Abstract: Devices and techniques for controlling voltage regulation are disclosed. A voltage regulation system may include one or more loads disposed on an integrated circuit, a DC-to-DC voltage regulation device at least partially disposed on the integrated circuit, and a second device disposed external to the integrated circuit and comprising circuitry configured to communicate with the controller of the voltage regulation device. The voltage regulation device may include one or more voltage regulation modules and a controller configured to control the one or more voltage regulation modules. The one or more voltage regulation modules may be configured to supply one or more voltage levels, respectively, to the one or more loads. The controller may be configured to disable at least one of the one or more voltage regulation modules based on a determination that the second device is not suitable for use with the voltage regulation device.

Abstract: A power receiver receives a wireless power transfer from a power transfer signal generated by a wireless power transmitter during a power transfer phase. The power transfer signal employing a repeating time frame during the power transfer phase where the frame comprises at least a power transfer time interval and a foreign object detection time interval. The power receiver comprises a synchronizer (311) which synchronizes a local time reference to the repeating time frame and a load controller (309) which disconnects a load (303) during at least part of the foreign object time detection time intervals during at least part of the power transfer phase. The timing of the disconnecting is dependent on the local time reference. A mode controller (313) switches between a first operational mode and a second operational mode for the power transfer time intervals in response to a reliability measure for the synchronization.

Abstract: A wireless transmission system includes a transmitter antenna, a sensor, a demodulation circuit, and a transmitter controller. The sensor is configured to detect electrical information associated with AC wireless signals, the electrical information including, at least, a voltage of the AC wireless signals. The demodulation circuit is configured to receive the electrical information from the at least one sensor, detect a change in the electrical information, determine if the change in the electrical information meets or exceeds one of a rise threshold or a fall threshold, if the change exceeds one of the rise threshold or the fall threshold, generate an alert, and output a plurality of data alerts. The transmitter controller is configured to receive the plurality of data alerts from the demodulation circuit, and decode the plurality of data alerts into the wireless data signals.

Abstract: A wireless receiver system includes a receiver antenna, a sensor, a demodulation circuit, and a receiver controller. The sensor is configured to detect electrical information associated with AC wireless signals, the electrical information including, at least, a voltage of the AC wireless signals. The demodulation circuit is configured to receive the electrical information from the at least one sensor, detect a change in the electrical information, determine if the change in the electrical information meets or exceeds one of a rise threshold or a fall threshold, if the change exceeds one of the rise threshold or the fall threshold, generate an alert, and output a plurality of data alerts. The receiver controller is configured to receive the plurality of data alerts from the demodulation circuit, and decode the plurality of data alerts into the wireless data signals.

Abstract: A protection method in a distributed power system including of DC power sources and multiple power modules which include inputs coupled to the DC power sources. The power modules include outputs coupled in series with one or more other power modules to form a serial string. An inverter is coupled to the serial string. The inverter converts power input from the string and produces output power. When the inverter stops production of the output power, each of the power modules is shut down and thereby the power input to the inverter is ceased.

Abstract: The disclosure relates to a modular safety switching apparatus for controlling a plurality of electrical devices, comprising: a first safety switching module comprising a first switching signal output configured to control a first electrical device; a second safety switching module comprising a second switching signal output configured to control a second electrical device; and a connection element configured to electrically connect the first safety switching module to the second safety switching module; wherein the second safety switching module is downstream in signal transmission to the first safety switching module, and wherein the first safety switching module is configured to be deactivated in response to receiving a first control signal and is further configured to feed a second control signal to the second safety switching module to deactivate the second safety switching module.

Abstract: One example discloses a near-field wireless device, including: a stack of layers distributed along a first axis; a first near-field antenna having a conductive surface and embedded in a first layer within the stack of layers; wherein the conductive surface is configured to carry non-propagating quasi-static near-field electric-induction signals for on-body near-field communications; a second near-field antenna having an inductive loop and embedded in a second layer within the stack of layers; wherein the inductive loop is configured to carry non-propagating quasi-static near-field magnetic-induction signals for off-body near-field communications; wherein the first and second layers are different layers; and wherein the first and second antennas are not in galvanic contact.

Abstract: A module for interconnecting a pair of DC sources or a pair of DC loads into a DC bus includes: a first port for each source or load; a switching cell for each first port, each cell having a pair of terminals and a switching node; a second port operatively connected to the DC bus and having a pair of terminals, one of the pair of terminals of the second port being connected to one of the terminals of one of the cells and the other of the pair of terminals of the second port being connected to one of the terminals of the other of the cells; and a filter inductor connected between the switching nodes of the cells. Systems including the module and methods utilizing the system are also disclosed.

Abstract: A testing system (90) for use in testing of wireless power transfer is disclosed. The testing system has at least one wireless power receiver circuit (34) for receiving inductive power from an external wireless power transmitter (20). The testing system is arranged to detect received inductive power at least two operating frequencies relating two both a wireless power standard and a wireless communication standard. Measurements data originating from inductive power received adopting the wireless communication standard is forwarded to a processing means (42) which based on reference data is arranged to detect whether a communication receiver circuit (15) and arranged to communicate according to the wireless communication standard adopting the second frequency range, when arranged in operative proximity to the external wireless power transmitter device (20), would be negatively affected by the inductive power transmitted from the external wireless power transmitter device (20).

