Abstract: A system for controlling a plurality of LED lighting fixtures includes a Power over Ethernet (PoE) LED driver coupleable to a PoE switch via a first power and communication link. The PoE LED driver includes a microcontroller for receiving first power and control signals from the PoE switch and for controlling a first LED driver chip to operate an LED lighting fixture in response thereto. An LED slave controller is connected to the PoE LED driver via a second power and communication link. The LED slave controller includes a second LED driver chip for receiving second power and control signals from the microcontroller to operate an LED lighting fixture in response. The first power and control signals are different from the second power and control signals. The first power and communication link is a CAT5/CAT6 cable. The second power and communication link is a CAT5/CAT6 or other cable type.

Abstract: A generator protection unit is provided including a central processing unit including at least one programmable device configured to utilize an Ethernet communication protocol. The central processing unit may be configured to synchronize a first signal generated by a generator electrically coupled to the generator protection unit to a second signal including an electrical power grid parameter of an electrical power grid, the first signal and the second signal having a phase offset. The generator protection unit may also include a plurality of multimeters, each electrically coupled to the electrical power grid and the central processing unit, and at least one display filter electrically coupled to the central processing unit and configured to separate a defined portion of a protection parameter signal, such that a remaining portion of the protection parameter signal is transmitted to the central processing unit.

Abstract: Some embodiments provide a portable consumer electronic device comprising: a battery; a user interface configured to provide a user with information and receive inputs from a user; and a wireless power distribution circuitry coupled with the battery, wherein the wireless power distribution circuitry comprises: a power transfer antenna electrically coupled with the battery and configured to wirelessly and inductively couple with a separate second portable consumer electronic device that is configured to wirelessly and inductively couple with the portable consumer electronic device, and the wireless power distribution circuitry is configured to wirelessly transfer power from the battery through the power transfer antenna to the second portable consumer electronic device; and a power supply controller configured to control the wireless transfer of power through the power transfer antenna.

Abstract: For maximum power point tracking, a method filters a power monitoring signal with a tracking fractional order filter to generate a filtered power monitoring signal. The method further generates a tracking signal tracking the power point from the filtered power monitoring signal.

Abstract: A low standby consumption power supply system having multi-channels for power supply is used to power first and second circuit blocks. The main supply module provides power to the first circuit-block, while the second supply module provides power to the second circuit-block. The enabling line is used to transmit an enabling signal to the main supply module to switch the main supply module from a power-off status to a power-on status. The enabling line operates under enabling mode and power-off mode. Under enabling mode, the enabling line transmit the enabling signal to the main supply module, such that the main supply module and the low-current supply module respectively provide power to the first circuit-block and the second circuit-block simultaneously. Under the power-off mode, the enabling signal is cut off and the main supply module stop providing power, so as to cut off standby current of the main supply module.

Abstract: Embodiments disclose using a pairing or pairings of terminals in a DC power system including a plurality of terminals to implement power oscillation damping (POD), where the DC power system is connectable to at least one AC power system. The active and/or reactive power of the terminals in the pairing may be controlled or modulated in a similar manner such that no power imbalance in the DC power system is created. For example, POD may be implemented by means of active and/or reactive power modulation by pairing two terminals in the DC power system) such that their active and/or reactive powers are controlled or modulated in the same or substantially the same manner or identically but with the opposite sign.

Abstract: A vehicle power source device reliably turns on a high voltage battery even if the output voltage of a low-voltage ancillary battery drops at the start of driving the vehicle. A request to run on a high-voltage battery (to turn on a relay contact point) is made by means of the operation to start driving a vehicle. A low-voltage ancillary battery and an auxiliary battery supply power to a power source circuit. A relay control unit supplied with power from the power source circuit turns on the relay contact point and turns on the high-voltage battery. When the high-voltage battery is on, the auxiliary battery is charged by means of a step-down circuit. The auxiliary battery holds the charged power by means of a diode without the power being consumed by a group of low-voltage loads.

