Abstract: A method and system are disclosed for calibrating a mid-voltage node in an integrated circuit including an input-output circuit having charge-recycling stacked voltage domains including at least first and second voltage domains. In one embodiment, the method comprises transmitting data through the input-output circuit, including transmitting a first portion of the data across the first voltage domain, and transmitting a second portion of the data across the second voltage domain. The method further comprises measuring a specified characteristic of the data transmitted through the input-output circuit; and based on the measured specified characteristic, adjusting a voltage of said mid-voltage node to a defined value. The voltage of the mid-voltage node may be adjusted to accomplish a number of objectives, for example, to achieve a desired trade-off between power and performance, or so that the two voltage domains have the same performance.

Abstract: The present invention provides a fault current limiter which can reduce an abnormal current, such as a fault current, in a power system through the magnetic turn-off which increases the reactance of an electric circuit by changing the magnetic circuit. The fault current limiter for limiting a current supplied through a power supply path, according to the present invention, includes: an iron core having three legs of which the upper and lower portions are connected to each other; a primary winding wound around each of the three legs of the iron core and having both ends connected to the power supply path; and a secondary winding wound around each of the three legs of the iron core and having both ends connected to each other through a first switching device.

Abstract: A wind power converter includes a multiple of phase power converters, each of which being adapted to convert power output from a corresponding phase of a wind generator to a corresponding phase of a grid. Each of the phase power converters includes a full-wave rectifier, being adapted to rectify the power input through a first terminal and a second terminal from the corresponding phase of the wind generator; a capacitor being adapted to be charged by the power rectified by the full-wave rectifier; and a full-wave active inverter, being adapted to invert the power stored in the capacitor and output the inverted power to the corresponding phase of the grid through a third terminal and a fourth terminal. The first terminal or the second terminal is connected to a first virtual neutral; and the third terminal or the fourth terminal is connected to a second virtual neutral. By having such topology, each phase power converter serves as a power conversion module independent of the others.

Abstract: An apparatus includes a signal generator and a control circuit. The signal generator includes a control terminal and includes a current electrode coupled to a terminal that is configured to couple to a power line to receive direct current (DC) power from a power generator. The control circuit is coupled to the current electrode and the control terminal of the signal generator. The control circuit determines an impedance associated with the power generator and applies a control signal to the control terminal of the signal generator to produce an impedance adjustment signal on the current electrode for communication to the power generator through the power line in response determining the impedance.

Abstract: Techniques for controlling dispatch of electric vehicles (EVs) to perform vehicle-to-grid regulation of power of an electric grid are presented. An aggregator component can individually control transitioning respective EVs of a set of EVs between a charging state and a not-charging state. The aggregator component includes a dispatch controller component (DCC) that can employ a defined dispatch algorithm for EVs to facilitate enabling the DCC to perform unidirectional regulation. The DCC can switch EV charging stations on and off using remote switches to meet a system regulation signal. The DCC can use the dispatch algorithm to make determinations regarding which EV to switch using charging priorities, in accordance defined power regulation criterion(s). The aggregator component can reduce communication signals used to adjust dispatch by sending switching signals to only those EVs of the set of EVs that are changing their charging state at a given time.

Abstract: A vehicle is supplied by a first electrical energy storage unit on board the vehicle, and a ground electrical network providing an energy supply by application of a supply voltage through electrical distribution. The first energy storage unit is controllable under a generator regime or a receiver regime. The supply voltage is adjusted, in the generator regime, by applying an algebraically additive supply voltage originating from the first electrical storage unit to the distribution, to maintain a supply voltage above a minimum threshold. In the receiver regime, if a surplus of supply voltage originating at least partially from a second storage unit in the generator regime is detected above the minimum threshold, this surplus is channeled energetically to the first energy storage unit of the vehicle if it is required for operating the vehicle and enables maintaining the supply voltage below a maximum threshold and above the minimum threshold.

