and communications unit configured to provide power control signals to control a power level of a power signal configured for transmission to a power receiver and including a pulse width modulation (PWM) signal generator for determining and selecting the operating frequency from the operating frequency range. The power transmitter further includes an inverter circuit configured to receive a direct current (DC) power and convert the input power to a power signal, coil configured to transmit the power signal to a power receiver, the coil formed of wound Litz wire and including at least one layer, the coil defining, at least, a top face, and a shielding comprising a ferrite core and defining a cavity, the cavity configured such that the ferrite core substantially surrounds all but the top face of the coil.

Abstract: An electronic device can include a battery bus, a load having a transient power requirement, and a transient power management circuit coupled between the battery bus and the load and configured to meet the transient instantaneous power requirement of the load while maintaining a minimum voltage on the battery bus. The transient power management circuit can include a boost converter coupled between the battery bus and a capacitor bank, and the load may be coupled to the capacitor bank. A control circuit may be configured to operate the boost converter to charge the capacitor bank. A control switch may be coupled between the boost converter and the capacitor bank, and the control circuit may be further configured to limit inrush current into the capacitor bank. Additionally, a state of charge of the battery may be estimated from a time required to charge the capacitor bank.

Abstract: A photovoltaic power plant system for power generation, comprising one or more photovoltaic clusters and one or more modular multilevel converters. Each photovoltaic cluster includes a number of photovoltaic strings connected to one or more MPPT DC/DC, converters connected to a common LVDC, bus. Each photovoltaic cluster includes a DC/DC converter including an input connected to the LVDC bus, and an output connected to a MVDC collection grid. Each of the one or more modular multilevel converters includes an input connected to the one or more photovoltaic clusters via the MVDC collection grid and an output connected to a transmission grid.

Abstract: The present invention relates to an apparatus and a method for performing communication in a wireless power transmission system. The present specification discloses a wireless power transmission apparatus comprising: a communication/control unit configured to perform negotiation on a first available power index with a wireless power reception apparatus; and a power conversion unit configured to create magnetic coupling of a primary coil according to the first available power index, and transmit power wirelessly to the wireless power reception apparatus. The wireless power transmission apparatus can properly adjust an available power index in a dynamic manner at a time point desired by itself according to a surrounding environment/situation, and leadingly initiate communication and authentication.

Abstract: A power supply system P is provided with a fuel cell 1 and a battery unit 2 connected to the fuel cell 1. The battery unit 2 is provided with a first battery 21 connected to the fuel cell 1 so as to supply power to an auxiliary machine 12 of the fuel cell 1 and to be able to be charged with generated power of the fuel cell 1, a second battery 22 connected to the auxiliary machine 12 of the fuel cell 1 through a path p4 different from that of the first battery 21 so as to be able to supply power, and switchers R1, R2 configured to switch the power supply source to the auxiliary machine 12 of the fuel cell 1 between the first battery 21 and the second battery 22.

Abstract: A power conversion system includes an uninterruptible power apparatus, a generator module, and a control unit. The uninterruptible power apparatus includes a conversion module and a DC-to-AC conversion unit. The control unit controls the conversion module and the generator module according a power command so that a first average power provided from a DC power source coupled to the conversion module is slowly increased or decreased, and the control unit controls the conversion module according to a bus voltage so that a second average power provided from a mains is slowly decreased or increased corresponding to the first average power.

Abstract: According to a first aspect of the present disclosed subject matter, a system for wirelessly charging a device, having a built-in coil, via a medium comprising: at least one relay adapted to inductively transfer power for charging the device; and a transmitter configured to inductively transmit to the at least one relay the power for charging the device, wherein the transmitter and the relay are separated by the medium and wherein the relay and the transmitter substantially face each other; wherein the transmitter further comprises a transmitter coil and a transmitter capacitor constituting a transmitter resonance circuit, wherein the relay further comprises a relay coil and a relay capacitor constituting a relay resonance circuit, and wherein a joint resonance frequencies (JRF) of both resonance circuits have a main resonance frequency (MRF); and wherein the transmitter operates at an operational frequency (OPF) selected from a range of OPFs, wherein the range of OPFs is substantially different than the MRF.

Abstract: A wireless power transfer system for wirelessly powering a conveyance apparatus of a first conveyance system and a conveyance apparatus of a second conveyance system including: a wireless electrical power transmitter located along a support or a side of the first conveyance system and a support or a side of the second conveyance system; a wireless electrical power receiver of the first conveyance system located along a surface of the conveyance apparatus of the first conveyance system opposite the support or the side of the first conveyance system; a wireless electrical power receiver of the second conveyance system located along a surface of the conveyance apparatus of the second conveyance system opposite the support or the side of the second conveyance system, wherein the wireless electrical power transmitter is configured to wirelessly transmit electric power to the wireless electrical power receiver of the first and second conveyance system.