Abstract: There is provided an apparatus, method, computer program product, and a kit and method for upgrading, an apparatus for moving cargo. A bus for transmission of electrical energy, at least one load connected to the bus, said at least one load configured to transform electrical energy from the bus into movement of a cargo with respect to the apparatus energy transforming means configured to transform energy between electrical energy of the bus and potential energy of a hydraulic accumulator, wherein the apparatus is configured to store electrical energy from the bus as potential energy to the hydraulic accumulator and to supply the potential energy stored in the hydraulic accumulator as electrical energy to the at least one load.

Abstract: A reservoir capacitor includes a first capacitor group having two or more capacitors, which are serially coupled to each other between a first power voltage supply terminal and a second power voltage supply terminal, a second capacitor group having two or more capacitors, which are serially coupled to each other between a third power voltage supply terminal and a fourth power voltage supply terminal and a connection line suitable for electrically coupling a first coupling node between the capacitors of the first capacitor group to a second coupling node between the capacitors of the second capacitor group.

Abstract: Systems and methods of semi-centralized energy storage and mobile power outflow for vehicle propulsion comprise at least one energy storage facility receiving energy via an electric grid and at least one mobile vehicle. The energy is generated at a first location, and the energy storage facility is at a second location different from the first location. The second location is closer to end users of the energy than the first location. The energy storage facility produces an energy storage medium at the second location and stores the energy from the first location at the second location in the energy storage medium. The energy storage medium comprises liquid air, liquid oxygen, liquid nitrogen, or a combination thereof. The mobile vehicle includes a prime mover and a cryogenic storage vessel and is configured to carry at least a portion of the energy storage medium in the cryogenic storage vessel and use power from the energy storage medium for mobile vehicle propulsion.

Abstract: Described herein are embodiments of microgrid systems which may be used as stand-alone systems or may be connected to a larger, integrated power supply system. In some embodiments, a system comprises a smart microgrid system comprising at least one electrical power bus connectable to at least one input power source by one or more switchable connections, a communication network coupled to the smart microgrid system, and a controller coupled to the communication network. In some embodiments the controller comprises logic to monitor power outputs from the at least one input power source, to monitor one or more power loads coupled to the at least one electrical power bus, and to selectively connect one or more of the input power sources to the at least one electrical power bus.

Abstract: An aircraft including an electric starter-generator for each of turbojets, and an undercarriage including an electric motor for taxiing the aircraft, which mutualizes an electricity converter for starting and for taxiing the aircraft. A single electricity converter is configured to be coupled to the electric starter-generator associated with a turbojet or to the electric motor of the undercarriage for taxiing, the coupling take place via an electricity distribution unit.

Abstract: An occupancy sensor with integral light level sensors is configured to turn off or disable peripheral circuits and go into a periodic deep sleep mode to reduce phantom loading. Peripheral circuits include occupancy sensor circuits and relay drive circuits, but may include other circuits such as communication circuits. The sensor may be configured to periodically wake itself up, check ambient light conditions to see if lighting is below the set threshold. If it is not, the sensor goes back to sleep. If it is, then the sensor can power up the occupancy sensor circuit to see if the space is occupied; if not, it can go back to sleep. If the space is occupied, it can turn on other peripheral circuits necessary to control the load.

Abstract: An energy storage system which balances cell voltages and a method of balancing cell voltages are disclosed. The system and method use a temperature of balancing resistors to determine a time for the balancing resistors to be selectively connected across battery cells so as to balance the battery cells.

Abstract: Electrical power is dynamically managed among one or more power sources and one or more loads. A plurality of monitor nodes is connected to an input terminal connected to each source, and to an output terminal connected to each load. A plurality of electrical power storage cells is connected among the input and output terminals, each cell being capable of storing power from at least one of the sources and being capable of discharging stored power to at least one of the loads. A plurality of controllable switches is connected to the cells. A programmed controller dynamically monitors operating conditions at the monitor nodes during operation of each source and each load, and selectively dynamically controls the switches to interconnect the cells in different circuit topologies in response to the monitored operating conditions.

