Abstract: An integral, unitary cover assembly for covering an electrical connection between first and second electrical cables each having a primary conductor and a neutral conductor, includes an elastomeric inner sleeve, an elastomeric outer sleeve surrounding the inner sleeve, and a collapsible duct assembly interposed radially between the inner and outer sleeves. The inner sleeve defines a cable passage to receive the electrical connection and the primary conductors of the first and second cables. The duct assembly includes an outer duct sleeve member defining a first passage and an inner retention member disposed in the first passage. The retention member defines a second passage configured to receive at least one of the neutral conductors therethrough. The duct sleeve member is flexible. The retention member maintains the duct sleeve member in an open configuration when the retention member is disposed in the first passage.

Abstract: Novel tools and techniques are provided for implementing MediaLink Interconnection Boxes (“MIBs”). In some embodiments, a plurality of MediaLink Interconnection Boxes (“MIBs”) or media interconnection devices, which may be disposed throughout a recreational vehicle (“RV”) park or other bulk service provider application sites, or the like, may serve as demarcation units designed to each provide an accessible indoor or outdoor interface where long-term or temporary/transient customers can directly connect to land line service (e.g., POTS service), video or television service, and/or Ethernet or Internet services provided by one or more service providers. Fiber-to-Drop-Point (“FTDP”) and/or point-to-point fiber insertion within a passive optical network (“PON”) communications system may be implemented using apical conduit systems in conjunction with the MIBs.

Abstract: The present invention provides a trip control circuit for a circuit breaker capable of breaking a circuit when a fault current occurs due to a DC current component, as well as an AC current. The trip control circuit comprises a current transformer that has a core allowing a circuit to pass through and a secondary coil for detecting a current flowing on the circuit and providing a current detection signal; an oscillation circuit section that configured to apply an electrical signal to the secondary coil to increase a slope of a hysteresis loop of the current transformer to allow the secondary coil to detect a DC current and an AC current; and a trip determining circuit section that configured to compare a current value indicated by the current detection signal with a predetermined reference current value.

Abstract: In an embodiment, an electronic component fuse 10 includes: (1) an insulator sleeve 11 having a hollow part 11a that opens to the exterior at both ends; (2) a conductor element 12 having a fusible part 12a whose cross-section is smaller than the cross-section of the hollow part 11a, a first engagement part 12b provided at one end of the fusible part 12a, and a second engagement part 12c provided at the other end of the fusible part 12a, where the fusible part 12a is positioned in the hollow part 11a, the first engagement part 12b and the second engagement part 12c are disposed on the respective ends of the insulator sleeve 11; (3) a first terminal 13 having a first connection part 13a connected to the first engagement part 12b; and (4) a second terminal 14 having a second connection part 14a connected to the second engagement part 12c.

Abstract: A residual current device (RCD) comprises test circuitry which issues intermittent first test pulses each simulating a residual current fault for which a corresponding fault signal is generated. In the case of a fault in which a corresponding fault signal is not received in respect of a first pulse, the RCD attempts to force the load contacts open. The test circuitry further issues intermittent second test pulses at a frequency less than that of the first test pulses, each second test pulse simulating a residual current for which a corresponding fault signal is generated. The duration of each corresponding fault signal is greater than the response time of the load contacts to allow the load contacts to open. If the test circuitry detects that the load contacts do not open, the RCD attempts to force the load contacts open.

Abstract: A circuit interrupting device including a loop split interrupter for interrupting a loop split circuit with a high current and a low voltage and a quick whip interrupter for interrupting a charging circuit with a low current and a high voltage.

Abstract: The present disclosure relates to an apparatus for detecting malfunction of a relay, which includes a temperature determination unit configured to determine whether or not a relay resistor is overheated based on a resistance temperature of the relay resistor being connected to a relay; a charging voltage determination unit configured to determine whether or not a variation value of a charging voltage of a direct current (DC) link capacitor according to an operation start of an inverter system exceeds a reference variation value; and a relay malfunction determination unit configured to determine whether or not the relay is malfunctioned based on one or more the determination results whether or not the relay resistor is overheated and whether or not the variation value exceeds the reference variation value.

