Abstract: Drivers (1-10) for driving load circuits (100) comprise supply circuits (1) for providing supply current signals from a mains source to the load circuits (100), storage circuits (2) for storing energy destined for the load circuits (100), and switch circuits (3-8) coupled with the storage circuit (2), the load circuit (100) and the supply circuit (1), and for switching the coupling among the storage circuits (2), the load circuit (100) and the supply circuit (1). The switched storage circuits (2) can, in charge states, be charged via the supply current signals, and in bypass states be bypassed, and in dependent discharge states be discharged via the load circuit (100) together with the supply current signals, and in independent discharge states be discharged via the load circuits (100) independently from the supply current signals for a substantial time duration.

Abstract: A foreign object detection method and apparatus for performing same. A wireless power transmitter has a matching network and transmit coil. The method includes, stimulating the transmit coil with electrical signals at a plurality of frequencies, measuring a response of the transmit coil to the electrical signals, determining a quality factor and/or resonant frequency of the transmit coil based upon the measured response, and analyzing the quality factor and/or resonant frequency to determine whether a foreign object is coupled to an electromagnetic field generated by the transmit coil.

Abstract: A method and a control system using the same for coordinating control of a plurality of wind turbines of a wind farm during a fault in a utility grid to which power is to be delivered via at least one cable of the wind farm.

Abstract: Wireless power transmitters and methods of management thereof are disclosed herein. An example wireless power transmitter includes an antenna array and a communication radio configured to: establish a communication connection with a respective wireless power receiver; and receive device data from the respective wireless power receiver, the device data used to determine a location of the respective wireless power receiver. The example wireless power transmitter also includes a controller in communication with the antenna array and the communication radio, the controller configured to: determine whether the respective wireless power receiver is authorized to receive power from the wireless power transmitter; if so, determine a particular time at which RF power waves should be transmitted to the respective receiver, the particular time based at least in part on a charging schedule for the transmitter; and instruct the antenna array to transmit radio frequency (RF) power waves at the particular time.

Abstract: The present invention discloses a parallel connected power supply cabinet system which comprises a plurality of power supply cabinets electrically parallel connected. The power supply cabinet comprises a frame with a plurality of installation chambers formed from the top of the frame downwardly to the bottom of the same. A power distribution unit is installed in one of the installation chambers near the top of the frame. A plurality of power supply units installed in the rest of the chambers respectively. The power distribution unit controls the input power of the power supply cabinet.

Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device using an output circuit that includes a wireless power transmitting coil. Measurement circuitry is coupled to the output circuit to help determine whether the wireless power receiving device is present and ready to accept transmission of wireless power. The measurement circuitry includes a measurement circuit that is coupled to the output circuit and that measures signals while oscillator circuitry supplies the output circuit with signals at a probe frequency. The measurement circuitry also includes a measurement circuit that is coupled to the output circuit and that measures signals while the oscillator circuitry sweeps signals applied to the output circuit between a first frequency and a second frequency to detect sensitive devices such as radio-frequency identification devices. Impulse response circuitry in the measurement circuitry is used to make inductance and Q factor measurements.

Abstract: A method and apparatus for modular power distribution includes an end module and at least one switching module having a switching module electrical power interface configured to electrically connect to at least one of the end module electrical power interface, to another switching module electrical power interface, or to at least one voltage converter module, and having at least one of a switching element, an input/output connector, a switching module communication interface, or a bus bar connector, wherein the modules are physically secured.

Abstract: A wireless power transmitter includes a switch circuit including switches connected to a transmission resonator; a current detector configured to detect a transient current induced in the transmission resonator; and a controller configured to control the switch circuit and adjust an output of the wireless power transmitter based on an amplitude of the transient current.

Abstract: The present invention generally relates to the field of uninterruptable power supplies (UPSs) and more specifically, to UPSs using supercapacitors (also may be referred to as ultracapacitors) and/or other capacitor and/or battery elements. In an embodiment, a UPS of the present invention can individually regulate the charging of its capacitive elements to avoid overcharging and/or achieve a more efficient charge state.

Abstract: A vehicle battery system and a method of controlling charge of a battery in the system are provided. The system includes a first battery module that has a plurality of battery cells connected to each other in series and a second battery module that has a plurality of battery cells connected to each other in series. The second battery module is connected to the first battery module in series. A controller then monitors a state of charge of each of the first and second battery modules, such that when the state of charge of one of the first and second battery modules is less than a predetermined level, the controller performs active cell balancing between the battery cells of the first battery module and the battery cells of the second battery module.

Abstract: The present invention relates to a connector for wireless transmission of data and/or power between separate devices comprising such a connector of a system, in particular of a patient monitoring system, said separate devices comprising such a connector.

