Abstract: A data determination method for a supplying-end module of an induction type power supply system includes generating a current signal on a resonant coil of the supplying-end module according to a modulated signal of a receiving-end module of the induction type power supply system fed back from a resonant coil of the receiving-end module to the resonant coil of the supplying-end module; amplifying the current signal to retrieve a plurality of peak values of the current signal; setting a reference voltage according to magnitudes of the plurality of peak values; comparing the plurality of peak values with the reference voltage to generate a comparison result; and analyzing the comparison result to obtain modulation data of the receiving-end module of the induction type power supply system.

Abstract: An electronic control unit monitors a state of a monitor target based on an analog signal from a sensor which is supplied with electric power and which outputs the analog signal that changes in accordance with a value of the electric power and the state of the monitor target. The electronic control unit includes a first power supply, a second power supply having higher accuracy than the first power supply, and a controller. The controller supplies the power to the sensor with the first power supply and determines whether there is a change in the state of the monitor target based on the analog signal. When determining that there is the change, the controller switches over a power supply from the first power supply to the second power supply and determines whether there is a change in the state of the monitor target.

Abstract: A power reception apparatus includes a power reception coil, a relative distance detection section, a power transmission efficiency detection section, a database, a power transmission frequency setting section, and a power transmission request section. The power transmission frequency setting section is configured to read from the database a resonance frequency corresponding to a combination of a relative distance and an initial transmission efficiency and to set the read resonance frequency as a power transmitting frequency. The power transmission request section is configured to notify the power transmission apparatus of the power transmission frequency set by the power transmission frequency setting section to request wireless power transmission with the power transmission frequency.

Abstract: A wireless power transfer circuit can include an input port that can be configured to couple to a power source, an ac excitation circuit having a port coupled to the input port, a resonant circuit coupled to the ac excitation circuit, and a controller circuit that can be configured to operate the ac excitation circuit. The wireless power transfer circuit can operate to inductively transfer power from the resonant circuit and the controller circuit can be configured to change an operating frequency of the ac excitation circuit and change a configuration of the resonant circuit responsive a change in indicated efficiency of the wireless power transfer.

Abstract: An apparatus and method for communication using a wireless power are provided. The apparatus includes an amplifier configured to amplify an input signal based on a power supplied to the amplifier. The apparatus further includes a control unit configured to detect a change in an impedance of a target device, and to change the power based on the change in the impedance. The apparatus further includes a demodulation unit configured to receive a message from the target device, and to demodulate the message based on the changed power.

Abstract: An integrated resistive load bank management system (500) uses a load bank (510) to control a flow of electrical energy to an electrically operated system (520). The load bank management system uses a resistive load bank to dissipate power from a generator set (505). The load bank management system can rapidly switch an electrical connection between a load bank and the generator set and the electrically operated system and the generator set. The load bank management system can provide an instantaneous increase in power to the electrically operated system and provide a short recovery time between power pulses provided to the electrically operated system.

Abstract: A bicycle electrical system is provided with a first electric component, a second electric component, a first wireless communication unit, a first power source, and a second wireless communication unit. The first wireless communication unit and the first power source are electrically connected to at least the first electric component. The second wireless communication unit is electrically connected to at least the second electric component. The first electric component can communicate with the first wireless communication unit. The second electric component can communicate with the second wireless communication unit. At least the first wireless communication unit and the second wireless communication unit are attached to the bicycle without interposing the first electric component and the second electric component.

Abstract: Techniques for proximity sensing in a wireless power transmitter in a system, method, and apparatus are described herein. For example, an apparatus may include a transmitter coil configured to generate a magnetic field. The apparatus may also include a controller configured to reduce a strength of the magnetic field based on a proximity detection of an object.

Abstract: A dual-output generator includes a first generator with a rotor, a second generator with a rotor, and first and second power converters. The rotor of the first generator is coupled to the rotor of the second generator for common rotation with the rotor of the first generator. The first power converter connects electrically to the first generator for converting rotation of the first generator rotor into direct current power. The second power converter connects electrically to the second generator for converting rotation of the second generator rotor into constant frequency alternating current power.

Abstract: A power determining apparatus is disclosed. The power determining apparatus includes a sensor for sensing a current or voltage supplied from a commercial power source or an uninterruptible power supply (UPS), and a controller for analyzing a current or voltage signal sent from the sensor, and determining which one of the commercial power source and the UPS supplies power, based on results of the analysis.

Abstract: The present invention provides a technique to control a distribution of electric power depending on electric power consumption of each of a plurality of electric power receiving apparatuses. An electric power supply apparatus includes an acquisition unit configured to acquire information associated with electric power consumption of each of the plurality of electric power receiving apparatuses, a determination unit configured to determine the distribution of electric power to the plurality of electric power receiving apparatuses based on the information acquired by the acquisition unit such that a greater amount of distribution of electric power is assigned to an electric power receiving apparatus having greater electric power consumption, and an electric power supply unit configured to supply electric power to each of the plurality of electric power receiving apparatuses according to the distribution of electric power determined by the determination unit.