Abstract: The disclosure provides an over-current protection circuit. A signal generating block in the over-current protection circuit generates one or more input voltages, a summed voltage and an average voltage in response to one or more differential voltages. A control block generates one or more control signals in response to the one or more input voltages and the average voltage. An analog control loop block generates an initiation signal in response to the summed voltage and an output voltage. A phase control logic block generates one or more PWM (pulse width modulated) signals in response to the initiation signal and the one or more control signals.

Abstract: The invention provides a method for overcoming the influence of out-flowing current on bus differential protection. The method comprises the following steps: acquiring and processing branch current signals; selecting a fault bus, and determining the branch current with maximum amplitude from branches connected with the fault bus; calculating differential current and restraint current of a large differential element, and determining whether the large differential element acts. The method for overcoming the influence of out-flowing current on bus differential protection does not need to reduce the braking coefficient during splitting operation in a two-bus connecting mode, can adaptively improve the sensitivity of bus differential protection under an internal fault in the presence of out-flowing current, and simultaneously ensures the reliability under an external fault.

Abstract: An electronic device is configured with sub-assemblies including a main logic board, flexible printed circuit, and dual battery packs that are assembled together with electrical connectors to enable power from the battery packs to flow over a power bus that is distributed along the flexible printed circuit and main logic board. A protection circuit module (PCM) in each battery pack is configured to determine a state of each of the connections among the sub-assemblies (i.e., whether or not properly assembled to provide electrical continuity through the connector) so that power from the battery packs is switched on to the power bus only when electrical continuity is verified at each of the connectors. In the event that any connection is faulty, for example due to a misalignment of a connector during assembly that prevents electrical continuity to be established through a connector, neither PCM will switch power on to the power bus.

Abstract: An electric storage apparatus includes an electric storage device and a protective circuit for cutting off a power path when detecting abnormality including overcharge, the protective circuit being connected to an outside connecting terminal, to which a power generator and an outside load operated by electric power from the electric storage apparatus are connected. The protective circuit includes a charging or discharging path connecting the electric storage device to the outside connecting terminal, a potential difference measuring unit for measuring a potential difference at two points on the charging or discharging path, the two points on the charging or discharging path being located between a positive electrode of the electric storage device and the outside connecting terminal, a self-holding switch disposed between the two points on the charging or discharging path, and a current measuring unit for measuring a current.

Abstract: Apparatus for increasing the efficiency of a starter battery for a starter motor of an internal combustion engine in a battery pack arrangement with one or more lithium based cells. The invention includes a solid state switching configuration for high powered battery systems for protecting against over-charging, over-discharging and short circuiting of batteries, especially starter batteries for internal combustion engines, and jumper cables having associated integral control devices, including within the cable housings.

Abstract: This document describes techniques and apparatuses of load allocation for multi-battery devices. In some embodiments, these techniques and apparatuses determine an amount of load power that a multi-battery device consumes to operate. Respective efficiencies at which the device's multiple batteries are capable of providing power are also determined. A respective portion of load power is then drawn from each of the batteries based on their respective efficiencies.

Abstract: A control system (300) allows recognized standard premise electrical outlets, for example NEMA, CEE and BS, among others to be remotely monitored and/or controlled, for example, to intelligently execute blackouts or brownouts or to otherwise remotely control electrical devices. The system (300) includes a number of smart receptacles (302) that communicate with a local controller (304), e.g., via power lines using the TCP/IP protocol. The local controller (304), in turn, communicates with a remote controller (308) via the internet.

Abstract: A method for generating a net load forecast for a utility grid, the grid including intermittent distributed energy resources and loads, comprising: defining two or more load forecast zones, each zone being associated with a load profile type and a climate zone type; assigning each of the loads to one of the zones based on the load profile and climate zone types associated with the load; assigning each of the energy resources to at least one of the zones based on the climate zone type associated with the energy resource; for each zone, generating an electrical energy consumption forecast for loads, an electric power generation forecast for energy resources, and a net load forecast from the electrical energy consumption and electric power generation forecasts; combining the net load forecast for each zone to generate the net load forecast for the grid; and, presenting the net load forecast on a display.