Abstract: A vehicle control method is provided for the suppression of electric power supplied from a battery to other electrical equipment in the event an alternator fails during automatic driving by use of automatic driving electrical equipment. The vehicle control method includes detecting surrounding information of the vehicle in an event the alternator fails during automatic driving by use of the automatic driving electrical equipment, estimating electric power to be consumed by the automatic driving electrical equipment until the vehicle stops based on a plan for stopping the vehicle in a safe location in accordance with the surrounding information that was detected, and reducing the electric power supplied from the battery to the other electrical equipment apart from the automatic driving electrical equipment as the estimated amount of electric power increases.

Abstract: An uninterruptible power supply (UPS system) includes a first converter circuit, a second converter circuit and a DC bus coupled to the first and second converter circuits. The system further includes a control circuit configured to control the first and second converter circuits and to selectively couple the first and second converter circuits to an AC source and a load to provide a first mode of operation wherein the first and second converter circuits respectively operate as a rectifier and an inverter to serve the load from the AC source and a second mode of operation wherein the first and second converter circuits operate as parallel inverters to serve the load from the DC bus. The control circuit may be configured to couple the AC source to the load to bypass the first and second converter circuits in a third mode of operation.

Abstract: Various embodiments are described herein for methods, devices and systems for providing power supply to an electrical load within a facility, which is connected to a power network to perform load displacement. The power management system includes a controller coupled to an electrical panel for controlling the operation of the electrical load, the controller being configured to determine a target power amount to be provided to the electrical load based on peak power amount required by the electrical load. The system includes a power regulator for generating at least one control signal based on the target power amount, and the power generation system for receiving the at least one control signal, generating target electrical power corresponding to the target power amount and transmitting the target electrical power to the electrical panel via a DC voltage power bus.

Abstract: Discussed is a photovoltaic system including a plurality of photovoltaic modules outputting AC power, a plurality of communication devices to receive respective reference signals from the plurality of photovoltaic modules and to output reference signal information corresponding to the reference signals, a gateway to receive the reference signal information and to allocate network information to each of the plurality of photovoltaic modules and to match ID information received from the plurality of photovoltaic modules with the network information, and a server to calculate position information on the plurality of photovoltaic modules based on the reference signal information from the gateway and to perform array building corresponding to arrangement of the plurality of photovoltaic modules based on the position information, the ID information, and the network information.

Abstract: A circuit that can rapidly and precisely change the state of any circuit with some form of memory, whether it is a voltage across a capacitor, a current in an inductor, a digital value, or otherwise, using cyclically swapped circuits. For the case of a value stored on a capacitor: By swapping extra capacitors with preemptively set voltages using electronic switches, inherent settling times and defects of real RC circuits can be replaced with electronic switching times and switch defects. This dramatically improves speed and performance and is applicable on many circuit types including faster acquisition sample and hold circuits, faster amplifier nulling circuits, and any circuit that requires rapidly changing the DC voltage stored on a capacitor, and any circuit that requires rapidly changing the state or a circuit that has memory.

Abstract: An induction charging device and a method for inductively transmitting energy to an induction rechargeable battery device, with at least one primary oscillating circuit that includes at least one charging coil, and with a control/regulation unit for controlling the primary oscillating circuit with an inverter circuit. An excitation frequency of an output signal of the inverter circuit made up of half-waves essentially corresponds to a resonant frequency of the primary oscillating circuit. The induction charging device provides that, for reducing a charging current, the control/regulation unit, after an end-of-charge voltage of the induction rechargeable battery device is reached, controls the inverter circuit so that the output signal periodically sets at least one first half-wave to a high value, and an odd plurality of successive half-waves is then immediately set to a value that is low compared to the high value.

Abstract: A load stepping switch (1) for uninterrupted changeover between winding taps (n, n+1) on a control winding (20) comprises —a changeover switch (2) that comprises a first, second and third changeover contact (2.1, 2.2, 2.

Abstract: The present invention relates to a device for wireless transmission of data and/or power between the device and another device of a system, in particular of a patient monitoring system. The device comprises an identification unit (601) for storing a unique identifier of the device, a connector (602) and a control unit (606). The connector comprises a data transmission unit (603) arranged for transmitting data to and/or receiving data from another device of the system having a counterpart connector, a magnetic coupling unit (604) for transmitting power to and/or receiving power from another device of the system having a counterpart connector by use of inductive coupling, and a detection unit (605) for detecting the strength of magnetic coupling between the magnetic coupling unit and a magnetic coupling unit of a counterpart connector of another device and for detecting the intensity of data received by the data transmission unit from a data transmission unit of the other device.

Abstract: In a photovoltaic device or an operating point control circuit in which a current is output from a corresponding power supply cell or capacitor to between output terminals by periodically cutting off switching elements which are connected in series to a plurality of power supply cells and/or capacitors connected in series between the output terminals via inductors, cutoff duty ratios of all the switching elements are uniformly fixed to the same value in one cycle in which all the switching elements are cut off once.