Abstract: In a power control system including a first controller configured to control supply of power from a photovoltaic module to a plurality of loads and a second controller configured to control charge/discharge of a storage battery, which is one of the plurality of loads, the first controller controls output following power consumption by the plurality of loads, and the second controller increases, during a self-sustaining operation, charging power of the storage battery and detects output fluctuation from the photovoltaic module or from the first controller along with the increase in the charging power, then based on the detected output fluctuation, controls charge of the storage battery, thus, even if connection to the grid is disconnected, supply power may be replenished by the load power used for supply to the predetermined loads, thereby allowing a stable power supply to the other loads.

Abstract: According to one embodiment, a circuit for providing redundant power includes a first channel having a first input, a first electronic circuit breaker, and a first output, a second channel having a second input, a second electronic circuit breaker, and a second output, and a first transistor coupled to the first electronic circuit breaker, the first transistor in series with a second transistor coupled to the second channel. The circuit normally operates by providing power to the first and second outputs from the first and second channels, respectively. However, if the first channel fails, the transistors switch on to allow power from the second channel to feed the first output in the first channel in addition to feeding power to the second output, and vice versa. Other embodiments and methods for providing redundant power are described as well.

Abstract: Systems and methods are provided for regulating the state of charge of a battery. An exemplary electrical system includes a fuel cell coupled to a bus and a battery coupled to the bus via a switching arrangement coupled to a capacitor. An exemplary method for operating the electrical system involves operating the switching arrangement such that a voltage of the battery is substantially equal to a voltage of the fuel cell when a state of charge of the battery is greater than a lower threshold value and less than an upper threshold value, and operating the switching arrangement to couple the capacitor electrically in series between the battery and the bus when the state of charge of the battery is not between the lower threshold value and the upper threshold value.

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 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: Electrical power is dynamically managed among one or more power sources and one or more loads. A plurality of monitor nodes is connected to an input terminal connected to each source, and to an output terminal connected to each load. A plurality of electrical power storage cells is connected among the input and output terminals, each cell being capable of storing power from at least one of the sources and being capable of discharging stored power to at least one of the loads. A plurality of controllable switches is connected to the cells. A programmed controller dynamically monitors operating conditions at the monitor nodes during operation of each source and each load, and selectively dynamically controls the switches to interconnect the cells in different circuit topologies in response to the monitored operating conditions.

Abstract: A power distribution system includes a plurality of load side power converters configured in a modular stacked DC (MSDC) converter architecture. Each load side converter includes a respective energy storage device such that together the plurality of energy storage devices provides a distributed subsea energy storage system configured to maintain a common subsea busbar voltage substantially constant during intermittent load voltage excursions.

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: Provided are an emergency power supply method for a container terminal and a container terminal, which supply emergency electric power by using a cargo handling machine as a power source in an emergency situation due to electric outage of the container terminal, or the like. In an emergency where an incoming panel (2) of the container terminal (1) cannot supply electric power, yard cranes (11a) to (11c) (cargo handling machines) configured to operate in the container terminal (1) are used as power sources, in which one (the yard crane (11a)) of the plurality of yard cranes (11a) to (11c) (cargo handling machines) is used as a reference power source, and power conditioning units are included which configured to match phases of electric powers of the remaining yard cranes (11b) and (11c) to a phase of electric power of the reference power source, such that electric power is supplied from the plurality of yard cranes (11a) to (11c) to the incoming panel (2).