Abstract: Systems and methods are provided for creating and operating a Direct Current (DC) micro-grid. A DC micro-grid may include power generators, energy storage devices, and loads coupled to a common DC bus. Power electronics devices may couple the power generators, energy storage devices, and loads to the common DC bus and provide power transfer.

Abstract: An electrical system including multiple bodies having an underlying structure resembling a double helix may be used to produce useful electromagnetic fields for various applications.

Abstract: Power outlets adapted for installation within an enclosure are provided. Power outlets are provided having a safety interlock adapted to prevent the creation of a hazardous condition within the enclosure as a result of the continued operation of an electrical device within the enclosed space. The safety interlock may include current limiting circuitry and hardware, hazard sensing devices interconnected with such current limiting circuitry and hardware or other circuit breaker switches, and combinations of such safety interlocks. The power outlets may also be adapted for installation within a movable enclosure, such as, for example, a drawer.

Abstract: An SNMP network comprises a power manager with an SNMP agent in TCP/IP communication over a network with an SNMP network manager. The power manager is connected to control several intelligent power modules each able to independently control the power on/off status of several network appliances. Power-on and load sensors within each intelligent power module are able to report the power status of each network appliance to the SNMP network manager with MIB variables in response to GET commands. Each intelligent power module is equipped with an output that is connected to cause an interrupt signal to the network appliance being controlled. The SNMP network manager is able to test which network appliance is actually responding before any cycling of the power to the corresponding appliance is tried.

Abstract: A modular power conversion system. The modular power conversion system includes at least one first electric resource, a modular power stage, at least one second electric resource, and wherein the modular power stage comprising at last one module including power electronics for converting power between the at least one first electronic resource and the at least one second electric resource.

Abstract: Tower systems suitable for use at cellular base stations include a tower, an antenna mounted on the tower, a remote radio head mounted on the tower and a power supply. A power cable having a power supply conductor and a return conductor is connected between the power supply and the remote radio head. A shunt capacitance unit that is separate from the remote radio head that is electrically coupled between the power supply conductor and the return conductor of the power cable.

Abstract: A power distribution system comprises a power supply, a plurality of loads connected to one of the power supply and ground and a plurality of pulse generators, each pulse generator connected to each of the plurality of loads, configured to generate pulses to connect the plurality of loads to the other one of the power supply and ground at predetermined frequencies.

Abstract: An arrangement which includes two or more energy storage units for electrical energy connected in series, and two or more balancing resistor units. Each balancing resistor unit is connected in parallel with one of the energy storage units. The arrangement also includes means for determining a voltage over all of the series-connected energy storage units and means for determining the energy storage unit voltages between poles of the energy storage units. One or more of the balancing resistor units include a base resistor unit and a control resistor unit connected in series and a switching device connected in parallel with the control resistor units.

Abstract: Systems and methods are provided for creating and operating a Direct Current (DC) micro-grid. A DC micro-grid may include power generators, energy storage devices, and loads coupled to a common DC bus. Power electronics devices may couple the power generators, energy storage devices, and loads to the common DC bus and provide power transfer.

Abstract: A method and system provide for the cooperative charging of electric vehicles. By using power line communications, chargers of the electric vehicles who are serviced by the same distribution transformer can form self-contained local area networks due to the nature of power line communications. After the chargers of the electric vehicles are coupled to one another through power line communications, they can form a token ring network. According to this token ring network, a predetermined number of tokens can be assigned within the token ring network for permitting chargers with tokens to charge respective electric vehicles while chargers without tokens must wait until they receive a token to initiate charging.

Abstract: A microcomputer includes a first switch coupled between a main power supply terminal and a power supply node, and a second switch coupled between an auxiliary power supply terminal and the power supply node. The microcomputer compares a voltage V1 of the main power supply terminal with a reference voltage VR1. When V1>VR1, the microcomputer turns on the first switch and turns off the second switch, and when V1<VR1, the microcomputer turns off the first switch, and turns on/off the second switch to gradually increase a voltage V3 of the power supply node. Thus, the operation of a clock generation circuit driven by V3 can be stable even when V3 is changed from V1 to V2.