Abstract: A system including a device that is configured to communicate current sourcing capabilities to an external power source over a wired connection containing a plurality of wires. The device includes a power supply circuit configured to provide operating power for the device. A first pull-down circuit is configured to provide a pull-down for a particular wire of the wired connection using a first resistive element that is actively trimmed using the operating power. A second pull-down circuit includes at least one transistor that, in the absence of the operating power, is configured to enable a current path, in response to a gate voltage generated from a voltage on the particular wire, between the particular wire and a second resistive element.

Abstract: A device comprises a switch network coupled to a power source, wherein the switch network comprises a plurality of power switches, a transmitter resonant tank coupled to the plurality of power switches, wherein the transmitter resonant tank comprises a primary resonant capacitor, a transmitter coil coupled to the transmitter resonant tank and a harmonic reduction apparatus coupled between the switch network and the transmitter coil, wherein the harmonic reduction apparatus is configured to attenuate at least one undesired frequency component.

Abstract: A wireless power enabled apparatus includes a wireless power receiver. The wireless power receiver includes one or more receive coils configured to generate an AC power signal responsive to a wireless power signal. The wireless power receiver also includes two or more inductors configured with tightly coupled windings that share a common leakage inductance. Switching circuits are included such that each switching circuit is operably coupled to a corresponding one of the inductors. Control logic is configured to operate switches of the switching circuits such that each of the switching circuits and its corresponding two or more inductors are operated to shift between an energy storage mode for one or more phases of a switching period and an energy transfer mode for other phases of the switching period and the phases combine to comprise an entirety of the switching period.

Abstract: A power supply and a method for operating the power supply in which a transformer connected to an excitation circuit which is adapted to be connected to a power source, which secondary winding is connected to at least one first power supply. From prior art. switch mode power supply based on fly back technology is well known. Here a power supply with a power inlet is provided with a plurality of separated power outlets. One of the lines connected to the primary winding is further connected to a discharge control circuit, which discharge control circuit is further connected to at least one second power supply and the primary winding is further connected to a discharge circuit where at least one further power supply is connected.

Abstract: The present invention provides an uninterruptable power supply system and method with a first AC source providing three-phase AC power, a DC source providing DC power, and a power converter receiving AC power from the first AC source and/or DC power from the DC source and delivering two wire DC power to a load via a DC output line. One pole of the DC output line is connected to the neutral reference of the four-wire AC-power supply line. The system may include a bypass device for passing power from its output side to the DC output line with the bypass device and the power converter being connected in parallel to the DC output line. The bypass device may include at least one switching unit, which receives AC power at its input side, and a control unit to supply pulsed power from an AC power supply.

Abstract: To minimize excessively high output or increases in magnetic-flux leakage by controlling power feeding on the power-feeding side if an unforeseen situation occurs. This power-feeding device (100) feeds power to an external power-receiving device (150) in a contactless manner. A power-feeding coil (103) uses electromagnetic power to feed electrical power to a power-receiving coil (154) in the power-receiving device (150). While power is being fed from said power-feeding coil (103), a power-feeding-side control unit (107) determines the amount of displacement of the power-feeding coil (103) and, on the basis of the determined displacement amount, controls the amount of electrical power being fed.

Abstract: A method includes charging a capacitor connected to an input node, gradually decreasing an output voltage at an output node, and electrically connecting the input node to the output node. A circuit that performs the method is also disclosed. A system that includes the circuit is also disclosed.

Abstract: A magnetic field shield having a plurality of tunable resonant loops arranged on a planar support medium. The resonant loops are loaded with a lumped component such as a capacitor or variable capacitor and produce magnetic null points. The location of the magnetic null points may be moved three dimensionally about the planar support medium.

Abstract: An apparatus for wirelessly transferring power is provided. The apparatus comprises a first coupler, a second coupler, and a third coupler overlapping at least the first coupler. The apparatus further comprises a ferrimagnetic structure comprising a first portion disposed under the first coupler, a second portion disposed under the second coupler, and a gap defined between the first coupler and the second coupler, the gap physically separating the first portion from the second portion. One or both of the first portion and the second portion comprises a first plurality of ferrimagnetic strips interleaved with a second plurality of ferrimagnetic strips configured to attenuate a magnetic flux passing between the first and second couplers. The first plurality of ferrimagnetic strips are interleaved with the second plurality of ferrimagnetic strips under at least a portion of the first coupler that is overlapped by the third coupler.