Abstract: A system of surge suppressor units is connected at multiple locations on a power transmission and distribution grid to provide grid level protection against various disturbances before such disturbances can reach or affect facility level equipment. The surge suppressor units effectively prevent major voltage and current spikes from impacting the grid. In addition, the surge suppressor units include various integration features which provide diagnostic and remote reporting capabilities required by most utility operations. As such, the surge suppressor units protect grid level components from major events such as natural geomagnetic disturbances (solar flares), extreme electrical events (lightning) and human-generated events (EMPs) and cascading failures on the power grid.

Abstract: A control device for a static var compensator (SVC) includes: a monitoring control unit configured to generate an error presence/absence signal based on a control signal inputted from a system controller; a valve signal processing unit configured to generate a valve state signal based on databack signals respectively inputted from a plurality of valves; a CPU control unit configured to generate a state information signal based on the error presence/absence signal and the valve state signal; and a firing signal output control unit configured to generate a firing signal according to the state information signal.

Abstract: A computer-implemented method for controlling voltage fluctuations of a microgrid including a plurality of distributed generators (DGs) is presented. The computer-implemented method includes collecting, by a resiliency controller including at least a voltage control module, measurement data from the microgrid, using, by a reactive power estimator, reactive power estimations to calculate an amount of reactive power for each of the DGs, and using a dynamic droop control unit to distribute the reactive power to each of the DGs of the microgrid.

Abstract: A method is proposed for real-time economic dispatch in power system operation, especially in systems that include renewable power sources that may cause heavy deviations from a generation schedule due to their uncertain outputs. According to the method an optimal generation schedule is obtained based on forecasted load data. This schedule has to be adjusted if the actual load and renewable energy source outputs unexpectedly deviate from the forecasted value. An algorithm employed in the method is capable of dictating generation adjustments which minimize total generation costs. The algorithm is a modification of the base point and participation factor method. It differs from existing methods in that a precise model of transmission losses is adopted in the algorithm to achieve higher accuracy in optimization. The proposed method also has significant advantage in execution speed so that it is suitable for real-time operation.

Abstract: A DC-to-AC power conversion system includes DC power source assemblies each having a plurality of DC power sources and a combiner coupled to the DC output from the DC power source assemblies. A power inverter is coupled to a DC output of the combiner and configured to invert the DC output to an AC output. The system includes a controller programmed to identify a potential ground fault using current data received from a ground current sensor provided on a ground conductor. After identifying the faulty DC power source using sensed current data received from a current sensor provided on at least one of the positive conductors and the negative conductors, the controller opens the DC breaker switches on a positive conductor and a negative conductor of the combiner to disconnect the faulty DC power source assembly from the power inverter.

Abstract: A power supply apparatus of the disclosure is interconnected to the grid together with a power generation apparatus, and configured to control a solar cell and a storage battery. The power supply apparatus includes an inverter for converting DC power from the solar cell and the storage battery into AC power, a first relay for switchover a connection between the inverter and the grid, an AC-DC converter capable of converting AC power from the power generation apparatus into DC power and supplying the DC power to the storage battery during an grid-independent operation, and a controller for controlling such that, at the time of recovery of the grid from the power outage, the AC-DC converter starts operating, that the first relay is switched on, and that the AC-DC converter keeps operating until a reverse power flow to the grid is detected.

Abstract: A power supply system is provided. The power supply system includes a first controller for controlling charge and discharge of a first electric storage apparatus and a second controller for controlling charge and discharge of a second electric storage apparatus. The first controller generates first scheduling data indicating transition of electric power to be charged and discharged from the first electric storage apparatus during a first prediction period. The second controller generates second scheduling data indicating transition of electric power to be charged and discharged from the second electric storage apparatus during a second prediction period containing the first prediction period. Generation of the first scheduling data is performed based on the second scheduling data previously generated by the second controller.

Abstract: A power line interface is electrically connectable to a direct-current power system including a power line. A voltage sensor measures a first voltage value of direct current flowing through a power line. A bidirectional DC-DC convertor circuit is electrically connected to the power line interface. A controller receives the first voltage value measured by the voltage sensor and a power charge or discharge command value indicating an amount of power to charge the battery or an amount of power to be discharged from the battery, and controls the bidirectional DC-DC converter circuit based on the first voltage value and the power charge or discharge command value. The bidirectional DC-DC convertor circuit controls the first voltage value to approximate to a prescribed voltage value, and a current value of a direct current flowing between the bidirectional DC-DC converter circuit and the power line to approximate to a prescribed current value.