Abstract: A technique for power feeding of a common element of an access network from subscribers of the access network connected to the common element through subscriber lines being electric wires or optical fibers, the method comprises providing the subscribers with respective local power sources, and powering the common element from the one or more local power sources by selectively and/or dynamically combining power conducted there-from through the subscriber lines, thereby allowing at least partial operation of the common element.

Abstract: There is provided a prioritization circuit which selects one of a system power supply and a secondary battery unit as a selected supply source and the other as a non-selected supply source and which causes supply of electric power with a higher priority from the selected supply source to a power supply unit, wherein the non-selected supply source is connected to the power supply unit through a diode element which generates a voltage drop and the selected supply source supplies electric power to the power supply unit without passing through a diode element.

Abstract: Embodiments of the present invention include a power supply device having one or more converters (DC/DC and/or AC/DC) that convert input power supplied from one or more power sources, and a secondary battery which is charged by receiving power supplied from power sources. In addition, however, the power supply device has the unique feature of increasing power output by serially connecting the secondary battery to the DC/DC converter and/or AC/DC converter. In this regard, the secondary battery may comprise a Lithium Ion battery.

Abstract: The proposed system has a plurality of generator systems, each generator system having an alternating current generator directly connected to a rectifier. The alternating current generator is rotationally coupled to a prime mover, wherein, upon operation of the prime mover, the alternating current generator produces an alternating current output , is de-synchronized to further ones of the plurality of generator systems and has a variable generator speed. The rectifier directly connected the alternating current generator is adapted to convert the alternating current output of the alternating current generator into a direct current output. A direct current distribution bus is coupled to the direct current outputs from each of the rectifiers. The system further has a plurality of inverters adapted to receive power from the direct current distribution bus, the output of each inverter being adapted to drive an alternating current motor.

Abstract: A power supply device having a first load operating with a first voltage in a normal operation mode, a second load operating with a second voltage lower than the first voltage in the normal operation mode, and a third load operating with the second voltage in the normal operation mode and a power-saving mode. An auxiliary second-voltage generating circuit configured to, when a main supply voltage is supplied from a main power supply circuit and a primary second-voltage generating circuit does not generate the second voltage with a third-load electric path for carrying therethrough the main supply voltage from the main power supply circuit to the third load without passing through the primary second-voltage generating circuit being broken by a switching circuit, generate the second voltage from the main supply.

Abstract: A method is provided in one example embodiment and includes receiving a message associated with a detection of reactive power in an energy system and inducing a first quantity of reactive power at a power level specified in the message. The first quantity of reactive power is induced in order to mitigate a second quantity of reactive power that is detected on a specific segment of the energy system. The first quantity of reactive power is induced at a local level on which a source associated with the second quantity of reactive power operates. In more specific embodiments, the message is sent in response to a sensor detecting the second quantity of reactive power, where the first quantity and the second quantity of reactive power are the same. In other embodiments, the method can include receiving a second message to stop mitigating the first quantity of reactive power.

Abstract: A power control system includes an event data bus configured to carry event information. Several power supply managers are coupled to the same event bus. Each power supply manager has one or more point of load (POL) regulators assigned to it. Each power supply manager communicates event information with other POL power supply managers over the event data bus.

Abstract: A method of managing electrical power storage can include remotely controlling operation of one of a plurality of water heating units included in a single water heater, separately from controlling a remainder of the plurality of the water heating units, at a customer location in response to a remotely transmitted indication.

Abstract: A method and a high-voltage DC (HVDC) power system are provided. The system includes a plurality of sending-end (SE) modules coupled in electrical series and divided into at least two groups that each operate independently with respect to an electrical ground and a plurality of receiving-end (RE) power converter modules electrically coupled to the plurality of SE modules, the plurality of RE power converter modules including a fast ground-fault detection and control device, the plurality of RE power converter modules including a receiving-end front-end DC-DC converter controller, and an output current damping control.

