Abstract: The semiconductor switch control device includes a first FET provided between an anode of a battery and a load and a second FET arranged between a cathode of the battery and the load, in which in a case where a current value that is larger than an abnormal current value indicating that a first drain current flowing through the first FET is an overcurrent and smaller than a maximum current value of the first drain current that can be tolerated by the first FET is set as a current limit value, a limiting gate voltage for setting the current value of the first drain current to a current limit value is applied to the second FET.

Abstract: A system, apparatus, method, and manufacture for generating backup power in a wireless communications system such as a wireless communications service base station. The system includes a communications interface, a primary power interface, a generator, rectifiers, and a battery circuit. During normal operation, the communications interface is powered from the primary power interface. During a power outage, the communications interface is powered from either the generator or the battery circuit. The generator is cycled on and off during power outages to charge the battery circuit while conserving fuel. To decrease rectification loss, rectifiers are run near full load while rectifying the generator output.

Abstract: According to the present disclosure, a switching system for a fixture includes a first switch unit with a first switch actuator and a first power cord with an integrally formed power connector at its distal end. The first switch unit has an electrical receptacle configured to receive a corresponding power connector of a cord electrically connected to the fixture. The electrical receptacle is electrically coupled to the first power cord through the first switch actuator to provide switching actuation to the fixture. The switching system may include a second switch unit that includes a second switch actuator and a second power cord with an integrally formed power connector at its distal end. The first and second switch units are connectable to provide a three-way switching electrical connection.

Abstract: Embodiments disclose solar energy generation systems with automatic smart transfer switches. An energy generation system includes an array of PV modules, a PV inverter coupled to the array of PV modules, and a battery pack configured to store DC power from the PV modules and output the stored DC power. The energy generation system can further include a storage inverter/hybrid inverter PCS coupled to the battery pack, and an automatic smart transfer switch configured to select between an AC grid and the storage inverter/hybrid inverter PCS for outputting to a main electrical panel, where the automatic smart transfer switch is configured so that in a first position, the AC grid is coupled to the main electrical panel, and in a second position, both the storage inverter is coupled to the main electrical panel.

Abstract: The present disclosure relates to an electric vehicle charging station including a transformer. The transformer is a multi-winding transformer including one primary winding and a plurality of secondary windings. The secondary windings are electrically isolated from one another. The electric vehicle charging station further includes an AC/DC converter to which a secondary winding is connected.

Abstract: There is provided a lighting circuit configured to drive a light emitting unit including a first light source and a second light source connected in series. The lighting circuit includes a first pin connected to one end of the first light source, a second pin connected to a connection node of the first light source and the second light source, a third pin connected to one end of the second light source, a drive circuit configured to supply a drive current to the light emitting unit, a bypass switch provided between the second pin and the third pin, a first resistor provided in parallel with the bypass switch between the second pin and the third pin, and an abnormality detection circuit configured to detect abnormality based on a detection voltage generated between the second pin and the third pin when an ON signal is applied to the bypass switch.

Abstract: An energy storage system includes: a grid tie unit comprising at least one DC/AC converter; and multiple pods connected to the grid tie unit, each pod including: a number of cells; and a power electronics unit, wherein the cells are floating relative to the system and are galvanically isolated therefrom. The multiple pods may be organized into packs, with a pack including a thermal management system.

Abstract: A control architecture for electric vehicle wireless power transmission systems that may be segmented so that certain essential and/or standardized control circuits, programs, algorithms, and the like, are permanent to the system and so that other non-essential and/or augmentable control circuits, programs, algorithms, and the like, may be reconfigurable and/or customizable by a user of the system. The control architecture may be distributed to various components of the wireless power system so that a combination of local or low-level controls operating at relatively high-speed can protect critical functionality of the system while higher-level and relatively lower speed control loops can be used to control other local and system-wide functionality.

Abstract: Various embodiments of the present technology relate generally to wireless power systems. More specifically, some embodiments relate to the use of time reversal techniques utilizing time diversity (e.g., different multipath arrivals at the same antenna) to achieve coherency from the same transmission node. For example, instead of initiating outgoing transmissions (e.g., power signals) at the same time, various embodiments can initiate the outgoing signals from the various antennas in a staggered timing that is a reversal of the arrival times of an incoming signal. As a result of staggering the start of the outgoing signals, the signals will arrive at the destination at approximately the same time even though they have traveled different paths having different propagation delays.

Abstract: A method for monitoring an uninterruptible power supply system described herein includes receiving, at a server, data associated with a first UPS group having a first redundancy level; receiving, at the server, data associated with a second UPS group having a second redundancy level; monitoring the uninterruptible power supply system based on the first redundancy level and the second redundancy level; and based on the monitoring, providing control signals to a first device associated with the first UPS group and a second device associated with the second UPS group.