Abstract: Aspects of the innovations presented herein relate to improved systems that in some embodiments perform capillary electrophoresis (CE) and CE in conjunction with electrospray ionization (ESI) as an input to a mass spectrometry system (MS). Some embodiments use a high voltage isolated CE power supply that is configured to float on the high voltage output of an ESI-MS power supply, with a protective resistance in the ESI-MS path, as well as DC/DC converter isolation and communication system isolation for the isolated CE power supply. Some embodiments additionally use a cartridge assembly integrating separation and conductive fluid capillaries with fluid cooling and protective retractable housings for the capillary end portions and for the ESI output. The protective housing may further be used with an adapter for interfacing with different MS systems.

Abstract: Systems and methods to balance currents among a plurality of photovoltaic units connected in series. In aspect, a management unit is coupled between a photovoltaic energy production unit and a string of energy production units. The management unit has an energy storage element (e.g., a capacitor) connected to the photovoltaic energy production unit. The management unit further has a switch to selectively couple to the energy storage element and the photovoltaic energy production unit to the string. The management unit allows the current in the string to be larger than the current in the photovoltaic energy production unit.

Abstract: Power supply device for a moulding machine with an intermediate circuit, which can be connected with at least one drive of the moulding machine and is suitable for supplying the at least one drive with electrical energy; a supply module connected to the intermediate circuit; an energy storage device connected to the intermediate circuit, and a closed loop control device for closed loop controlling an energy content of the energy storage device, wherein the energy storage device can be closed loop controlled by means of the closed loop control device so that the energy content of the energy storage device does not go outside a range, in which a power input and/or a power output of the energy storage device is essentially constant.

Abstract: A power storage system includes a power control unit including an inverter, and a battery for storing electrical energy supplied with commercial AC power by way of the inverter to supply the electrical energy to an electrical load. An apparatus for selecting specifications of a power storage system includes a data input interface unit for input of data obtained by measuring power usage during prescribed hours at a location of power consumption where the power storage system is to be installed, and an operation processing unit for finding annual average power usage during prescribed hours based on the measured data, and determining an output of the inverter based on the average power usage.

Abstract: The invention relates to an insulation monitoring device (IMD) in a non-grounded electrical DC grid (DC-IT System), particularly an electrical photovoltaic system (PV). Said device has a power supply unit (B), which is supplied with electrical energy from the electrical DC grid (DC-IT System). According to the invention a rechargeable energy store (CIMD) is present, in particular a capacitor with a charging diode (D) connected upstream. This is supplied with electrical energy (UIMD) via the electrical DC grid and supplies the power supply unit (B) in the event of a temporary failure of the electrical DC grid, so that continued operation of the insulation monitoring device (IMD) is possible until the non-grounded electrical DC grid is re-established.

Abstract: A power conversion system is disclosed. The system comprises a plurality of power conversion modules and a controller that turns on/off each power conversion module separately based on changing load conditions, and manages to keep each power conversion module running at its peak efficient state.

Abstract: The present invention relates to an HVDC switchyard arranged to interconnect a first part of a DC grid with a second part of the DC grid. By means of the invention, a first part of the DC grid is connected to the busbars of the HVDC switchyard via a fast DC breaker, while further part(s) of the DC grid are connected to the busbars of the HVDC switchyard by means of switchyard DC breakers of lower breaking speed. By use of the inventive HVDC switchyard arrangement, the cost for the HVDC switchyard can be considerably reduced, while adequate protection can be provided. In one embodiment, the fast DC breaker is an HVDC station DC breaker forming part of an HVDC station. In another embodiment, the fast DC breaker is a switchyard DC breaker.

Abstract: Methods and systems for branch encoding an electric network to identify a direction of power flow in the electric network are provided. Sequential numbers are assigned to a first power source, each one of a plurality of power branches, and each one of a plurality of nodes. A rationalized value indicative of a direction of current flow through a branch is assigned to each branch of the plurality of branches. The rationalized value of each branch is determined as the difference between the numbers assigned to that branch's first connecting node and its second connecting node.