Abstract: Various examples are provided related to wireless charging of electric vehicles. In one example, a wireless charging system includes a transmitter pad including a primary coil supplied by a power source, and alignment control circuitry configured to determine an alignment condition of the transmitter pad with respect to a receiver pad of an electric vehicle. In another example, a wireless charging system includes a receiver pad including a secondary coil; and alignment processing circuitry configured to determine an alignment condition of the receiver pad with respect to a transmitter pad comprising a primary coil supplied by a power source. In another example, a method includes measuring output voltages of a plurality of auxiliary coils mounted on a secondary coil located over a primary coil of the wireless charging system and determining a lateral misalignment between the primary and secondary coils using the output voltages.

Abstract: A self charging mug that is capable of charging or discharging an energy storage system thereof to charge a phone and heat or cool a liquid therein. The self charging mug includes an outer shell and an inner shell nested within the outer shell. The self charging mug also includes a thermal interface member in contact with the inner shell and a thermal electric plate engaged with the thermal interface member. The self charging mug further includes a component fixture assembly and an energy storage system arranged within the component fixture assembly. The self charging mug also includes a bidirectional power supply and a seal connector secured to the bidirectional power supply. The self charging mug also includes a battery management system in contact with the component fixture assembly and a charge and discharge controller arranged on a surface of the battery management system in order to control the charging and discharging of the battery according to the present invention.

Abstract: A system includes a digital phase-locked loop (DPLL) having a loop filter and a digitally-controlled oscillator (DCO). The system also includes a clock generator coupled to an output of the DPLL, and a plurality of clock domains coupled to the clock generator. The DPLL is configured to transition between a low power mode and a normal mode, wherein the loop filter is configured to maintain its value when the DPLL transitions from the normal mode to the low power mode. The DCO is configured to output a DCO clock signal based on the maintained loop filter value when the DPLL transitions from the low power mode to the normal mode.

Abstract: A solenoid generator (11) comprises: —a first electrical winding (23) wound along a longitudinal axis (X11) of the generator; —a second electrical winding (24) wound along the aforesaid longitudinal axis (X11) of the generator around the first winding (23) so as to form, with respect to the first winding (23) a tubular chamber; and —an annular magnet (22) fitted around the first winding (23) and capable of relative movement with respect to the first winding (23) and to the second winding (24) in the aforesaid tubular chamber along the longitudinal axis (X11) of the generator. Preferential application is in power-supply systems for mobile/portable devices, such as mobile communication devices.

Abstract: A power supply system disclosed herein may include: a first voltage sensor measuring voltage of a main power source; a power converter connected to a main power source through a relay; a voltage converter; and a controller. The power converter includes a capacitor connected to the main power source and a second voltage sensor measuring voltage of the capacitor. The controller precharges the capacitor with the voltage converter before closing the relay. The controller may be configured to: set target voltage by a measurement value of the first voltage sensor; acquire the measurement value of the first voltage sensor again as verification voltage when a difference between the target voltage and control voltage which is a measurement value measured by the third voltage sensor has fallen within a predetermined tolerance; and close the relay if a difference between the control voltage and the verification voltage is within the tolerance.

Abstract: A wireless power supply device includes a first housing, a transmitting coil assembly mounted in the first housing, a second housing, and a receiving coil assembly mounted in the second housing and electromagnetically coupled with the transmitting coil assembly. The first housing has a U-shaped outer contour and includes a first portion, a second portion, and a third portion. The second portion and the third portion extend perpendicularly to the first portion from opposite ends of the first portion. The second portion and the third portion form a recess between the second portion and the third portion. The second housing extends into the recess.

Abstract: A primary unit for an inductive charging system includes a primary coil, which is configured to generate a magnetic field in response to a coil current through the primary coil; a first inverter, which is coupled to the primary coil via a first capacitor and which is configured to charge and/or discharge the first capacitor based on a first input voltage; and a second inverter, which is coupled to the primary coil via a second capacitor and which is configured to charge and/or discharge the second capacitor based on a second input voltage. The primary unit has a control unit, which is configured to identify capacitance information with respect to an effective capacitance of a primary resonant circuit of the primary unit, and to actuate the first inverter and the second inverter depending on the capacitance information in order to effect the coil current through the primary coil.