Abstract: An electronic device is connected between a power apparatus and an external device for converting a voltage from the power apparatus to charge the external device. The power apparatus is capable of switching between a first state and a second state. The power apparatus generates a working voltage and storing electrical energy in the first state, and stops generating the working voltage in the second state. The electronic device comprises a control circuit and an indication module for indicating the receiving of the working voltage from the power apparatus. The control circuit is connected between the power apparatus and the indication module. When the power apparatus switches from the first state to the second state, the control circuit discharges the stored electrical energy of the power apparatus in the predetermined time and controls the indication module to stop indicating.

Abstract: A PoE powered device and method of operation are provided. The device includes a first port unit configured to negotiate receipt of a level of PoE power from a power sourcing equipment. The power is received on a first pair of taps on a first communication port. A detection unit is configured to detect a presence of a first optional circuit load and to detect a presence of a second optional power load. A control circuit is configured to establish connectivity between a second pair of taps on the first communication port and a second powered device port unit in response to the detection unit detecting the first optional load, and further configured to establish connectivity between the second pair of taps and a third pair of taps on a pass-through communication port in response to the detection unit failing to detect the first load and detecting the second load.

Abstract: A wireless power transfer system includes a plurality of power sources and at least one power receiver, in which power transfer from the power sources to the power receiver is performed in wireless by using magnetic field resonance or electric field resonance. In the system, one of the plurality of power sources is designated as a master power source and the other one or more power sources are designated as slave power sources. In addition, the master power source controls the plurality of power sources and the at least one power receiver to perform the power transfer. This allows the system to perform the power transfer in an optimum state.

Abstract: A semiconductor chip includes: a data output buffer that outputs a data signal; a first power-supply pad that supplies a first power-supply potential to the data output buffer; a power-supply wiring that is connected to the first power-supply pad; a strobe output buffer that outputs a strobe signal; and a second power-supply pad that supplies a second power-supply potential to the strobe output buffer. The power-supply wiring and the second power-supply pad are electrically independent of each other. Therefore, the power-supply noise associated with the switching of the data output buffer does not spread to the strobe output buffer. Thus, it is possible to improve the quality of the strobe signal.

Abstract: Provided is a system and method for detecting and correcting a suboptimal operation of one or more maximum power point tracking (MPPT) devices in a solar photovoltaic power generation (SPVPG) system. MPPT devices may become stuck in a local maximum in a power curve and fail to reach an optimal maximum power point. Described herein are methods and systems for detecting sub-optimal performance of an MPPT device and managing components within the SPVPG system to cause the MPPT device to track a different maximum power point.

Abstract: A power interchange system for interchanging electric energy between a battery and an electric grid is provided The power interchange system includes a rectifier unit for converting alternating current of the electric grid into direct current for charging the battery; a grid measurement device for measuring an electric parameter of the electric grid, and a controller unit for adjusting the direct current for the charging the battery as a function of the electric parameter of the electric grid. Moreover a method for interchanging electric energy between a battery and an electric grid is provided.

Abstract: It is presented a power converter for converting power between a first high voltage direct current, DC, connection, a second high voltage DC connection and a high voltage alternating current, AC, connection. The power converter comprises: a first phase arrangement comprising a first converter arm, a second converter arm, a third converter arm, a fourth converter arm, a fifth converter arm and a sixth converter arm. The first, second third and fourth converter arms are serially connected in the mentioned order between two terminals of the first high voltage DC connection. The high voltage AC connection is connected between the second converter arm and the third converter arm.

Abstract: An electronic switch control system, including an alternating voltage source, an electronic switch, a load, a control circuit, an alternating voltage source being electrically associated to a first conduction terminal of the electronic switch, a second conduction terminal of the electronic switch being associable to a load, the load being associated to a second power terminal. The control circuit includes first, second and third electric potential terminals, and is arranged to command the electronic switch by way of a trigger terminal. The control circuit is electrically associated to a voltage regulator block that is electrically associable to the electronic switch by way of first and third electric contact terminals and first and second conduction terminals respectively, the voltage regulator block being arranged to provide a minimum electrical voltage (Vmin) to run the control circuit in at least a conduction instant of the electronic switch.