Abstract: The present invention relates generally to electrical power distribution, for example, in aircraft. More particularly, according to a first aspect, the present invention relates to a power supply system for power distribution to one or more loads in a safety-critical power supply network. The power supply system comprises at least one power source, a power bus and a distributed control system. The distributed control system comprises a central controller operably coupled to at least one bus module through a data bus. Bus modules include bus controllers that are operable to connect respective power sources to the power bus.

Abstract: A photovoltaic system includes a first and a second photovoltaic generator (9, 11) which delivers electric energy, an inverter (4) which can be coupled to the PV-generators (9, 11) for converting electric energy of the PV generators (9, 11) to output AC energy, and a switchable coupling arrangement (3) for coupling the PV generators (9, 11) to each other and to the inverter (4). The coupling arrangement (3) is arranged functionally between the PV generators (9, 11) and the inverter (4) and designed to connect the PV generators selectively either in a series circuit arrangement or a parallel circuit arrangement to the inverter (4). The PV system (1) can therefore expediently be operated with an intermediate circuit voltage which is higher than the maximum voltage of one PV generator for achieving improved efficiency whereas it can be switched to a lower intermediate circuit voltage when necessary, for example, in case of a ground connection fault, to maintain predetermined voltage limits.

Abstract: A power supply system comprises a path switching means that switches a power supply path between power generation equipment and a load so that at least a part of output power of each power generation equipment is supplied to another power generation equipment during a power failure or power instability in the grid.

Abstract: A wireless power transmission unit includes oscillators that convert DC energy into RF energy with a frequency f0, power transmitting antennas, and power receiving antennas. Each power transmitting antenna is a series resonant circuit in which a power transmitting inductor and a first capacitor are connected in series. Each power receiving antenna is a parallel resonant circuit in which a power receiving inductor and a second capacitor are connected in parallel. If the oscillator has a voltage step-up ratio Voc, the power transmitting inductor has an inductance L1, the power receiving inductor has an inductance L2, and the power transmitting and power receiving antennas and have a coupling coefficient k, (L2/L1)?4(k/Voc)2 is satisfied. The absolute value of the phase difference ?res between the respective resonant magnetic fields of first and second pairs of resonant antennas is set to fall within the range of 90 to 180 degrees.

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: The present invention provides a power supply circuit, which includes a plurality of switchable bidirectional regulators, respectively coupled between a first common node and a plurality of external terminals, and each external terminal has a switchable connection selectively electrically connectable to a external power source for receiving power supply from the external power source or to an external device for charging the external device. Each switchable bidirectional regulator includes: an upper power transistor switch, a lower power transistor switch, an inductor, and a buck-boost controller for controlling operations of the upper power transistor switch and the lower power transistor switch to perform either buck or boost voltage conversion according to a mode control signal.

Abstract: A remote transmitter wirelessly transmits energy to an article of furniture adapted to receive and store the wireless energy. The article of furniture is further adapted distribute the stored energy to electrical loads such as peripheral electronic devices, portable electronic devices and other articles of furniture. The remote transmitter may wirelessly transfer energy during inactive periods. The stored energy may be distributed to an electrical loads during an active period.

Abstract: Various aspects of invention provide portable power manager operating methods. One aspect of the invention provides a method for operating a power manager having a plurality of device ports for connecting with external power devices and a power bus for connecting with each device port. The method includes: disconnecting each device port from the power bus when no external power device is connected to the device port; accessing information from newly connected external power devices; determining if the newly connected external power devices can be connected to the power bus without power conversion; if not, determining if the newly connected external power devices can be connected to the power bus over an available power converter; and if so, configuring the available power converter for suitable power conversion.

Abstract: Various aspects of invention provide portable power manager operating methods. One aspect of the invention provides a method for operating a power manager having a plurality of device ports for connecting with external power devices and a power bus for connecting with each device port. The method includes: disconnecting each device port from the power bus when no external power device is connected to the device port; accessing information from newly connected external power devices; determining if the newly connected external power devices can be connected to the power bus without power conversion; if not, determining if the newly connected external power devices can be connected to the power bus over an available power converter; and if so, configuring the available power converter for suitable power conversion.