Abstract: Disclosed herein is an inductive power transfer (IPT) compensation circuit and method for reflecting a controlled reactance to a primary conductor at a selected operating frequency, compensating for reactive loads reflected to the primary conductor by one or more other pick-ups inductively coupled with the primary conductor in use. The compensation circuit comprises a first switch means coupled to a resonant circuit and operable to reflect a capacitive reactance to the primary conductor; a second switch means coupled to the resonant circuit and operable to reflect an inductive reactance to the primary conductor; and control means adapted to control operation of the first and second switch means to compensate for inductive and capacitive reactances, respectively, in the primary conductor.

Abstract: An apparatus includes a four-switch power converter having input terminals coupled to a power source and output terminals coupled to a capacitor, wherein the capacitor is connected in series with the power source, and a common node of the capacitor and the power source is connected to one input terminal of the four-switch power converter.

Abstract: A voltage error signal is provided to a PWM controller of a voltage regular and used to produce a PWM signal that drives a power stage of the regulator. When operating in an adapter current limit regulation mode, an adapter current sense voltage, indicative of an adapter current, is compared to an adapter current reference voltage to produce an adapter current error signal. A compensator receives the adapter current error signal and outputs a compensated adapter current error signal. The adapter current sense voltage, or a high pass filtered version thereof, is subtracted from the compensated adapter current error signal to produce the voltage error signal provided to the PWM controller. Alternatively, an input voltage, or a high pass filtered version thereof, is added to the compensated adapter current error signal to produce the voltage error signal.

Abstract: The invention provides a non-contact power supply system which supplies power from a power feeding coil on a ground side to a power receiving coil on a vehicle side, and provides a coil position detecting method of detecting a position of a power receiving coil. An excitation voltage and an excitation frequency for the power feeding coil are changed depending on the position of the power receiving coil relative to the power feeding coil. Then, the position of the power receiving coil is detected based on a received voltage with the power receiving coil when the power feeding coil is excited.

Abstract: A voltage regulation circuit can include: a power stage circuit with a single inductor and a plurality of output circuits; each output circuit having an output control switch configured to control a duration of an on time of the output circuit, and an output switch control circuit configured to control the output control switch in accordance with an output voltage sampling signal, a reference current signal that represents an output current of the output circuit, and a clock signal, in order to maintain an output voltage of the output circuit as constant and to decrease interference from load variations of any other of the plurality of output circuits; and where the output control switches are controlled to be on in sequence in each switching period.

Abstract: A power transmission device 2 for a non-contact power supply device 1 has a transmission coil 14 and a power supply circuit 10 that supplies, to the transmission coil 14, AC power having a switching frequency at which the transmission coil 14 does not resonate. In addition, a power reception device 3 for the non-contact power supply device 1 has: a resonance circuit 20 that has a reception coil 21 and a resonance capacitor 22 resonating in parallel and a first coil 23 connected in series or parallel to the reception coil 21; and a coil 23 connected in series to the reception coil 21.

Abstract: An automatic transfer switch (ATS) utilizing molded case circuit breakers (MCCB) or molded case switches (MCS) to connect and disconnect an electrical load to a Normal power source and a Standby power source. The ATS comprising two MCCB or MCS mounted back-to-back one connected to a Normal power source and the other to a Standby power source. Bus bars electrically connect the poles on the load side of the MCCB or MCS connecting the ATS to a load. A rotating cam drive mechanism drives Toggle Levers with attached stored energy opening springs toggles to open and close the MCCB or MCS through the leverage of fulcrum points. A ratchet mounted on the output shaft of a unidirectional gear motor rotates the cam drive mechanism. An interlock bar prevents both MCCB from closing at the same time.

Abstract: An electrical system may include a power circuit configured to provide a power output, first and second batteries, and first and second switches configured to connect and disconnect the first and second batteries, respectively, to the power output in parallel with one another. The electrical system may also include a controller electrically connected to the first and the second switches, and configured to control operation of the first switch and/or the second switch. The electrical system may also include a load predictor in communication with the controller and configured to predict power demands of an electric load on the power circuit and send a signal indicative of the predicted power demands to the controller, which may activate the first switch and/or the second switch to connect the first battery and/or the second battery to the power output based at least in part on the signal indicative of the predicted load.

Abstract: An isolated, power factor corrected, converter, for operation from a three-phase AC source, comprises three power processors, each power processor connected to one of the three phases. Each power processor comprises a cascade of a first and a second power conversion stage. At least one of the first and second power converters in each power processor is configured to provide galvanic isolation through a DC Transformer between the power processor input and output. At least one of the first and second power converters in each power processor is configured to provide power factor correction at the AC source. Substantially all of the bulk energy storage and low frequency filtering is provided by storage elements at the output of the power system. Low voltage semiconductor devices may be cascaded to implement low output capacitance high voltage switches in a multi-cell resonant converter for high voltage applications.

Abstract: A traction voltage system in a vehicle includes a junction box with multiple connectors for electrical components, which components include electrical supplies and electrical loads, and an electronic control unit arranged to monitor current flowing flow to or from the components. A controller or a circuit breaker is arranged to control the supply of power to each respective component, and at least all but one of the connectors are provided with a current sensor arranged to transmit a signal representing detected current values to the electronic control unit. The electronic control unit is arranged to determine an instantaneous current value flowing to or from each component, to compare the instantaneous current value with a predetermined limit value for each connector, and to take action in response to the comparison. A method for controlling the traction voltage system is also provided.

Abstract: Systems and methods are described for operating a wireless power transmission system. The wireless power transmission system receives an encoded beacon signal delivered from and initiated by a wireless power receiver client configured to receive wireless power from the wireless power transmission system. The wireless power transmission system also delivers wireless power to the wireless power receiver client and simultaneously detects for additional encoded beacon signals delivered from and initiated by additional wireless power receiver clients.