Abstract: A wireless rail system for providing power and control to auxiliary devices on the rail is disclosed. Such a system includes a one or more channels mounted to a structural building component forming a rail. Auxiliary devices on the rail communicate with each other and user devices. Each of the auxiliary devices are addressable either wirelessly or by a parallel bus within the rail. The auxiliary devices are connected and disconnected from the rail by rotating approximately 90 degrees.

Abstract: There are provided a thin film coil and an electronic device having the same, the thin film coil including a substrate; and a coil pattern including a first coil strand and a second coil strand formed on both surfaces of the substrate, respectively, wherein the first coil strand formed on one surface of the substrate includes at least one gyration path that passes through the other surface of the substrate and gyrates.

Abstract: There are provided a thin film coil and an electronic device having the same, the thin film coil including a substrate; and a coil pattern including a first coil strand and a second coil strand formed on both surfaces of the substrate, respectively, wherein the first coil strand formed on one surface of the substrate includes at least one gyration path that passes through the other surface of the substrate and gyrates.

Abstract: This control device includes: a reception unit that receives information that indicates characteristics of a power supply/demand adjustment process; and a determination unit that, on the basis of the information that indicates the characteristics of the power supply/demand adjustment process, determines as usage information to be used for the adjustment process the state of a power grid or an index that relates to an adjustment power amount that was received from a predetermined device.

Abstract: An onboard charging system for an electric vehicle is configured to communicate with a power supply through exchange of control signals on a power supply line by modulating a charging current being supplied to the charging system. The charging system is capable of communicating fault and battery parameter data to the power supply, as well as a requested charging current used to regulate the power supply output. The power supply may convert high voltage AC power into a controllable DC output supplied directly to the electric vehicle, thereby providing a convenient means for the vehicle to initiate charging during operations. Connection between the electric vehicle and the power supply may be effected using an extendible and retractable electrical connection, such as a mechanical pantograph.

Abstract: An apparatus includes a plurality of energy storage modules (ESMs) to store charge. Each ESM includes module inputs to receive the charge. A plurality of charging circuits supply electrical energy to charge the ESMs via an output from each of the charging circuits. A switch network selectively switches each of the outputs from each of the charging circuits to the respective module inputs of each of the ESMs in response to a control command.

Abstract: An uninterruptible power supply (UPS) includes a first battery set and a second battery set. The UPS includes a charging circuit to charge the battery sets using alternating current (AC) power. The UPS includes a slot receptive to insertion of different types of output modules that each include an inverter to convert direct current (DC) power from the first and second battery sets, including a first type that connects the first and second battery sets in parallel and a second type that connects the battery first and second sets in series.

Abstract: A self-powered electronic shelf label (ESL), comprising: a processing circuitry; a display communicatively coupled to the processing circuitry; a communication circuit communicatively coupled to the processing circuitry, wherein the communication circuit is configured to receive and transmit data from a control device; and a power manager connected to the processing circuitry, the display, an energy storage, and a plurality of photovoltaic (PV) cells, the power manager including a maximum power point tracker (MPPT) circuit, wherein the MPPT circuit is configured to continuously determine a maximum power point of the PV cells, wherein the power manager is configured to connect, based on the determined maximum power point, at least a portion of the plurality of PV cells to a load such that the plurality of PV cells produce a voltage equal to the continuously determined maximum power point.

Abstract: The present disclosure discloses a battery device including a battery, a charging and discharging switch unit configured to control charging and discharging of the battery, a pre-charging unit configured to be charged during discharging of the battery, and a discharging unit configured to discharge the charge charged in the pre-charging unit.

Abstract: Unique systems, methods, techniques and apparatuses of onboard battery charger systems are disclosed. One exemplary embodiment is a battery charging system comprising an isolation device and an electric vehicle charger. The isolation device includes an AC input terminal; an AC output terminal; two DC output terminals; a first portion of a detection circuit including a first sensor and a first resistor coupled in series; and a first controller. The charger includes an AC input terminal; two DC input terminals; and a second portion of the detection circuit including a second sensor and a second resistor coupled in series. The first controller is structured to isolate the AC input terminal of the isolation device from the AC output terminal of the isolation device when the two DC input terminals of the electric vehicle charger are not coupled to the two DC output terminals of the isolation device.