Abstract: A method is provided for managing the level of charge of at least two batteries respectively powering a first and a second device. The devices are able to cooperate physically with one another via a modular interface, and the method includes a step of transferring energy from one of the batteries to the other of the batteries, the transferring step being implemented as a function of a level of charge of at least one of the batteries.

Abstract: The present disclosure provides an electric power supplying apparatus including: an electric storage device; and a control portion configured to control processing for mixing an output from the electric storage device, and an electric power of an external electric power system with each other in accordance with at least one of a peak shift command, a load electric power, and a remaining capacity of the electric storage device, wherein an alternating current electric power is formed in the mixing processing. When the electric power supplying apparatus further includes an electric power generating apparatus, processing for mixing an output from the electric power generating apparatus, an output from the electric storage device, and an electric power of the external electric power system with one another, is controlled.

Abstract: A PLC cable modem is provided which includes an analog electromagnetic field transducer for generating an electromagnetic field based on an analog electrical signal and also for generating an analog electrical signal based on an electromagnetic field. The PLC cable modem also includes an analog signal processing unit operatively coupled to the analog electromagnetic field transducer and a digital signal processing unit for processing signals received from (or to be sent to) the analog signal processing unit. An interface port is provided for communicating digital signals to and from a data transmission or receiving device.

Abstract: An energy supply network has an n-phase electrical machine where n?1 and a controllable first energy reservoir which serves to control and supply electrical energy to the electrical machine. The first energy reservoir has n parallel energy supply branches that each have at least two energy reservoir modules, connected in series, that each encompass at least one electrical energy reservoir cell having an associated controllable coupling unit and are connected on the one hand to a reference bus, and on the other hand to a respective phase of the electrical machine. As a function of control signals, the coupling units either bypass the respectively associated energy reservoir cells or switch the respectively associated energy reservoir cells into the energy supply branch.

Abstract: Provided is a control apparatus for an ancillary service that utilizes storage batteries. The control apparatus, which is for controlling charging/discharging between a power storage unit and a power grid, and of discharging from the power storage unit to a load, allots the rechargeable batteries to a power-grid power-storage section that is for controlling discharging to the power grid on the basis of the amount of economical profit to be raised by this control and/or the state of rechargeable batteries contained in the power storage unit, and to a load power-storage section that is for controlling discharging to the load, to control discharging from the power-grid power-storage section to the power grid, and discharging from the load power-storage section to the load.

Abstract: An energy storage system which balances cell voltages and a method of balancing cell voltages are disclosed. The system and method use a temperature of balancing resistors to determine a time for the balancing resistors to be selectively connected across battery cells so as to balance the battery cells.

Abstract: Aspects of the invention are directed to a power distribution unit including a removable management module and methods for providing power using the power distribution units.

Abstract: Methods and systems for branch encoding an electric network to identify a direction of power flow in the electric network are provided. Sequential numbers are assigned to a first power source, each one of a plurality of power branches, and each one of a plurality of nodes. A rationalized value indicative of a direction of current flow through a branch is assigned to each branch of the plurality of branches. The rationalized value of each branch is determined as the difference between the numbers assigned to that branch's first connecting node and its second connecting node.

Abstract: A distributed power generation system (100) comprises a power generation unit (104) for generating DC power; a power converter (106) which converts the DC power from the power generation unit into AC power (first power) and outputs the first power to a power load; a power measuring device (108, 109) for measuring electric power (second power) supplied from the power supply utility to the power load; and a controller (107) for detecting an abnormality of the power measuring device; wherein the controller detects the abnormality of the power measuring device based on a change in reactive power of the first power and a change in the second power measured by the power measuring device, when the reactive power of the first power is changed.