Abstract: A mobile power bank assembly device includes a first unit and a second unit. The first unit includes a first casing, a first battery, a first functional circuit, and a first connector. The first battery is connected to the first functional circuit. The first battery and the first functional circuit are disposed inside the first casing. The first connector is exposed from the first casing and connected to the first functional circuit. The second unit includes a second casing, a second functional circuit and a second connector. The second connector is exposed from the second casing and connected to the second functional circuit. The first and second units can be plugged and connected with each other through a connection of the first and second connectors, thereby configuring the second functional circuit to receive electric power from the first battery and have a signal connection with the first functional circuit.

Abstract: A control, protection and power management system for an energy storage system, comprises an interface configured to communicate and provide energy exchange with a host power system, a local load, and the energy storage system, and processing structure configured to receive signals from the host power system and the energy storage system, to determine a mode of operation of the energy storage system and to provide control, protection and power management to the energy storage system.

Abstract: A method and system supply pulsed power. The system includes an inertial energy storage device configured to store inertial energy and an electrochemical energy storage system configured to store electrochemical energy. The system includes a bidirectional energy transfer system. The energy transfer system is configured to receive energy from an energy source. The energy transfer system is configured to transfer at least a portion of the received source energy to the inertial energy storage device. The energy transfer system is configured to transfer at least a portion of the received energy in the inertial energy storage device to the electrochemical energy storage system while controlling a rate at which energy is transferred to the electrochemical energy storage system based on a prescribed charging rate associated with the electrochemical energy storage system. Additionally, the energy transfer system is configured to supply power to one or more loads using the stored energy.

Abstract: A low power biasing circuit for powering up split-rail electronic circuits includes an intermediate voltage generator at each pad which is supplied by a temporary supply voltage to generate a temporary intermediate voltage only when a power signal indicates that all external voltage rails are not safe, thereby reducing power consumption.

Abstract: A battery system (201) includes a battery module (314) in which plural battery cells (310) are connected in series, a battery pack (203) in which the battery modules (314) are connected in series, parallel or series-parallel, and a battery block (212) in which the battery packs (203) are connected in series, parallel or series-parallel, which are mutually layered. In the battery system (201), a structure is adopted in which the battery module (314), the battery pack (203) and the battery block (212) are previously prepared as hierarchical variations of basic units, and these basic units are appropriately combined according to a required scale. According to the battery system of the invention, even when a system construction request of any scale occurs, the request can be flexibly dealt with.

Abstract: An apparatus comprises: a voltage monitoring unit for monitoring input direct-current voltages of first and second converters whose output ends are connected in parallel to each other; and a judgment control unit for judging that an output diode of the first converter is short-circuited, when an input direct-current voltage monitored by the voltage monitoring unit with respect to the first converter rises up to a post-step-up voltage stepped up by the second converter during a step-up operation of the second converter.

Abstract: An integrated circuit supplied by a rail-to-rail power supply voltage includes a multi-level stack voltage generator configured to partition the rail-to-rail power supply voltage into one or more reduced supply voltages each having a voltage value between positive and negative power supply voltages of the rail-to-rail power supply. The reduced supply voltages and the positive and negative power supply voltages being configured in series to form a stack of circuit layers. The integrated circuit further includes a core circuit including core circuit units coupled in a circuit layer or coupled between two or more circuit layers. Each core circuit unit is coupled to at least one of the reduced supply voltages. The core circuit units are coupled in the stack of circuit layers to form a serial connection of core circuit units between the positive power supply voltage and the negative power supply voltage.

Abstract: A method and system for starting and operating an electrically driven load, e.g. a compressor or pump, by power supply from a mechanical driver, e.g. a turbine or combustion engine, whereby the load is mechanically connected to a first electrical machine, and the mechanical driver is mechanically connected to a second electrical machine. The first electrical machine is electrically interconnected to the second electrical machine at a standstill or when the first and or second machine have low speed. In an acceleration phase, the first electrical machine is accelerated by accelerating the second electrical machine with the mechanical driver. When the first electrical machine has reached a predefined rotational speed, the first machine is synchronized with a local electrical power network and connected it to that network.