Abstract: A charge collection device includes a capacitor, a first switch disposed between one terminal of the capacitor and a positive electrode of a DC power source, a second switch disposed between the other terminal of the capacitor and a negative electrode of the DC power source, a third switch disposed between the one terminal of the capacitor and a ground, a fourth switch disposed between the other terminal of the capacitor and the ground, and a charge collection circuit that has a fifth switch connected to the one terminal of the capacitor and configured to supply charge stored in the capacitor to an external circuit via the fifth switch.

Abstract: A vehicle power supply control device includes a plurality of area power supply slaves connected with respective different device groups configured with a plurality of different devices installed in a vehicle, and controlling power supplied to the devices in the connected device groups, a plurality of area power supply masters that are connected with respective different area power supply slaves and control power supplied to the connected area power supply slaves, and a vehicle power supply master connected with the area power supply masters and a battery of the vehicle and controlling power supplied to the area power supply masters from the battery.

Abstract: A circuit includes an energy storage device configured to provide pulses of energy to a load, a charger circuit coupled to the energy storage device to receive electrical energy from a peak energy constrained supply, a controller coupled to the charger circuit to control the charger circuit to charge the energy storage device as a function of time between pulses to reduce peak energy provided by the peak energy constrained supply.

Abstract: A wireless charging coil with a high Q factor includes a plurality of wire groups. Each of the wire groups includes a plurality of wires, a self-bonding film and a plurality of insulation layers. The wires are spun together in a helical manner to form a self-woven structure of the wire group. The self-bonding film surrounds the plurality of wires, and each of the insulation layers covers a surface of a wire. The plurality of wire groups together are wound into a plurality of turns on a same winding surface, and all of the plurality of wire groups are wound on the same winding surface. Each turn is wound by the plurality of wire groups.

Abstract: Far field telemetry operations are conducted between an external device and an implantable medical device while power is being transferred to the implantable medical device for purposes of recharging a battery of the implantable medical device. The far field operations may include exchanging recharge information that has been collected by the implantable medical device which allows the external device to exercise control over the recharge process. The far field operations may include suspending far field telemetry communications for periods of time while power continues to be transferred where suspending far field telemetry communications may include powering down far field telemetry communication circuits of the implantable medical device for periods of time which may conserve energy. The far field operations may further include transferring programming instructions to the implantable medical device.

Abstract: Provided are a wireless charging and communication board, and a wireless charging and communication device, the wireless charging and communication board including: a soft magnetic layer; a polymeric material layer arranged on one surface and the other surface of the soft magnetic layer and extending longer than an exposed portion of the soft magnetic layer; and a coil pattern arranged on the polymeric material layer.

Abstract: In one embodiment, a method includes wirelessly coupling a transmitter to a wireless device; determining a first power transfer value of a signal transmitted from the transmitter to the wireless device with a first transmit impedance; determining a second power transfer value of the signal transmitted from the transmitter to the wireless device with a second transmit impedance; and selecting the first transmit impedance based on received power-level information indicating that the first power transfer value is greater than the second power transfer value.

Abstract: A method for operating an electrical charging station at an electrical grid comprising, alongside electrical loads, at least one regenerative energy generator, at least one conventional generator operated by fossil fuels, and at least the electrical charging station for storing and re-emitting electrical power, wherein the charging station is controlled in such a way that the feed-in power is limited in terms of its change over time.

Abstract: An energy storage apparatus. The energy storage apparatus includes an energy storage, wherein the energy storage is connected to at least one energy source, wherein the energy storage is configured to store energy from the at least one energy source; a power supplier, wherein the power supplier is connected to an external load, wherein the power supplier is configured to provide energy from the energy storage to the external load; and a distribution regulator, wherein the distribution regulator is configured, in real-time, to operate the energy storage apparatus in a reduced power mode.