Abstract: An apparatus for determining a relative position of a wireless power transmitter from a wireless power receiver is provided. The apparatus comprises a plurality of sense coils, each configured to generate a respective signal under influence of an alternating magnetic field comprising a plurality of wave pulses, each wave pulse occurring in a respective time slot of a plurality of time slots. The apparatus further comprises a processor configured to determine the relative position of the wireless power transmitter from the wireless power receiver based on the respective signal from each of the plurality of sense coils.

Abstract: A non-contact power supply device is used in a processing apparatus including a moving unit movable inside a closed container. The device supplies electric power to the moving unit from outside the closed container. The power supply device includes a feed unit and a heat dissipater. The feed unit includes a feed line and a power supply transformer. The feed line has a feed region arranged inside the closed container along the moving direction of the moving unit. The transformer is arranged inside the closed container so as to be opposed to the feed region in a non-contact manner and is provided so as to move together with the moving unit. The heat dissipater includes a portion on one end side connected to the feed region so as to be capable of conducting heat thereto, and a portion on the other end side extending outside the closed container, so that heat generated in the feed region is partially dissipated outside the closed container.

Abstract: A system for a controller area network (CAN) transceiver of a motor vehicle including a main power supply, the main power supply being unregulated, a secondary power supply set above a minimum operating voltage of the CAN transceiver, the secondary power supply being regulated, a first diode, the first diode allowing the main power supply to power the CAN transceiver, a second diode, the second diode allowing the secondary power supply to power the CAN transceiver, wherein when the main power supply has a low cranking voltage below a normal operating voltage range, the first diode is reverse bias and the second diode is forward bias at the low cranking voltage, the secondary power supply powers the CAN transceivers at the low cranking voltage, thereby allowing the CAN transceiver to remain ON at the low cranking voltage.

Abstract: An electronic apparatus includes an antenna that wirelessly receives power; a power control unit that accumulates or supplies power received by the antenna by inputting power; a communication unit that communicates with a power supply apparatus via the antenna; a switching unit that switches between a path from the antenna to the power control unit and a path from the antenna to the communication unit; and a driving unit that operates with power received by the antenna and drive the switching unit, wherein an input impedance of the driving unit viewed from the antenna is higher than an input impedance of the power control unit viewed from the antenna or an input impedance of the communication unit viewed from the antenna.

Abstract: A contactless power transmitting device is capable of contactlessly transmitting power to a power receiving device. The contactless power transmitting device includes a power transmitting unit configured to be capable of contactlessly transmitting power to the power receiving device, and a communication unit configured to send information, which relates to a magnetic flux distribution of the power transmitting unit during power transmission, to the power receiving device.

Abstract: The present disclosure provides a communication and power transfer system, the system comprising a transmitter capable of emitting a signal (e.g. microwaves) and comprising a means for modulating the frequency of a signal to a frequency modulated signal, and a receiver, the receiver synchronized to be in resonance with the frequency modulated signal so as to be able to receive signal. Methods for using carrier wave for communication and power transfer are also provided. The present disclosure provides a secure communication and power transfer systems utilizing frequency modulated microwaves that are minimally absorbed by organic matter and can move through aqueous media.

Abstract: An uninterruptible power supply unit is configured such that, during charging of a first battery pack, and until, after the first battery pack is charged to a fully charged state, the voltage of the first battery pack is lowered below an upper limit voltage of a load device, discharging of the first battery pack is prohibited, and discharging of the second battery pack is allowed, and such that, during charging of a second battery pack, and until, after the second battery pack is charged to a fully charged state, the voltage of the second battery pack is lowered below the upper limit voltage of the load device, discharging of the second battery pack is prohibited, and discharging of the first battery pack is allowed.

Abstract: An energy storage system operable in a charging phase and in a discharging phase is disclosed. The energy storage system includes M energy storage units and N power converters, where M is at least two and N is at least one. The energy storage system also includes a switching fabric that reconfigurably couples the energy storage units to the power converters and a controller that reconfigures the switching fabric.

Abstract: A controlled receptacle device provides power to connected devices when certain predetermined conditions are met. A wired or wireless control signal is received by the receptacle to control a switch within the receptacle device to open or close based on the predetermined conditions. In a duplex receptacle configuration either one or both of the outlets within the device are controlled by the control signal. In the condition where only one of the two outlets is controlled, the other outlet is wired to always be on, or providing power to the face terminals of the outlet.

Abstract: Energy-harvesting and -storage devices in conveyor belts and methods for molding those devices integrally into modular plastic belt links. Electroactive polymers or piezoelectric fibers co-injected with a base polymer to form belt modules harvest energy from strain or vibrations in the conveyor belt to power belt on-board devices.