Abstract: A router module is arranged in a housing of a smart television. The router module is externally connected to a modem for surfing the Internet. The router module is electrically connected to a micro processing unit of the smart television. Therefore, the smart television is connected to the Internet through the router module. A wireless transmission chip of the router module is configured to process Internet signals. An antenna module is configured to wirelessly transmit the Internet signals, so that wireless network is shared to outside.

Abstract: A circuit arrangement has a bidirectional AC/DC converter connected to a first side of a DC/DC converter at a DC side of the AC/DC converter via first electric switch. The AC/DC converter is connected to a second side of the DC/DC converter at the DC side of the AC/DC converter via a second electric switch. The first side of the DC/DC converter is connected to a third electric switch and can be connected to an energy storing device via said switch. The second side of the DC/DC converter is connected to a fourth electric switch and can be connected to an energy generating device via said switch. The AC/DC converter can be connected to the electric supply grid at the AC side of the AC/DC converter. A control device controls the switches and the converters.

Abstract: The power supply system includes: movable power-receiving units, each power-receiving unit including at least one power-receiving device used to receive electric power from outside of the power-receiving unit and at least one power-supplying device used to supply, to the outside of the power-receiving unit, at least part of electric power received by the power-receiving device; and a power-supplying unit used to supply electric power to the power-receiving device of one power-receiving unit of the power-receiving units.

Abstract: A method providing control power for an electricity network in which at least one energy store supplies energy to the electricity network and/or takes up energy from the electricity network dependent on a frequency deviation from a desired frequency of the electricity network, a deadband being prescribed around the desired frequency. The frequency deviation from the network frequency is measured with greater accuracy than a width of the deadband and a bandwidth within the deadband is chosen dependent on a charging state of the energy store, with control power being provided outside the bandwidth. A device carrying out the method includes at least one energy store and a control system controlling control power of the energy store in an open-loop or closed-loop manner, the energy store being connected to an electricity network such that energy can be fed into the electricity network and can be removed from the electricity network.

Abstract: A system, method, and apparatus for local demand response between alternative-energy power-generators, traditional controlled-energy power-generators, and power-consuming loads coupled to a DC bus are disclosed. As a DC bus operating voltage fluctuates between a minimum bus operating voltage to a maximum bus operating voltage, it triggers different power-generators and different power-consumers each having staggered control voltage ranges that enable them to come on-line or go off-line, depending on the bus operating voltage, thereby providing distributed, autonomous and self-regulating demand response performance. Loads vary from opportunistic loads at high alternative-energy generation scenarios, to necessary loads powered by backup or traditional power-generators for low alternative-energy generation scenarios. Safety limits are provided with voltage limits and foldback limits.

Abstract: A turbine farm comprises a plurality of individual turbines each having an auxiliary component circuit. The farm further comprises; a master transformer arranged to be coupled between each of the plurality of individual turbines and an electrical grid and an auxiliary transformer coupled between the sub-station transformer and the auxiliary component circuit in each of the individual turbines. When in use power is transmitted from the sub-station transformer back to each auxiliary component circuit.

Abstract: A downhole power system is provided that includes an energy storage adapted to operate at high temperatures, and a modular signal interface device that serves to control the energy storage component as well as offer a means of data logging at high temperatures. The controller is fabricated from pre-assembled components that may be selected for various combinations to provide desired functionality. The energy storage may include at least one ultracapacitor.

Abstract: Some embodiments described herein generally relate to a solar device with a removable cassette. The removable cassette is configured to dock with the solar device such that, in an engaged position, it may receive electrical energy generated from solar energy by a solar panel of the device, from internal batteries charged by the solar panel or an external power source. The cassette may include at least one of a battery and a power-consuming accessory, such as a wireless router, data storage, an output adapter, or the like. The internal batteries are configured to charge the cassette in cases where the solar panel is not generating electrical energy because of dim lighting or lack of lighting.