Abstract: A distributed power system including multiple (DC) batteries each DC battery with positive and negative poles. Multiple power converters are coupled respectively to the DC batteries. Each power converter includes a first terminal, a second terminal, a third terminal and a fourth terminal. The first terminal is adapted for coupling to the positive pole. The second terminal is adapted for coupling to the negative pole. The power converter includes: (i) a control loop adapted for setting the voltage between or current through the first and second terminals, and (ii) a power conversion portion adapted to selectively either: convert power from said first and second terminals to said third and fourth terminals to discharge the battery connected thereto, or to convert power from the third and fourth terminals to the first and second terminals to charge the battery connected thereto.

Abstract: A digitalized double-excitation uninterrupted switching power supply comprises a main transformer provided with a primary coil and a secondary coil, a main loop, a synchronous rectification output loop, a synchronous direct-current converter and a digital control unit, wherein the main loop comprises a high-voltage switching network, a resonant inductor, the primary coil and a resonant capacitor. The synchronous rectification output loop comprises a current-doubler rectifier formed by connecting two synchronous rectifier tubes in series oppositely and the secondary coil in parallel, and a filter circuit connected to two output ends of the current-doubler rectifier. The synchronous direct-current converter comprises two low-voltage switching tubes, an isolator and a low-voltage direct-current source.

Abstract: A system includes a plurality of power routing units. Each of the power routing units includes a first AC port, a second AC port, and a static switch configured to couple and decouple the first AC port and the second AC port. Each of the power routing units further includes a DC port and a bidirectional converter circuit coupled between the second AC port and the DC port. The DC ports of the power routing units are coupled in common to a DC bus and the system further includes a control circuit configured to control the power routing units to provide power transfer between at least two of the power routing units via the DC bus.

Abstract: A power switching device includes a primary power source, a backup power source, and a power switching circuit, and the power switching circuit can switch rapidly between the two or more power sources. The power switching circuit includes a first switching module, a second switching module, and a control module. The first switching module includes first through fourth relays, and first through fourth driving units. The first switching module also includes a first bidirectional thyristor and a second bidirectional thyristor. A power switching circuit is also provided.

Abstract: In an example, an apparatus includes a charger for rectifying a direct current charge from an input alternating current voltage. A battery pack stores the direct current charge in a first string of battery modules and a second string of battery modules. An inverter is connected directly to the battery pack and inverts the direct current voltage to an output alternating current voltage. In one example, the first string of battery modules is directly connected to the inverter in parallel with the second string of battery modules.

Abstract: The present disclosure is directed to systems and methods for controlling an electrical system using simulation-based setpoints. Some embodiments include control methods that enable recalculation of the optimal setpoints during demand windows. Some embodiments include a multi-mode controller to control an electrical system in a charge mode and a demand mode. Some embodiments include techniques for load and generation learning and prediction. Some embodiments include consideration of external data, such as weather.

Abstract: A wireless power transfer system (100) includes a transmitter (110) configured to transmit power to a receiver (120), for example, through coupled resonators (111,121). The transmitter receives feedback from the receiver, and uses the feedback to control the power transmission, to control a parameter at the receiver, for example, a rectified voltage output by the receiver. The feedback to the transmitter may be provided, for example, by an out-of-band radio system (117, 126) between the transmitter and receiver, by a reflection coefficient at the transmitter (116), and/or by an encoded modulation of power in the receiver, for example, in an impedance matching module (121). The transmitter may control the transmitted power, for example, by controlling a transmitter signal generator voltage (VSIG), a transmitter gate driver voltage (VGD), a transmitter amplifier voltage (VpA), and/or an impedance setting in a transmitter impedance matching module (111).

Abstract: This disclosure provides methods and apparatus for wirelessly transferring power. A first aspect of this disclosure is an apparatus for receiving power wirelessly. The apparatus comprises a receive circuit configured to receive wireless communication and charging power. The apparatus also comprises a metallic structure defining a gap extending from a first surface to a second surface, and through the metallic structure, the first surface opposite the second surface. The metallic structure is configured to receive the charging power from a wireless charging field oscillating at a first frequency. The metallic structure is further configured to convey the received power to the receive circuit via first and second connecting feeds. The metallic structure is also further configured to shield the receive circuit from interference at frequencies other than the first frequency.